Paduniella taya, Johanson, Kjell Arne & Oláh, János, 2010

Johanson, Kjell Arne & Oláh, János, 2010, Description of six new species of Oriental Paduniella (Insecta: Trichoptera: Psychomyiidae), Zootaxa 2548, pp. 43-56 : 54-55

Paduniella taya , new species

Figs 22–24

Paduniella taya , new species is unique among species in the superior appendages exceeding the inferior appendages posteriorly; and the apex of each superior appendage has a large, dorsal, submarginal process not seen in other species. The pattern along the ventral margin apically on the median process of the phallic apparatus is unique for this species.

Male genitalia. Sternite IX narrowly club-shaped in lateral view ( Fig. 22 ); wide ventral part with straight anterior margin and nearly V-shaped posterior margin, without protuberance at corners; dorsal part of sternite IX slightly widening dorsad, about 1.5 times longer than ventral part, straight; joining tergites IX dorsally in genitalia. Narrow dorsal part of sternite IX in right angle with ventral part of sternite IX. Dorsal apex of sternite IX connecting to sternal strip near dorsal apex of strip ( Fig. 24 ). Sclerotized part of tergite IX short, basally wide, bending posteriorly at mid-length into narrow apex ( Fig. 22 ). Superior appendages long, generally slender in lateral view; dorsal and ventral margins nearly parallel; nearly straight; setae present on distal part; apex curving posteroventrad; large, rounded dorsal process present immediately before apex. Median branch of inferior appendages not visible in lateral view ( Fig. 22 ), in ventral view ( Fig. 23 ), median branches forming short posterad orienting processes with irregularly rounded apices; each originating from mid-length of main branch ( Fig. 23 ); mesal margins diverging distally, with marginal row of short setae. Ventral lobe of inferior appendages reduced to longitudinal ventral row of setae as seen in ventral view ( Fig. 23 ). Main branch of inferior appendages sigmoid, orienting posterad ( Fig. 22 ); slender, narrowest from midlength; slightly widening at dorsad-curving apex. Phallic apparatus connecting to sternite IX and tergite IX by long, slender, nearly parallel-sided sternal strip ( Fig. 24 ). Sternal strip curving dorsad from base before bending posterodorsally and dorsally shortly before dorsal apex. Phallobase irregular in lateral view; shorter than sternal strip; ventral margin shallowly concave; orienting anterodorsally. Median process longer than phallicata; originating from anterior end of phallobase; straight along anterior 3/4rs before curving ventrad; equally wide along its length; distal 1/4r with transverse pattern along ventral margin; apex pointed ( Fig. 24 ). Additional process present below median process; wide at base before narrowing; tapering and strongly curving ventrad from basal 1/6th its length. Phallicata tuboid along its length in lateral view; basal half straight; distal half curving ventrad; apex rounded. Paramere originating from basal part of phallicata, slightly diverging and tapering from phallicata towards pointed apex.

Male holotype: VIETNAM, Lamdong, Baoloc, Duchma Stream, 23.x.1988, light, leg. János Oláh (OPC, alcohol).

Paratypes: same data as for holotype— 4 males (OPC, alcohol); same data as for holotypes— 3 males (NRM, alcohol).

Distribution: Vietnam.

Etymology: Taya , from the Vietnamese human minority Tay, name referring to their homeland where the species was collected.

Figures

FIGURES 22 – 24. Paduniella taya, new species, male holotype. 22 — genitalia, lateral; 23 — genitalia, ventral; 24 — phallic apparatus, lateral. Scale bar = 0.2 mm, refers to all figures.