Tinodes suksa, 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 : 12-14

Tinodes suksa , new species

Fig. 21–23

This species is distinguished by the posteriorly produced sternite IX; the very long and apically dividing paraproctal process originating from sternite IX well below mid-height of genitalia and bearing 1 pair of very large posterolaterad megasetae at mid-length; and the extremely narrow tergite forming a narrow band along the length above the paraproctal process.

Male genitalia ( Fig. 21–23 ). In lateral view, sternite IX ventral parts strongly producing posterad, dorsal parts expanding anterad before ending in paraproctal process below mid-height of genitalia ( Fig. 21 ); in ventral view nearly oval, with slightly incising anterior apex ( Fig. 23 ). Tergite IX long, originating from dorsal basis of superior appendages; sigmoid, narrow tuboid laterally, continuing dorsally above paraproctal process ( Fig. 21, 22 ); in dorsal view slightly diverging before fusing as far out as apices of coxopodites ( Fig. 21, 22 ); without setae or megasetae. Superior appendages originating from dorsal-most part of sternite IX; undulating distad; about 2 times wider than tergite IX along its length in lateral view ( Fig. 21 ); in dorsal view widest at mid-length ( Fig. 22 ); setae restricted to distal two-fifths. Inferior appendage as long as superior appendages ( Fig. 18 ); basal plate apodeme gradually widening anterad into slightly up-curving, club-shaped apex ( Fig. 21 ); in ventral view ( Fig. 23 ) narrow before ending in anterior spine ( Fig. 23 ); posterior part ending in coxopodite basis ( Fig. 21 ). Paraproctal process basally wide in lateral view ( Fig. 21 ); orienting anterodorsad before looping posteroventrad; divided into dorsal and ventral processes around mid-length its length ( Fig. 22 ); dorsal process laterally narrowly bifid from midlength its length; ventral process longer than dorsal process, widely bifid immediately after large lateral megasetae ( Fig. 22 ); dorsal process smooth; ventral process with 1 pair very large, posteroventrad orienting megasetae, followed by lateral pair of rows of 3 short megasetae; branches of dorsal process curving dorsomesad apically; branches of ventral process oriented posteroventrad and crossing apically ( Fig. 22 ). Coxopodites as broad as posterior part of sternite IX in lateral view ( Fig. 21 ), dorsal and ventral margins nearly parallel ( Fig. 21 ); ventrally fused mesally at three-fourths their length ( Fig. 23 ); apically separated by narrow slit; producing laterally into posterolaterad setose lobes; with 1 pair prominent, smooth processes originating from posterior apices, in ventral view directed laterad before mesad curving apices ( Fig. 23 ). Harpagones absent.

Holotype male: MALAYSIA: Perak, Halong str., 29.xi.1993, light [G. S. Robinson] (OPC, in alcohol).

Paratypes: same data as holotype, except 8.xii.1993 — 1 male; same, except in NRM; MALAYSIA: Pahang Genting Tea Estate, 2000 ft., xi.1981, Malaise trap by stream [K. R. Truck] — 5 males; same, except 4 males in NRM.

Etymology. suksa , from suksa , meaning thin in Sanskrit, referring to the slender body and genitalia of this species.

Figures

FIGURES 21 – 23. Tinodes suksa, new species, holotype. 21 — genitalia, lateral; 22 — genitalia, dorsal; 23 — genitalia, ventral. Scale bar = 0.1 mm refers to Fig. 21 – 23.

FIGURES 18 – 20. Tinodes dactringa, new species, holotype. 18 — genitalia, lateral; 19 — genitalia, dorsal; 20 — genitalia, ventral. Scale bar = 0.2 mm refers to Fig. 18 – 20.