Sinhomidia bicolor Zhang, Deharveng, Greenslade & Chen 2009
Creators: name: Jin, Han
name: Jia, Shao-Bo
name: Yan, Hua-Chao
name: Jordana, Rafael
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Collembola
Entomobryomorpha
Entomobryidae
Sinhomidia
Sinhomidia bicolor

description: Sinhomidia bicolor (Yosii, 1965) Zhang, Deharveng, Greenslade & Chen, 2009
Figs 1–8, Figs 14–18, Table 1
Locality. CHINA, Baiyun Mount, Guangdong Province, 171m asl, coordinates 23°10'N, 113°17'E. On litter, leg. Jia, Yan & Jin, September 20, 2016. One male: collection code number CGZ161010504 J. Two females: collection code number CGZ161005507J, CGZ161010503 J. Deposition School of Life Sciences, Liaocheng University.
Description of male. Body length up to 3.3 mm. Ground colour pale yellow in alcohol. Eye patches dark purple. Ant I and II lightly pigmented, Ant III and IV deeply pigmented (Figs 4, 5). Deep purple pigment present dorso-laterally on mesothorax, whole of Abd II and III; Abd IV with scattered pigment on anterior and posteriorlaterally and on posterior side of manubrium (Fig. 1). Hind femur deep purple (Fig. 7). Differences in the distribution of colour of females from the same locality to those in Zhang et al. (2009).
Head. Ant five times as long as cephalic diagonal. Ant I–II with scales (Figs 2, 3).
Thorax. Trochanteral organ with about 38–45 smooth spiny chaetae (Fig. 14). Coxal macrochaetal formula: 3, 3/4+2, 2+2+2 (Fig. 15). Leg covered with scales to femur (Fig. 7), tibiotarsi without scales (Fig. 8).
Abdomen. Dorsal face of manubrium covered with scales (Fig. 6). Basal two thirds of dens with 40–43 spines arranged in one or two rows along inner edge, scales absent. Dental basal chaetae bs1 and bs2 multilaterally ciliate, bs1 much thicker and longer than bs2. A pair of testes on both sides of thorax and abdomen, with medial unpaired duct connecting to genital tract and extending anteriorly to Abd I. Genital tract gradually narrowing from anterior to posterior, following a 360° twist to connect with genital plate (Fig. 17). Genital plate with 15 circinate chaetae around the genital pore.
Chaetotaxy. Dorsal chaetotaxy of head with the absence of An2e compared to females (Fig. 18). Dorsal Th III with about 20 mac. Lateral sensilla probably present in its normal location but not all seen S formula:?2/122, mS formula:?0/101
Body scales. Scales narrow, pointed and fusiform with coarse striations, present on Ant. I–II, head, thorax, basal segments of legs but not on tibiotarsus, abdomen and on the posterior side of the manubrium.
Remarks. Males were not included in previous descriptions of this species so are described here. Our male specimen agrees with the description in female specimens except An chaetal number of head and number of Th III chaetae. The colour differs from the female as there is no colour on Abd IV, only scattered pigment. The females in our sample are similar to that described in Zhang et al. (2009). Only one male has been found, which has some sexual dimorphism compared to females, so could be only an individual variation. This shortened description above emphasises the distinction of male from female.
description: Published as part of Jin, Han, Jia, Shao-Bo, Yan, Hua-Chao & Jordana, Rafael, 2017, A new species of the Chinese endemic genus Sinhomidia (Collembola: Entomobryinae) described and the first description of amale of Sinhomidia bicolor, pp. 569-576 in Zootaxa 4358 (3) on pages 570-572, DOI: 10.11646/zootaxa.4358.3.10, http://zenodo.org/record/1068676