Paratrichocladius unabrevis Sasa

Fu, Yue, Saether, Ole A. & Wang, Xinhua, 2012, A review of Paratrichocladius Santos Abreu from the Sino-Indian Region (Diptera: Chironomidae: Orthocladiinae), Zootaxa 3478, pp. 453-482 : 477

Paratrichocladius unabrevis Sasa

( Fig. 14 A–C)

Paratrichocladius unabrevis Sasa, 1996: 58 ; Yamamoto 2004: 75.

Material examined. JAPAN: Honshu, Toyama Prefecture, Unazuki, holotype male, 27. ix. 1984, M. Sasa (No. 279: 11).

Diagnostic characters. The species can be separated from other members of the genus by a small AR about 0.30; the broad inferior volsella with rounded, almost rectangular margin with many strong setae; and tergite IX well developed and covering the whole inferior volsella in dorsal view.

Additions to description. Total length / wing length 2.1. Wing length / length of profemur 2.2. Outer verticals 4, frontals 6. Tentorium 150 µm long, 25 µm wide. Dorsocentrals 10, scutellars 8. Squama with 7 setae. Palpomeres length (in µm): 18, 50, 70, 100, 120. Palpomere 2 and 3 ellipsoid, 4 and 5 rectangular, Palpomeres 5/3 1.7. Laterosternite IX with 9 long setae. Transverse sternapodeme 75 µm long, with well developed oral projections. Gonocoxite 185 µm long. Gonostylus 85 µm long. Megaseta 15 µm long. HR 2.2, HV 2.8. The hypopygium of holotype are re-drawn as in Fig. 14 A–C.

Distribution. The species is recorded from Japan.

Figures

FIGURE 14. Paratrichocladius unabrevis Sasa, male. A— Wing. B— Hypopygium, dorsal view. C— Hypopygium, ventral view.