Draconarius yigongensis Z. Zhao & S. Li, 2019

Li, Bing, Zhao, Zhe, Chen, Haifeng, Wu, Zhiyan & Li, Shuqiang, 2019, Four new species of the genus Draconarius Ovtchinnikov, 1999 (Araneae, Agelenidae) from the Tibetan Plateau, China, Zootaxa 4648 (1), pp. 141-154 : 148-149

Draconarius yigongensis Z. Zhao & S. Li , sp. n.

Figs 5–6 , 8

Type material. Holotype ♂ (IZCAS-Ar39622): Yigong Village (N30.12525º, E95.03213º, 2072 m), Bomi County, Nyingchi City, Tibet, China, 12. VIII. 2014, Y.C. Li leg. Paratypes: 1♀ (IZCAS-Ar39623): same data as holotype ; 1♀ (IZCAS-Ar39624): Yigong Village (N30.26715º, E94.77855º, 2183 m), Bomi County, Nyingchi City, Tibet, China, 13. VIII. 2014, Y.C. Li leg.

Etymology. The specific name refers to the type locality, Yigong Village; adjective.

Diagnosis. Draconarius yigongensis sp. n. is most similar to D. subdissitus Zhu, Wang & Zhang, 2017 . Males of these species can be separated by the length of the patellar apophysis (short, 1/2 width and equal to length of RTA in D. yigongensis sp. n. in Fig. 5C and 3 times longer than RTA in D. subdissitus in fig. 243E in Zhu et al. 2017), the cymbial furrow (about 2/3 cymbial length in D. yigongensis sp. n. in Fig. 5C and 1 /2 cymbial length in D. subdissitus in fig. 243E in Zhu et al. 2017) and the end of the conductor (extending forward in D. yigongensis sp. n. in Fig. 5C but not in D. subdissitus ; see fig. 243E in Zhu et al. 2017). Females of similar species can be separated by the position of the epigyne teeth (originating from the center of the epigyne in D. yigongensis sp. n. in Fig. 6A and nearly the lateral margin of the atrium in D. subdissitus in fig. 243A in Zhu et al. 2017), the shape of the posterior margin of the atrium (nearly rectangular in D. yigongensis sp. n. in Fig. 6A and uplifted centrally in D. subdissitus in fig. 243A in Zhu et al. 2017); and the size of the spermathecal heads (short in D. yigongensis sp. n. in Fig. 6B and long in D. subdissitus in fig. 243B in Zhu et al. 2017).

Description. Male ( IZCAS -Ar39622). Carapace, clypeus, endites, labium, sternum and spinnerets brown, legs and abdomen light-brown. Abdomen with five chevron-shaped patterns. Total length 5.81. Carapace 2.84 long, 1.87 wide. Abdomen 2.97 long, 1.91 wide. Eye sizes and interdistances: AME 0.06, ALE 0.15, PME 0.12, PLE 0.14; AME–AME 0.06, AME–ALE 0.11, AME–PME 0.10, ALE–PLE 0, PME–PME 0.10, PME–PLE 0.06. Leg measurements: I 8.28 (2.34, 2.81, 1.88, 1.25); II 7.11 (2.19, 2.19, 1.56, 1.17); III 6.72 (2.03, 1.88, 1.72, 1.09); IV 8.98 (2.65, 2.66, 2.34, 1.33). Palp: Femur 4.2 times longer than wide. Patellar apophysis almost entirely reduced, RTA small, VTA spine-like, long, about 3 times longer than RTA. Patella with anterodorsal long macrosetae, almost 1.5 times longer than patella, and tibia and base of cymbium with long dorsal and prolateral macrosetae. Cymbium 1.6 times longer than bulb, cymbial furrow long, about 2/3 cymbial length; conductor short, deeply grooved, with large basal lamella and triangular dorsal apophysis; embolus originates at about the 6 o'clock position ( Fig. 5 A–C).

Female ( IZCAS -Ar39623). The colour and the abdominal pattern as the same as the males. Total length 6.33. Carapace 3.12 long, 2.03 wide. Abdomen 3.21 long, 2.19 wide. Eye sizes and interdistances: AME 0.09, ALE 0.14, PME 0.12, PLE 0.15; AME–AME 0.09, AME–ALE 0.13, AME–PME 0.12, ALE–PLE 0, PME–PME 0.16, PME–PLE 0.10. Leg measurements: leg I 7.81 (2.34, 2.51, 1.72, 1.24); II 6.53 (2.10, 2.13, 1.21, 1.09); III 6.41 (2.03, 1.88, 1.48, 1.02); IV 8.15 (2.51, 2.51, 1.88, 1.25). Epigyne: subequal to 2 times wider than long with 2 weak teeth, pointed at end, medially situated and widely separated, atrium small and close to the posterior margin of the epigyne, posterior margin of atrium 4 times wider than long; spermathecae 2 times longer than wide, spermathecal heads originating medially from the spermathecae; fertilization ducts 2 times longer than wide ( Fig. 6 A–B).

Variation. Total length of females 5.87, 6.33 (n=2).

Distribution. Known only from Tibet, China ( Fig. 8 ).

Figures

FIGURE 1. Epigyne and habitus of Draconarius baibaensis sp. n. A Epigyne, ventral B Internal genitalia, dorsal C Female habitus, dorsal D Female habitus, ventral E Female habitus, lateral. Scale bars: equal for A and B, equal for C, D and E.

FIGURE 3. Left male palp of Draconarius linzhiensis. A Prolateral view B Ventral view C Retrolateral view. Scale bar: equal for A, B, C.

FIGURE 5. Left male palp of Draconarius yigongensis sp. n., holotype. A Prolateral view B Ventral view C Retrolateral view. Scale bar: equal for A, B, C.

FIGURE 6. Epigyne and habitus of Draconarius yigongensis sp. n. A Epigyne, ventral B Internal genitalia, dorsal C Male habitus, dorsal D Female habitus, dorsal E Female habitus, ventral. Scale bars: equal for A and B, equal for D and E.

FIGURE 8. Localities of five Draconarius species from China. 1 Draconarius baibaensis sp. n. 2 Draconarius budanlaensis sp. n. 3 Draconarius linzhiensis; T in upper case indicates the type locality of D. linzhiensis 4 Draconarius yigongensis sp. n. 5 Draconarius yingbinensis sp. n.