. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Peter Zwick & Tatyana Arefina: Blephariceridae of the Russian Far East 355 Base of each pseudopod with group of three spine-like cuticular outgrowths and a large seta (tergopleural and/or pre-dorsopseudopodal sensilla, HOGUE 1978), geminate setae (dorsopseudopodal setae of HOGUE 1978) typical of first instar pseudopods close to apex. Colourless delicate cuticular tube everted from tip of pseudopod with about 10 tiny sharp hooks at end. An- tenna 1-segmented. No
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Peter Zwick & Tatyana Arefina: Blephariceridae of the Russian Far East 355 Base of each pseudopod with group of three spine-like cuticular outgrowths and a large seta (tergopleural and/or pre-dorsopseudopodal sensilla, HOGUE 1978), geminate setae (dorsopseudopodal setae of HOGUE 1978) typical of first instar pseudopods close to apex. Colourless delicate cuticular tube everted from tip of pseudopod with about 10 tiny sharp hooks at end. An- tenna 1-segmented. No gills. Lateral rectal tubules very long, median ones minute. Second instar larva with hard central cone on each ab- dominal segment. Integument with long curved hairs, some blunt, others apically thinned and finely pointed. On sides of body also short transparent spatulate and curved setae. Pseudopods forked (Fig. 19d), long poste- rior branch with rough ventral sole and three long dorsal setae. Short anterior branch with two or three long hairs in addition to geminate setae; ventrally smooth. Antenna 2-segmented. Single gill filaments, rectal tubules un- Fig. 19: Neohapalothrix manschukiiensis. a, first instar larva (cephalic division plus abdominal segment 3; abdominal seg- ments 5 and following); b, detail of dorsal armature, not to scale. Left side of abdominal segment three and pseudopod: c, first instar, posterior view (from a slide mount); d, e, 3r and 4th instar, respectively, dorsal views. Same scale for c and d. Branches of pseudopod deeply separate in 3rd (Fig. 19e) instar larva, completely divided in 4n instar. Hair cover denser, four and seven gill filaments, respectively. Ab- dominal segments 1-6 with strong dark dorsal spine on raised middle portion; body cross-section resembles equilateral triangle (lateral view in Brodsky 1954 is far too flat!). Dorsal side sometimes (3,d instar) or normally (4th instar) patterned in dark brown and yellowish. Ex- ten
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