Chydaeus convexus Ito, 2002

Kataev, Boris M., Liang, Hongbin & Kavanaugh, David H., 2012, Contribution to knowledge of the genus Chydaeus in Xizang Autonomous Region [Tibet] and Yunnan Province, China (Coleoptera, Carabidae, Harpalini), ZooKeys 171, pp. 39-92 : 59-61

Chydaeus convexus Ito, 2002 Figs 58 70

Material examined.

A total of 125 specimens (71 males and 54 females, including 35 males and 26 females in CAS, 35 males and 27 females in IOZ, and 1 male and 1 female in ZIN) were examined from the following localities: China. Yunnan Province. Longling County : 1 female, Longjiang, Xiaoheishan, tree & log, 24.83696°N, 98.75735°E, 2120 m, 27.V.2005, H.B. Liang & J.L Yang leg. (IOZ); 1 male, same data, but riverside, 24.82886°N, 98.75917°E, 2010 m, 25.V.2005, H.B. Liang leg. (IOZ); 3 males, 1 female, same data, but roadside, 24.82888°N, 98.76001°E, 2020 m, 28.V.2005, D. Kavanaugh & D.Z. Dong leg. (CAS); 2 female, same data, but riverside, 26.V.2005, D. Kavanaugh leg. (CAS). Longyang County (District): 1 female, Bawan, 34 km from Bawan on Tengchong Road, 2310 m, 24.92944°N, 98.75917°E, 16.X.2003, D.Z. Dong leg. (IOZ); 1 male, Bawan, Luokeng, 41 km on road to Tengchong, 24°56'23.2"N, 98°45'11.6"E, 2440 m, 15.X.2003, day, H.-B. Liang & X.C. Shi leg. (IOZ); 1 female, Bawan, 41 km on old road to Tengchong, 25°56'15.0"N, 98°45'02.8"E, 2486 m, 11.X.2003, H.B. Liang leg. (IOZ); 1 male, Gaoligong Shan, Baoshan Pref., Nankang Yakou, 24°49.9'N, 98°46.0'E, 2130 m, 4-7 IX.1998, Stop 98-129A, D. Kavanaugh, C.E. Griswold, C.L. Long, R. Li & H.-X. He leg. (CAS); 1 male, same data as preceding (IOZ); 1 female, same data, but 24.81944°N, 98.77111°E, 2130 m, 27.X.2003, D.Z. Dong leg. (IOZ); 1 male,1 female, Bawan Town, Nankang Yakou, roadside, 24°49'33.4"N, 98°46'20.0"E, 2130 m, 26.X.2003, H.B. Liang & X.C. Shi leg. (IOZ); 1 male, 6 females, same data, but 24.81944°N, 98.77111°E, 2130 m, 31.X.2003, D.Z. Dong leg. (CAS, IOZ); 5 males, 4 females, Bawan Town, Nankang forest station, 24°49'28.8"N, 98°46'43.6"E, 2085 m, 27.X.2003, H.B. Liang & X.C. Shi leg. (CAS, IOZ); 1 female, Bawan, Nankang station, 24.82614°N, 98.77602°E, 1900 m, 26.V.2005, D.Z. Dong leg. (IOZ); 1 female, same data, but 24.83178°N, 98.76462°E, 2180 m, 22.V.2005, D. Kavanaugh & D.Z. Dong leg. (CAS); 6 males, 4 females, Bawan, 36-37 km on old road to Tengchong, 24°56'03.3"N, 98°46'46.4"E, 2150 m, 12.X.2003, H.B. Liang & X.C. Shi leg. CAS, IOZ); 1 male, 3 females, Bawan, Bawan - Tengchong Road km 29-35, 2000-2350 m, 24.92916°N, 98.75861°E, 12.X.2003, D.Z. Dong leg. (CAS, IOZ); 1 male, 4 females, Bawan, Yakou to Sanchawa, along road, 24°56'50.5"N, 98°45'20.0"E, 2300 m, 13.X.2003, H.B. Liang & X.C. Li leg. (CAS, IOZ); 4 males, Bawan, Dasheyao forest station - Yakou, 24°55'37.4"N, 98°45'09.8"E, 2404 m, 12.X.2003, H.B. Liang & X.C. Shi leg. (CAS, IOZ); 1 male, 2 females, Bawan, Dasheyao, 24.92989°N, 98.75862°E, 2320 m, 1.VI.2005, Dao Zhilong leg. (CAS, IOZ); 2 males, same data, but 24.92994°N, 98.75850°E, 2300 m, 3.VI.2005, D. Kavanaugh & D.Z. Dong leg. (CAS, IOZ); 2 males, 2 females, Bawan, Nankang station, 24.82260°N, 98.78201°E, 2060 m, 23.V.2005, H.B. Liang leg. (CAS, IOZ); 1 male, same data, but 24.82600°N, 98.77690°E, 2090 m, 28.V.2005, D. Kavanaugh leg. (CAS); 1 female, same data, but 24.82587°N, 98.76832°E, 2048 m, 22.V.2005, H.B. Liang leg. (IOZ); 1 female, same data, but 24.83178°N, 98.76462°E, 2180 m, 22.V.2005, D. Kavanaugh & D.Z. Dong leg. (CAS); 1 female, same data, but 24.82614°N, 98.77602°E, 1900 m, 26.V.2005, D.Z. Dong leg. (IOZ); 2 males, Bawan, Luoshuidong, 2300-2480 m, 24.93278°N, 98.75333°E, 13.X.2003, D.Z. Dong leg. (CAS, IOZ); 11 males, 4 females, Bawan, Sanchahe, 24.94755°N, 98.75564°E, 2300 m, 3.VI.2005, H.B. Liang & H.M. Yan leg. (CAS, IOZ); 4 males, same data, but 24.94865°N, 98.75193°E, 2350 m, 30.V.2005, H.B. Liang leg. (CAS, IOZ); 1 male, same data, but 2300 m, 24.94849°N, 98.75699°E, 30.V.2005, D. Kavanaugh leg. (IOZ); 2 males, 2 females, same data, but 3.VI.2003, D. Kavanaugh & D.Z. Dong leg. (CAS, IOZ); 1 female, same data, but D.Z. Dong leg. (IOZ). Tengchong County: 1 male, Jietou, Datang, Dahetou, 25.69700°N, 98.68059°E, 1800-2000 m, 16.VI.2005, Huang Hao leg. (IOZ); 8 males, 6 females, Dahaoping, 46-51 km on old road, 24°57'25.6"N, 98°44'12.3"E, 2220 m, 17.X.2003, H.B. Liang & X.C. Shi leg. (IOZ, ZIN); 2 males, Dahaoping, 43 km from Bawan on Tengchong Road, 2410 m, 24.95361°N, 98.73333°E, 14.X.2003, D.Z. Dong leg. (IOZ); 3 males, 3 females, Dahaoping, along a small stream, 24°58'20.8"N, 98°44'20.1"E, 2170 m, 18.X.2003, H.B. Liang & X.C. Shi leg. (CAS, IOZ); 1 male, Shangying, 5-8 km E of Dahaoping, 2358 m, 24.93417°N, 98.74750°E, 18.X.2003, D.Z. Dong leg. (IOZ); 4 males, Shangying, 42-46 km on road from Bawan, 24°57'13.0"N, 98°44'32.1"E, 2290 m, 14.X.2003, H.B. Liang & X.C. Shi leg. (CAS, IOZ); 1 male, Shangying, Longjiang bridge, riverside, 25°02'29.7"N, 98°40'22.9"E, 1335 m, 19.X.2003, H.-B. Liang & S. Yang leg. (IOZ).

Distribution.

Fig. 58 . This species was previously known from several localities, all restricted to the southern parts of the Gaoligong Shan in western Yunnan Province, China, at elevations of 2200-2400 m ( Kataev and Schmidt 2006). The new material was also collected on the southern parts of Gaoligong Shan, at elevations of 1800-2500 m, within Longling, Longyang, and Tengchong counties, western Yunnan Province, China.

Habitat

. Specimens were collected in roadside and road cut open areas, on open, disturbed stream banks, and in other disturbed areas ( Fig. 70 ), hidden under stones and other debris during daylight hours and active on the soil surface at night.

Remarks.

Kataev and Schmidt (2006) indicated the absence of the parascutellar setigerous pore on elytra in Chydaeus convexus as one of the distinctive features of this species belonging to the semenowi group. The examination of the addition material revealed the high variability of this character. Among 125 specimens examined, the parascutellar setigerous pore was absent from only 55 specimens, in a few from only one elytron.

Figures

Figures 58 - 59. Toporelief map of southeastern Asia, illustrating localities for Chydaeus species 58 Chydaeus satoi Ito = yellow square and Chydaeus convexus Ito = red dots 59 Chydaeus semenowi (Tschitscherine) = red dots and Chydaeus malaisei Kataev & Schmidt = yellow squares. Only new records reported here are shown. Scale bar = 300 km (in 100 km increments).

Figures 70 - 71. Digital photographs of habitats for Chydaeus species 70 Nankang Yakou, Longyang County, Yunnan Province, China, ca. 2130 m; locality for Chydaeus andrewsi andrewsi Schauberger, Chydaeus convexus Ito, and Chydaeus salvazae Schauberger 71 Danzhu Valley, Gongshan County, Yunnan Province, China, ca. 2700 m; locality for Chydaeus semenowi (Tschitscherine).

Figures 68 - 69. Digital photographs of habitats for Chydaeus species 68 Kongdang, Gongshan County, Yunnan Province, China, ca. 1525 m; locality for Chydaeus andrewsi andrewsi Schauberger 69 Dulong Valley N of Kongdang, Gongshan County, Yunnan Province, China, ca. 1550 m; locality for Chydaeus andrewsi andrewsi Schauberger and Chydaeus obtusicollis Schauberger.