Crassignatha gucheng Y. Lin & S. Li, 2020
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publication ID |
https://dx.doi.org/10.3897/zookeys.988.56188 |
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publication LSID |
lsid:zoobank.org:pub:6E64D69B-DD73-4A7E-AE2B-3CD21247A5E3 |
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persistent identifier |
https://treatment.plazi.org/id/0FF6F414-70C7-4404-9352-7AE564CA4971 |
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taxon LSID |
lsid:zoobank.org:act:0FF6F414-70C7-4404-9352-7AE564CA4971 |
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treatment provided by |
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scientific name |
Crassignatha gucheng Y. Lin & S. Li |
| status |
sp. nov. |
Crassignatha gucheng Y. Lin & S. Li sp. nov. Figs 9 View Figure 9 , 10 View Figure 10 , 38 View Figure 38
Type material.
Holotype ♂ (NHMSU Ar 018) and paratypes 2♂ 5♀ (NHMSU Ar 019-025), China: Yunnan Province, Longling County, Longjiang Township, Xiaoheishan Nature Reserve, Gucheng Mountain, in good forest (24.82886°N, 98.75917°E; 2010 m), 22.VIII.2018, Y. Lin et al. leg.; 1♀ (NHMSU-HA132) used for sequencing, GenBank: MT992014, same data as for preceding.
Diagnosis.
The male of C. gucheng sp. nov. is similar to that of C. pianma and C. quanqu but can be distinguished by the narrower embolic base and spine-like cymbial tooth vs. a wider embolic base and spur-like cymbial tooth in the latter two (Fig. 10A View Figure 10 ). The female of C. gucheng sp. nov. differs from that of C. dongnai sp. nov. by the copulatory ducts twisted twice at the center of vulva, only once in the latter (Fig. 10F, G View Figure 10 ).
Description.
Male (holotype). Total length 0.72. Carapace 0.32 long, 0.36 wide, 0.40 high. Clypeus 0.12 high. Sternum 0.24 long, 0.24 wide. Abdomen 0.44 long, 0.44 wide, 0.44 high. Length of legs: I 1.28 (0.38, 0.14, 0.32, 0.20, 0.24); II 0.98 (0.26, 0.14, 0.26, 0.14, 0.18); III 0.78 (0.20, 0.10, 0.16, 0.12, 0.20); IV 0.94 (0.30, 0.12, 0.18, 0.14, 0.20).
Somatic characters (Fig. 9A-C View Figure 9 ). Coloration: carapace pale brown, marginally darker. Mouthparts and sternum pale brown. Legs pale yellow, with faint pigmentation on each segment distally. Abdomen pale dorsally, brown-yellow laterally and ventrally, dark posteriorly. Prosoma: carapace nearly rounded, cephalic area elevated, cervical groove distinct, thoracic area and clypeus sculptured, clypeus concave. ALE protruded, PER recurved. Chelicerae bears setae anteriorly. Labium semicircular. Sternum heart shaped, slightly swollen, surface rough, truncated posteriorly. Legs: with dorsal seta on each patella distally, with two setae on each tibia subproximally. Tibia II with two clasping spurs. Abdomen: anteriorly rounded, posteriorly subquadrate, lateral scutum inconspicuous. Spinnerets slightly sclerotized, lack circular plate.
Palp (Fig. 10A-C View Figure 10 ): relatively large, no less than 1/3 carapace size. A few setae on cymbium distally. Apical cymbial tooth caniniform. Tegulum smooth, broad, globular. Plate-like median apophysis with a distal sclerotized process. Embolic membrane slender, laminar, translucent, arises from base of embolus. Embolus short and rigid, terminus blunt.
Female (one of the paratypes). Total length 1.08. Carapace 0.44 long, 0.40 wide, 0.40 high. Clypeus 0.12 high. Sternum 0.28 long, 0.24 wide. Abdomen 0.72 long, 0.72 wide, 0.84 high. Length of legs: I 1.48 (0.56, 0.16, 0.40, 0.14, 0.22); II 1.20 (0.38, 0.16, 0.34, 0.12, 0.20); III 0.84 (0.28, 0.14, 0.18, 0.10, 0.14); IV 1.1 (0.38, 0.14, 0.28, 0.18, 0.12).
Somatic characters (Fig. 9D-F View Figure 9 ). Coloration: carapace roughly the same as in male. Legs pale brown. Abdomen with black pigmentation laterally, posteriorly, and ventrally. Prosoma: carapace pear shaped, sculptured, cephalic area slightly lower than in male. PER recurved. Mouthparts and sternum as in male. Abdomen: anteriorly rounded and posteriorly subquadrate, surface with weakly sclerotized hairy patches. Spinnerets as in male.
Epigyne (Fig. 10D-G View Figure 10 ): epigynal area distinctly sclerotized, bears a few setae. Scape large, finger-like, protruded, copulatory opening located at its terminus. Internal structures faintly visible via translucent tegument. Spermathecae globose, strongly sclerotized, widely separated by 1.5 × their diameter. Fertilization duct originates at medial posterior margin of spermathecae, extends to posterior margin of epigyne. Copulatory ducts long, connected to dorsal surface of spermathecae, extends below spermathecae toward the vulval center, and forms two return paths, then turns downward to copulatory opening.
Etymology.
The specific name is derived from the type locality; noun in apposition.
Distribution.
China (Yunnan), Vietnam (Fig. 38 View Figure 38 ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.