Paracladopelma nais (Townes)

Zorina, Oksana V., 2006, Non­biting midges of the genus Paracladopelma Harnisch (Diptera: Chironomidae) from the Russian Far East, Zootaxa 1134, pp. 29-49 : 37-38

Paracladopelma nais (Townes)

( Figs. 14–15 )

Harnischia (Cladopelma) nais Townes, 1945: 149 ; Roback (1957: 101) Chironomus (Cryptochironomus) nais (Townes) ; Sublette & Sublette (1965: 168) Paracladopelma nais (Townes) ; Hudson (1971: 161)

Material. 1 male, Russia, Primorye Territory, Barabashevka River, 23.V.2002, leg. T. Tiunova.

Male imago (n = 1)

Wing length 2.5 mm.

Coloration. Scape and flagellomeres brown; ground color of thorax pale brown, mesonotal stripes brown, 2/3 of postnotum brown; legs yellowish brown; abdomen yellowish brown.

Head. Frontal tubercles 23 m long and 9 m wide. Verticals 15–17. Clypeus with 15 setae. Antenna 1406 m long. AR 2.08. Maxillary palp 630 m long, lengths of last 4 palpomeres (in m): 54; 135; 185; 257. Antenna length/palp length 2.23.

Thorax. Antepronotals 5, acrostichals 13, dorsocentrals 11, prealars 3, supraalars 1. Scutellum with 13 setae.

Wing. Length 2.5 mm, width 0.7. VR 1.16. R with 14 setae, R1 with 17 setae, R4+5 with 24 setae. Squama with 6 setae, brachiolum with 2 setae.

Legs. Terminal combs of median and hind tibiae with 1 spur (length 27 m). LR1 1.74, LR2 0.61, LR3 0.73; SV1 1.36, SV2 3.25, SV3 2.68; BV1 1.79, BV2 2.98, BV3 2.66; BR1 2.5, BR2 5.0, BR3 4.57.

Hypopygium ( Figs. 14–15 ). Median longitudinal ridge of anal tergite bands present. Anal point (length 81 m, width 18 m) widest in apical half. Laterosternite IX with 0–2 setae. Transverse sternapodeme 81 m long. Gonocoxite (length 122 m) with 5 setae. Superior volsella foot­shaped (length 50–59 m, width 41 m) with 11–13 setae. Inferior volsella apically slight pointed (length 126 m, width 41 m). Gonostylus (length 185 m, width 32 m) slightly curved, apically pointed. HR 0.66.

Distribution. Holarctic. In the Palaearctic Region, the species has been recorded as larvae from Romania ( Tudorancea & Tudorancea 1998). It is recorded from the East Palaearctic for the first time.

Figures

FIGURES 14 – 19. Male imago Paracladopelma nais (14 – 15) and Paracladopelma nereis (16 – 19). 14, 16. Hypopygia. 15, 18, 19. Superior volsellae. 17. Anal point. Scale bar = 50 m.