Draconarius manus, Wang & Zhang, 2018

Wang, Yan-Chao & Zhang, Zhi-Sheng, 2018, Draconarius manus sp. nov., the third species of D. pseudocoreanus - group from China (Araneae: Agelenidae), Zootaxa 4418 (4), pp. 397-400 : 397-399

Draconarius manus sp. nov. (象鼻龙隙蛛)

Figures 1A–D , 2A–D , 3A–B , 4

Type material. Holotype male: CHINA, Sichuan, Chongzhou, Anzihe Natural Reserve , Shaoyaogou Station , Yanjing Observatory , collected by hand, 30°47.8′ N, 103°12.9′ E, elev. 1634m, 0 2 October 2016, L.Y. Wang, K.Y. Xu & Y.C. Wang leg.; Paratypes: 2 males and 9 females, same data as holotype; 1 male and 1 female, Anzihe Natural Reserve, Maliugou, 30°47.3′ N, 103°13.8′ E, elev. 1494m, 0 3 October 2016, L.Y. Wang, K.Y. Xu & Y.C. Wang leg.

Etymology: The specific name comes from the Latin word ‘ manus ’, meaning elephant trunk, and refers to the shape of the blind ducts of copulatory ducts; noun.

Diagnosis: This new species belongs to the D. pseudocoreaus -group, similar to D. pseudocoreanus Xu & Li, 2008 ( Zhu, Wang & Zhang 2017: 353, figs 220A–E) and D. retrotubularis Zhang, Zhu & Wang, 2017 ( Zhu, Wang & Zhang 2017: 360, figs 227A–B) in having a long patellar apophysis, filiform embolus, extremely elongated cymbial furrow and developed prolateral conductor lamellar of male pedipalps; a pair of small, anterio-laterally located epigynal teeth, strongly convoluted copulatory ducts with blind ducts posteriorly of epigynes, but can be distinguished by the anteriorly elongated patellar apophysis approaching the median part of tibia, distinct RTA, bifurcate end of conductor of male pedipalps ( Figs 1A–B , 2A–B ) and the anteriorly located spermathecal heads of the epigyne ( Figs 1C–D , 2C–D ).

Description: Males total length 9.85–10.73. Male holotype ( Fig. 3A ) total length 10.50: Prosoma 5.41 long, 3.78 wide; opisthosoma 5.09 long, 3.65 wide. Eye sizes and interdistances: AME 0.17, ALE 0.21, PME 0.21, PLE 0.21; AME–AME 0.09, AME–ALE 0.10, PME–PME 0.14, PME–PLE 0.21, ALE–PLE 0.09. MOA 0.58 long, front width 0.42, back width 0.57. Clypeus height 0.20. Chelicerae with 3 promarginal and 2 retromarginal teeth. Leg measurements: I 15.48 (4.10, 5.44, 3.74, 2.20), II 13.52 (3.73, 4.52, 3.22, 2.05), III 11.46 (3.20, 3.67, 2.84, 1.75), IV 14.60 (4.12, 4.67, 4.08, 1.73). Leg formula: 1423.

Pedipalp ( Figs 1A–B , 2A–B ). Patellar apophysis long, extending anteriorly and approaching the mid-part of tibia. RTA large and sheet-like, with blunt tip and its length more than half of length of tibia. Lateral tibial apophysis relatively small, located on the retrolateral surface of tibia sub-apically. Cymbial furrow relatively deep, its length much more than half of cymbium. Embolus slender, filiform, originated proximally. Conductor with developed membranous lamellar prolaterally, a bifurcate end, a ventral process and a strong dorsal apophysis. Median apophysis relatively long and spoon-like.

Females total length 8.15–10.99. One of paratypes ( Fig. 3B ) total length 10.88: Prosoma 5.54 long, 3.54 wide; opisthosoma 5.34 long, 3.21 wide. Eye sizes and interdistances: AME 0.16, ALE 0.24, PME 0.22, PLE 0.27; AME– AME 0.10, AME–ALE 0.11, PME–PME 0.13, PME–PLE 0.26, ALE–PLE 0.09. MOA 0.58 long, front width 0.44, back width 0.56. Clypeus height 0.24. Chelicerae with 3 promarginal and 2 retromarginal teeth. Leg measurements: I 13.04 (3.71, 4.58, 2.93, 1.82), II 11.59 (3.28, 3.89, 2.75, 1.67), III 10.26 (3.04, 3.47, 2.48, 1.27), IV 13.54 (3.44, 4.55, 3.74, 1.81). Leg formula: 4123.

Epigyne ( Figs 1C–D , 2C–D ) with a large and shallow atrium. A pair of epigynal teeth originating from anterior margin of atrium laterally. Copulatory openings located beneath the teeth. Copulatory ducts long, spiraled more than four circles, close to each other anteriorly and two blind ducts present posteriorly, like the nose of an elephant. Spermathecal bases posteriorly located, heads anteriorly located and connected to each other, and stalks thin and long. Fertilization ducts originating from spermathecal bases posteriorly.

Distribution. China (Sichuan) ( Fig. 4 ).

Habitat. The type materials were collected from leaf litters and under stones, in typical microhabitat of most coelotines.

Remarks. Zhu et al. (2017) had erroneously regarded as the blind end of the copulatory ducts as spermathecal heads and on that basis they characterized the D. pseudocoreanus -group as having spermathecal heads that originated posteriorly. However, from this species, we can clearly find that the spermathecal heads are extended anteriorly and those structures in the posterior are in fact the blind endings of the copulatory ducts. Considering the remaining species in this group, the spermathecal heads are anteriorly located and pointed forward in D. retrotubularis but are not seen in D. pseudocoreanus .

Figures

FIGURES 1A–D. Draconarius manus sp. nov., HOLOtype maLe and paratype FemaLe. A. LeFt maLe pedipaLp, ventraL view; B. Same, retrOLateraL view; C. Epigyne, ventraL view; D. Same, dOrsaL view. AbbreviatiOns: At, atrium; CD, cOpuLatOry duct; CDA, cOnductOr dOrsaL apOpHysis; CF, cymbiaL FurrOw; CO, cOnductOr; CO, cOpuLatOry Opening; Em, embOLus; ET, epigynaL tOOtH; FD, FertiLizatiOn duct; LTA, LateraL tibiaL apOpHysis; MA, median apOpHysis; PA, pateLLar apOpHysis; RTA, retrOLateraL tibiaL apOpHysis; SH, spermatHecaLHead; Sp, spermatHecae.

FIGURES 2A–D. Draconarius manus sp. nov., HOLOtype maLe and paratype FemaLe. A. LeFt maLe pedipaLp, ventraL view; B. Same, retrOLateraL view; C. Epigyne, ventraL view; D. Same, dOrsaL view.

FIGURES 3A–D. Draconarius manus sp. nov., Habitus OF HOLOtype maLe (A) and paratype FemaLe (B).

FIGURE 4. DistributiOn OF Draconarius pseudocoreanus-grOup in CHina.