Ceruchus deuvei Boucher & Kral 1997

Huang, Hao, Imura, Yûki & Chen, Chang-Chin, 2011, Notes on the genus Ceruchus MacLeay from China, with the description of a new species (Coleoptera: Scarabaeoidea: Lucanidae), Zootaxa 2906, pp. 1-42 : 4-5

3. Ceruchus deuvei Boucher & Kral 1997

( Figs. 219 , 227 , 268 )

Specimens examined. CHINA: Sichuan Province: 1Ƥ (CYI), Lixian County, above Miyaluo, 2700m, 4.V.2008, Y. Imura leg. (1Ƥ dissected).

Identification. The following male characters were described or illustrated in the original description ( Boucher & Kral 1997): 1) ventral tooth of the mandible in lateral view (for large and medium-sized males only) present; 2) anterior margin of the mentum not protruding medially; 3) depressed longitudinal striations on the elytra deeper than in Ceruchus sinensis ; 4) yellow setae on posterior half of the mesofemur in ventral view dense and markedly long; 5) yellow setae on inner apex of the mesotibia long, widely distributed, dense and forming a broad brush; 6) caudal end of the penis noticeably protruding beyond the paramere in natural shape; 7) central split on caudal margin of the basal piece of the aedeagus in ventral view narrow and shallow, forming a small Y-shaped gap, with two sides flat and not protruding; 8) ventral margin of the paramere not forming a sharp corner; 9) endophallus narrow and short, not longer than half of penis; 10) penis in ventral view thin and not swollen in middle; 11) dorsal surface of the penis in lateral view slightly incurved, without wings along the margins.

The female was poorly described and only one important character is readable: the pronotum without a pair of the isolated protuberances outside of the transversal carina. The female paratype of Ceruchus deuvei was subsequently photographed and published by Araya (2002), from which two more characters are identified as follows: 1) anterior angle of the pronotum not an acute angle; 2) flattened marginal area of the pronotum markedly narrower than in Ceruchus minor . These characters can be regarded as the basis of identification for females of Ceruchus deuvei . A female specimen examined by the authors from Miyaluo, Lixian, a locality near the type locality of Ceruchus deuvei , matches the above-mentioned characters.

Distribution ( Fig. 293 ). This species was originally described from the Shuangqiao valley of the Siguniang Mountains (type locality) and Shade, on the west slope of the Gongga Mountains. It was also recorded by the authors from Miyaluo, Lixian. The female paratype of Ceruchus katerinae from Hailuogou (east slope of the Gongga Mountains) is supposed to be Ceruchus deuvei . Boucher & Kral (1997) doubted the Bomans (1994) record of “ Ceruchus sinensis ” from Barkam (Ma-er-kang) as a possible misidentification of Ceruchus deuvei , but this record needs to be confirmed as Ceruchus minor is distributed in the nearby area of southern Gansu.

Figures

FIGURE 227. Female genitalia of Ceruchus deuvei (same specimen as Fig. 268) consisting of sclerotized part in both ventral and dorsal views at top, the last abdominal tergite and ventrite, and the whole female genitalia at bottom. Scale bar 1 mm for all. Abbreviations: mo = median oviduct; ag = accessory gland; sd = spermathecal duct; bc = bursa copulatrix; s = spermatheca; es = entrance of spermatheca; sg = spermathecal gland.

FIGURE 293. Distribution of Ceruchus species in China

FIGURES 210 – 224. Detached structures of females, consisting of mandibles in dorsal view, mentum in ventral view, pronotum in dorsal view, protibia in dorsal view, and mesofemur in ventral view. 210 — Ceruchus lignarius lignarius (same specimen as Fig. 259); 211 — C. luojishanensis (paratype); 212 — C. tabanai (paratype); 213 — C. yangi (same specimen as Fig. 262); 214 — C. yangi (same specimen as Fig. 263); 215 — C. niger (same specimen as Fig. 264); 216 — C. niger (same specimen as Fig. 265); 217 — C. niger (same specimen as Fig. 266); 218 — C. niger (same specimen as Fig. 267); 219 — C. deuvei (same specimen as Fig. 268); 220 — C. minor (same specimen as Fig. 269); 221 — C. minor (same specimen as Fig. 270); 222 — C. minor (specimen not figured elsewhere); 223 — C. sinensis (same specimen as Fig. 272); 224 — C. katerinae (same specimen as Fig. 273). Abbreviations: md = mandibles; me = mentum; p = pronotum; pt = protibia; mf = mesofemur; l = lateral protuberance; n = no central tooth on mola; d = double central teeth on mola; s = single central tooth on mola; t = transversal carina; f = flattened marginal area of the pronotum.

FIGURES 259 – 273. Habitus of female Ceruchus in dorsal view. 259 — Ceruchus lignarius lignarius (Hokkaido, Japan); 260 — Ceruchus luojishanensis (paratype); 261 — Ceruchus tabanai (paratype); 262 — Ceruchus yangi, paratype (Leigongshan, Guizhou); 263 — Ceruchus yangi, paratype (Leigongshan, Guizhou); 264 — Ceruchus niger (Laojunshan, Yunnan); 265 — Ceruchus niger (Yulongxueshan, Yunnan); 266 — Ceruchus niger (Weixi, Yunnan); 267 — Ceruchus niger (Muli, Sichuan); 268 — Ceruchus deuvei (Lixian, Sichuan); 269 — Ceruchus minor (Dabashan, Chongqing); 270 — Ceruchus minor (Diebu, Gansu); 271 — Ceruchus minor (Micangshan, Sichuan); 272 — Ceruchus sinensis (Yaojiaping, Lushui, Yunnan); 273 — Ceruchus katerinae (Hailuogou, Sichuan). Scale bar 5 mm for all.