장음표시 사용
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l8 Pronotum, meson Otum, scutellum, metan Otum, thorax lateralty and Ven
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Actia Mologica Academiae Scientiarium Hungariciae 42 2); ρρ. Iήβ-JU. I996
REDESCRIPTION OF NITO A DIVARICATA CHAPPUIS. l 923 COPEPODA HA ACTICOIDA) WITH FIRST RECORD SFROM AUSTROPOTAMOBIUS TORRENTIUM SCHRANKDANIELLE DEFAYE
harpactico id froin Caspian Sea. Harpacticoid samples collected Dom gilis of AustropoliamOhiuS torrentium SCHRANK by M. H. NESEMANN hom Austria and Germany proved to he Νito radivaricata. This is the first mention of this species for Austria. This is also the rst time that it is recorded as a commensat of AuStroPotamohiuS torrentium. Aredescription with figures is gi ven to complement the earlier ones, Since those were osten Only partiat, particularly concerning the male.
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Fig. 2 sthe reserences marked with an asterisk are simple citations, not referring to commensati Sinor distribution).
β. Cephaloso me without nuchal Organ, with triangular, prominent rostrum. POSterior fringe of thoracic somites without any ornamentation excepi last One, with
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DESCRIPTION OF THE CRAYFISH COMMENSAL NITORRIA DIVARICATA
Somites posterior to genital somite each with laterat row of long spines, the more posterior somite with additional ventral row of sanae spines. S mali circular integumentat winclows present on each side on uroso mites: doubie genital somite having two patrs of these integumentat winclows indicatea by dotted lines, Fig. l a). Anal somite with so me spines inserted ventralty at mediat bases of furcal rami: dorSally, a pair of long, Strong Spines near mediat insertion os furcat rami sonae laterat spines at hase of furca. Anal operculum flightly convex with gener- atly four denticles so metimes β ot 6). Furcat rami Fig. l a. h. c) about 2 times longer than broad , divergent with convex dorsal basal prominence in laterat view Fig. lc): ending in two long terminal median setae in ner seia 2. J times the Outer and 0. 8 times the total body tengili), shon in ner feta, dorsal Sela, and two laterO- externat fetae with two or three smali spines inserted at base. Antennule Fig. le) shon, of eight segmenis, murth segment with strongaesthetasc, end of aesthetasc passing last Segment of appendage. Antenna Fig. in bi segmented. with exopodite uni segmented, shon and bearing three Setae. Mandi ble Fig. ig) with exopodite bisegmented. second segment with mur terminal setae. Maxillule Fig. th) with arthrite os praecox a bearing five s hori strongterminal claws, hasipodite and coxopodite armed respective ly with four and two setae. Maxilla Fig. li) syncoxa with two endites, distat one bearing two setae proximal endite elongated. without characteri Zed setae: endopodite represented by two setae. Maxilli ped Fig. U) prehensile, with two rows of law spines onc Oxopodite. Pl to P4 Fig. 2ia d) with tri segmented rami. Ait endopodites and exo
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DESCRIPTION OF THE CRAYFISH COMMENSAL NITOKRIA DIVARICATA
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Pβ Fig. Pe) with basoendopodite bearing five setae and spines, the three mediat most spines shori. Exopodite 2.9 times longer than broad, with si x fetae two terminal setae the longest, longest one of them 2.4 times as long as exopodite. Egg-sac single , with abΟUt twel Ve eggS. Setae and spine formula susing LANG's l 948) method)
Pl Fig. 3 e) with strong spine inserted on in ner angle of basi podite modi-fied: en d bulging and curved to forna a s mali strong claw under different viewson Fig. 3e). P3 with endopodite ornamented on in ner margin os Enp2 and 3 witha compaci row of very Smali denticles. Enp3 with two terminal spines, outer spine curved and of the sanae tength as in ner, both together forming pliers. P Fig. 3 D with basoendo podite bearing sive stiori fetae and spines of almost sanae tength. Exopodi te 2. 4 times as long as broad, with si x fetae inserted atlocations different than in se male, o ne inserted on internat margin two inserted distat ly. and three on externat margin Of Segment. P6 Fig. 3g) consisting of three setae, median seta at least twice longer than