Sinocranum menghai Chu & Li, 2023
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publication ID |
https://dx.doi.org/10.3897/zookeys.1181.108822 |
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publication LSID |
lsid:zoobank.org:pub:1DF5630C-7459-4525-892B-647A84C2098F |
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persistent identifier |
https://treatment.plazi.org/id/611BECC7-D402-4086-ABA5-19B4B435F878 |
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taxon LSID |
lsid:zoobank.org:act:611BECC7-D402-4086-ABA5-19B4B435F878 |
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treatment provided by |
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scientific name |
Sinocranum menghai Chu & Li |
| status |
sp. nov. |
Sinocranum menghai Chu & Li sp. nov.
Figs 3 View Figure 3 , 4 View Figure 4 , 5 View Figure 5 , 11A View Figure 11
Type material.
Holotype: 1♂ (IZCAS-Ar44618), China, Yunnan, Xishuangbanna, Menghai County, Menghai Town, Man’ao Village Committee, 21°57.620′N, 100°28.261′E, 1176 m, hand catch in leaf litter, November 2022, H. Qiu leg. Paratypes: 2♀ (IZCAS-Ar44619, 44620), same data as holotype.
Etymology.
The specific name refers to the type locality and is a noun in apposition.
Diagnosis.
The new species can be distinguished by the tegular lobe large and curved prolaterally (Fig. 3A-C View Figure 3 ), by the embolus originating retrolaterally, embolic apophysis coiled and thin sheet-shaped (Fig. 3C-F View Figure 3 ), by the conductor strongly sclerotized (Fig. 3A-F View Figure 3 ), by the palp with ventral tibial apophysis, retrolateral tibial apophysis and dorsal tibial apophysis (Fig. 3A-C View Figure 3 ), by the epigynal plate sclerotized, anteriorly to medially with narrow membranous area, laterally with large crescent-shaped sclerites (Fig. 4A View Figure 4 ), by the vulva with glandular appendages, originating subdistally to copulatory ducts (Fig. 4B View Figure 4 ), by the copulatory ducts long and curved, subdistally to distally bifurcate (Fig. 4B View Figure 4 ), and by the fertilization ducts almost as long as diameter of spermathecae, close to each other distally, pointing anteriorly (Fig. 4B View Figure 4 ).
Description.
Male (holotype; Figs 5A, B View Figure 5 , 11A View Figure 11 ). Total body length 7.89, carapace 3.77 long, 2.87 wide, opisthosoma 4.12 long, 2.35 wide. Eye sizes and interdistances: AME 0.16, ALE 0.15, PME 0.14, PLE 0.17; AME-AME 0.13, AME-ALE 0.09, PME-PME 0.27, PME-PLE 0.25, AME-PME 0.20, ALE-PLE 0.16. Carapace reddish-brown with lighter heart region, laterally with dark stripes, submarginally with lighter patches, marginally dark, with white hairs; fovea reddish-brown. Chelicerae reddish-brown, with several setae on anterior surface, with three promarginal and two retromarginal teeth. Endites yellowish-brown, longer than wide, narrower in middle, subapically with semicircular membranous area and dense scopula. Labium reddish-brown with lighter distal lip. Sternum reddish-brown. Legs yellowish-brown, lateral tarsi and metatarsi I-II with dense scopulae. Leg spination: femora I pl 3 do 3 rl 3, II pl 4 do 3 rl 4, III-IV pl 3 do 3 rl 3; tibiae I pl 3 rl 3 plv 3 rlv 3, II-IV pl 3 do 3 rl 3 plv 3 rlv 3; metatarsi I-II pl 1 rl 1 v 2, III-IV pl 4 do 1 rl 4 plv 3 rlv 3. Palp and leg measurements: palp 4.95 (1.55, 0.94, 1.00, -, 1.46), I 12.09 (3.18, 1.70, 2.96, 2.63, 1.62), II 12.02 (3.30, 1.60, 2.89, 2.74, 1.49), III 10.64 (3.01, 1.39, 2.22, 2.75, 1.27), IV 13.79 (3.67, 1.56, 3.08, 3.91, 1.57). Leg formula: 4123. Dorsal opisthosoma yellowish, median field with dark bands, laterally with reddish-brown stripes and dark patches. Lateral and ventral opisthosoma yellowish with dark spots and dark ring around spinnerets. Spinnerets yellowish.
Palp (Fig. 3A-F View Figure 3 ). Tibia with three apophyses; ventral tibial apophysis arc-shaped, weakly sclerotized; retrolateral tibial apophysis wide, with slight retrolateral curvature distally, with blunt and thin sheet-shaped tip; dorsal tibial apophysis straight, spine-shaped, with wide base and narrow tip deviating from the direction of palp. Bulb longer than wide, tegular lobe distinct curved prolaterally. Tegulum membranous antero-laterally, with distinct, U-shaped sperm duct subcentrally; subtegulum strongly sclerotized, clearly visible in ventral view. Embolus originating retrolaterally, long and filiform, connected to conductor; embolic apophysis coiled and thin sheet-shaped; embolus and embolic apophysis almost invisible in ventral view. Conductor strongly sclerotized, originating 10:30-11:30 o’clock. Tegular apophysis originating subdistally to bulb, nearly rectangular.
Female (paratype; Fig. 5C, D View Figure 5 ). Total body length 9.85, carapace 4.31 long, 3.13 wide, opisthosoma 5.54 long, 3.42 wide. Eye sizes and interdistances: AME 0.20, ALE 0.20, PME 0.16, PLE 0.18; AME-AME 0.16, AME-ALE 0.13, PME-PME 0.34, PME-PLE 0.29, AME-PME 0.23, ALE-PLE 0.17. Ocular area with white hairs. Endites reddish-brown. Leg spination: femora I pl 2 do 3 rl 2, II-III pl 3 do 3 rl 3, IV pl 1 do 3 rl 3; tibiae I-II plv 3 rlv 3, III pl 2 rl 2 plv 3 rlv 3, IV pl 3 rl 3 plv 3 rlv 3; metatarsi I-II plv 1 rlv 1, III-IV pl 4 rl 4 plv 3 rlv 3. Palp and leg measurements: palp 3.97 (1.29, 0.74, 0.76, -, 1.18), I 10.32 (2.97, 1.68, 2.51, 1.93, 1.23), II 10.31 (3.06, 1.63, 2.48, 1.99, 1.15), III 9.55 (2.76, 1.43, 2.04, 2.28, 1.04), IV 12.30 (3.34, 1.62, 2.95, 3.20, 1.19). Leg formula: 4123. Other characters same as holotype.
Epigyne (Fig. 4A, B View Figure 4 ). Epigynal field with two large spots. Epigynal plate sclerotized, anteriorly to medially with narrow membranous area, laterally with large crescent-shaped sclerites. Copulatory openings hidden under epigynal plate. Copulatory ducts long and curved, subdistally to distally bifurcate. Glandular appendages globular, originating subdistally to copulatory ducts. Spermathecae large, kidney-shaped, separated by less than half of their diameter. Fertilization ducts almost as long as diameter of spermathecae, close to each other distally, pointing anteriorly.
Variation.
Second paratype female: total body length 10.70, carapace 5.25 long, 3.52 wide, opisthosoma 5.45 long, 3.21 wide.
Distribution.
China (Yunnan, type locality; Fig. 12 View Figure 12 ).
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.