Paracladopelma nigritulum (Goetghebuer)

Zorina, Oksana V., 2006, Non­biting midges of the genus Paracladopelma Harnisch (Diptera: Chironomidae) from the Russian Far East, Zootaxa 1134, pp. 29-49 : 40-41

Paracladopelma nigritulum (Goetghebuer)

( Figs. 20–21 )

Chironomus (Cryptochironomus) nigritulus Goetghebuer, 1942: 3 Paracladopelma nigritula (Goetghebuer) ; Lenz (1959: 440)

Chironomus (Chironomus) claripennis Edwards, 1929: 387

Tendipes (Cryptochironomus) claripennis (Edwards) ; Goetghebuer (1937: 35) Paracladopelma obscura Brundin, 1949: 763 ; Reiss (1968: 203)

Material. 1 male, Russia, Primorye Territory, Ussuri River at about 4–5 km from Kamenka Village, 3.VII.1993, leg. T. Tiunova; 2 males, Sakhalin Island, Ossoy River, 19.VIII.2001, leg. T. Tiunova; 1 male, Evay River, 7–8.IX.2001, leg. T. Tiunova; 1 male, Tym River 12 km from Nogliki Village, 30–31.VII.2002, leg. E. Makarchenko; 3 males, Starodinskaya River near 45–50 km from Krasnoyarsk Village, 22.VII.2002, leg. E. Makarchenko; 1 male, Orlovka River near 5 km from Pilvo Village, 25.VII.2003, leg. E. Makarchenko; 1 male, Tym River 2 km from railway bridge through Parkata River, 2–3.VIII.2003, leg. E. Makarchenko.

Male imago (n = 7)

Total length 3.5 mm. Wing length 2.5–2.8 mm. Total length/wing length 1.49.

Coloration. Scape and flagellomeres dark brown; ground color of thorax brown, mesonotal stripes and postnotum dark brown; legs and abdomen brown.

Head. Frontal tubercles 13.5–18 m long and 9 m wide. Verticals 13–19. Clypeus with 12–15 setae. Antenna 1273–1482 m long. AR 2.19–2.55. Maxillary palp 581–630 m long, lengths of last 4 palpomeres (in m): 54–68; 145–167; 158–180; 216–234. Palp length/head width 0.95–0.99; antenna length/palp length 2.08–2.35.

Thorax. Antepronotals 6–13, acrostichals 0, dorsocentrals 8–12, prealars 3–6, supraalars 1. Scutellum with 10–12 setae.

Wing. Length 2.5–2.8 mm, width 0.70–0.76. VR 1.02–1.06. R with 11–19, R1 with 11–16, R4+5 with 12–21 setae. Squama with 9–18, brachiolum with 2 setae.

Legs. Terminal combs with 2 spurs (length 18 m). LR1 1.25–1.53, LR2 0.48–0.52, LR3 0.59–0.63; SV1 1.45–1.72, SV2 4.0–4.15, SV3 3.07–3.32; BV1 1.78–1.92, BV2 2.84–3.10, BV3 2.61–2.80; BR1 2.5–3.0, BR2 3.38–3.83, BR3 4.29–5.38.

Hypopygium ( Figs. 20–21 ). Median longitudinal ridge of anal tergite bands absent. Anal point (length 77–86 m, width 14 m) widest in apical half. Laterosternite IX with 2–6 setae. Transverse sternapodeme 72–81 m long. Gonocoxite (length 108–144 m) with 3–4 setae. Superior volsella (length 36–45 m, width 27–32 m) with membranous, bare dorsolateral lobe and ventromedian lobe covered by microtrichia and 8–10 setae. Inferior volsella apically rounded (length 99–122 m, width 27–41 m). Gonostylus (length 162–198 m, width 36 m) curved, widest at about proximal 1/3. HR 0.64–0.75.

Distribution. Palaearctic species. In the Russian Far East, this species occurs on Sakhalin Island and in the Primorye Territory ( Makarchenko et al. 2005). It is recorded from Russia for the first time.

Figures

FIGURES 20 – 24. Male imago Paracladopelma nigritulum (20 – 21) and Paracladopelma pseudocamptolabis sp. nov. (22 – 24). 20, 22. Hypopygia. 21, 24. Superior volsellae. 23. Gonostylus. Scale bar = 50 m.