Ischnothyreus sijiae Tong & Li, 2021
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publication ID |
https://dx.doi.org/10.3897/zookeys.1034.63388 |
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publication LSID |
lsid:zoobank.org:pub:B9316600-4BE6-4587-9BB1-24B575FD405B |
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persistent identifier |
https://treatment.plazi.org/id/CD66D79E-1F25-4A40-8BF7-F1172AA82CDE |
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taxon LSID |
lsid:zoobank.org:act:CD66D79E-1F25-4A40-8BF7-F1172AA82CDE |
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treatment provided by |
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scientific name |
Ischnothyreus sijiae Tong & Li |
| status |
sp. nov. |
Ischnothyreus sijiae Tong & Li sp. nov. Figures 16 View Figure 16 , 24A, B View Figure 24
Type material.
Holotype ♀: China, Yunnan, Xishuangbanna Tropical Garden; 21°54.999'N, 101°16.237'E; 561 m; 24.IV.2019; Y. Tong and J. Liu leg. (SYNU-426). Paratype. 1♀: same data as for holotype (SYNU-427).
Diagnosis.
The new species is similar to I. tadfane Tong & Li, 2013 in the large dorsal scutum of the abdomen, but can be distinguished by the greater short winding tube of the endogyne (Fig. 24B View Figure 24 ) (vs long winding tube; Tong and Li 2013: fig. 4I, K) and the nipple-shaped atrium (Fig. 24A View Figure 24 ) (vs inverted bell shaped atrium; Tong and Li 2013: fig. 4H, J).
Description.
Female (holotype). Body: habitus as in Fig. 16A-C View Figure 16 ; body length 1.49. Carapace: 0.68 long, 0.54 wide; yellow-brown, without any pattern, surface finely reticulate, lateral margin straight, smooth (Fig. 16D, E View Figure 16 ). Clypeus: height about 0.8 times ALE diameter (Fig. 16G View Figure 16 ). Eyes: see Fig. 16D, G View Figure 16 . Sternum: pale orange (Fig. 16F View Figure 16 ). Mouthparts: chelicerae, endites and labium orange; chelicerae straight, base of fangs unmodified (Fig. 16G View Figure 16 ); endites unmodified (Fig. 16F View Figure 16 ). Abdomen: 0.86 long, 0.53 wide; dorsal scutum well sclerotized, brown, covering 2/3 of the abdomen width and approximately 4/5 of the abdomen length, not fused to epigastric scutum; epigastric and postgastric scutum well sclerotized, pale orange, unfused (Fig. 16A-C View Figure 16 ). Legs: pale orange, femur I with 2 prolateral spines, tibia I with 4 pairs, metatarsus I with 2 pairs of long ventral spines. Leg II spination similar to leg I except femur with only 1 prolateral spine. Legs III and IV spineless. Epigastric area: surface without external features (Fig. 16H View Figure 16 ). Endogyne: from the middle of the slightly thickened margin of the postgastric scutum runs a dark, simple winding tube, ending in a small nipple-shaped atrium (Fig. 24A, B View Figure 24 ).
Male. Unknown.
Etymology.
The species is named after Miss Sijia Liu, one of the collectors of the holotype.
Comment.
Among the known species of the genus Ischnothyreus of China, I. qianlongae Tong & Li, 2008 and I. tergemintus Liu, Xu & Henrard, 2019 are known only from males. I. sijiae sp. nov. can be distinguished from I. tergemintus by the brown colour on the abdomen and sides of carapace (vs yellow abdomen and carapace in I. tergemintus ; Liu et al. 2019: fig. 1A); and from I. qianlongae by the smaller size of the eyes (compare Fig. 16D View Figure 16 with Tong and Li (2008: fig. 4A)).
Distribution.
Known only from the type locality.
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.