Crassignatha dongnai
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Ordo: Araneae
Familia: Symphytognathidae
Genus: Crassignatha
Name
Crassignatha dongnai Y. Lin & S. Li sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Type material
Holotype ♀ (IZCAS-Ar 40997) and paratype 1♀ (IZCAS-Ar 40998), Vietnam: Dong Nai Province, Cat Tien National Park, Natural Forest (11.45008°N, 107.36438°E; 173 m), 5.IX.2015, Q. Zhao, Y. Li and Z. Chen leg.; 1♀ (NHMSU-HA092) used for sequencing, GenBank: MT992004, same data as for preceding.
Diagnosis
This species is similar to C. gucheng sp. nov. but can be distinguished by the copulatory ducts twisted once in the center of vulva vs. twisted twice in the latter (Fig. 6F, G).
Description
Female (holotype). Total length 1.28. Carapace 0.48 long, 0.40 wide, 0.40 high. Clypeus 0.14 high. Sternum 0.28 long, 0.28 wide. Abdomen 0.84 long, 0.76 wide, 0.80 high. Length of legs: I 1.60 (0.54, 0.18, 0.40, 0.24, 0.24); II 1.30 (0.40, 0.14, 0.32, 0.20, 0.24); III 1.00 (0.26, 0.14, 0.20, 0.16, 0.24); IV 1.20 (0.38, 0.14, 0.28, 0.18, 0.22).
Somatic characters (Fig. 6A–C). Coloration: carapace brown, marginally darker, mouthparts and sternum brown. Legs pale brown. Abdomen pale dorsally and ventrally, black laterally and posteriorly. Prosoma: carapace nearly pear shaped, granular with sulci, with two midline setae on cephalic area. Cephalic area elevated. PER recurved. Clypeus slightly concave. Labium tongue shaped, unfused to sternum. Sternum scutiform, flat, sculptured, truncated posteriorly. Legs: patellae with dorsal seta distally, tibia with two dorsal setae. Abdomen: anteriorly rounded, posteriorly subquadrate, with a pair of posterodorsal tubercles. Spinnerets slightly sclerotized. Epigyne (Fig. 6D–G): epigynal area distinctly sclerotized, bears a few setae. Scape large, finger-like, extended beyond the epigastric furrow. Internal structures faintly visible via the translucent tegument. Spermathecae separated by their diameter. Copulatory ducts long, connected to the dorsal center of spermathecae, curving downwards and going up to the center of vulva, then turning back vertically downward, merged before copulatory opening. Copulatory opening located at scape end. Fertilization ducts starting at inside lower margin of spermathecae, then curved posteriorly and laterally.
Male. Unknown.
Etymology
The specific name is derived from the type locality; noun in apposition.
Distribution
Vietnam (Fig. 38).
Original Description
- Li, Y; Lin, Y; Li, S; 2020: A review of Crassignatha (Araneae, Symphytognathidae) ZooKeys, 988: 63-128. doi
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