Epanerchodus martensi sp. nov.

Figs 12–15

Material examined: Holotype male (SMF), China, Shaanxi Prov., Taibaishan Mts, S slopes, above Houzhenzi, secondary broadleaved forest, 1300–1700 m a.s.l., 107°50’E, 33°51’N, 19.06.1997, leg. J. Martens & P. Jäger. Paratypes: 1 female, 1 incomplete female (SMF), same locality, together with holotype; 1 female (SMF), same locality and habitat, 1300–1700 m a.s.l., 20.06.1997, leg. J. Martens & P. Jäger; 6 females, 1 subadult female (SMF), same locality and habitat, 1300–1700 m a.s.l., 0 8.07.1997, leg. J. Martens & P. Jäger; 2 females, 2 juveniles (SMF), same locality, mixed broadleaved forest, 1700–2000 m a.s.l., 29.06.1997, leg. P. Jäger and B. & J. Martens.

Name: Honours Dr. Jochen Martens, one of the main collectors.

Diagnosis: Differs from congeners by the large size, coupled with the lack of sphaerotrichomes, the slender male prefemora, and the presence of a spiniform exomere. See also Key below.

Description: Length of holotype ca 26 mm, of female paratypes 27–38 mm; width of pro- and metazona in holotype 2.0 and 3.7 mm, respectively, in female paratypes 2.3–2.4 and 3.9–4.0 mm, respectively. Coloration in alcohol rather uniformly grey-brown (Fig. 12), but sometimes infuscate grey-brown with reddish lateral margins of paraterga.

All other characters like in E. jaegeri sp. nov., except as follows.

Antennae long and only slightly clavate due to moderately high antennomere 6 (Fig. 12), slightly overreaching segment 4 or 3 dorsally in male and female, respectively; antennomere 3 longest, only ca 1.1 longer than 5th and 1.2 times longer than subequal antennomeres 4 and 6.

In width, head <collum <segments 2 = 3 <4 <5 <6=16, thereafter body gradually tapering towards telson (Fig. 12). Paraterga especially broad and strongly developed, very much like in E. jaegeri sp. nov., but dorsum nearly flat, in male subhorizontal, in female a little declivous; metatergal bosses very flat, outlined by evident, but shallow sulci (Fig. 12). Epiproct rather short, conical, pre-apical lateral papillae evident. Hypoproct subtrapeziform, caudal, paramedian, setiferous papillae small and well-separated spines.

Sterna without modifications, densely setose. Legs generally long and slender, male prefemora not bulging laterad, like coxae and femora beset ventrally with bi- or trifid setae, but sphaerotrichomes absent (Fig. 14). Gonopods (Figs 13 & 15) much like in E. potanini (Fig. 6), but process p1 digitiform and truncate. Remarks. This species seems to be among the largest congeners in China.