биота российских вод японского моря - Materials of Alexey Shipunov

5(6). Female marsupium consists of 3 pairs of well-developed oostegites. Exopod offourth pleopod of male 4–5-segmented (pl. VII, fig. 5). (Male pleopod 3 biramous;exopod 4-segmented; endopod unsegmented, but relatively long: it comprises1/2–2/3 of exopod length (pl. VII, fig. 4). Telson elongate, linguiform, withbroadly rounded apex, bearing 2 pairs of spines; outer pair much longer than innerone [pl. VII, fig. 7]) .......................................................... 3. Stilomysis (p. 52)6(5). Female marsupium consists of 2 pairs of well-developed oostegites. Exopod offourth pleopod of male 2- to 3-segmented, or unsegmented (pl. VIII, fig. 2; IX,fig. 5; XVI, fig. 5).7(8). Exopod of fourth pleopod of male 3-segmented: third distal segment very small,ratio of length of first (basal) segment of exopod to lengths of second and third(distal) segments is 23:5:1 (pl. VIII, fig. 2). (Antennal scale elongate, withrounded apex, 5.4–10 times as long as broad (pl. VIII, fig. 1). Tergites of distalthoracic segment and all abdominal segments smooth, without transverse furrows.Telson elongate, longuiform, with rounded apex, bearing 2 pairs of spines;outer pair twice as long as inner one; spines on distal third of telson gathered in5–10 groups [pl. VIII, fig. 4]) ..................................... 4. Disacanthomysis (p. 53)8(7). Exopod of fourth pleopod of male 2-segmented or unsegmented (pl. IX, fig. 5;XVI, fig. 5).9(10). Antennal scale with pointed apex (pl. IX, fig. 1). (Exopod of fourth pleopod ofmale 2-segmented [pl. IX, fig. 5]) ........................................ 5. Neomysis (p. 54)10(9). Antennal scale with rounded apex (pl. XIII, figs. 1, 5; XVI, fig. 3).11(16). Exopod of fourth pleopod of male 2-segmented (pl. XIII, figs. 2–6; XIV, fig. 3).12(15). Tergites of distal thoracic segment and all abdominal segments smooth, withouttransverse furrows (pl. IX, fig. 4).13(14). Telson elongate, triangular, with truncated apex (pl. XIII, fig. 4). (Antennalscale 3.4–5.8 times as long as broad (pl. XIII, fig. 1); 6–38 spines situated onventral side of endopod of uropods, near statocyst (pl. XIII, fig. 3); spinesgrouped on distal 2/3 of lateral margin of telson) ......................................................................................................................... 6. Boreoacanthomysis (p. 58)14(13). Telson elongate, linguiform, with rounded apex (pl. XIII, figs. 8–9). (Antennalscale 3.4–5.4 times as long as broad (pl. XIII, fig. 5); ventral side of endopodof uropods armed with 14–31 spines situated along major part of inner marginfrom statocyst to apex; spines on lateral margin of telson gradually increase inlength towards apex, not grouped) ..................... 7. Hemiacanthomysis (p. 59)15(12). Tergites of distal thoracic segment and of all abdominal segments with transversefurrows (pl. XIV, fig. 2; XV, fig. 2) ............... 8. Exacanthomysis (p. 60)16(11). Exopod of fourth pleopods of male unsegmented (pl. XVI, fig. 5) ................................................................................................... 9. Paracanthomysis (p. 61)1. Genus Inusitatomysis Ii, 1940Type species: Inusitatomysis insolita Ii, 1940.Eye flattened; cornea bud-shaped, situated along outer margin (Pl. V, fig. 1). Labrumwithout anterior process (Pl. V, fig. 4). Antennal scale lanceolate; outer marginsaw-toothed, without setae. Carpus and propodus of thoracopods 3–8 joined obliquely.Female marsupium consists of 3 pairs of oostegites. Male pleopods 1–3 and 5, as well50