Hypogastrura tatrica ( STACH, 1949 )

Skarżyński, D., 2010, Hypogastrura Pomorskii Sp. N. From Kyrgyzstan And Notes On The Related Species H. Tatrica (Stach, 1949) (Collembola: Hypogastruridae), Acta Zoologica Academiae Scientiarum Hungaricae 56 (3), pp. 257-263 : 261-262

Hypogastrura tatrica ( STACH, 1949)

( Fig. 11 )

Material examined: 73 syntypes on slides (formerly in alcohol), Tatra Mountains , “Za Mnichem” valley, near the summit of “Mnich II ”, about 2,050m a.s.l., in great numbers under stones on the border of a snow field, 14. VII. 1925, leg. W. ROSZKOWSKI, deposited in the collection of the Institute of Systematics and Evolution of Animals , Polish Academy of Sciences, Kraków, Poland .

H. tatrica is a nivicolous and oreophilous species known so far from the highest ranges of the Northern Carpathians ( STACH 1949, NOSEK 1967). The redescription by BABENKO et al. (1994) was based on only a few syntypes from STACH’s collection. The investigation of numerous specimens yielded new morphological data. H. tatrica has – unique among Hypogastrura – a complete chaetotaxy of the thoracic terga II–III: setae m 1–5 and both m 6’ and m 6 setae are frequently present ( Fig. 11 ). Plurichaetosis is striking: the abdominal terga, but also ventro-lateral anal flaps and thoracic terga II–III bear additional setae. The number of ventral tube setae is 7–9 (usually 7–8), and the number of cylindrical sensilla on antennal segment IV likewise 7–9 (usually 7–8). Morphological characters of H. tatrica and other members of the sahlbergi group are presented in Table 1.

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Acknowledgements – I wish to express my sincere thanks to WANDA M. WEINER (Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Kraków) for supplying the H. tatrica material. I also thank to Dr. GYÖRGY TRASER and Dr. ERHARD CHRISTIAN for insightful comments on the manuscript.

Figures

Figs 1–11. 1–10 = Hypogastrura pomorskii sp. n. 1 = chaetotaxy of thoracic terga II–III; 2 = chaetotaxy of abdominal terga III–VI; 3 = postantennal organ, accessory boss and neighbour ocelli; 4 = apical vesicle on antennal segment IV; 5 = chaetotaxy of antennal segments III–IV; 6 = tibiotarsus I, claws and empodial appendage; 7 = dens and mucro; 8 = mucro, lateral view; 9 = chaetotaxy of ventral tubus; 10 = strongly plurichaetotic chaetotaxy of abdominal tergum V; 11 = Hypogastrura tatrica