Paracladopelma augustus, Zorina, Oksana V., 2006

Zorina, Oksana V., 2006, Non­biting midges of the genus Paracladopelma Harnisch (Diptera: Chironomidae) from the Russian Far East, Zootaxa 1134, pp. 29-49 : 30-31

Paracladopelma augustus sp. nov.

( Figs. 1–3 )

Type material. Holotype: male, Russia, Khabarovsk Territory, Amur River basin, Bira River in 4 km from the Zheltyei Jar Village, 12–15.VIII.2004, leg. T. Tiunova.

Etymology. Latin noun (a ugustus) for the month of August. The species is named for the month when material was collected.

Diagnostic characters. The species has a total length of 4.0 mm; wing 2.15 mm long; AR 2.19; terminal combs of median and hind tibiae with 2 spurs; anal tergite bands Y­type; posterior part of tergite IX elongated and triangular; superior volsella foot­shaped with elongated base and rectangular apical part; gonostylus long and widest at about apical 1/3, curved, apically pointed.

Male imago (n = 1)

Total length 4.0 mm. Wing length 2.15 mm. Total length/wing length 1.86.

Coloration. Scape yellowish brown, flagellomeres dark brown; ground color of thorax pale yellow, mesonotal stripes yellow, postnotum brown; P1 yellow, except brown on distal 1/3 f1 and t1; P2 and P3 yellowish brown; abdomen brown, hypopygium brown, superior and inferior volsellae yellowish.

Head. Frontal tubercles invisible. Verticals 16. Clypeus with 18 setae. Antenna 1273 m long. AR 2.19. Maxillary palp 545 m long, lengths of last 4 palpomeres (in m): 59; 108; 162; 216. Antenna length/palp length 2.34.

Thorax. Antepronotals 8, acrostichals 13, dorsocentrals 11–14, prealars 5, supraalars 1. Scutellum with 17 setae.

Wing. Length 2.15 mm, width 0.61. VR 1.11. R with 17–19 setae, R1 with 12–16 setae, R4+5 with 19–20 setae. Squama with 9–11 setae, brachiolum with 1–2 setae.

Hypopygium ( Figs 1–3 ). Anal tergite bands of Y­type. Posterior part of tergite IX elongated, triangular. Anal point (length 63 m, width 15.8 m) widest at about distal 2/3. Laterosternite IX with 1 seta. Transverse sternapodeme 63 m long. Gonocoxite (length 90 m) with 4–5 setae. Superior volsella foot shaped with elongated base and rectangular apical part (length 63–68 m, width 16 m) covered by microtrichia and with 5–8 setae. Inferior volsella rounded apically (length 95 m, width 32 m). Gonostylus long and narrow (length 203 m, width 32 m), curved, apically pointed, widest at about distal 1/3. HR 0.44.

Distribution. Known only from the type locality, the Bira River (Amur River basin).

Figures

FIGURES 1 – 5. Male imago Paracladopelma augustus sp. nov. (1 – 3) and Paracladopelma doris (4 – 5). 1, 4. Hypopygia. 2, 3, 5. Superior volsellae. Scale bar = 50 m.