TABLE 1 in Dorcus liyuani Qi & Zhan, a new stag beetle from Gansu, China (Coleoptera: Lucanidae: Lucaninae)

TABLE 1. Main distinguishing characters in large males of Dorcus liyuani Qi & Zhan, new species, and the related species. male characterD. liyuani new speciesD. tianlongiD. liyingbingimandiblewith a relatively protruding rounded protuberance behind the apex (Fig. 4A); inner tooth present near middlewith a slightly protruding widely rounded protuberance behind the apex (Fig. 4C); inner tooth present near middlealmost without protuberance behind the apex (Fig. 4E); inner tooth present near basal 1/3surface of elytrapunctures relatively tiny (Fig. 4B)punctures relatively moderate (Fig. 4D)punctures relatively large (Fig. 4F)abdominal ventrite VIIIwithout membranous area at middle of basal part (Figs. 5B, F)with transverse membranous area at middle of basal part (Fig. 5J)with transverse membranous area at middle of basal part (Fig. 5N)abdominal segment IXwith a pair of lateral plates relatively broad (Figs. 5C, G); ventral plate obviously contracted near the half length (Figs. 5D, H)with a pair of lateral plates relatively narrow (Fig. 5K); ventral plate not contracted near the half length (Fig. 5L)with a pair of lateral plates relatively narrow (Fig. 5O); ventral plate not contracted near the half length (Fig. 5P)aedeaguspenis relatively narrow (Figs. 7A, E); paramere strongly upturned, with apex sharp in lateral view (Figs. 7C, G); lateral sides of basal piece cambered outwards, moderately constricted in basal part, with a pair of well-developed sclerotized dorsal plates, widest at basal edge (Figs. 7B, F)penis relatively wide (Fig. 7I); paramere moderately upturned, with apex rounded in lateral view (Fig. 7K); lateral sides of basal piece subparallel, strongly constricted in basal part, with a pair of well-developed sclerotized dorsal plates, widest at apical edge (Fig. 7J)penis relatively wide (Fig. 7M); paramere moderately upturned, with apex rounded in lateral view (Fig. 7O); lateral sides of basal piece subparallel, strongly constricted in basal part, with a pair of well-developed sclerotized dorsal plates, widest at apical edge (Fig. 7N)flagellumrelatively long and slender, more than 3.0 times the length of the aedeagus, with lateral branches very short (Figs. 6A– B), apex of flagellum shown in Figs. 7D, Hrelatively short and wider, less than 3.0 times the length of the aedeagus, with lateral branches relatively long (Fig. 6C), apex of flagellum shown in Fig. 7Lrelatively short and wider, less than 3.0 times the length of the aedeagus, with lateral branches relatively long (Fig. 6D), apex of flagellum shown in Fig. 7P