Microdipoena gongi (Yin, Peng & Bao, 2004)

Zhang, Qiuqiu & Lin, Yucheng, 2023, Phylogenetic placement of eight poorly known spiders of Microdipoena (Araneae, Mysmenidae), with descriptions of five new species, ZooKeys 1175, pp. 333-373 : 333

Microdipoena gongi (Yin, Peng & Bao, 2004)

Figs 8 , 9

Mysmenella gongi Yin, Peng & Bao, 2004: 80, figs 1-8 (♂♀).

Microdipoena gongi : Lopardo and Hormiga 2015: 783.

Type material.

Holotype ♀ (HNU) and paratypes 1♂ 3♀ (HNU), China: Hunan Province, Daoxian County, Timber Mill (25°31.000'N, 111°33.000'E), 8.IV.1988; 1♀ 7♂, China: Hunan Province, Daoxian County, Shuangqiao Town, 1.VI.1987, L. Gong leg. Examined in 2008.

Other material examined.

1♂ 2♀ (NHMSU-XX53), China: Hunan Province, Changsha City, Yuelu District, Yuelu Mountain scenic spot, leaf litter (28°10.502'N, 112°56.391'E; 121 m elev.), 20.IV.2018, G. Zhou leg.

Diagnosis.

Male of Microdipoena gongi can be distinguished from other congeners except for M. illectrix , M. jobi , M. menglunensis , M. mihindi , M. ogatai , M. papuana , M. pseudojobi , M. samoensis , M. shenyang sp. nov., M. yinae , and M. zhulin sp. nov. by the embolic end twisted into a complex structure (Figs 9A, B , 12D , 16E , 20B , 22A ). It can be distinguished from these aforementioned species by the cymbium wraps the bulb prolaterally or lacking a cymbial tooth (cf. Figs 9A, B , 12B , 16B , 22D ; Lin and Li 2013: CP shown in fig. 21F; Lopardo and Hormiga 2015: CyP shown in fig. 132C-F). Female of Microdipoena gongi differs from other congeners except for M. huisun sp. nov., M. ogatai , and M. yinae in lacking a long, soft, membranous scape, but having a small, weakly sclerotized, small scape (cf. Figs 9F , 10F , 19H , and Ono 2007: figs 69, 70; Figs 13C , 14F , 17C , 18F , 23D and Lopardo and Hormiga 2015: fig. 129E, F), but can be distinguished from these aforementioned species by the horizontal ovate spermathecae, which is almost as large as the posterior sclerotized area of copulatory ducts (globose in M. huisun sp. nov., smaller spermatheca in M. ogatai , inclined hemispheric spermatheca in M. yinae ) (cf. Figs 9F , 10F , 19H and Ono 2007: fig. 70).

Description.

Male: Total length 0.98. Carapace 0.44 long, 0.48 wide, 0.52 high. Clypeus 0.08 high. Sternum 0.30 long, 0.30 wide. Abdomen 0.54 long, 0.56 wide, 0.60 high. Length of legs: I 1.33 (0.48, 0.12, 0.27, 0.22, 0.24); II 1.20 (0.42, 0.12, 0.24, 0.18, 0.24); III 0.81 (0.25, 0.10, 0.16, 0.14, 0.16); IV 1.04 (0.28, 0.12, 0.24, 0.18, 0.22).

Somatic characters

(Fig. 8A-C ). Coloration: carapace dark brown. Ocular base black. Chelicera, endites, labium and sternum dark brown. Legs brown-black. Abdomen dark with three white spots dorsally. Prosoma: carapace nearly round in dorsal view and peak-shaped in lateral view. Cephalic part flat, slightly elevated. Sternum scutiform, slightly plump. Legs: covered with setae. Mating clasper on metatarsus I, two strong spines on tibia I, femur I with sclerotized femoral spot. Abdomen: nearly globose.

Palp (Fig. 9A-C ): The palp 45° inclined to the surface of the tibia. Cymbium translucent, originating prolaterally, with a large cymbial conductor. Paracymbium large, finger-like, with long setae. Tegulum translucent, surface swollen. Embolus thin and relatively short, coiled into one loop over the cymbium, tip with complex structure. Spermatic ducts can be seen through translucent tegulum.

Female. Total length 1.37. Carapace 0.45 long, 0.52 wide, 0.40 high. Clypeus 0.10 high. Sternum 0.38 long, 0.32 wide. Abdomen 0.92 long, 0.88 wide, 0.86 high. Length of legs: I 1.32 (0.34, 0.14, 0.32, 0.28, 0.24); II 1.06 (0.22, 0.12, 0.30, 0.24, 0.18); III 0.82 (0.20, 0.12, 0.20, 0.16, 0.14); IV 0.92 (0.22, 0.12, 0.22, 0.20, 0.16).

Somatic characters

(Fig. 8D-F ). Coloration: carapace nearly black. Ocular base black. Chelicera, endites, labium black, sternum dark brown. Legs brown-black. Abdomen black with four white spots dorsally. Prosoma: carapace nearly round in dorsal view. Cephalic part unraised. Sternum scutiform, slightly plump, covered with sparse setae. Legs: covered with setae and bristles. Femurs I and II with sclerotized femoral spot. Abdomen: nearly spherical, covered with short setae.

Epigyne (Fig. 9D-F ): sclerotized, length twice the width, structure can be seen slightly through the cuticle. Scape nodular shape, very small. Copulatory duct membranous, coiled under the spermathecae. Paired spermathecae transverse oval, separated by nearly double diameter. Fertilization ducts membranous, inconspicuous.

Distribution.

China (Hunan).

Figures

Figure 8. Microdipoena gongi Yin, Peng & Bao, 2004, male (A-C) and female (D-F), from Hunan of China A habitus, dorsal B habitus, ventral C habitus, lateral D habitus, lateral E habitus, dorsal F habitus, ventral. Abbreviations: FS = femoral spot, MC = Metatarsal clasping spine, TS = tibial spine on male leg I. Scale bars: 0.50 mm.

Figure 9. Microdipoena gongi Yin, Peng & Bao, 2004, from Hunan of China A male palp, prolateral B male palp, retrolateral C male palp, apical D epigyne, ventral E vulva, ventral F vulva, dorsal. Abbreviations: CD = copulatory duct, Cy = cymbium, CyC = cymbial conductor, E = embolus, Pa = patella, PC = paracymbium, S = spermathecal, SD = spermatic duct, Sp = Scape, T = tegulum, Ti = tibia. Scale bars: 0.10 mm.

Figure 10. Microdipoena huisun sp. nov., female from Taiwan of China A habitus, dorsal B habitus, ventral C habitus, lateral D epigyne, ventral E vulva, ventral F vulva, dorsal. Abbreviations: CD = copulatory duct, S = spermathecal, Sp = Scape. Scale bars: 0.50 mm (A-C), 0.10 mm (D-F).

Figure 12. Microdipoena jobi Kraus, 1967 from Georgia A bulbus with conductor removed, from behind B cymbium, prolateral C conductor, dorsal D embolic end, retrolateral E male palp, apical F male palp, prolateral G male palp, retrolateral. Abbreviations: CT = cymbial tooth, Cy = cymbium, CyC = cymbial conductor, CyP = cymbial process, E = embolus, Pa = patella, PC = paracymbium, T = tegulum, Ti = tibia. Scale bars: 0.10 mm.

Figure 13. Microdipoena jobi Kraus, 1967 from Georgia A epigyne, ventral B vulva, ventral C vulva, dorsal. Abbreviations: CD = copulatory duct, FD = fertilization duct, S = spermathecal, Sp = Scape. Scale bars: 0.10 mm.

Figure 14. Microdipoena lisu sp. nov., female from Yunnan of China A habitus, dorsal B habitus, ventral C habitus, lateral D epigyne, ventral E vulva, ventral F vulva, dorsal. Abbreviations: CD = copulatory duct, FD = fertilization duct, S = spermathecal, Sp = Scape. Scale bars: 0.50 mm (A-C); 0.10 mm (D-F).

Figure 16. Microdipoena shenyang sp. nov. from Liaoning of China A conductor, dorsal B cymbium, ventral C bulbus with conductor removed, prolateral D bulbus with conductor removed, retrolateral E embolic end, apical-lateral F male palp, prolateral G male palp retrolateral. Abbreviations: CT = cymbial tooth, Cy = cymbium, CyC = cymbial conductor, CyP = cymbial process, E = embolus, Pa = patella, PC = paracymbium, SD = spermatic duct, T = tegulum, Ti = tibia. Scale bars: 0.10 mm (A, B, E-G); 0.20 mm (C, D).

Figure 17. Microdipoena shenyang sp. nov. from Liaoning of China A epigyne, ventral B vulva, ventral C vulva, dorsal. Abbreviations: CD = copulatory duct, FD = fertilization duct, S = spermathecal, Sp = scape. Scale bars: 0.10 mm.

Figure 18. Microdipoena thatitou sp. nov., female from Laos A habitus, dorsal B habitus, ventral C habitus, lateral D epigyne, ventral E vulva, ventral F vulva, dorsal. Abbreviations: CD = copulatory duct, FD = fertilization duct, S = spermathecal, Sp = Scape. Scale bars: 0.50 mm (A-C), 0.10 mm (D-F).

Figure 19. Microdipoena yinae Lin & Li, 2013, from Sichuan of China A male habitus, dorsal B male habitus, ventral C male habitus, lateral D female habitus, dorsal E female habitus, ventral F female habitus, lateral G epigyne, ventral H vulva, dorsal. CD = copulatory duct, FD = fertilization duct, S = spermathecal, Sp = scape. Scale bars: 0.20 mm.

Figure 20. Microdipoena yinae Lin & Li, 2013, from Sichuan of China A male palp, apical B bulbus with conductor removed, dorsolateral C conductor, dorsal D male palp, prolateral E male palp, retrolateral. Abbreviations: Cy = cymbium, CyC = cymbial conductor, CyP = cymbial process, E = embolus, Pa = patella, PC = paracymbium, SD = spermatic duct, T = tegulum, Ti = tibia. Scale bars: 0.10 mm.

Figure 22. Microdipoena zhulin sp. nov. from Guangxi of China A palp, apical B conductor, dorsal C cymbium, apical D cymbium, prolateral E left tibia I and metatarsus I, prolateral F palp, prolateral G palp, ventral H palp, retrolateral. Abbreviations: CT = cymbial tooth, Cy = cymbium, CyC = cymbial conductor, CyP = cymbial process, E = embolus, MC = mating clasper, Pa = patella, PC = paracymbium, T = tegulum, Ti = tibia, TS = tibial spine. Scale bars: 0.10 mm.

Figure 23. Microdipoena zhulin sp. nov. from Guangxi of China A epigyne, ventral B epigyne, lateral C vulva, ventral D vulva, dorsal. Abbreviations: CD = copulatory duct, FD = fertilization duct, S = spermathecal, Sp = scape. Scale bars: 0.10 mm.