Hydrosmittia kisotriangulata (Sasa et Kondo) Ferrington Jr & Saether, 2011

Ferrington Jr, Leonard C. & Saether, Ole A., 2011, A revision of the genera Pseudosmittia Edwards, 1932, Allocladius Kieffer, 1913, and Hydrosmittia gen. n. (Diptera: Chironomidae, Orthocladiinae) 2849, Zootaxa 2849 (1), pp. 1-314 : 109-111

Hydrosmittia kisotriangulata (Sasa et Kondo) comb. n.

( Fig. 36 A )

Pseudosmittia kisotriangulata Sasa et Kondo, 1993: 101 ; Yamamoto 2004: 89, Saether 2006: 33 .

Material examined: JAPAN: Honshu, Aichi Pref., Bisai, Kiso River , holotype, 21.xii.1989, S. Kondo (NMST, No. 222: 73) .

Diagnostic characters: The male imago differs from H. falsicostata by having an AR of about 2.0. Like H. falsicostata and H. ruttneri the inner verticals appear to be lacking. The very large size, the high antennal ratio and the strong virgal spines ( Fig. 34 A ) will separate the species from all other Hydrosmittia .

The male is redescribed by Saether (2006: 33). Distribution and ecology

The species is known only from the type locality where it emerged from a bottom sample in the Kiso River. Like H. ruttneri and H. falsicostata , the species thus probably is truly aquatic.

Figures

FIGURE 34. Allocladius sp., immmatures. A–B, A. sp. Chile”. A—male pupa, dorsal view; B—male pupa, ventral view. C–F, A. sp. “Falkland Islands”, larva. C—labrum and epipharynx; D—antenna; E—mandible; F—mentum. (From Andersen et al. 2010.)

FIGURE 36. Hydrosmittia spp., male hypopygium, left dorsal aspect, right ventral aspect. A—H. kisotriangulata (Sasa et Kondo) comb. n.; B—Hydrosmittia togadistalis (Sasa, Watanabe et Arakawa) comb. n.