Sinella colorata Zhang & Qu & Deharveng 2010, n. sp.
Creators: name: Zhang, Feng
name: Qu, Ji-Qiang
name: Deharveng, Louis
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Collembola
Entomobryomorpha
Entomobryidae
Sinella
Sinella colorata

description: Sinella colorata n. sp.   (Figs 1A, B; 2; 3)  
 TYPE MATERIAL. — China. Guangxi, Huanjiang, Mulun National Reserve, Min Li forest, litter, Berlese extraction, sample no. CHIgx05-102, 14.III.2005, Deharveng L. & Bedos A. leg., š holotype on slide (NJU). — Paratypes: same data as holotype, 1 š, 1 specimen with sex not visible (probably ♀) on slide (NJU); 1 š, 1 juvenile, 1 specimen with sex not visible (probably ♀) on slide (MNHN).   
OTHER MATERIAL EXAMINED. — Same data as holotype, except Berlese extraction following sieving (CHIgx05-109), 1 ♀, 4 specimens with sex not visible on slide (NJU); 1 š, 4 specimens with sex not visible on slide (MNHN).  
TYPE LOCALITY. — China, Guangxi, Huanjiang, Mulun National Reserve, Min Li forest.  
ETYMOLOGY. — Named after its well-pigmented body. ECOLOGY. — In leaf litter of broadleaf forest.  
DESCRIPTION  
Body length up to 1.25 mm.  
Body colour stable, pale beige-violet to pale orange, antennae pale violet-bluish (Fig. 1A, B). Eyes black, subdivided into a large anterior patch (2 eyes) and a small posterior patch (1 eye).  
 Head: antenna about 2 times as long as cephalic diagonal. Ratio of antennal segment I: II: III: IV as 1: 1.8-2.0: 1.5-1.6: 3.1-3.2. Ant. III organ with 2 slightly expanded rods. Ant.IV without apical bulb. Eyes 3+3. Labral papillae absent.Prelabral and labral chaetae 4/5, 5, 4, all smooth. Lateral process of labial palp as thick as normal chaetae, with tip just reaching apex of labial papilla (Fig. 2A). Subapical chaeta of maxillary outer lobe large, slightly larger than apical one; 4 smooth sublobal hairs on maxillary outer lobe (Fig. 2B). Basal chaetae on labium as MREL 1 L 2, all smooth; chaeta R 0.5 length of chaeta M. Ventral chaeta X behind labium smooth, X 4 ciliate, X 2 and X 3 absent (Fig. 2C). Dorsal cephalic chaetotaxy with 5 sutural macrochaetae (S) and 3 macrochaetae in Gr. II (Fig. 2D).   
Thorax: dorsal macrochaetae shown in Figure 2E. Th. II with 3 (m1, m2, m2i) medio-medial, 3 (m4, m4p, m4i)medio-lateral,14-16 posterior macrochaetae (with p4 and p5 as macrochaetae,p4i often absent) and 3 lateral s-chaetae (the internal one smaller). Th. III with 20-22 macrochaetae and 2 s-chaetae; p5, m6p and a7 as microchaetae.Trochanteral organ with 8-13 smooth spiny chaetae, 6-10 in arms and 2or 3between them (Fig. 2F).Inner differentiated tibiotarsal chaetae ciliate with ciliations not closely appressed to axis; inner outstanding macrochaeta ciliate and tapered at tip, located at about 0.33 distance from base. Unpaired tooth of claw at 45% from inner edge base. Ungual inner basal paired teeth unequal, outer one much larger. A pair of small outer basal teeth. Unguiculus lanceolate with outer edge smooth. Tenent hairs of all tibiotarsi thin and acuminate (Fig. 2G).  
Abdomen:Abd.IV 2.8-3.8 times as long as Abd.III along dorsal midline.Abd.I with 5 (m2i, m2-4, m4p) central macrochaetae and 2 s-chaetae. Abd. II with 3 (a2, m3, m3e) central, 1 (m5) lateral macrochaetae and 2 s-chaetae. Abd. III with 1 (m3) central, 2 (pm6, p6) lateral macrochaetae and 3 s-chaetae; am6 as microchaeta (Fig.2H). Abd.IV with 3 (A6, B4-5) central, 6 (F1, E2-4, E2p, D3) lateral macrochaetae and about 13 s-chaetae (Fig. 2I). Abd.V with about 30 chaetae and 3 s-chaetae; m2, m3 and m5 always much larger than others (Fig. 3A). Tenaculum with 4+4 teeth and one large, distally bent, apparently weakly striate chaeta. Ventral tube anteriorly with 4 ciliate chaetae on each side (Fig. 3B); posteriorly with 6-10 smooth chaetae, always 4 in distal row (Fig. 3C); each lateral flap with 5 smooth chaetae in adults(Fig.3B) and often 4 in subadults.Manubrium without smooth chaetae. Manubrial plaque with 2+2 pseudopores and 2+2 ciliate chaetae. Distal smooth part of dens 3 times the length of mucro. Mucro bidentate and basal spine short with tip reaching apex of subapical tooth (Fig. 3D).  
REMARKS  
 Sinella colorata n. sp. is characterized by the presence of 4 smooth sublobal hairs on maxillary outer lobe, 3+3 eyes, ciliate chaeta X 4 behind labium, macrochaetae p4 and p5 on Th. II, macrochaeta m5i on Th. III, microchaeta am6 on Abd.III, and long distal smooth part of dens. The 4 sublobal hairs on maxillary outer lobe are observed in Sinella for the first time, though the character is unknown in many species. Among Sinella with 3+3 eyes, S. colorata n. sp. is closest to the Vietnamese species S. pseudostraminea Stach, 1965 in number of eyes, absence of external tooth on unguiculus, and 1+1 central macrochaetae on Abd.III; it diff ers from the latter in shorter mucronal basal spine, presence of a2 and absence of m3ep on Abd. II, and fewer macrochaetae on Abd. IV (Table 1). The 3+3 eyed species of the genus Sinella may be separated by the following key.
description: Published as part of Zhang, Feng, Qu, Ji-Qiang & Deharveng, Louis, 2010, Two syntopic and remarkably similar new species of Sinella and Coecobrya from South China (Collembola, Entomobryidae), pp. 469-477 in Zoosystema 32 (3) on pages 470-471, DOI: 10.5252/z2010n3a8, http://zenodo.org/record/5167390