Coecobrya qinae, Xu, Guo-Liang & Zhang, Feng, 2015

Xu, Guo-Liang & Zhang, Feng, 2015, Two new species of Coecobrya (Collembola, Entomobryidae) from China, with an updated key to the Chinese species of the genus, ZooKeys 498, pp. 17-28 : 20-22

Taxon classification Animalia Collembola Entomobryidae

Coecobrya qinae sp. n. Figs 2, 19-26, 27-30

Type locality.

China, Yunnan, 26.643°N, 98.905°E, altitude 1149 m.

Material.

Holotype: ♀ on slide, China, Yunnan Province, 228 Provincial Highway, 26.643°N, 98.905°E, altitude 1149 m, 11 October 2014, Chunyan QIN leg. (# 14YN2). Paratype: ♀ on slide, same data as holotype.

Description.

Body length up to 1.49 mm. Body with light orange pigment (Fig. 2).

Antenna 1.80X as long as cephalic diagonal. Antennal segment ratio as I: II: III: IV = 1: 2.06: 2.00: 3.06. Smooth spiny mic at base of antennae 3 dorsal, 3 ventral on Ant. I, 1 internal, 1 external and 1 ventral on Ant. II. Ant. II distally with 1 expanded S-chaeta. Two internal S-chaetae of Ant. III organ paddle-like, expanded; chaeta 8 dagger-like (Fig. 19). Long smooth straight chaetae absent.

Eyes absent. Prelabral and labral chaetae 4/ 5, 5, 4, all smooth. Clypeal chaetae not clearly seen. Dorsal cephalic chaetotaxy with 4 antennal (An), 3 median (M) and 5 sutural (S) mac; Gr. II with 3 mac (Fig. 20). Mandibles 4+5 teeth. Papillae A‒E of labial palp with 0, 5, 0, 4, 4 guard chaetae respectively; lateral process of papillae E thicker than normal chaetae, with tip beyond apex of labial papilla E (Fig. 21). Subapical chaeta of maxillary outer lobe slightly larger than apical one; 3 smooth sublobal hairs on maxillary outer lobe (Fig. 22). Labial chaetae as mRel1l2, R ciliate, R/m=0.5; chaetae X, X2 and X4 ciliate. Cephalic groove with 8 chaetae, four of them smooth and others ciliate (Fig. 23).

Trochanteral organ not clearly seen. Partial inner differentiated tibiotarsal chaetae ciliate with ciliations not closely appressed to axis. Tibiotarsi most distally with 11 chaetae in a whorl. Unguis with 3 inner teeth; 2 paired teeth unequal, outer one larger. Unguiculus with a large outer tooth. All tenent hairs clavate (Fig. 24). Abd. IV 3.65X as long as Abd. III along dorsal midline. Ventral tube anteriorly with 7+7 ciliate chaetae; two of them much larger than others (Fig. 25); posteriorly with 4 distal smooth and 6 proximal weakly ciliate chaetae; each lateral flap with 8 smooth chaetae (Fig. 26). Manubrium without smooth chaetae. Manubrial plaque with 2+2 pseudopores and 2+2 ciliate chaetae. Distal smooth part of dens 1.2X as long as mucro. Mucro falcate.

Th. II with 2(1) (m1, m1i) medio-medial, 2 (m4, m4p) medio-lateral, 16‒17 posterior mac, 1 ms and 2 sens; mac m1i sometimes absent; mac m2 and p4‒6 as mic. Th. III with 24‒26 mac and 2 lateral sens; mac m5i absent; p5 and m6ai2 as mac (Fig. 27). Abd. I with 6 (a3, m2-4, m2i, m4p) mac, 1 ms and 1 sens; sens inner to ms. Abd. II with 3 (m3, m3e, m3ep) central, 1 (m5) lateral mac and 2 sens. Abd. III with 1 (m3) central, 3 (am6, pm6, p6) lateral mac, 1 ms and 2 sens (Fig. 28). Abd. IV with 5 central (A4, A6, B4‒6) and 2 lateral mac (E2-3); number of sens not clearly seen (Fig. 29). Abd. V with 3 sens (Fig. 30).

Etymology.

Named after the collector of the specimens.

Ecology.

Among the decompositing leaf litter.

Remarks.

Coecobrya qinae sp. n. is characterized by paddle-like S-chaetae of Ant. III organ, ciliate chaetae X, X2 and X4 posterior to labium, medial mac on Th. II, and 5+5 (mac I, M absent) central and 2+2 lateral mac on Abd. IV. It is most similar to Coecobrya tropicalis Qu, Chen & Greenslade, 2007 in absence of eyes, smooth manubrial chaetae absent, inner differentiated tibiotarsal chaetae, and chaetotaxy of Abd. I‒III. It differs from it in paddle-like S-chaetae on Ant. III organ, thicker lateral process of labial palp, presence of ciliate chaetae X, X2 and X4 posterior to labium, 2+2 ciliate chaetae on manubrial plaque, absence of mac m2, m2i and p4 on Th. II, and unusual arrangement of central mac on Abd. IV.