Tinodes gapbona, 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 : 7

Tinodes gapbona , new species

Fig. 10–13

This species is distinguished by the shape of the paraproctal process that is divided into a main central branch that is sub-divided before apex, and a short pair of lateral branches with ventral megasetae in apical group. The shape of the posterior branches of the inferior appendage are divided into short up-curving ventral tooth and long, ventrally looping dorsal branch. Tinodes gapbona , new species is similar to Tinodes achaemenides Malicky & Chantaramongkol 1996 with an asymmetrical paraproctal process forming a sheath around a pair of sclerous processes, similar inferior appendages, and a pair of ventrad curving apical processes on the coxopodite.

Male genitalia ( Fig. 10–13 ). In lateral view, sternite IX with 1 pair of finger-like, anterad oriented processes above the anterad produced anteroventral corner; posteroventrally produced into long, rounded lobes. Tergum IX originating from basis of superior appendages well below mid-height of sternite IX; ventral margins straight along their lengths ( Fig. 10 ); irregularly broadening distally in lateral view ( Fig. 10 ); with central, U-shaped incision at posterior margin in dorsal view ( Fig. 12 ). Superior appendages originating well below mid-height of sternite IX; club-shaped; slightly bent posterad immediately after mid-length ( Fig. 10 ); diverging in dorsal view ( Fig. 12 ). Inferior appendages slightly longer than superior appendages ( Fig. 10 ); inferior appendage basal plate apodeme slender, with club-shaped anterior apex in lateral view ( Fig. 10 ); very slender, needle-shaped in dorsal and ventral views ( Fig. 12, 13 ); posterior part 2-branched, claw-like ( Fig. 10 ); dorsal apex strongly looping ventrad, with 2 pairs setae near margin on lateral surface; ventral apex pointing posterad; in ventral view visible as single, slender process along longitudinal axis of genitalia ( Fig. 13 ). Paraproctal process complicated, originating from dorsal apex of sternite IX; divided into long central branch and pair of shorter lateral branches. Central branch proximally straight and distally curving ventrad in lateral view ( Fig. 10 ); main part forming sheath with central, dorsad curving tube and pair of long, pointed, asymmetrical sclerous processes ( Fig. 10, 11, 12 ). Lateral branches of paraproctal process oriented ventrad before curving posterad at mid-length ( Fig. 10 ); densely covered by stout, ventrad and laterad oriented megasetae at apex ( Fig. 10 ); in dorsal view left and right branches converging towards mid-length before diverging apices ( Fig. 12 ). Coxopodites oval in lateral view ( Fig. 10 ); in ventral view fused mesally at basal three-fourths ( Fig. 13 ); apices with lateral, finger-like process with short setae along mesal margin ( Fig. 13 ); additional slender process originating from basis of harpagones being sigmoid in ventral view ( Fig. 13 ) and strongly looping ventrad in lateral view ( Fig. 10 ). Harpagones setose, originating from apex of coxopodites; slightly club-shaped in lateral view, straight ( Fig. 10 ); in ventral view ( Fig. 13 ) cone-shaped, slightly directed mesad ( Fig. 13 ).

Holotype male: VIETNAM: Hoabinh towards Dabac, 21.x.1986, light [J. Oláh] (OPC, in alcohol).

Etymology. gapbona , from “gap bon”, meaning four fold in Vietnamese, referring to the fourfold appearance of the gonocoxite and paraproctal process.

Figures

FIGURES 10 – 13. Tinodes gapbona, new species, holotype. 10 — genitalia, lateral; 11 — detail of posterior part of paraproctal process, lateral; 12 — genitalia, dorsal; 13 — genitalia, ventral. Scale bar = 0.1 mm refers to Fig. 10 – 13.