Gaoligonga taeniata, Lin, Yucheng & Li, Shuqiang, 2014

Lin, Yucheng & Li, Shuqiang, 2014, Mysmenidae (Arachnida, Araneae), a spider family newly recorded from Vietnam, Zootaxa 3826 (1), pp. 169-194 : 178-186

publication ID

https://dx.doi.org/10.11646/zootaxa.3826.1.5

publication LSID

lsid:zoobank.org:pub:BE31D904-A8B4-45C2-A23A-2010CC387099

DOI

https://doi.org/10.5281/zenodo.6136341

persistent identifier

https://treatment.plazi.org/id/03F12725-FFB5-FF83-FF70-6181FCAEFCF2

treatment provided by

Plazi

scientific name

Gaoligonga taeniata
status

new species

Gaoligonga taeniata new species

Figs 8 –14 View FIGURE 8 View FIGURE 9 View FIGURE 10 View FIGURE 11 View FIGURE 12 View FIGURE 13 View FIGURE 14 , 20 View FIGURE 20

Type material: Holotype: male ( IZCAS), VIETNAM: Ninh Binh, Cuc Phuong National Park (20 ° 21.216 ′N, 105 ° 37.025 ′E; Alt.: 436 m), natural forest, by sieving leaf litter, 8 October 2007, D.S. Pham leg. Paratypes: 1 male and 5 females, same data as holotype ( IZCAS); 1 male and 13 females ( IZCAS), Cuc Phuong National Park (20 ° 21.440 ′N, 105 ° 34.210 ′E; Alt.: 409 m), by sieving leaf litter, 5 July 2007; 1 male and 3 females ( IZCAS), Cuc Phuong National Park (20 ° 19.582 ′N, 105 ° 37.375 ′E; Alt.: 295 m), by sieving leaf litter, 17 August 2007; 14 females ( IZCAS), Cuc Phuong National Park (20 ° 20.228 ′N, 105 ° 36.227 ′E; Alt.: 386 m), by sieving leaf litter, 3 March 2008, D.S. Pham leg.

Etymology. The specific epithet is taken from the Latin adjective “ taeniatus ” (taenioid), in reference to the ribbon-like embolus.

Diagnosis. Males of this new species can be distinguished from Gaoligonga changya ( Miller, Griswold & Yin 2009: 48, figs 38 A–E, 39 A–B, 40 A–F, 41 A–B, 43 A–B) and G. zhusun ( Miller, Griswold & Yin 2009: 50, figs 43 D–E, 44 A–E, 45 A–B, 46 A–D, 47 D) by the “S”-shaped cymbium with a serrate distal process (i.e. cymbial process) ( Figs 9 View FIGURE 9 A–B, 10 D, 13 D), the strong, spiral embolus with a tortuous end ( Figs 10 View FIGURE 10 C, 13 A, 13 C) and the presence of 3 distal-prolateral spines on the tibia III ( Fig. 8 View FIGURE 8 B). Females are distinguished by the large, long central knob-shaped scape ( Figs 11 View FIGURE 11 A, 14 A), the clubbed spermathecae ( Figs 11 View FIGURE 11 B, 14 B) and the broad, complicated copulatory ducts ( Figs 11 View FIGURE 11 B, 14 B).

Description. Male (holotype). Somatic characters see Fig 8 View FIGURE 8 A–C. Coloration: Prosoma dark medially, yellow laterally. Sternum yellow medially, grey laterally. Opisthosoma pale yellow, with irregular grey darkish speckles dorsally and ventrally.

Measurements: Total length 0.86. Prosoma 0.33 long, 0.34 wide, 0.40 high. Opisthosoma 0.45 long, 0.41 wide, 0.52 high. Clypeus 0.17 high. Sternum 0.22 long, 0.21 wide. Length of legs [total length (femur + patella + tibia + metatarsus + tarsus)]: I 1.22 (0.39, 0.16, 0.27, 0.20, 0.20); II 1.00 (0.32, 0.13, 0.22, 0.16, 0.17); III 0.71 (0.21, 0.11, 0.13, 0.13, 0.13); IV 0.90 (0.29, 0.12, 0.18, 0.16, 0.15).

Prosoma: Carapace nearly rounded. Cephalic region elevated, with vertical clypeus. Ocular area black. Eight eyes in two rows. AME black, others white. ALE and PLE contiguous. AER procurved, PER straight. Chelicerae brown, small, shorter than endites, a cluster of long setae on frontal surface ( Fig. 8 View FIGURE 8 C), fang furrow with 4 promarginal and 5 retromarginal teeth. Endites with tiny serrula. Sternum heart-shaped, slightly plump. Legs: Femora pale yellow, other segments yellow proximally, grey distally. Leg formula: I-II-IV-III. Leg I with a submesal metatarsal clasping macroseta prolaterally. Patellae I–IV with stiff dorsal seta distally. Tibiae I–IV with a stiff dorsal seta proximally, and 3 prolateral long spines on tibia III distally ( Fig. 8 View FIGURE 8 B). Tibiae I–III with 3 trichobothria, tibia IV with 4 trichobothria. Metatarsi I–IV with a single trichobothrium. Opisthosoma: Globular dorsally. Spinnerets dark, anteriors larger than posteriors. Colulus small, tongue-shaped, black. Pedipalp ( Figs 9 –10 View FIGURE 9 View FIGURE 10 , 12– 13 View FIGURE 12 View FIGURE 13 ): Large, strongly sclerotized. Femur narrow proximally and wide distally, 1.5 x longer than patella ( Fig. 9 View FIGURE 9 A, B). Patella short, with a few setae. Tibia swollen, bowl-shaped, attached with long setae on distal brim prolaterally ( Figs 10 View FIGURE 10 D, 13 D). Cymbium membranous, narrow, nearly “S”-shaped ( Fig. 13 View FIGURE 13 D), attached with long setae mesally, with a semilunar paracymbium, a sclerotized cymbial process basally and a serrate process distally ( Figs 10 View FIGURE 10 D, 13 D). Tegulum smooth, sclerotized ( Figs 10 View FIGURE 10 A, 10 C, 13 A, 13 C). Spermatic duct visible through subtegulum ( Figs 10 View FIGURE 10 B, 13 B). Embolus wide, band-shaped, long ( Fig. 10 View FIGURE 10 A, C), coiling into two loops around tegulum ( Fig. 13 View FIGURE 13 C) and extended to basal cymbium ( Figs 10 View FIGURE 10 A, 13 A), embolic end tortuous downward ( Figs 10 View FIGURE 10 C, 13 C).

Female (paratype). Somatic characters as in Fig. 8 View FIGURE 8 D–F. Coloration: Prosoma dark medially, brown yellow laterally. Sternum yellow medially, grey laterally. Opisthosoma with yellow round spots, with irregular grey darkish pattern.

Measurements: Total length 0.88. Prosoma 0.36 long, 0.36 wide, 0.36 high. Opisthosoma as in male, 0.63 long, 0.58 wide, 0.65 high. Clypeus 0.06 high, distinctly lower than in male. Sternum 0.25 long, 0.24 wide. Length of legs [total length (femur + patella + tibia + metatarsus + tarsus)]: I 1.21 (0.38, 0.16, 0.25, 0.21, 0.21); II 1.05 (0.32, 0.15, 0.22, 0.18, 0.18); III 0.78 (0.23, 0.13, 0.13, 0.14, 0.15); IV 0.94 (0.29, 0.13, 0.19, 0.17, 0.16).

Prosoma: Carapace pyriform. Cephalic part flat. Ocular area black. Eight eyes in two rows, with black bases. AME black, other eyes white. ALE and PLE contiguous. AER procurved, PER recurved. Chelicerae, endites and sternum as in male. Legs: Color, number of trichobothria and setae same as in male, except, tibia III without distal long setae prolaterally. Leg formula: I-II-IV-III. Sclerotized femoral spots absent. Opisthosoma: Globular dorsally. Spinnerets grey, anteriors larger than posteriors. Colulus small, dark. Epigynum ( Figs 11 View FIGURE 11 , 14 View FIGURE 14 ): Large, strongly sclerotized, with a broad, rugose and saccate epigynal plate ( Figs 11 View FIGURE 11 A, 14 A). A translucent, rugose scape originates from the medial epigynum, with sparse long setae ( Figs 11 View FIGURE 11 A, 14 A). Distal end of the scape not beyond the posterior margin of epigynal plate ( Fig. 14 View FIGURE 14 A). Spermathecae short club-shaped, distinctly sclerotized, separated by about their length ( Figs 11 View FIGURE 11 B, 14 B). Fertilization ducts short, thin and curved proximally, extending from the interior corner of spermathecae ( Fig. 14 View FIGURE 14 B). Copulatory ducts swollen, saclike, weakly sclerotized, surrounding the whole spermathecae and the fertilization ducts ( Figs. 11 View FIGURE 11 B, 14 B).

Distribution. Known only from the type locality ( Fig. 20 View FIGURE 20 ).

IZCAS

Institute of Zoology, Chinese Academy of Sciences

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Mysmenidae

Genus

Gaoligonga