Limnonectes fastigatus Stuart, Schoen, Nelson, Maher, Neang, Rowley & McLeod, 2020

Limnonectes fastigatus Stuart, Schoen, Nelson, Maher, Neang, Rowley & McLeod, 2020

Materials

Type status: Other material. Occurrence: catalogNumber: IEBR A. 6341 (field No. KCR 2024.28); individualCount: 1; sex: male; lifeStage: adult; occurrenceID: 9ED2E779-A2ED-5DAF-87B6-CA1514E9868E; Taxon: scientificNameID: Limnonectes fastigatus ; scientificName: Limnonectes fastigatus ; class: Amphibia; order: Anura ; family: Dicroglossidae ; genus: Limnonectes ; specificEpithet: fastigatus ; scientificNameAuthorship: Stuart, Schoen, Nelson, Maher, Neang, Rowley, and McLeod, 2020; Location: country: Vietnam; countryCode: VN; stateProvince: Gia Lai; county: Gia Lai; locality: Kon Cha Rang Nature Reserve ; verbatimElevation: 937 m; verbatimLatitude: 14°54.042'N; verbatimLongitude: 108°55.376'E; Event: eventDate: April 25, 2024; eventRemarks: collected by TQ Phan and HTL Le; Record Level: language: en; collectionCode: Amphibians; basisOfRecord: PreservedSpecimen GoogleMaps

Type status: Other material. Occurrence: catalogNumber: IEBR A. 6342 (field No. KCR 2024.53); individualCount: 1; sex: male; lifeStage: adult; occurrenceID: 694FD8A2-EECD-5164-A083-9F03C8F31082; Taxon: scientificNameID: Limnonectes fastigatus ; scientificName: Limnonectes fastigatus ; class: Amphibia; order: Anura ; family: Dicroglossidae ; genus: Limnonectes ; specificEpithet: fastigatus ; scientificNameAuthorship: Stuart, Schoen, Nelson, Maher, Neang, Rowley, and McLeod, 2020; Location: country: Vietnam; countryCode: VN; stateProvince: Gia Lai; county: Gia Lai; locality: Kon Cha Rang Nature Reserve ; verbatimElevation: 937 m; verbatimLatitude: 14°54.042'N; verbatimLongitude: 108°55.376'E; Event: eventDate: April 25, 2024; eventRemarks: collected by TQ Phan and HTL Le; Record Level: language: en; collectionCode: Amphibians; basisOfRecord: PreservedSpecimen GoogleMaps

Description

One sequence of 560 bps (16 S gene) from specimen IEBR A. 6341 (GenBank accession number PV 444293) of Limnonectes specimen from Kon Cha Rang Nature Reserve, Gia Lai Province was similar (98.2 %) to the available sequence of L. fastigatus (accession number MT 459155 View Materials ) on GenBank.

Morphological characters of specimens from Gia Lai Province agreed with the descriptions of Stuart et al. (2020) and Pham et al. (2022). Size large (SVL 58.9-68.6 mm in males, n = 2), habitus robust with moderately enlarged head (HL / SVL 0.43-0.45, HW / SVL 0.46-0.48 in males); head width broader than long (HL 26.3-29.8 mm, HW 27.1-32.6 mm, n = 2); snout round anteriorly in dorsal view, projecting beyond lower jaw; nostril lateral, about mid-way between snout tip and eye (NS 4.1-4.8 mm, EN 4.4-5.4 mm in males); canthus rostralis indistinct; loreal region oblique and slightly concave; rostral length greater than eye diameter (RL 8.5-10.2 mm, ED 7.1-8.0 mm in males); tympanum invisible; vomerine teeth in two oblique ridges; tongue cordiform, notched posteriorly; lower jaw with two tooth-like, odontoid processes robust thin and elongate with rounded tips; lacking vocal sacs in males (Table 1 View Table 1 and Fig. 3 View Figure 3 ).

Arms short; upper arm length (UAL 11.8-14.3 mm in males), forearm length (FAL 23.1-29.1 mm in males); fingers free of webbing; dermal ridge on sides of fingers II and III; tips of fingers blunt, not expanded; inner metatarsal tubercle large, oval; outer metatarsal tubercle small, elongate; finger I of males with nuptial pad, composed of minute spines on the dorsal surface and medial edge (Fig. 4 View Figure 4 ).

Tibia length shorter than thigh length (FeL 27.2-31.1 mm, TbL 26.1-29.8 mm in males), longer than wide (TbL / TbW 2.33-2.42 in males); tips of toes blunt, slightly round; toes webbed to the middle of terminal phalanx at base of toe pad; webbing well developed; dermal ridge on outer sides of toes I and V; inner metatarsal tubercle elongate; outer metatarsal tubercle absent; tibio-tarsal articulation reaching behind the eye (Fig. 4 View Figure 4 ).

Skin texture in life. Dorsal surface of head and body crenulate; small tubercles on the upper eyelid; flanks, around cloaca and dorsal surface of limbs and thighs with small tubercles; supratympanic fold distinct, extending from eye to angle of the jaw; dorsolateral fold absent; dorsal surface of tibia and foot distinctly tuberculate, covered with moderately dense, small, tubercles; throat, chest, belly and ventral surface of thighs smooth.

Colouration in life. Iris light brass with dark grey-brown lines bisecting eye vertically and horizontally through pupil; head with a pale yellow bar in the anterior interorbital region and a narrow dark brown bar in the posterior interorbital region; dorsum and flanks with dark grey-brown marking; lips with dark bars; supratympanic fold black; dorsal surface of limbs irregular, yellowish-brown with dark crossbars; ventral surface of limbs, throat and chest white with brown markings; belly immaculate white; toe webbing brown; the tip of fingers and toes white (Fig. 3 View Figure 3 ).

Distribution

In Vietnam, this species was recorded in Kon Tum Province ( Pham et al. 2022). Elsewhere, the species is known from Cambodia ( Stuart et al. 2020). This is the first record of L. fastigatus from Gia Lai Province.

Ecology

The frogs were found between 19: 00 and 23: 00 h in the water of rocky streams or on the ground. The surrounding habitat was a mixed secondary evergreen forest of the large, medium and small hardwoods and shrubs. Air temperature was 18–28 ° C and relative humidity was 76–86 %.