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Fig. 3 A-E. Streptocephalus similis Baird (I d' sl = 15.1 mm, DB 965). A. Head and right antenna in lateral view, B. left antenna in inner
view, C. detail from B, D. genitalia in ventral view, E. cercopods in ventral view. bj. basal joint, bp. non-retractile part of right penis, fa . frontal
appendage, Ii. linger, pd. peduncle, 51. abdominal segment I. teo telson & tho thumb. Scale bars: A, B & E. 1.0 mm, C & D. 0.2 mm.
VII/a-2772 3 IS. I (lIS .3) mm, 2 Q Q 14.6, IS .0
mm; USNM 1011S4 N Valles, TamauJipas, Mexico
Sd' d' 10.9 (10.7-11.6) mm, S Q Q 14.0 (9.6-1S.3)
mm.
Diagnosis. Male. Peduncle of distal outgrowth of intermediate type; rotation of hand not more than 40°; inner
side of proximal part of peduncle without protuberances; peduncle with pulvinus; spur acuminate; inner
lamella medioventrally produced forming a cavity; distal part of thumb inerm, geniculate, apex acuminate;