Tinodes kemnounga, Johanson, Kjell Arne & Oláh, János, 2008

Johanson, Kjell Arne & Oláh, János, 2008, Description of seven new Tinodes species from Asia (Trichoptera: Psychomyiidae), Zootaxa 1854, pp. 1-15 : 2-3

Tinodes kemnounga , new species

Fig. 1–3

This species is distinguished by the tripartite segment IX, the very short paraproctal process, the very long inferior appendages with large, club-shaped dorsal branch, and the coxopodites densely covered by small spines on the ventral surface.

Male genitalia ( Fig. 1–3 ). In lateral view, sternite IX forming 3 pairs prominent plates; ventral plates anteriorly conical; median plates slightly shorter than ventral plates, dorsally pointing anterad; dorsal plates nearly quadrangular with single posterodorsal and posteroventral processes. In dorsal view ( Fig. 2 ) sternite IX producing anterad at center, immediately opposite of paraproctal process ( Fig. 2 ). In ventral view sternite IX with short, central lobe with short marginal megasetae ( Fig. 3 ). Long, slender, tube-shaped process originating immediately below paraproctal process possibly forming phallus ( Fig. 1, 2 ). Pair of flat, lateral processes originate at or immediately below dorsal plates of sternite IX ( Fig. 1, 2 ). In ventral view ( Fig. 3 ) sternite IX narrowing centrally. Tergum IX originating from posterodorsal part of dorsal plates of sternite IX; narrow at basis; directed posterad along its length; tapering apically in lateral view ( Fig. 1 ); wide in dorsal view ( Fig. 2 ), slightly narrowing distally, apex truncate; with 2 pairs of setae immediately before apical margin. Superior appendages tube-shaped; basal one-third oriented posteroventrad before bending posterad; setae present at distal two-thirds. Inferior appendages 2.5 times longer than superior appendages; oriented posterad along their lengths, except slightly bending dorsad at anterior one-fifth; dividing at anterior one-fifth into dorsal branches posteriorly exceeding superior appendages, with wide, club-shaped distal two-fifths; dorsal branches divided by transversal articulation at two-fifths their lengths; sclerous process large, sharply pointing posterad, with dentose dorsal and ventral margins, apices reaching as long as apex of dorsal branch of inferior appendages. Ventral branch of inferior appendages ( Fig. 1 ) curving ventrad before ending in coxopodites. Paraproctal process minute, as long as length of sternite IX in dorsal view ( Fig. 2 ); oriented posterad, with small megasetae along posterior apex ( Fig. 1, 2 ). In ventral view ( Fig. 3 ) coxopodites narrowing posterad in lateral and ventral views ( Fig. 2, 3 ); with short megasetae centrally on ventral surface towards harpago, delimited laterally by short setae ( Fig. 3 ). Harpago slightly bending posteroventrad from ventral margin of coxopodites ( Fig. 1 ); in ventral view ( Fig. 3 ) fusing at basal one-third before dividing into pair of posterad oriented, apically inwardly curving branches.

Holotype male: VIETNAM: Bac Thai Province, Quang Chu, 24–25.v.1987, light [J. Oláh] (OPC, in alcohol).

Etymology. kemnounga , from “khiem nhuong”, meaning modest in Vietnamese, referring to the difficulties in discovering this small animal among the numerous other caddisflies in the sample.

Figures

FIGURES 1 – 3. Tinodes kemnounga, new species, holotype. 1 — genitalia, lateral; 2 — genitalia, dorsal; 3 — genitalia, ventral. Scale bar = 0.2 mm refers to Fig. 1 – 3.