Tangguoa laibin Yao & Li, 2021
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publication ID |
https://doi.org/ 10.11646/zootaxa.4938.1.7 |
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publication LSID |
lsid:zoobank.org:pub:8450237F-B985-4FEE-82FC-93B06FC635D1 |
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DOI |
https://doi.org/10.5281/zenodo.4561491 |
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persistent identifier |
https://treatment.plazi.org/id/03B08797-FFC5-FFED-2583-FB5FFCABFC5D |
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treatment provided by |
Plazi |
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scientific name |
Tangguoa laibin Yao & Li |
| status |
sp. nov. |
Tangguoa laibin Yao & Li View in CoL sp. nov.
Figs 2–3 View FIGURE 2 View FIGURE 3
Type material. Holotype: male (IZCAS-Ar41631), Longnü Cave (24°8.038′N, 109°57.596′E, elevation 143 m), Longnü Mountain , Dale Town , Xiangzhou County, Laibin, Guangxi, China, 17 August 2009, Z. Yao and C. Wang leg. GoogleMaps Paratypes: 6 males (IZCAS-Ar41632–41637) and 5 females (IZCAS-Ar41638–41642), same data as holotype GoogleMaps .
Etymology. The specific name refers to the type locality and is a noun in apposition.
Diagnosis. This species can be easily distinguished from T. tongguling sp. nov. by procursus without sclerotized, narrow and curved ventral apophysis ( Fig. 2C View FIGURE 2 ; present in T. tongguling sp. nov., arrow 2 in Fig. 4C View FIGURE 4 ), with angular dorsal apophysis (arrow 3 in Fig. 2C View FIGURE 2 ; wide, sclerotized dorsal apophysis with scales in T. tongguling sp. nov., arrow 4 in Fig. 4C View FIGURE 4 ) and two retrolateral processes (arrows in Fig. 2D View FIGURE 2 ; retrolateral apophysis with scales and pointed sclerite in T. tongguling sp. nov., arrow 5 in Fig. 4C View FIGURE 4 ), by male chelicerae without frontal apophyses ( Fig. 3C View FIGURE 3 ; presence of frontal apophyses with scales in T. tongguling sp. nov., arrow in Fig. 5C View FIGURE 5 ), by external female genitalia without postero-lateral apophyses ( Fig. 3A View FIGURE 3 ; presence of two postero-lateral apophyses in T. tongguling sp. nov., arrows 1–2 in Fig. 5A View FIGURE 5 ), by vulva with anteriorly wide and posteriorly sharply pointed pore plates ( Fig. 3B View FIGURE 3 ; anteriorly wide and posteriorly narrow and blunt in T. tongguling sp. nov., Fig. 5B View FIGURE 5 ), and by opisthosoma with posterior marks ( Figs 3 View FIGURE 3 E–H; dorsal and lateral spots in T. tongguling sp. nov., Figs 5 View FIGURE 5 E–H).
Description. Male (holotype): Total length 2.84 (3.03 with clypeus), carapace 1.10 long, 1.26 wide, opisthosoma 1.74 long, 1.20 wide. Leg I: 27.85 (7.25 + 0.55 + 7.30 + 9.78 + 2.97), leg II: 19.70 (5.43 + 0.53 + 4.95 + 6.95 + 1.84), leg III: 15.38 (4.48 + 0.47 + 3.84 + 5.25 + 1.34), leg IV: 15.33 (4.47 + 0.47 + 3.80 + 5.28 + 1.31); tibia I L/d: 52. Distance PME-PME 0.16, diameter PME 0.10, distance PME-ALE 0.03, AME absent. Sternum wider than long (0.94/0.76). Habitus as in Figs 3 View FIGURE 3 E–F. Carapace yellowish, with brownish radiating marks and narrow, dark median line; ocular area brownish; clypeus yellowish, with brownish lateral marks; sternum brown. Legs brownish, but slightly whitish on distal parts of femora and tibiae, with distinct darker rings on subdistal parts of femora and tibiae. Opisthosoma yellowish, with large, brown posterior marks. Ocular area slightly elevated and separated from rest of carapace. Thoracic furrow shallow, but distinct. Chelicerae ( Figs 3 View FIGURE 3 C–D) with pair of proximo-lateral apophyses (arrow pa in Figs 3 View FIGURE 3 C–D) with lateral apophyses and scales (arrow in Figs 3 View FIGURE 3 C–D) and pair of distal apophyses with row of teeth each (arrow da in Figs 3 View FIGURE 3 C–D). Pedipalps as in Figs 2 View FIGURE 2 A–B; trochanter with retrolateral apophysis and ventral apophysis; femur strongly curved dorsally, with retrolateral apophysis; patella large; procursus simple proximally but complex distally, with sclerotized prolatero-ventral apophysis (arrow 1 in Fig. 2C View FIGURE 2 ), sclerotized distal apophysis (arrow 2 in Fig. 2C View FIGURE 2 ), angular dorsal apophysis (arrow 3 in Fig. 2C View FIGURE 2 ), and two retrolateral processes (arrows in Fig. 2D View FIGURE 2 ); bulb simple, without other projections except for embolus. Retrolateral trichobothrium of tibia I at 10% proximally; legs with short vertical setae on tibiae, metatarsi and tarsi, without spines or curved setae; tarsus I with 16 distinct pseudosegments.
Female: Similar to male, habitus as in Figs 3 View FIGURE 3 G–H. Total length 3.44 (3.64 with clypeus), carapace 0.96 long, 1.16 wide, opisthosoma 2.48 long, 1.84 wide; tibia I: 6.76; tibia I L/d: 56. Distance PME-PME 0.15, diameter PME 0.11, distance PME-ALE 0.03, AME absent. Sternum wider than long (0.94/0.75). Carapace with brown margins. External female genitalia ( Fig. 3A View FIGURE 3 ) brown, with nearly angular postero-median apophysis (arrow ma in Fig. 3A View FIGURE 3 ) provided with pointed tip, without pockets. Vulva ( Fig. 3B View FIGURE 3 ) with curved anterior arch and pair of anteriorly wide and posteriorly sharply pointed pore plates.
Variation: Tibia I in male paratypes (n = 6): 6.92–7.60 (mean: 7.28). Tibia I in the other female paratypes (n = 2, leg I missing in the other two specimens): 6.56, 6.94.
Natural history. The species was found on the wall in the twilight zone (entrance ecotone) of the Longnü Cave (karst area).
Distribution. China (Guangxi, type locality; Fig. 1 View FIGURE 1 ).
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.