Paracladopelma pseudocamptolabis, 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 : 41-43

Paracladopelma pseudocamptolabis sp. nov.

( Figs. 22–24 )

Type material. Holotype: male, Russia, Primorye Territory, Ilistaya River near Lyalichy Village, 4.VIII.2003, leg. O. Zorina; Paratypes: 14 males, the same data as holotype; 1 male, Ussuri River opposite Mikheevskiei Island, 1.VI.1992, leg. T. Tiunova; 2 males, Ussuri River about 1.5 km above Kirovsky Village, 23.IX.1991, leg. T. Tiunova; 6 males, Bolshaya Ussurka near Salskoe Village, 16.VII.2003, leg. O. Zorina; 1 male, Bolshaya Ussurka about 2 km from Zvenigoroda Village, 8.VI.2004, leg. T. Tiunova; 1 male, Bikin River about 300 m from bridge of route Vladivostok­Khabarovsk, 13.VII.2000, leg. T. Tiunova; 5 males, Khabarovsk Territory, Ussuri River near Zabaeikalskoe Village, 26.VII.2003, leg. T. Tiunova; 1 males, Amur River near Troitzkoe Village, 2.VIII.1996, leg. T. Tiunova, T. Arephina; 1 male, Bira River near Zheltyei Jar Village, 2.IX.2004, leg. T. Tiunova; 1 male, Amursk Region, Norski Nature Reserve, Nora River basin, Sorokoverstova duct, 4.IX.2004, leg. T. Tiunova.

Etymology. The prefix pseudo ­ is from Latin, meaning "incorrect" or "erroneous", referring to the similarity of this species to P. camptolabis ( Kieffer, 1913) .

Diagnostic characters. This species has a total length of 2.5–4.0 mm, wing length 1.4–2.0 mm, terminal combs of the median and hind tibiae with 2 spurs, anal point narrow and parallel sided, superior volsella symmetrical club­shaped, inferior volsella in the apical part rectangular without setae, and the gonostylus widest at about the distal 1/3.

Male imago (n = 10)

Total length 2.5–4.0 mm. Wing length 1.4–2.0 mm. Total length/wing length 1.56–2.42.

Coloration. 1. Scape yellowish brown, flagellomeres dark brown; ground color of thorax pale yellow, mesonotal stripes yellowish brown, 2/3 of postnotum brown; P1 yellow, except brown on distal 1/2 f1 and t1, ta1–5; P2 and P3 yellowish; abdomen yellowish. Antenna, mesonotal stripes, and 2/3 postnotum dark brown; legs brown; abdomen yellowish brown.

Head. Frontal tubercles 9.9–18 m long and 4.5–6.75 m wide. Verticals 10–16. Clypeus with 12–19 setae. Antenna 912–1235 m long. AR 1.82–2.05. Maxillary palp 392–522 m long, lengths of last 4 palpomeres (in m): 36–45; 95–122; 104–158; 158–207. Palp length/head width 0.99–1.06; antenna length/palp length 2.28–2.45.

Thorax. Antepronotals 5–10, acrostichals 7–18, dorsocentrals 6–12, prealars 2–3, supraalars 1. Scutellum with 4–7 setae.

Wing. Length 1.4–2.0 mm, width 0.40–0.67. VR 1.14–1.24. R with 5–13 setae, R1 without setae, R4+5 with 4–21 setae. Squama with 2–7, brachiolum with 1–2 setae.

Legs. Terminal combs of median and hind tibiae with 2 spurs (length 22 m), rarely terminal combs of hind tibiae with 3 spurs. BR1 2.2–2.6, BR2 3.4–4.0, BR3 5.0–5.4.

Length (in m) and proportions of leg segments:

Hypopygium ( Figs. 22–24 ). Anal tergite bands Y­type. Anal point (length 50–59 m, width 8–9 m) narrow and parallel side. Laterosternite IX with 1–2 setae. Transverse sternapodeme 36–45 m long. Gonocoxite (length 68–126 m) with 3–4 setae. Superior volsella symmetrical pad­like (length 32–50 m, width 32–50 m) with 10–14 short setae. Inferior volsella rounded apically (length 63–68 m, width 27–32 m). Gonostylus (length 117–171 m, width 27–36 m) slightly curved, widest at about distal 1/3. HR 0.54–0.74.

Remarks. This new species is similar to P. c a m p t o l a b i s ( Kieffer, 1913) and P. hibarasecunda Sasa, 1993 but is distinguished from them by the following features:

­ P. pseudocamptolabis : total length 2.5–4.0 mm, wing length 1.4–2.0 mm, terminal combs of median and hind tibiae with 2 spurs, anal point narrow and parallel sided, superior volsella symmetrical club­shaped, inferior volsella with more or less rectangular distal margin without setae, gonostylus widest at about distal 1/3 length.

­ P. camptolabis (Kieffer sensu Jackson 1977): total length 5.0 mm, wing length 2.5 mm, terminal combs of median and hind tibiae with 1 spur, anal point widest at about apical 1/3, superior volsella slightly foot­shaped, inferior volsella apically rounded without setae, gonostylus widest at about proximal 1/3 length.

­ P. hibarasecundum : total length 3.68 mm; wing length 1.67 mm; terminal combs of median and hind tibiae with 2 spurs; anal point long, narrow and pointed apically; superior volsella symmetrical club­shaped; inferior volsella composed of small knob­like process bearing 2 short setae at the base of superior volsella and triangular process covered by microtrichia; gonostylus widest at about distal 1/3 length.

Distribution. This species is widespread in the Russian Far East.

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.