taxonID	type	description	language	source
03859B60CA79CD659BF4FB923731F9EC.taxon	discussion	Remarks: On 28 March 2017, tens to hundreds of individuals were calling in the late morning (0900 – 1100 h) together with Tomopterna wambensis in a temporary water body created by recent rainfalls in the usually dry bushland in front of the TBI near Illeret. Several pairs of Poyntonophrynus lughensis were found in amplexus. One female was collected and accessioned in the NMK collection (Fig. 3 A). Similar to other members of the African pygmy toads of this genus, the natural history of P. lughensis is almost completely unknown (Ceríaco et al. 2018). Interestingly, in a recent large-scale molecular phylogeny of African toads, P. lughensis actually clustered with the species of the genus Mertensophryne Tihen, 1960 (Liedtke et al. 2017).	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA79CD65986EFC37366AFA75.taxon	discussion	Remarks: This species (Fig. 3 D) was found in high numbers. Individuals were found at night together with Sclerophrys turkanae in flooded grassy plains along the shore of Lake Turkana, but also on the edge of temporarily flooded waterbodies and in the riverbed transects slightly further away from the actual lake shore where S. turkanae was mostly absent. When disturbed at the water edge on land, individuals of P. nilotica escaped by jumping into the lake, but instead of diving into the water, they rather jumped across the water surface for several meters without sinking before jumping back on land.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA79CD65986EFF38310AFCEF.taxon	description	Localities: AB (R), KF (G) Remarks: Endemic to Kenya. This toad (Fig. 3 C) was very abundant in the grassland transects along the shores of Lake Turkana, and found in high numbers and different sizes at Alia Bay and Koobi Fora. During the day they were hiding in moist mud cracks, and at night they were on land in slightly flooded grassy plains right at the lake edge. Males were calling in November, and the calls affirmed their identification as S. turkanae. According to the latest published amphibian guide (Spawls et al. 2019), this species is only known from Lake Turkana. The IUCN assessment mentions records from two localities in north-central Kenya: Loyangalani [Loiengalani] (south-eastern shores of Lake Turkana), and Uaso Nyiro River in the Samburu Game Reserve (IUCN SSC Amphibian Specialist Group 2016).	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA79CD659BF4F9F137E0F864.taxon	discussion	Remarks: One male was calling on 13 April 2017 in an artificial water reservoir at TBI. This was the only individual we recorded of this widespread species from dry savanna and semi-desert. The specimen (Fig. 3 B) showed the bright scarlet vermiculation on the posterior femoral integument typical for S. xeros. In addition, the call resembled typical S. xeros calls.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA79CD62986EFA7D378EFE2C.taxon	discussion	Remarks: Ptychadena schillukorum currently has a large distribution range across sub-Saharan Africa, from Mauritania to Somalia and south to Angola and Mozambique. The taxonomy of frogs referred to as P. schillukorum is unresolved, and this taxon may actually represent a species complex (e. g., Nago et al. 2006). We assigned individual SK 16 1105 (Fig. 3 E) to P. cf. schillukorum based on the following features: skin of the flank granular or warty, tympanum-eye diameter ratio about 0.70, both internarial distance and nostril-tip of snout distance less than nostril-eye distance. A previous record from the Omo River delta in Ethiopia already exists. On the night of 9 December 2016, the sole individual SK 16 1105 was found sitting on soft sand in the dry riverbed of an ephemeral river (known as “ lagga ” or “ lagha ”), about 1.6 km from the lake shore. In arid lands, this species usually inhabits permanent water bodies such as swamps and springs where they can occur in sympatry with P. nilotica (e. g., in Shompole swamp, Magadi, southwestern Kenya) (PK Malonza, pers. obs.). Molecular analyses will help to resolve the taxonomic status of the P. schillukorum group.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7ECD62986EFCF8369EFAC5.taxon	description	Vouchers: None Localities: AB (L), IL (L, B), KF (L, G) Remarks: The Lake Turkana population of Nile Crocodiles used to be the largest in the world (IUCN World Heritage Outlook 2020). Recent data suggests that the crocodiles are heavily impacted by local fishermen who destroy nesting sites, and the remaining population is only a fraction of what it used to be (IUCN World Heritage Outlook 2020). We found Crocodylus niloticus in Lake Turkana and adjacent water bodies along the shoreline. Very young juveniles (Fig. 4 A) were found in March / April.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7ECD629BF4FDF1377BFAC5.taxon	description	Localities: IL (G, R), KA (R), KF (R), LO (R), TBI Remarks: This medium-sized, stout, semi-fossorial frog was quite common in the study area. Its inner metatarsal tubercle is used for digging into the soil of dry riverbeds in order to reach moister areas and survive droughts, and the outer metatarsal tubercle is absent. It can be further identified by its interrupted glandular ridges below the tympanum. As soon as a few drops of rain fell – often during the night – the buried individuals of T. wambensis (Fig. 3 F) appeared on the surface. On 28 March 2017, tens to hundreds of individuals were calling in the late morning (0900 – 1100 h) together with Poyntonophrynus lughensis in a temporary water body created by recent rainfalls in the usually dry bushland in front of the TBI. For one individual, an internal field body temperature (T b) of 29.4 ° C was recorded at an air temperature (T a) of 30 ° C and substrate temperature (T sub) of 21 ° C.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7ECD62986EFEB23059FD16.taxon	description	Vouchers: None Localities: KF (B) Remarks: The carapace of one dead individual of this soft-shell turtle was found about 900 m from the shore of Lake Turkana at Koobi Fora. These turtles are still eaten by the local people around Lake Turkana (V. Wasonga, pers. obs.; Spawls et al. 2018), so we suspect the locality does not reflect the individual’s actual habitat. The Nile Soft-shelled Turtle inhabits permanent lakes, dams, and rivers, and is known to enter the sea, but it does not live in any other Kenyan lake in the Great Rift Valley other than Lake Turkana, because none of the other rivers were ever connected to the Nile system (Spawls et al. 2018).	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7FCD639BF4FE9134C1FC8D.taxon	distribution	Distribution: AB (R), petrified forest Remarks: The distribution of this taxon is still uncertain in many parts of its range because of possible confusion with Agama agama (but not in Kenya), A. finchi, and A. dodomae (Spawls et al. 2018). This agama was only found in Alia Bay (three individuals including one juvenile NMK- 398 L / 1 (SK 16 1038 b )) and in the petrified forest (NMK SK 1115). In the absence of rocks, this species was entirely arboreal, living on Vachellia sp. trees in the riparian woodlands along the dry riverbeds. Only in the rock-dominated petrified forest site (about 5 km from Karsa Gate, the southern entry point of SNP) was this species rupicolous. We found Agama lionotus individuals (Fig. 4 B) only between 1800 h and 2100 h. The average T b was 33.8 ± 1.7 ° C (32.6 – 35 ° C; N = 2) with T sub ranging from 30 – 34 ° C and T a ranging from 32 – 35 ° C.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7FCD639BF4FC1A37E2FB26.taxon	distribution	Distribution: AB (B), KA (B, R), KF (R), LO (B) Remarks: This species occurs in dry savannas and semi-deserts in lower elevations (Spawls et al. 2018). We recorded 25 individuals of this strictly terrestrial agama (Fig. 4 C) in bushland at all sites except IL. Activity was high during all four study months, and individuals were observed to be active from 0900 h to 2200 h. The average T b was 31.9 ± 3.0 ° C (28.4 – 36.5 ° C; N = 5) with T sub ranging from 24 – 39 ° C and T a ranging from 27 – 36 ° C.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7FCD63986EFF773669FCA0.taxon	description	Localities: KF (B), TBI, petrified forest Remarks: This is a fairly large gecko that is widespread in Kenya, occurring south to Tanzania, north to Sudan and west to Senegal, and occupying a variety of dry and mesic habitats (Spawls et al. 2018). It can be distinguished from H. ruspolii and other Hemidactylus by small granules covering the upper surface of the snout rather than large and keeled granules, heterogeneous dorsal scales with small granular scales interspersed with rows of large, keeled, and mainly oval tubercles, and males with a series of 20 – 46 preano-femoral pores interrupted mid-ventrally (Fig. 4 E). Three individuals were found over the course of our study, and all of them were associated with rocks or anthropogenic structures / houses. This taxon might actually represent a species complex (the type locality is in Gabon), and extensive molecular analyses are necessary to resolve its status. One gravid female carrying eggs was collected on 7 April 2017.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7FCD639BF4FACF35D7F866.taxon	distribution	Distribution: KA (R), IL (R), TBI Remarks: Very little is known about this nocturnal terrestrial eyelid gecko and only occasional records exist. It is assumed to occur throughout dry savannas and semi-deserts from southeastern Ethiopia, northern Somalia through Kenya and into northeastern Tanzania at low elevations of 200 – 1,000 m (Spawls et al. 2018). We found seven individuals in November, December, and April in dry sandy river beds at KA and at TBI near the water reservoir. The species’ occurrence seems to be associated with high groundwater and / or dense vegetation as all individuals were found at night in the riverbed at the edge of the vegetated slope. Three different color morphs were found, including yellowish, slightly pink, and darker brown (Fig. 4 D). These are the first Kenyan records from the eastern side of Lake Turkana.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7FCD61986EFC373734FF25.taxon	distribution	Distribution: KA (R) Remarks: Four individuals were found at KA (about 15 km inland of Lake Turkana) at about 514 m elevation. These represent the first records from the eastern side of Lake Turkana (Sindaco et al. 2007). This species can be distinguished from the syntopic Hemidactylus ruspolii Boulenger, 1896 by the presence of precloacal pores in males (instead of femoral pores), and a dorsal pattern consisting of four transverse dark grey (or at least bordered with dark grey margins) bands (one nuchal and three between anterior and posterior limbs), and a dark rather narrow crescent shaped band bordering the posterior skull margins and extending through the eyes to the nostril (more pronounced in the yellow and black juveniles; Fig 4 F). It is different from Hemidactylus bavazzanoi Lanza, 1978 in the mental scale arrangement as well as the dorsal pattern, which in H. bavazzanoi comprises only three dark transverse bands and a broader crescent shaped head band. Little is known about the ecology of H. barbierii. It is usually considered to be terrestrial, hiding under ground coverings or in holes (Sindaco et al. 2007; Spawls et al. 2018). Based on our observations, we consider it to be arboreal rather than terrestrial. This species inhabits the riparian woodlands along dry laggas where individuals were found actively foraging at night on the tree stems and at the bases of trees. All individuals escaped by fleeing up the trees rather than running away on the ground. One recently hatched individual (Fig. 4 F) was found during the day hiding under the bark of a Vachellia sp. tree at about 1.8 m above the ground on 29 November 2019. So far, this species is only known from the Lake Turkana region. The type series was collected south of KF, 10 km inland from AB (Sindaco et al. 2007).	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7DCD61986EFBE5368DF95A.taxon	description	Additional tissue samples: SK 351 2017, SK 468 2017, SK 469 2017, SK 478 2017, SK 479 2017 Localities: KA (B, R), LO (B), TBI Remarks: Heliobolus spekii (Fig. 4 L) is a widespread generalist species inhabiting coastal thicket and woodland, moist and dry savanna, and semi-desert at elevations from sea level to 1,500 m (Spawls et al. 2018). We found 18 individuals throughout the study period. This species was absent from the sites near the lake shore and from sparsely vegetated areas. It was only found further inland at the Karare site, Lomosia, and at TBI in more densely vegetated, grassy bushland and on vegetated riverbanks. One pair was observed mating on 17 April 2017. The average T b was high at 37.5 ± 1.4 ° C (34.5 – 39 ° C; N = 8) at substrate temperatures (T sub) ranging from 28 – 49 ° C and T a ranging from 29 – 34 ° C.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7DCD619BF4FEB23414FC7B.taxon	description	Additional tissue samples: SK 105 2016 Localities: AB (R), IL (R, G, B), KA (R, B), KF (R, G), LO (R) Remarks: Recently elevated to a full species from the synonymy of its sister species Hemidactylus isolepis Boulenger, 1895, this small, terrestrial gecko is a typical inhabitant of the dry, semi-desert areas in northern Kenya (Spawls et al. 2018). This species (Fig. 4 G) was one of the most common reptiles in SNP, with 96 individuals recorded. The highest abundance was along the shores of Lake Turkana, where individuals were hiding in the root system under dried reeds, but it also was found in dry laggas and bushland under dead logs, trees, and rocks. It was exclusively active at night, foraging on sand, gravel, and compact soils. The average T b was 34.0 ± 1.5 ° C (30.5 – 35.8 ° C; N = 10) with T sub ranging from 24 – 47 ° C and T a ranging from 28 – 38 ° C.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7DCD619BF4FC6F34A6FA75.taxon	description	Localities: AB (R), IL (B, R), KA, (B, R), KF (B, R) Remarks: This medium-sized gecko (Fig. 4 H) is less widespread in East Africa and inhabits drier and lower areas in Kenya, Somalia, and Ethiopia compared to its relative H. angulatus. This species was quite abundant in the riverbeds of SNP were we often found it at night under bark, foraging along tree stems, and at the foot of trees. A few individuals were also found in bushland on Salvadora persica (“ toothbrush tree ”). Average T b was 32.3 ± 1.0 ° C (30.5 – 34.1 ° C; N = 12) with T sub ranging from 25 – 33 ° C and T a ranging from 29 – 34 ° C.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7DCD619BF4FA623480F866.taxon	description	Localities: AB (R), IL (R), KA (B), LO (R) Remarks: The strictly arboreal Banded Velvet Gecko (Fig. 4 I) is a savanna species that typically occupies holes and crevices in large trees from sea level to at least 1,300 m (Spawls et al. 2018). In SNP, we found six individuals in December, March, and April. Individuals were found under bark and in holes of Vachellia sp., as well as on the much smaller and bush-like Salvadora persica. A gravid female was collected on 30 March 2017. The average T b was 35 ± 0 ° C (N = 2) with T sub ranging from 33 – 34 ° C and T a ranging from 34 – 35 ° C. These are the first Kenyan records from the eastern side of Lake Turkana.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7DCD61986EFF3D3038FE28.taxon	description	Additional tissue samples: SK 278 2016 Localities: IL (R, B), KF (R) Remarks: This arboreal species is a typical inhabitant of dry savannas and semi-deserts. During our surveys, 39 individuals of this small diurnal gecko (Fig. 4 J) were recorded in IL (N = 35) and KF (N = 4), in both bushland and in dry riverbeds on small trees and shrubs (the majority on Salvadora persica, but also on Vachellia sp.).	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7DCD61986EFDBE314BFC38.taxon	description	Additional tissue samples: SK 084 2016, SK 120 2016, SK 117 2016 Localities: AB (R, B), IL (R, B, G), KA (B), KF (R, B, G), LO (B) Remarks: This widespread nocturnal, terrestrial gecko (Fig. 4 K) is known from semi-deserts and deserts across its range, but in Kenya it has only been recorded in the Lake Turkana vicinity. It was very common in the study area, with 75 individuals recorded. All individuals were found on the ground (sand, gravel, often under shrubs) in the evening and at night (1900 h to 2300 h). The average T b was 32.4 ± 2.2 ° C (25.8 – 35 ° C; N = 20) with T sub ranging from 23 – 33 ° C and T a ranging from 27 – 35 ° C.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA7DCD6E986EF94D34F2FD85.taxon	description	Localities: AB (R, B, G), IL (R, B, G), KA (R, B), KF (R, B), LO (R, B) Remarks: We recorded 33 individuals of this common diurnal lacertid (Fig. 4 M) throughout the study period on all transects between 0800 h and 1930 h. All lizards were darting between bushes in search of prey and places for hiding. Average T b was high at 37.8 ± 1.2 ° C (36.2 – 39.5 ° C; N = 8) at T sub ranging from 31 – 65 ° C and T a ranging from 33 – 39 ° C. The genus Latastia consists of multiple similar-looking species and subspecies, and in some cases, only the suspected distribution range allows for identification. Rigorous genetic analysis is necessary to update the taxonomic status, the distinguishing morphological character traits, and the distribution ranges of existing specimens.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA72CD6E9BF4FB3F347FF986.taxon	description	Localities: KA (B), KF (G) Remarks: This skink (Fig. 4 O) is known from dry savanna and semi-desert in northern Kenya. We found only two individuals of this semi-fossorial skink in KA and KF in grassland and bushland, respectively. Both individuals were active during the day, one was found under dead reeds along the lake shore, and the other was digging into the loose sand under a Commiphora africana shrub. The body temperature of the individual under the reed was 34.9 ° C at a substrate temperature of 34 ° C (T a 37.5 ° C). These are the first Kenyan records from the eastern side of Lake Turkana.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA72CD6E9BF4F9113113FF3B.taxon	description	Additional tissue samples: SK 281 2016 Localities: IL (B, R), KA (R), KF (R, B, G), LO (B) Remarks: A nocturnal, fossorial species that occupies a variety of habitats comprising coastal savanna and woodland, dry and moist savanna, semi-desert, and medium to high-elevation woodland up to 2,000 m (Spawls et al. 2018). Seventeen individuals of Mochlus sundevallii (Fig. 4 P) were found, all after sunset, digging in soft sand under shrubs. Average T b was 33.9 ± 1.0 ° C (32.7 – 34.9 ° C; N = 4) at T sub ranging from 29 – 30 ° C and T a ranged from 32 – 35 ° C.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA72CD6E9BF4FD123761FBF6.taxon	description	Localities: AB (B) Remarks: Only a limited number of records exist for this species, and its exact range is therefore unknown – it is currently known from southern Ethiopia and northern and central Kenya, at elevations below 800 m (Spawls et al. 2018). During our survey, we found two individuals (Fig. 4 N) in a very dry and overgrazed area of the AB bushland on compacted but not rocky substrate in the late mornings of 15 and 16 November 2016. On the same transect, Agama rueppelli, Latastia longicaudata, Rhamphiophis rostrastus, Stenodactylus sthenodactylus, and Trachylepis striata were also recorded.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA72CD6E986EFEAF36BDFC1E.taxon	description	Localities: AB (B, L), IL (B), KA (B), KF (G) Remarks: A recent study found Trachylepis striata (Fig. 4 Q) to be paraphyletic, with Ethiopian individuals being the sister group to Tanzanian individuals and T. mlanjensis (Loveridge, 1953) from Malawi (Weinell et al. 2019). Kenyan specimens were not included in that study. Extensive molecular analyses of individuals covering the distribution ranges of these taxa will be necessary to resolve their respective status. For now, Trachylepis striata is considered a generalist skink, living in forest clearings, coastal thicket, moist and dry savanna, semi-desert, and urban areas (Spawls et al. 2018). The 14 individuals of a diurnal skink found during this study were assigned to T. striata sensu lato. All individuals were discovered on the ground, although this species has been referred to as arboreal (Spawls et al. 2018). The majority of individuals were found under clumps of dead reeds along the lake shore. Average T b was 34.7 ± 0.4 ° C (34.4 – 35 ° C; N = 2) at T sub ranging from 34 – 40 ° C and T a was 34 ° C.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA72CD6E986EFBC431A7F9B8.taxon	description	Vouchers: NMK- 381 L (field no. SK 16 1108) Localities: IL (R), AB (R) Remarks: This monitor lizard is quite widespread across Africa and occupies different habitats from dry and moist savanna, coastal thicket and woodland, and semi-desert, from sea level to 1,500 m elevation (Spawls et al. 2018). It likely occurs across most of Kenya, but museum specimens are scarce. The records of the rock or White-Throated Monitor represent the first records for the eastern shore of Lake Turkana, although there was hardly any doubt the species occurred there. Three individuals were found in December and April, comprising one adult and two juveniles. The two juveniles (Fig. 4 R) were found at night sleeping on tree branches, one was exposed just lying atop the branch at 2 m height, and one was hidden under bark close to the ground. The adult individual was found in the morning under the bark of a tree stem.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA72CD6F986EF92C347BFEFD.taxon	description	Vouchers: None Localities: IL (G) Remarks: The most widespread African lizard usually lives near fresh water sources from sea level to around 1,600 m elevation, and rarely higher. We observed one individual Nile Monitor walking along the shore of Lake Turkana in the early afternoon in December 2016. This species might be under threat in some parts of Africa, as it is exploited for its skin, particularly in West Africa, but the proliferation of dams has provided extra habitat for this species (Spawls et al. 2018). It is probably quite common in SNP.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA73CD6F986EF96A3079F866.taxon	description	Localities: IL (R) Remarks: We recorded one individual (Fig. 4 Y) of this large and widely distributed viper at night in December 2016 among the Vachellia sp. trees in a dry riverbed.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA73CD6F9BF4FE43348DFC1E.taxon	description	Vouchers: NMK- 372 S (field no. SK 16 1023) Additional tissue samples: SK 353 2017 Localities: AB (B), IL (B, R), KF (B), LO (B), TBI Remarks: A typical inhabitant of arid and semi-arid areas in north-eastern Africa (Spawls et al. 2018). The natural history of the Sand Boa (Fig. 4 S) is poorly known due to its secretive fossorial lifestyle. We recorded seven individuals. Six of them were active at night or at least after sunset, and the other one recorded during daytime was found at TBI at noon after rain. It was a large female that was lying under a tree in the moist soil with its head buried underground and its entire body exposed; however, it was largely protected from direct sun by the shadow of the tree. Individuals were recorded in November, March, and April mainly in bushland, and only one individual was found in a dry riverbed.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA73CD6F986EFACC3690F9BB.taxon	description	Localities: KA (R), KF (G, R) Remarks: This spitting cobra is another typical occupant of semi-deserts and dry savannas (Spawls et al. 2018). In November 2016, we found three individuals of the grayphased Naja pallida (Fig. 4 X). All were active after sunset at Koobi Fora and Karare. One was found in grassland near the lake shore, and the other two were foraging in dry riverbeds.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA73CD6F9BF4FBC73436FA75.taxon	description	Localities: AB (house wall) Remarks: This racer occupies dry savanna and semi-desert at elevations spanning 100 – 1,300 m (Spawls et al. 2018). In the early afternoon (1400 h) of 16 November 2016, we collected a specimen of this species (Fig. 4 T) coming out of a crevice in the wall of one of the buildings in the Alia Bay grasslands. Only limited information is known about this species and records are still sparse, leading to a fragmented currently-known distribution range (Spawls et al. 2018).	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA73CD6F986EFDBA31A0FC7B.taxon	description	Records: AB (R), KF (museum headquarters) Remarks: Thiscommondiurnalsnakeiswidelydistributed. We found one adult and one juvenile individual in Koobi Fora and Alia Bay in the vegetation along the riverbed and in the Koobi Fora camp, both in April. The large adult individual (Fig. 4 V) was feeding on a weaver bird when found (Kirchhof et al. 2018). The currently accepted subspecies P. p. punctulatus and P. p. trivirgatus (to which the SNP specimens were assigned) seem to be parapatric and morphologically distinguishable, and they might both prove to be full species in the future.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA73CD6F9BF4F9B93066FE2D.taxon	description	Records: KA (B) Remarks: A slim grey sand snake very similar to Psammophis biseriatus, of which it was originally described as a subspecies. Its taxonomic status will remain unresolved without thorough genetic and morphological analyses covering their entire ranges. According to Loveridge (1940) the only character separating P. biseriatus biseriatus from P. b. tanganicus [sic] is the number of labial scales entering the orbit (two in P. b. biseriatus vs. three in P. b. tanganicus [sic]). Specimen NMK- 370 S has nine labials and the 4 th, 5 th, and 6 th are in contact with the orbit. Labials are not plain white but rather largely blotched in light brown. This poorly known snake occurs from sea level to about 1,300 m in dry savanna and semi-desert, but the known Kenyan records are few and very scattered (Spawls et al. 2018). We found only one individual (Fig. 4 U) in the bushland at Karare in the evening of 2 December 2016 right at sunset. It was actively moving on the ground, but immediately climbed into a shrub when disturbed. If the specimen proves to be P. tanganicus this will be the first record from the Lake Turkana area. Genetic analyses are necessary to resolve the taxonomic status of P. biseriatus and P. tanganicus.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA73CD6F986EFC6F3125FB26.taxon	description	Localities: AB (B) Remarks: This diurnal snake inhabits semi-desert, dry and moist savanna, coastal thicket, and woodland up to 1,500 m (Spawls et al. 2018). We recorded this large terrestrial snake only once (Fig. 4 W) in bushland at Alia Bay in November 2016 at night.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
03859B60CA77CD6B9BE8FBB1376EFA59.taxon	description	Additional tissue samples: SK 051 2016 Localities: AB (B, R), IL (B, R), KA (B), KF (B, G, R), LO (R) Remarks: The most common snake in SNP during our expeditions was Echis pyramidum, with 38 individuals recorded. This species (Fig. 4 Z) occurred at all our study sites and in all transect types, but with a predilection for bushland (26 records). Activity was restricted to the night time, and records during daytime were exclusively of resting individuals dug out under dead logs.	en	Kirchhof, Sebastian, Wasonga, Victor, Mazuch, Tomáš, Spawls, Stephen, Malonza, Patrick Kinyatta (2023): An annotated checklist of the herpetofauna of the Sibiloi National Park in northern Kenya based on field surveys. Amphibian & Reptile Conservation (e 324) 17 (1 / 2): 1-18, DOI: 10.5281/zenodo.12761910
