Paratrichocladius ater Wang et Zheng

Fu, Yue, Saether, Ole A. & Wang, Xinhua, 2012, A review of Paratrichocladius Santos Abreu from the Sino-Indian Region (Diptera: Chironomidae: Orthocladiinae), Zootaxa 3478, pp. 453-482 : 456-457

Paratrichocladius ater Wang et Zheng

( Fig. 2 A–K)

Paratrichocladius ater Wang et Zheng, 1990: 243 ; Wang 2000: 638.

Material examined. CHINA: Jilin Province, Jilin City, Changbaishan Mountain (43°55’ N, 126°26’ E), alt. 1700 m, 25. vi. 1986, light trap, holotype male, Xinhua Wang (BDN No. 05384), Additional material: Sichuan Province: Ganzi Autonomous State, Luding County (29°55’ N, 102°14’ E), alt. 1395 m, light trap, 1 male, 7. vi. 1996, Xinhua Wang (BDN No. 12340); Ganzi Autonomous State, Yajiang County (30°02’ N, 101°01’ E), alt. 1900 m, light trap, 1 male, 6. vi. 1996, Xinhua Wang (BDN No. 12247); Wenchuan County, Yingxiu Town (31°03’ N, 103°29’ E), alt. 994 m, light trap, 2 males, 15. vii. 1987, Xinhua Wang (BDN No. 0 4571, 04577); Kangding County, Wasigou (30°03’ N, 101°57’ E), alt. 3700 m, light trap, 2 males, 15. vi. 1996, Xinhua Wang (BDN No. 23796, 23797); Yunnan Province: Lijiang Naxizu Autonomous County, Shizishan Mountain (26°51’ N, 100°15’ E), alt. 2400 m, 1 male, 15. vii. 2001, Xinhua Wang (BDN No. 13145); Eryuan County, Niujie Town, Meici River (26°6' N, 99°56' E), alt. 2332 m, light trap, 3 males, 2. vi. 1996, Changfa Zhou (BDN No. 0 9757, 0 9921, 09923); Dali County (25°40’ N, 100°12’ E), alt. 2300 m, light trap, 1 male, 22. v. 1996, Xinhua Wang (BDN No. 11049); Ningxia Autonomous Region: Wuzhong City, Tongxin County, Changshantou Farm (36°58’ N, 105°55’ E), alt. 1353 m, 2 males, 4. viii. 1987, Xinhua Wang (BDN No. 0 5387, 05388); Yinchuan City, Helan County, Helanshan Mountain (38°29’ N, 106°08’ E), alt. 1118 m, light trap, 4 males, 26. vii. 1987, Xinhua Wang (BDN No. 0 54390, 0 5397, 0 5399, 05400); Shandong Province: Taishan Mountain (36°15’ N, 117°02’ E), alt. 1500 m, 3 males, 26. v. 1994, Xinhua Wang (BDN No. 0 3251, 0 3245, 03247),; Hebei Province: Weichang County, Qipan Town (42°10’ N, 117°57’ E), alt. 1800 m, light trap, 3 males, 16. vii. 2001, Yuhong Guo (BDN No. 23352, 23350, 23388); Chengde City, West Railway Station (40°58’ N, 117°57’ E), alt. 360 m, light trap, 4 males, 12. vii. 2001, Yuhong Guo (BDN No. 23325, 23326, 23327, 23328); Henan Province: Xinyang County, Jigongshan Mountain (31°48’ N, 114°05’ E), alt. 690 m, light trap, 9. vii. 1997, 1 male, Xinhua Wang (BDN No. 13145); Shananxi Province Baoji City, Feng County, Qinling (33°58’ N, 106°46’ E), alt. 1302 m, sweeping, 1 male, 27. vii. 1994, Wenjun Bu (BDN No. 08282); Gansu Province: Tianshui City, Maijishan Mountain (34°21’ N, 106°00’ E), alt. 1600 m, 7. viii. 1986, 1 male, Xinhua Wang (BDN No. 16178).

Diagnostic characters. The adult male can be separated from other members of the genus by having high AR; humeral pit well developed, almost rectangular; inferior volsella bilobed, and gonostylus with crista dorsalis. It is similar to P. t a m a a t e r Sasa in the shape of inferior volsella, but differ in the higher antennal ratio of 1.6–2.0, 1.8 as compared to 1.14 in P. tamaater ; in the coloration and in the chaetotaxy of the abdomen.

Additions to description (n = 31). Total length 2.7–3.6, 3.1 mm. Wing length 1.4–2.0, 1.8 mm. Total length/ wing length 1.7–2.0, 1.8. Wing length/ length of profemur 2.3–2.8, 2.6. Temporal setae 8–11. Tentorium 140–180, 159 µm long, 35–45, 39 µm wide. Stipes 140–160, 155 µm long; 8–10, 9 µm wide. Palpomere 5/ 3 1.4–1.9, 1.7. Dorsocentrals 15–18, 16 setae; prealars 4–5. Scutellum with 4–8, 6 setae. Squama with 11–15, 13 fringe setae. Sensilla chaetica 10–14, 12 on ta1 of P3. Laterosternite IX with 6–8, 7 long setae. Phallapodeme 65–80, 75 µm long, transverse sternapodeme 100–195, 135 µm long, with oral projections. Gonocoxite 185–238, 215 µm long. Gonostylus 78–108, 88 µm long, with crista dorsalis. Megaseta 10–15, 13 µm long. HR 2.1–3.1, 2.5, HV 3.1–3.5, 3.3.

Distribution. The Chinese specimen was collected in Ningxia Autonomous Regions; Jilin, Liaoning, Hebei, Henan, Shandong and Gansu Provinces (Palaearctic China); Shananxi (Baoji City), Yunnan and Sichuan Provinces (Oriental China). This is the first record from Oriental China.

Remarks. The shape of the inferior volsella varies among different localities ( Fig. 2 A–K).

Figures

FIGURE 2. Paratrichocladius ater Wang et Zheng, male. A – K— Inferior volsella.