Tinodes dactringa, 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 : 9-12

Tinodes dactringa , new species

Fig. 18–20

This species is distinguished by the strongly posterad prolonged tergite IX armed with long apical megasetae; the long, gently ventrally curved dorsal branch of the paraproctal process and the shorter ventral branch of paraproctal process with thin apical megasetae; the very broad posterior part of the inferior appendage with 1 pair of dorsal arms and a ventral plate. It resembles Tinodes jicha Malicky & Chantaramongkol 1989 and Tinodes wodgabay Malicky & Chantaramongkol 1989 in the genital shape, especially the shape of the gonocoxites in lateral view, and the presence of a well developed posteroventral branch of the inferior appendage resembling that of T. dactringa , new species.

Male genitalia ( Fig. 18–20 ). In lateral view, sternite IX with 1 pair sharply triangular, anterad oriented processes at anteroventral corner ( Fig. 18 ); posteroventrally produced into broad rectangular lobes. Tergite IX originating from dorsal basis of superior appendages well above mid-height of sternite IX; ventral margin concave along its length ( Fig. 18 ); dorsal and ventral margins nearly parallel along its length in lateral view ( Fig. 18 ); in dorsal view vase-shaped with deeply cleft apex ( Fig. 19 ); about 8 pairs long megasetae present on apex ( Fig. 18, 19 ). Superior appendages originating from near dorsal apices of sternite IX ( Fig. 18 ); sigmoid in lateral view and straight in dorsal view ( Fig. 18, 19 ); cylindrical along their lengths; exceeding posterior apex of paraproctal process and gonocoxites ( Fig. 18 ); setae present along their lengths. Inferior appendage as long as superior appendages ( Fig. 18 ); basal plate apodeme slender widening into club-shaped anterior apex in lateral view ( Fig. 18 ); slender and narrowing anterad in dorsal and ventral views ( Fig. 19, 20 ). Inferior appendage widening posterad, with 1 pair long, thick posterodorsal branches distally curving posterad ( Fig. 18 ) and converging mesad in ventral view ( Fig. 20 ); posteroventral branch of inferior appendage about as long as thickness of tergite IX in lateral view ( Fig. 18 ), apically pointed; in ventral view ( Fig. 20 ) forming plate with slightly producing posterolateral corners; surface of inferior appendage, between posterodorsal and posteroventral branches with 3 pairs long megasetae orienting dorsolaterad ( Fig. 18, 20 ). Paraproctal process forming slightly ventrad curving dorsal branch, about as long as superior appendages ( Fig. 18 ), and pair of ventral branches about one-third as long as dorsal branch, running parallel with dorsal branch; dorsal branch without setae; ventral branches with pair of ventrolateral megaseta at bases behind basis of superior appendages, and thick setae at lateral part of apices ( Fig. 18, 19 ). Coxopodites nearly triangular in lateral view ( Fig. 18 ); ventrally fused mesally before half-length ( Fig. 20 ); apices triangular in lateral view ( Fig. 18 ); in ventral view ( Fig. 20 ) generally broad before knob-shaped, posteromesad oriented apices. Harpagones not seen in lateral view; setose; oriented mesad with tangent apices ( Fig. 20 ).

Holotype male: VIETNAM: Moc Chau, 26.x.1986 [J. Oláh] (OPC, in alcohol).

Paratypes: same data as holotype — 4 males and 3 females (OPC, in alcohol); same, except in NRM.

Etymology. dactringa , from dactring, meaning typical in Vietnamese, referring to this species as the first Tinodes species observed by one of us (János Oláh) from outside the West Palaearctic Region, and being unique from the species in that region.

Figures

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.