Tomocerus (Ocreatomurus) qinae Yu, Yao & Hu 2016
Year: 2024
Type: other
Abstract: Tomocerus (Ocreatomurus) qinae Yu, Yao & Hu, 2016 (Fig. 8A–D) Material examined. 12 specimens, INDIA, Arunachal Pradesh, Tawang district, Tawang, collected from moss and leaf litter surrounding snowflakes. 27°36.918'N, 91°51.913'E, 3417 m a.s.l., 01.iv.2023, G.P. Mandal leg., Reg no. 3536/H14, deposited in NZC of ZSI. Description. Body length about 3.15 mm. Body scaled. Ground colour yellow with diffused light purple pigmentation on the anterior part of the head. Ant. I–II have slight purple infusion, Ant. III is gradually darker from base to tip continuing to Ant. IV. Eyes in purple patches. Th. II and Th. III with purple pigment on the lateral side (Fig. 8A). PAO absent, 6+6 eyes present. Ant. I: II: III: IV ratio as 1: 1.4: 8.5. Ant. I and Ant. II with scales. Ant. III–IV with annulations instead of scales. Antenna: cephalic diagonal ratio 3.9: 1. Labral chaetae formula as 4/5, 5, 4. Dorsal cephalic chaetotaxy– anterior area: 2, 4; interocular area: 2, 7 and with central chaeta; postocular area: 2+2; posterior area; 2+2. Numerous small chaetae present on posterior head margin. Bothrioticha arrangement from Th. II– Abd V: 2, 1, 0, 0, 1, 2, 0. Body macrochaetae arrangement formula as Th. II–Abd V: 3, 3, 3, 3, 4, 2, 4. Th. II–Abd V each segment with one pseudopore. Trochantero-femoral organ with 1, 1 slender chaetae. Strong ventral chaetae formula of tita I–III as 6, 6, 7. Tenent hair clavate; 2 minute accessory chaetae, 2 thin and long guard chaetae present. Unguis with a basal toothlet, 5 inner distal teeth. One internal tooth present on unguiculus. VT scaled with numerous chaetae. Tenaculum quadridentate, anterior face of corpus with 5–6 chaetae. Ratio of Manubrium: dens: mucro– 2.95: 4.05: 1. Manubrium with large round scales and 9–10 stout spinous chaetae. Dental spine formula–5/4, II; moderate size numerous denticles present, distal spine strongest (Fig. 8B). Outer lamella of mucro with with 4–5 intermediate teeth (Fig. 8D). Remarks. In our collection, one specimen has one side of the dens with a malfunctioned arrangement (Fig. 8C) of dental spines in a zig-zag row. The species has similarity with T. ocreatus Denis, 1948, T. leyensis Yu & Deharveng, 2018, T. virgatus Yu, Qin, Ding, Hu, Zhang & Liu, 2018, T. yueluensis Yu, Qin, Ding, Hu, Zhang & Liu, 2018, in shape of dental spines, but differs from them in number of dental spines, mucronal intermediate teeth and unguis inner teeth number.
Authors: Mandal, Guru Pada, Kumari, Simran, Mandal, Pritha, Roy, Koushik Kumar, Suman, Kusumendra Kumar, Bhattacharya, Kaushik Kumar
Language: English
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W7079587752
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