Troglomysis Stammer, 1933

Wittmann, Karl J., Ariani, Antonio P. & Daneliya, Mikhail, 2016, The Mysidae (Crustacea: Peracarida: Mysida) in fresh and oligohaline waters of the Mediterranean. Taxonomy, biogeography, and bioinvasion, Zootaxa 4142 (1), pp. 1-70 : 39

Genus Troglomysis Stammer, 1933

Fig. 18

Revised definition. Diamysini with cornea present as small external rudiments distally on the large eyestalks in both sexes ( Fig. 18 B, C). Antennal scale without spines, setose almost all around ( Fig. 18 A, D); scale with short apical segment, terminally rounded in both sexes. Carapace with a pair of post-suborbital spines, and without fringes in both sexes ( Fig. 18 A). Thoracic endopods 3–8 with 3–6-segmented carpopropodus, dactylus small, with distinct, in part seta-like claw ( Fig. 18 E–L); dactylus of endopod 8 flanked by a pair of minute paradactylar lobes ( Fig. 18 K) in both sexes. All female pleopods and male pleopods 1, 2, 5 reduced to setose rods ( Fig. 18 O). Male pleopod 3 reduced to well-developed, two-segmented sympod terminally fused with its small, setose, unsegmented endopod, exopod missing ( Fig. 18 M). Male pleopod 4 ( Fig. 18 N) biramous with 2-segmented sympod, with small, 2-segmented endopod, and with large, 3-segmented exopod bearing a modified seta at tip and a very long smooth seta at penultimate segment; seta from the penultimate segment extends far beyond the seta from the apical segment ( Fig. 18 N). Endopod of uropod setose all around, with only one spine below statocyst. Telson with small apical cleft; with spines on each lateral margin, these margins ending in a pair of large, posteriorly directed apical spines; cleft lined by a number of laminae ( Fig. 18 S, T).

Type species. Troglomysis vjetrenicensis Stammer, 1933 , by monotypy.

Figures

FIGURE 18. Troglomysis vjetrenicensis Stammer, 1933, from the cave Donja Vjetrenica (type locality). A, male with body length 9.9 mm, dorsal view on cephalothorax; B, left eye of male 12.5 mm, dorsal; C, right eye of female 12.0 mm, dorsal; D, antennal scale of male 12.5 mm; E – K, series of tarsi of thoracic endopods 3 – 8 in same male, setae omitted; L, eighth thoracopod with penis of same male; M – O, series of third to fifth pleopods in same male (M, O, views on outer = rostral face; N, inner = caudal face); P – R, posterior margin of sixth pleonite (lateral aspect turned by 90 ° to the left) in female 10.2 mm (P), female 10.4 mm (Q), and male 12.5 mm (R); S, telson of male 12.5 mm; T, distal third of telson in subadult female 12.0 mm.