taxonID	type	description	language	source
102AA927FFEEFF8CFDA8FD53BBBFFB0C.taxon	description	(Figs 1 – 13) Type material. Holotype: female on slide, Martian Cape near the town of Yalta (Crimean Peninsula, Ukraine), pine forest, litter and soil, 28. VII. 1996, leg. MOSALOV (SMNHL). Paratypes (all on slides): 15 males (including 8 reproductive and 1 ecomorphic), 10 females (including 3 reproductive and 2 ecomorphic), 27 juv. (including 16 ecomorphic, 2 in ecdysis from non-ecomorphic to ecomorphic form), same data as above (48 paratypes SMNHL, 4 paratypes DBET). Other material examined. 1 male on slide, near the town of Yalta (Crimean Peninsula, Ukraine), pine forest, litter and moss, 14. II. 2007, leg. O. HAUSTOV; 3 males, 1 female, 3 juv., Hrestova Mountain near Livadia village (Crimean Peninsula, Ukraine), litter and moss, 10. XII. 2006, leg. O. HAUSTOV (SMNHL). Description. Body length 0.9 – 1.5 mm. Body colour bluish grey. Granulation fine and uniform, 8 – 16 granules between setae p 1 on abdominal tergum V (Fig. 2). Dorsal chaetotaxy of thorax and abdomen as in Figs 1 – 2. Dorsal chaetotaxy of head typical of the genus. Dorsal setae short, thin, tapered, and smooth (Fig. 5). Body sensilla (s) two to three times longer than surrounding setae, smooth. Thoracic tergum I with 3 + 3 setae. Thoracic tergum II with setae m 2 – 4 present and setae m 6 absent. Thoracic tergum III with setae m 3 present and setae m 2, m 4, and m 6 absent. Setae p 3 on abdominal tergum IV usually present; setae m 2 always absent. 6 – 8 setae between sensilla p 3 on abdominal tergum V. Macrochaetae near anal spines tapered. Subcoxa I – III with 1, 2, 3 setae respectively. Polychaetosis absent. Antennal segment IV with simple apical vesicle, subapical organite (or), microsensillum (ms), 4 (3 lateral, 1 dorsal) thin, cylindrical, curved sensilla (Fig. 3) and up to 10 short erect sensilla in the ventral file. Antennal III-organ with two long (lateral) and two short (internal) curved sensilla (Fig. 3). Microsensillum on antennal segment III present. Antennal segment I with 7 setae. Ocelli 8 + 8. Post antennal organ slightly smaller than neighbour ocelli, with 4 subequal lobes (Fig. 4). Accessory boss invisible. Labrum with 5, 5, 4 setae, 4 prelabrals, and 4 – 6 distal papillae. Head of maxilla of the tullbergi type, outer lobe with 2 sublobal hairs. Labium of the tullbergi type. Tibiotarsi I – III with 19, 19, 18 setae, clavate tenent hairs 2 (A 1, A 7), 3 (A 1, A 2, A 7), 3 – 4 (A 1, A 2, A 7, B 2) respectively. Tenent hairs slightly longer than claws. Setae A 1 thicker and longer than others; setae B 2 on tibitarsi III more or less clavate, rarely pointed. Claws with small inner tooth above middle of inner edge; lateral teeth weakly visible. Empodial appendage with broad basal lamella and apical filament reaching 1 / 2 of claw inner edge (Fig. 7). Ventral tube with 4 + 4 setae. Retinaculum with 3 + 3 teeth. Furca well developed (Fig. 6). Dens with fine and uniform granulation and 6 setae. Mucro narrow with low outer lamella and about 1 / 3 – 1 / 4 as long as dens. Anal spines short, set on small basal papillae (Figs 2, 5). tibiotarsus III, claws and empodial appendage mucro of form B. Description of ecomorphic specimens. Numerous specimens collected in July exhibit features typical of ecomorphic forms of Hypogastrura boldorii DENIS, 1931 (CASSAGNAU 1956) and Hypogastrura conflictiva JORDANA et ARBEA, 1992 (ARBEA 2007). 1 male, 1 female, and 18 juveniles comparable with form B of H. boldorii (CASSAGNAU 1956) have reduced mouthparts (head of maxillae small with indistinct lamellae; mandibles small with some indistinct apical teeth and without molar plates), small ocelli, claws (without inner tooth), empodial appendages (Fig. 10), mucro (Fig. 13), anal spines and short body setae (Fig. 8). Of the tibiotarsal tenent hairs, only A 1 are clavate, while the remaining ones are shortened and pointed (Fig. 10). Tegumentary granulation is coarse and irregular, especially on the last abdominal terga. On abdominal tergum IV and V, smooth plates made of joined granules are visible (Fig. 8). 1 female of H. martiani sp. n. refers to the ecomorphic form C of H. boldorii (CASSAGNAU 1956). This specimen differs from form B in having more shortened and thickened claws, smaller empodial appendages with indistinct basal lamellae, all tibiotarsal tenent hairs pointed (Fig. 11), mucrodens (Fig. 12), and a coarse and regular tegumentary granulation (Fig. 9). Moreover, mandibles are invisible in form C. Although morphological signs of ecomorphosis in H. martiani sp. n. and H. boldorii sensu CASSAGNAU (1956) are similar, their life cycles are different. This former species reproduces in the summer (July), whereas the latter in the autumn (October). The occurrence of the reproductive form and the ecomorphic forms of H. boldorii sensu CASSAGNAU (1956) in the field is separated temporally due to ecoclimatic conditions. The coexistence of all forms of H. martiani sp. n. (non-reproductive / non-ecomorphic, ecomorphic B, ecomorphic C, and reproductive) at the same time and place is an interesting phenomenon in this context. Further studies are needed to explain the peculiar characteristics of this life cycle. Etymology. Named after its terra typica, Cape Martian near the town of Yalta (Crimea, Ukraine). Discussion. The Hypogastrura viatica group is one of the largest within the genus and comprises about 30 species and forms characterized by weakly differentiated sensilla on antennal segment IV, the retinaculum with 3 + 3 teeth, the ventral tubus with 4 + 4 setae, broad basal empodial lamella, and tibiotarsi with more than one clavate setae (NAJT et al. 1984, FJELLBERG 1985, BABENKO et al. 1994, CHRISTIANSEN & BELLINGER 1998, THIBAUD et al. 2004). Some of them, e. g. H. viatica (TULLBERG, 1872), H. distincta (AXELSON, 1902), and H. purpurescens (LUBBOCK, 1867), are morphologically well defined and widely distributed; others are distinguished based on subtle morphological features, distributional patterns, and habitat preferences.	en	Skarżyński, D. (2009): A New Species And A New Interesting Record Of The Genus Hypogastrura Bourlet, 1839 (Collembola, Hypogastruridae) From Ukraine. Acta Zoologica Academiae Scientiarum Hungaricae 55 (1): 23-30, DOI: 10.5281/zenodo.12584895
102AA927FFEAFF8FFE1CFB38BA3EFA53.taxon	materials_examined	Material examined. 21 specimens on slides, soil and litter in birch forest, Solenozerna locality, Chornomors’ky Biosphere Reserve, Kherson district, Ukraine, 30. IV. 2006, leg. I. KAPRUS’; 1 specimen, soil and turf, steppe, Jagorlyts’ky Kut locality, Chornomors’ky Biosphere Reserve, Kherson district, Ukraine, 2. V. 2006, leg. I. KAPRUS’; 1 specimen, soil and turf, steppe, Kamiani Mohyly Reserve, Donets’k district, Ukraine, 23. X. 1996, leg. O. STAROSTENKO (18 specimens SMNHL, 5 specimens DBET). Note. H. janetscheki has been recorded from Ukraine for the first time. This species described from Sierra Nevada (S Spain) (STEINER 1959) was recognized as summer form of H. socialis and synonymized by JORDANA et al. (1997). However, judging from the description and figures, H. socialis sensu JORDANA et al. (1997) in fact represents two distinct species different from H. socialis sensu STACH (1949), BABENKO et al. (1994), and FJELLBERG (1998). The summer form of H. socialis sensu JORDANA et al. (1997), characterized by 8 cylindrical sensilla on antennal segment IV, m 2 setae on thoracic tergum II absent, setae m 1 on abdominal tergum IV present, mucro with subapical tooth, and dens with fine tegumentary granulation (JORDANA et al. 1997: fig. 38), is H. janetscheki, and the winter form from Quinto Real (West Pyrenees), with 8 cylindrical sensilla on antennal segment IV, m 2 setae on thoracic tergum II and setae m 1 on abdominal tergum IV absent, mucro with subapical tooth, and dens with some spine-like granules (JORDANA et al. 1997: fig. 39), is H. kelmendica PEJA, 1985 or a related species (see SKARŻYŃSKI & SMOLIS 2003). True H. socialis can be easily distinguished from them by the larger number (10 – 12) of sensilla on antennal segment IV and the presence of setae m 2 on thoracic tergum II. In the light of these facts H. janetscheki should be considered a valid species. Unfortunately our knowledge of the morphology of H. janetscheki is incomplete. All specimens mentioned by STEINER (1959) were collected in July; therefore, the morphology of winter (cyclomorphic) specimens remains unknown. The Ukrainian material is also imperfect in this respect, as there is only one specimen collected in the autumn. It has fine granules at the basal part of the dens and some larger (but not spine-like) ones near its distal end. Further studies are needed to establish weather H. janetscheki is a cyclomorphic species. Although the Ukrainian population fits the description of H. janetscheki (STEINER 1959, JORDANA et al. 1997), it can also be related to Hypogastrura spei BABENKO, 1994 from Taymir, the Urals, Chukotka, and Armenia, which is a possible synonym of the former species. They differ in the character of dens granulation only. H. spei is a cyclomorphic species with the summer and the winter forms typical of the H. socialis group (BABENKO et al. 1994). Until the morphology of winter specimens of H. janetscheki becomes known, H. spei should be considered as a valid species.	en	Skarżyński, D. (2009): A New Species And A New Interesting Record Of The Genus Hypogastrura Bourlet, 1839 (Collembola, Hypogastruridae) From Ukraine. Acta Zoologica Academiae Scientiarum Hungaricae 55 (1): 23-30, DOI: 10.5281/zenodo.12584895
