Coecobrya sanmingensis, 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 : 18-19

Taxon classification Animalia Collembola Entomobryidae

Coecobrya sanmingensis sp. n. Figs 1, 3-13, 14-18, Table 1

Type locality.

China, Fujian, Sanming, 26.500°N, 117.717°E, altitude 707 m.

Material.

Holotype: ♀ on slide, China, Fujian Province, Sanming City, Guanzhuang National Forestry Farm, 26.500°N, 117.717°E, altitude 707 m, 17 September 2014, Daoyuan YU leg. (# Sanming 9-2). Paratypes: 1 ♂, 1 ♀, and 1 juvenile of unclear sex on slides and 5 juveniles in alcohol, same data as holotype.

Description.

Body length up to 1.09 mm. Body pale (Fig. 1).

Antenna 1.96‒2.02X as long as cephalic diagonal. Antennal segment ratio as I: II: III: IV = 1: 1.69: 0.88‒1.23: 1.94‒3.08. Smooth spiny mic at base of antennae 3 dorsal, 3 ventral on Ant. I, 1 internal, 1 external and 1 ventral on Ant II. Two internal S-chaetae of Ant III organ expanded (Fig. 3). Ant. IV subapical organ thin, distally expanded (Fig. 4). Long smooth straight chaetae absent.

Eyes 1+1. Prelabral and labral chaetae 4/ 5, 5, 4, all smooth; median three chaetae of the first row longer than lateral ones (Fig. 5). Eight clypeal chaetae arranged in three rows; median three ciliate and much smaller (Fig. 6). Dorsal cephalic chaetotaxy with 4 antennal (An), 3 median (M) and 5 sutural (S) mac; Gr. II with 4 mac (Fig. 7). Mandibles 4+5 teeth. Subapical chaeta of maxillary outer lobe larger than apical one; 3 smooth sublobal hairs on maxillary outer lobe (Fig. 22). Papillae A‒E of labial palp with 0, 5, 0, 4, 4 guard chaetae respectively; lateral process of papillae E slightly thicker than normal chaetae, with tip beyond apex of labial papilla (Fig. 8). Labial chaetae as mRel1l2, R ciliate, R/m=0.4; chaetae X and X2‒4 ciliate. Cephalic groove with 8(7) chaetae, anterior four smooth and posterior ones ciliate (Fig. 9).

Trochanteral organ with 23 smooth spiny chaetae; 16 in arms and 7 between them (Fig. 10). Partial inner differentiated tibiotarsal chaetae “smooth” with ciliations 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 pointed (Fig. 11). Abd. IV 3.56‒3.83X as long as Abd. III along dorsal midline. Ventral tube anteriorly with 3+3 large ciliate chaetae; posteriorly with 4 distal and 4‒5 proximal smooth chaetae; each lateral flap with 7 smooth chaetae (Fig. 12). Manubrium without smooth chaetae. Manubrial plaque with 2+2 pseudopores and 3+3 ciliate chaetae. Distal smooth part of dens 1.0X as long as mucro. Mucro falcate (Fig. 13).

Th. II with 3 (m1, m2, m2i) medio-medial, 3 (m4, m4i, m4p) medio-lateral, about 15 posterior mac, 1 ms and 2 sens. Th. III with 25 mac and 2 lateral sens; mac m5i absent; p5 and m6i as mac (Fig. 14). Abd. I with 5 (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, and 2 sens; ms absent (Fig. 15). Abd. IV with 7 (I, M, A4, A6, B4‒6) central, 6 lateral mac (D3, E2-4, E2p, F1) (Fig. 16) and 17 sens; two lateral sens (as, ps) of normal length and others elongate (Fig. 17). Abd. V with 3 sens (Fig. 18).

Etymology.

Named after the type locality.

Ecology.

In soil.

Remarks.

Coecobrya sanmingensis sp. n. is the fourth 1+1 eyed species of the genus. These eyed species share many features such as the presence of eyes, tip of lateral process of labial palp E beyond the same papillae, dorsal cephalic chaetotaxy (4An, 3M, 5S), partial inner differentiated tibiotarsal chaetae “smooth”, 2+2 pseudopores on the manubrial plaque, 3+3 medio-medial mac on Th. II, 1+1 central and 3+3 lateral mac on Abd. III, and 6 lateral mac on Abd. IV. They can be separated by antennal long smooth chaetae, chaetae on the ventral side of head, trochanteral organ, unguiculus outer edge, smooth manubrial chaetae, and dorsal chaetotaxy (Table 1).