Prismognathus arcuatus ( Houlbert, 1915 )

Huang, Hao & Chen, Chang-Chin, 2012, A review of the genera Prismognathus Motschulsky and Cladophyllus Houlbert (Coleoptera: Scarabaeoidea: Lucanidae) from China, with the description of two new species, Zootaxa 3255, pp. 1-36 : 15-16

Prismognathus arcuatus ( Houlbert, 1915)

( Figs. 65 , 95 , 113 , 132, 150–151 , 186–187 , 212 , 235 )

Eligmodontus arcuatus Houlbert, 1915: 17 [type locality: Ta-tsien-Lou (now Kangding, western Sichuan)], Fig. 1 , male; Fig. 2 , male head; Mizunuma & Nagai 1994: plate 147, Fig. 107 , male “ type ” from China (probably not type material), plate 155, Fig. 221 , male from “ Nepal ” (incorrect data).

Prismognathus arcuatus: Nagai 2005: 35 ; Fujita 2010: 169, plate 101, Fig. 508-1, male from Sichuan.

Material examined. CHINA: Sichuan: 6 3, 1 Ƥ, Ya-an City, Yingjing County, Siping, VII.2007, H.-C. Shan leg.; 2 3 ( CHH, CYXW), Hanyuan County, Nimei, VII.2005, C.-J. Dai leg.; 1 3 ( IEAS), Shimian County, Liziping Nature Reserve, Gongyihai station, 2100m, 22.VII.2007, W.-X. Bi leg.

Identification. This species was originally described from western Sichuan and a male specimen was illustrated. There cannot be confusion in identifying this species due to the peculiar male characters. The male specimen illustrated and labeled by Mizunuma & Nagai (1994: plate 147, Fig. 107 ) as the “ type ” from “ China ” is unusual, with an anteriorly-divergent preocular margins of the head. The type specimen originally illustrated in the description paper has the preocular margins of the head parallel. Specimens from Sichuan examined by us match with the original description and illustration.

The female is here described and illustrated for the first time. Only a single female was examined by us, and it was identified as P. arcuatus due to the protruding lateral angles of the pronotum and the obsolete spermathecal gland in the female genitalia, which are very similar to those of the close species, P. haojiani .

Distribution. Western Sichuan.

Figures

FIGURE 235. Distribution of the other Chinese Prismognathus.

FIGURES 57 – 72. Head, pronotum and proleg of male in dorsal view. 57 – 60 — P. alessandrae; 57 — Weixi, Yunnan; 58 — Muli, Sichuan; 59 — Zhongdian, Yunnan, 60 — Pantiange, Weixi, Yunnan; 61 – 64 — P. shani; 61, 63 — paratypes, Siping, Yingjing, Sichuan; 62 — paratype, Erlangshan, Sichuan; 64 — holotype, Erlangshan; 65 — P. arcuatus, Siping, Sichuan; 66 — P. haojiani, holotype, Fanjingshan, Guizhou; 67 — P. sukkitorum, Tengchong, Yunnan; 68 — P. prossi, Siping, Sichuan; 69 — P. kanghianus kanghianus, Hekou, Yunnan; 70 – 71 — P. triapicalis ssp.; 70 — Dayaoshan, Guangxi; 71 — Fengyangshan, Zhejiang; 72 — P. prossi, Maoershan, Guangxi. Scale bar 10 mm.

FIGURES 95 – 110. Head, pronotum and proleg of female in dorsal view. 95 — P. arcuatus, Siping, Sichuan; 96 — P. haojiani, paratype, Fanjingshan, Guizhou; 97 — P. sukkitorum, Tengchong, Yunnan; 98 — P. dauricus, Liaoning; 99 – 100 — P. p ro s s i; 99 — Fanjingshan, Guizhou; 100 — Maoershan, Guangxi; 101 — P. kanghianus kanghianus, Hekou, Yunnan; 102 — P. formosanus, Taiwan; 103 – 105 — P. triapicalis subspecies; 103 – 104 — Dabashan, Chongqing; 105 — Fengyangshan, Zhejiang; 106 — P. triapicalis triapicalis, Erlangshan, Sichuan; 107 — P. s i n e n s i s, holotype, Kuatun; 108 – 110 — P. davidis davidis; 108 — Dabashan, Chongqing; 109 – 110 — Siping, Sichuan. Scale bar 10 mm.

FIGURES 111 – 131. Female canthus (not under the same scale). 111 — P. s h a n i, paratype, Labahe, Sichuan; 112 — P. nigricolor, paratype; 113 — P. arcuatus, Siping, Sichuan; 114 – 116 — P. p ro s s i; 114 — Siping, Sichuan; 115 — Fanjingshan, Guizhou; 116 — Maoershan, Guangxi; 117 – 119 — P. davidis davidis; 117 — Siping, Sichuan; 118 — Tianmushan, Zhejiang; 119 — Dabashan, Chongqing; 120 – 123 — P. triapicalis; 120 — Sichuan; 121 — Dabashan, Chongqing; 122 — Fengyangshan, Zhejiang; 123 — Dabashan, Chongqing; 124 — P. haojiani, paratype, Fanjingshan; 125 — P. dauricus, Liaoning; 126 — P. kanghianus kanghianus, Hekou, Yunnan; 127 — P. alessandrae, Zhongdian, Yunnan; 128 — P. sinen sis, holotype, Kuatun, Fujian; 129 — P. sukk ito rum, Tengchong, Yunnan; 130 — P. formosanus, Taiwan; 131 — P. siniaevi, Gongshan, Yunnan.

FIGURES 150 – 167. Aedeagus in ventral view. 150 – 151 — Prismognathus arcuatus, Sichuan; 152 – 153 — P. haojiani; 152 — holotype, Fanjingshan; 153 — paratype, Leigongshan, Guizhou; 154 — P. kanghianus kanghianus, Hekou, Yunnan; 155 — P. sukkitorum, Tengchong, Yunnan; 156 – 157 — P. triapicalis triapicalis, Sichuan; 158 – 161 — P. triapicalis subspecies; 158 – 159 — Dabashan, Chongqing; 160 — Fengyangshan, Zhejiang; 161 — Dayaoshan, Guangxi; 162 – 163 — P. prossi; 162 — Siping, Sichuan; 163 — Fanjingshan, Guizhou; 164 – 165 — P. siniaevi; 164 — Jinping, Yunnan; 165 — Gongshan, Yunnan; 166 — Tetrarthrius sukkiti, Gongshan, Yunnan; 167 — Cyclorasis fukinukii, Motuo, Tibet. Scale bars 1 mm for all.

FIGURES 168 – 199. Flagellum of the median lobe. 168 – 171 — P. davidis davidis; 168 — Qinling, Shaanxi; 169 — Erlangshan, Sichuan; 170 — Tianmushan, Zhejiang; 171 — Dabieshan, Anhui; 172 — P. davidis cheni, Taiwan; 173 — P. nigricolor, Gongshan, Yunnan, same specimen as in Fig. 226; 174 – 178 — P. klapperichi; 174 — Simianshan, Chongqing; 175 — Wuyishan, Fujian; 176 — Maoershan, Guangxi; 177 — Nanling, Guangdong; 178 — Baishanzu, Zhejiang; 179 — P. dauricus, Liaoning; 180 — P. s h a n i, paratype, Siping; 181 — P. alessandrae, Zhongdian, Yunnan; 182 – 184 — P. p ro s s i; 182 — Siping, Sichuan; 183 — Fanjingshan, Guizhou; 184 — Maoershan, Guangxi; 185 — P. siniaevi, Gongshan; 186 – 187 — P. arcuatus, Sichuan; 188 – 189 — P. haojiani; 188 — holotype, Fanjingshan; 189 — paratype, Leigongshan, Guizhou; 190 — P. kanghianus kanghianus, Hekou, Yunnan; 191 — P. sukkitorum, Tengchong, Yunnan; 192 – 194 — P. triapicalis triapicalis, Sichuan; 195 – 196 — P. triapicalis subspecies; 195 — Dabashan, Chongqing; 196 — Fengyangshan, Zhejiang; 197 — P. formosanus, Taiwan; 198 — Tetrarthrius sukkiti, Gongshan, Yunnan; 199 — Cyclorasis fukinukii, Motuo, Tibet. Figs. 168 – 198 under the same scale. Scale bars 1 mm for all.

FIGURES 212 – 223. Female genitalia and the central protrusion of the 9 th tergites (at left bottom or right bottom). 212 — Prismognathus arcuatus, Sichuan; 213 — P. haojiani, paratype, Fanjingshan; 214 — P. kanghianus kanghianus, Hekou, Yunnan; 215 — P. sukkitorum, Tengchong, Yunnan; 216 – 217 — P. triapicalis triapicalis, Sichuan; 218 – 219 — P. triapicalis subspecies; 218 — Dabashan, Chongqing; 219 — Fengyangshan, Zhejiang; 220 — P. davidis davidis, Siping, Sichuan; 221 — P. siniaevi, Gongshan; 222 — P. prossi, Maoershan, Guangxi; 223 — P. formosanus, Taiwan. Scale bars 1 mm for all.

FIGURES 1 – 20. Cladophyllus, Tetrarthrius and Cyclorasis species. 1 – 4 — Cladophyllus oberthuri, male (Weixi, Yunnan); 5 – 8 — Cladophyllus bousqueti, male (Pianma, Yunnan); 9 – 12 — Cladophyllus nobuhikoi, male (Jinping, Yunnan); 13 – 14 — Cladophyllus oberthuri, female (Weixi, Yunnan); 15 – 16 — Cladophyllus bousqueti, female (Pianma, Yunnan); 17 – 18 — Tetrarthrius sukkiti, female (Motuo, Tibet); 19 – 20 — Cyclorasis nosei, female (Motuo, Tibet). 1, 5, 9, 13, 15, 17, 19 — head and pronotum in dorsal view; 2, 6, 10 — 9 th abdominal segment; 3, 7, 11 — aedeagus; 4, 8, 12 — flagellum; 14, 16, 18, 20 — female genitalia. Scale bars 5 mm for habitus, 1 mm for genitalia.