Cladopelma costum Yan, Jin & Wang, 2008, sp. n.
Creators: name: Yan, Chuncai
name: Jin, Zhaohui
name: Wang, Xinhua
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chironomidae
Cladopelma
Cladopelma costum

description: Cladopelma costum sp. n.
(Figs 1–3)
Type material: Holotype male (BDN no. 06495), CHINA: Shaanxi Province: Xiangcheng County, Zhouzhi Town, Banfangzi, 10.viii.1994, light trap, W. Bu. Paratypes: 1 male, data as for holotype; 1 male, Chongqing Municipality, Nanchuan Town, Sanquan, 10.v.1986, sweep net, X. Wang; 1 male, Gansu Province, Tianshui City, Xiaolongshan Dangchuan, 1450 m a.s.l., 7.x.1993, light trap, W. Bu.
Diagnostic characters: The new species is easily distinguished from other known species in the genus by having reduced and bare superior volsella; anal point with a distinct high bare ridge; and medially swollen gonostylus.
Etymology: From Latin costa, ridge, referring to the anal point which has a high ridge.
. Description: Male (n = 4, unless otherwise stated). Total length 3.65–4.20, 3.96 mm. Wing length 1.98– 2.45, 2.19 mm. Total length / wing length 1.71–1.88, 1.82. Wing length / length of profemur 1.98–2.18, 2.06.
Coloration. Thorax yellowish brown to dark brown. Foreleg dark brown except basal 9/10 of femur yellowish green; mid and hind legs yellowish green except distal 1/3 of ta1 and ta2–5 dark brown. Abdomen with tergites I–V pale yellowish green and tergites VI–VIII yellowish brown, hypopygium dark brown.
Head. AR 2.38–2.66, 2.53; ultimate flagellomere 810–930, 888 Μm long. Frontal tubercles cylindrical, 10–12 (2) Μm long; 6–7 (2) Μm wide. Temporal setae 12–13 (2), including 1 (2) inner vertical, 5–6 (2) outer verticals, and 5–7 (2) postorbitals. Clypeus with 14–18, 17 setae. Tentorium 120–135 (3) Μm long, 25–35 (3) Μm wide. Palpomere lengths (in Μm): 45–50, 48; 50–62, 54; 175–200, 186; 175–200, 192; 275–320, 293. Palp segment 5/3 1.45–1.70, 1.58.
Thorax. Antepronotals 2–5, 4; acrostichals 8–12, 10; dorsocentrals 8–12, 10; prealars 5–7, 6. Scutellum with 22–28, 24 setae.
Wing (Fig. 1). VR 1.07–1.12, 1.10. R with 18–22, 20; R1 with 16–17, 17; R4+5 with 20–24, 23 setae. Brachiolum with 2–3, 3 setae. Squama with 11–15, 13 setae. Anal lobe strongly produced.
Legs. Foretibia with 3 subapical setae, 130–136, 133 Μm, 140–145, 142 Μm, and 145–160, 149 Μm long. Spurs of midtibia 25–33, 27 Μm and 30–40, 37 Μm long; comb with 30–42, 37 teeth, 10–11, 10 Μm long. Spurs of hind tibia 25–35, 30 Μm and 43–50, 48 Μm long; comb with 48–52, 51 teeth, 11–12, 12 Μm long. Sensilla chaetica of mid legs absent. Lengths (in Μm) and proportions of legs as in Table 1.
Hypopygium (Figs 2–3). Posterior margin of tergite IX with large process flanking anal point, bearing 16– 26, 19 setae and microtrichia. Laterosternite IX with 3–5, 4 setae. Anal point cone-shaped with high, bare ridge; 78–110, 91 Μm long; covered with microtrichia and with 12–16, 15 lateral setae. Superior volsella reduced, bare. Anal tergite bands V-shaped, joined medially. Phallapodeme 83–105, 94 Μm long. Transverse sternapodeme 20–38, 27 Μm long. Gonocoxite 125–155, 139 Μm long; with 7–10, 8 strong setae along inner margin. Gonostylus 180–192, 186 Μm long; strongly swollen medially, tapering towards apex; bearing 10–14, 12 setae along inner margin. HR 0.69–0.82, 0.75; HV 2.03–2.19, 2.13.
Distribution: The species is taken in Shaanxi, Gusu Province and in Chongqing City in China.
fe ti ta1 ta2 ta3 ta4 ta5 LR
description: Published as part of Yan, Chuncai, Jin, Zhaohui & Wang, Xinhua, 2008, Cladopelma Kieffer from the Sino-Indian Region (Diptera: Chironomidae), pp. 44-56 in Zootaxa 1916 on pages 46-48, DOI: 10.5281/zenodo.184615