Araneus colubrinus Song & Zhu, 1992
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publication ID |
https://dx.doi.org/10.3897/zookeys.1173.106315 |
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publication LSID |
lsid:zoobank.org:pub:B0A11BAC-B9DA-4DC2-9BC5-F50CE6268CA0 |
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persistent identifier |
https://treatment.plazi.org/id/1A0F90CA-DC14-5024-B2D0-9801A573846A |
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treatment provided by |
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scientific name |
Araneus colubrinus Song & Zhu, 1992 |
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Araneus colubrinus Song & Zhu, 1992 View in CoL
Figs 3 View Figure 3 , 4 View Figure 4 , 15E-H View Figure 15 , 17 View Figure 17
Araneus colubrinus Song & Zhu, 1992: 169, fig. 4A, B; Song and Li 1997: 413, fig. 16A, B; Yin et al. 1997: 146, fig. 61a-c; Song et al. 1999: 238, fig. 136S, T (type material not examined).
Araneus octodentalis Song & Zhu, 1992: 169, fig. 5A, B; Song and Li 1997: 414, fig. 17A, B; Yin et al. 1997: 149, fig. 64a-c; Song et al. 1999: 240, fig. 144A, B (syn. nov., type material not examined).
Material examined.
4♂ 5♀ (TRU- Araneidae -182-190), China: Guizhou Province, Tongren City, Yinjiang Tujia and Miao Autonomous County, Ziwei Township , Dayuanzhi Village , Huguosi (27°54.54'N, 108°46.57'E, ca 1660 m), 9.V.2020, X.Q. Mi et al. leg GoogleMaps .
Diagnosis.
This species resembles A. yangchuandongi sp. nov., A. conexus Liu, Irfan, Yang & Peng, 2019, and A. zhoui Mi & Wang, 2023 in somatic morphology, but it can be distinguished from A. yangchuandongi sp. nov. in: 1) carapace lacking macrosetae anterior to fovea (Fig. 3E, H View Figure 3 ) vs having ten macrosetae (Fig. 11E, G View Figure 11 ); 2) epigyne scape twisted into an S-shape (Fig. 3A View Figure 3 ) vs almost straight (Fig. 11A, B View Figure 11 ); 3) spermathecae oval (Fig. 3D View Figure 3 ) vs spherical (Fig. 11D View Figure 11 ); 4) spermathecae separated by ~ 1.6 × of the spermathecae width (Fig. 3D View Figure 3 ) vs nearly touching each other (Fig. 11D View Figure 11 ); 5) terminal apophysis membranous (Fig. 4A-E View Figure 4 ) vs pointed and heavily sclerotized (Fig. 12A-E View Figure 12 ); 6) conductor ~ 3.6 × longer than wide in retrolateral view (Fig. 4B View Figure 4 ) vs about equal length to width (Fig. 12B View Figure 12 ); and 7) embolus threadlike (Fig. 4A-E View Figure 4 ) vs tapered (Fig. 12C, D View Figure 12 ). It differs A. conexus in: 1) the epigyne scape extremely twisted into an S-shape (Fig. 3A View Figure 3 ) vs almost straight ( Liu et al. 2019: fig. 4A, B); 2) spermathecae separated by ~ 1.6 × of the spermathecae width (Fig. 3D View Figure 3 ) vs nearly touching each other ( Liu et al. 2019: fig. 4C, D); 3) terminal apophysis membranous (Fig. 4A-E View Figure 4 ) vs pointed ( Liu et al. 2019: figs 2A, B, D, E, 3, 5C); 4) subterminal apophysis with two spurs (Fig. 4A, C View Figure 4 ) vs lacking spurs ( Liu et al. 2019: figs 2A, D, 3A-D, 5C); 5) embolus threadlike (Fig. 4A-E View Figure 4 ) vs tapered ( Liu et al. 2019: figs 2A, D, 3A-D, 5C); and 6) conductor ~3.6 × longer than wide in retrolateral view (Fig. 4B View Figure 4 ) vs slightly wider than long ( Liu et al. 2019: figs 2A, B, D, E, 3A, B, 5C). It differs from A. zhoui in: 1) female carapace lacking short spines anterior to fovea (Fig. 3E, H View Figure 3 ) vs with two short spines ( Wu et al. 2023: fig. 7H); 2) epigyne scape extremely twisted into an S-shape (Fig. 3A View Figure 3 ) vs slightly twisted ( Wu et al. 2023: fig. 7A, B); 3) spermathecae separated by ~ 1.6 × of the spermathecae width (Fig. 3D View Figure 3 ) vs nearly touching each other ( Wu et al. 2023: fig. 7D); 4) conductor ~ 3.6 × longer than wide in retrolateral view (Fig. 4B View Figure 4 ) vs slightly wider than long ( Wu et al. 2023: fig. 8C); 5) embolus threadlike (Fig. 4A-E View Figure 4 ) vs tapered ( Wu et al. 2023: fig. 8A, E); and 6) subterminal apophysis having two spurs (Fig. 4A, C View Figure 4 ) vs lacking ( Wu et al. 2023: fig. 8A, E).
Description.
Male (TRU- Araneidae -182, Figs 3H, I View Figure 3 , 4 View Figure 4 , 15E-H View Figure 15 ). Total length 3.85. Carapace 2.05 long, 1.80 wide. Abdomen 2.40 long, 1.75 wide. Clypeus 0.08 high. Eye sizes and interdistances: AME 0.09, ALE 0.08, PME 0.10, PLE 0.08, AME-AME 0.18, AME-ALE 0.25, PME-PME 0.15, PME-PLE 0.38, MOA length 0.30, anterior width 0.30, posterior width 0.35. Leg measurements: I 7.35 (2.20, 2.50, 1.90, 0.75), II 6.45 (1.95, 2.20, 1.60, 0.70), III 3.85 (1.30, 1.25, 0.80, 0.50), IV 5.55 (1.80, 1.80, 1.35, 0.60). Carapace pear-shaped, yellowish brown with dark setae, cervical groove slightly obvious, fovea depressed. Chelicerae yellow, four promarginal teeth and three retromarginal teeth. Endites square, yellow, with tooth-like process laterally, labium triangular, grayish yellow, both with pale tip. Sternum cordiform, grayish yellow with dark setae. Legs yellow to yellowish brown, without annuli, tibia I with 13 macrosetae, distally with constriction (see arrow in Fig. 15E View Figure 15 ), tibia II with 12 macrosetae, tibia III with nine macrosetae, tibia IV with 11 macrosetae. Abdomen oval, blunt anteriorly, ~ 1.37 × longer than wide, covered with dense setae, dorsum grayish yellow with three pairs of dark lateral patches posteriorly; venter grayish yellow with pair of longitudinal yellow patches laterally. Spinnerets yellowish brown.
Pedipalp (Fig. 4 View Figure 4 ): with basal femoral protrusion; patella with two bristles; median apophysis large, with a pointed tip and ten teeth; embolus slender, longer than conductor; conductor membranous ~ 3.6 × longer than wide in retrolateral view, with a spur at base; terminal apophysis membranous, approximately equal in length to conductor; subterminal apophysis heavily sclerotized, with two spurs.
Female (TRU- Araneidae -183, Fig. 3A-G View Figure 3 ). Total length 4.75. Carapace 1.90 long, 1.60 wide. Abdomen 3.75 long, 3.20 wide. Clypeus 0.05 high. Eye sizes and interdistances: AME 0.09, ALE 0.08, PME 0.11, PLE 0.08, AME-AME 0.15, AME-ALE 0.10, PME-PME 0.15, PME-PLE 0.38, MOA length 0.30, anterior width 0.28, posterior width 0.35. Leg measurements: I 6.25 (1.95, 2.25, 1.40, 0.65), II 5.45 (1.70, 1.95, 1.20, 0.60), III 3.50 (1.20, 1.10, 0.70, 0.50), IV 5.00 (1.60, 1.75, 1.10, 0.55). Habitus similar to that of male but anterior abdominal elevation more obvious; chelicerae, endites, labium, and sternum darker, and abdominal patches much paler.
Epigyne (Fig. 3A-D View Figure 3 ): ~ 1.69 × wider than long at base; scape twisted into an S-shape, distally spoon shaped; copulatory openings strongly concave, on ventral surface; copulatory ducts extremely long, middle part twisted into a U-shape; spermathecae oval, ~ 1.6 × of the spermathecae width apart.
Variation.
Total length: ♂♂ 3.65-3.85 (n = 4); ♀♀ 4.65-5.20 (n = 5).
Distribution.
Hubei, Guizhou.
Justification of the synonymy.
The holotypes of Araneus colubrinus (only known from a single female) and Araneus octodentalis (only known from a single male) were not examined, but both species can be easily recognized due to the perfect illustrations ( Song and Zhu 1992). Although the anterior abdominal elevation of female more obvious than that of male, but both sexes have the same color pattern on dorsal abdomen, the same dimorphism that also exists in some related species, such as A. conexus , A. zhoui , and A. yangchuandongi sp. nov. Moreover, both the holotypes of A. colubrinus and A. octodentalis were collected on the same day in Wuling Mountains (Badong County, Hubei Province). Hence we propose that Araneus colubrinus Song & Zhu, 1992 is a senior synonym of Araneus octodentalis Song & Zhu, 1992.
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.
