Two new species and one new record of Ischnothyreus Simon, 1893 (Araneae, Oonopidae) from China Author Song, Chenxue Life Science College, Shenyang Normal University, Shenyang 110034, China Author Tong, Yanfeng https://orcid.org/0000-0002-4348-7029 Life Science College, Shenyang Normal University, Shenyang 110034, China tyf68@hotmail.com Author Bian, Dongju Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China biandongju@163.com Author Zhang, Zhisheng https://orcid.org/0000-0002-9304-1789 Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China zhangzs327@qq.com text Biodiversity Data Journal 2024 2024-04-11 12 122100 122100 http://dx.doi.org/10.3897/BDJ.12.e122100 journal article http://dx.doi.org/10.3897/BDJ.12.e122100 1314-2828-12-e122100 1E1758DCBDF94A18A23473AB69A84ACE E308981F7173558EA20213A046EF380C Ischnothyreus daheling Tong & Zhang sp. nov. Materials Type status: Holotype . Occurrence : recordNumber: SYNU-707; recordedBy: Zongxu Li , Luyu Wang ; individualCount: 1 ; sex: male ; lifeStage: adult ; occurrenceID: A9E7AAC7-43DA-5861-B070-AA367E644B62 ; Taxon : scientificName: Ischnothyreus daheling; order: Araneae ; family: Oonopidae ; genus: Ischnothyreus ; Location : country: China ; stateProvince: Yunnan ; county: Baoshan City , Tengchong County ; locality: JietouTown , Datou Village , Dahelingganjiao ; Identification : identifiedBy: Yanfeng Tong ; Event : samplingProtocol: sifting leaf litter ; eventDate: 23/02/ 2011 Type status: Paratype . Occurrence : recordNumber: SYNU-708-710; recordedBy: Zongxu Li , Luyu Wang ; individualCount: 3 ; sex: female ; lifeStage: adult ; occurrenceID: 0FD72221-D529-5328-9438-36EDCECCEE10 ; Taxon : scientificName: Ischnothyreus daheling; order: Araneae ; family: Oonopidae ; genus: Ischnothyreus ; Location : country: China ; stateProvince: Yunnan ; county: Baoshan City , Tengchong County ; locality: JietouTown , Datou Village , Dahelingganjiao ; Identification : identifiedBy: Yanfeng Tong ; Event : samplingProtocol: sifting leaf litter ; eventDate: 23/02/ 2011 Type status: Paratype . Occurrence : recordNumber: SYNU-711-714; recordedBy: Zongxu Li , Luyu Wang ; individualCount: 4 ; sex: female ; lifeStage: adult ; occurrenceID: A39B8642-53DA-5493-82BD-1968E6544502 ; Taxon : scientificName: Ischnothyreus daheling; order: Araneae ; family: Oonopidae ; genus: Ischnothyreus ; Location : country: China ; stateProvince: Yunnan ; county: Baoshan City , Tengchong County ; locality: Jietou Town , Datang Village ; Identification : identifiedBy: Yanfeng Tong ; Event : samplingProtocol: sifting leaf litter ; eventDate: 21/02/ 2011 Type status: Paratype . Occurrence : recordNumber: SYNU-715-717; recordedBy: Zongxu Li , Luyu Wang ; individualCount: 3 ; sex: female ; lifeStage: adult ; occurrenceID: F489D23E-11EB-5FC1-ACD9-A3F0EBA8AB8B ; Taxon : scientificName: Ischnothyreus daheling; order: Araneae ; family: Oonopidae ; genus: Ischnothyreus ; Location : country: China ; stateProvince: Yunnan ; county: Baoshan City , Tengchong County ; locality: Wuhe Town , Xiaodifang Village ; Identification : identifiedBy: Yanfeng Tong ; Event : samplingProtocol: sifting leaf litter ; eventDate: 27/02/ 2011 Type status: Paratype . Occurrence : recordNumber: SYNU-718; recordedBy: Zongxu Li , Luyu Wang ; individualCount: 1 ; sex: female ; lifeStage: adult ; occurrenceID: 6DFAC351-F3D7-5037-8495-2316D4E4E770 ; Taxon : scientificName: Ischnothyreus daheling; order: Araneae ; family: Oonopidae ; genus: Ischnothyreus ; Location : country: China ; stateProvince: Yunnan ; county: Baoshan City , Tengchong County ; locality: Jietou Town , Sabadi ; Identification : identifiedBy: Yanfeng Tong ; Event : samplingProtocol: sifting leaf litter ; eventDate: 25/05/ 2011 Type status: Paratype . Occurrence : recordNumber: SYNU-719; recordedBy: Ping Feng ; individualCount: 1 ; sex: female ; lifeStage: adult ; occurrenceID: AC048212-9E5A-59B5-8D18-EFB379F11EDE ; Taxon : scientificName: Ischnothyreus daheling; order: Araneae ; family: Oonopidae ; genus: Ischnothyreus ; Location : country: China ; stateProvince: Yunnan ; locality: Gaoligong Mountain , Nankang Protection Station ; Identification : identifiedBy: Yanfeng Tong ; Event : eventDate: 20/04/2011 Description Male (Holotype). Body : habitus as in Fig. 1 A-C; body length 1.64. Carapace : 0.88 long, 0.65 wide; yellow, oval in dorsal view, pars cephalica strongly elevated in lateral view, sur-face of elevated portion of pars cephalica reticulate, sides finely reticulate, lateral margin straight, smooth (Fig. 1 C). Clypeus : straight in frontal view, ALE separated from edge of carapace by 1.5 times of their diameter (Fig. 1 F). Eyes : ALE largest, ALE circular, PME circular, PLE oval; posterior eye row recurved from above; ALE separated by less than their radius, ALE and PLE touching. Sternum : as long as wide, pale orange (Fig. 1 E). Mouthparts : chelicerae, endites and labium yellow; chelicerae straight, base of fangs with flag-like process, fang groove with a few small and one larger denticles (Fig. 2 J-L); an-teromedian tip of endites with one strong, tooth-like projection (Fig. 1 G). Abdomen : 0.76 long, 0.44 wide; dorsal scutum well sclerotised, dark brown, covering 4/5 of the abdomen width and approximately 5/6 of the abdomen length, not fused to epigastric scutum; epigastric and postepigastric scutum pale orange, fused, covering 3/4 of the abdomen length. 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. Palp : trochanter without ventral projection; bulb with 1 ven-tral protuberance, distal end of bulb stout (Fig. 2 A-I). Female (paratype, SYNU-708). Same as male, except as noted. Habitus as in Fig. 3 A-C. Body : 1.82 long. Carapace : 0.81 long, 0.66 wide. Mouthparts : chelicerae and endites unmodified. Abdomen : 1.24 long, 0.79 wide; dorsal scutum approximately 1/3 of the abdomen length. Epigastric area : postepigastric scutum with inverted bell-shaped structure (Fig. 3 G and H). Endogyne : winding tube simple, strongly convoluted; lateral apodemes present (Fig. 3 I). Diagnosis This species is similar to Ischnothyreus yueluensis Yin & Wang, 1984 in the size of the abdominal scuta, but can be distinguished by the flag-shaped sclerotised process of cheliceral fang (Fig. 2 J) vs. small stick-shaped sclerotised process ( Huang et al. 2021 : fig. 4G), the stout distal end of bulb (Fig. 2 G and H) vs. elongated distal end, with several leaf-shaped membranes ( Huang et al. 2021 : figs. 5G and H) and the inverted bell-shaped structure of postepigastric scutum of female (Fig. 3 G) vs. small, narrow bowl-shaped structure ( Huang et al. 2021 : fig. 6H). Etymology The specific epithet is a noun in apposition taken from the type locality. Distribution Known only from the type locality.