Coecobrya oculata Zhang & Bedos & Deharveng 2016, sp. nov.
Creators: name: Zhang, Feng
name: Bedos, Anne
name: Deharveng, Louis
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Entognatha
Collembola
Entomobryidae
Coecobrya
Coecobrya oculata

description: Coecobrya oculata sp. nov.
urn:lsid:zoobank.org:act: ABEEC710-582D-4381-9D81-83C2D5948912
Figs 1D, 8; Table 1
Diagnosis
Small size; eyes 1+1; clypeal chaetae ciliate; chaeta R, H 1, H 2, X, X 2 and X 4 ciliate on the ventral side of head; unguiculus lanceolate with outer edge serrate; Abd. IV with 4+4 central and 8+8 lateral mac.
Etymology
Named after the presence of eyes.
Material examined
Holotype CHINA: ♀ on slide, Guangxi, Shanglin, Longshan, Jinlun Dong, 23.45239° N, 108.74154° E, 19 Mar. 2005, Louis Deharveng and Anne Bedos leg. (# CHIgx05-137). Deposited in NJAU.
Paratypes CHINA: ♀ on slide and 5 in alcohol, same data as holotype; 3 ♀♀ on slides and 4 in alcohol, Guangxi, Shanglin, Longshan, Ganlin Dong, 23.45932° N, 108.73436° E, 18 Mar. 2005, Louis Deharveng and Anne Bedos leg. (# CHIgx05-136). Deposited in MNHN.
Description
Body length up to 1.38 mm. Body colour white (Fig. 1D).
Antenna 1.6–1.7 times as long as cephalic diagonal. Antennal segments ratio as I: II: III: IV = 1: 1.5–1.8: 1.2–1.6: 2.6–2.7. Long, smooth straight chaetae absent on antennae.Ant. II distally with 1 small rod-like S-chaeta. Ant. III organ with 2 rods. Ant. IV not annulated.
Eyes 1+1. Clypeal chaetae ciliate but their arrangement not clearly seen. Dorsal cephalic chaetotaxy with 4 sutural chaetae and 5(4) mac in Gr. II (Fig. 8B). Lateral process of labial palp straight, thicker than normal chaetae (Fig. 8C). Labial base as mRel 1 l 2, chaeta R ciliate and 0.45–0.60 length of M; chaetae H 1, H 2, X, X 2 and X 4 ciliate; chaeta X 3 absent (Fig. 8D). Cephalic groove with 6 chaetae, the first and the third smooth and others ciliate.
Trochanteral organ with 9–13 smooth spine-like chaetae; 7–9 in arms and 2–4 between them (Fig. 8E). Inner differentiated tibiotarsal chaetae ciliate with ciliations not closely appressed to axis. Ungual basal paired teeth unequal, outer one large. Unguiculus lanceolate with outer edge serrate (Fig. 8F). Abd. IV 3.0–4.4 times as long as Abd. III along dorsal midline. Ventral tube anteriorly with 4 ciliate chaetae on each side and two of them much larger (Fig. 8G); posteriorly with 6 smooth chaetae (Fig. 8H); each lateral flap with 5 smooth chaetae and 1 additional ciliate chaeta rarely present. Manubrial plaque with 2 pseudopores and 3(2) ciliate chaetae. Distal smooth part of dens slightly longer than mucro (Fig. 8I).
Th. II with 4 (m1, m1i, m2, m2i) medio-median, 3 (m4, m4i, m4p) medio-lateral and 21–23 posterior mac. Th. III with about 29 mac; m5i, a6i, p5, m6e, m6i as mac; a4i2 and a6i sometimes absent in young specimens (Fig. 8J). Abd. I with 6 (m2–4, m2i, a3, m4p) mac. Abd. II with 3 (a2, m3, m3e) central and 1 (m5) lateral mac. Abd. III with 1 (m3) central and 3 (am6, pm6, p6) lateral mac (Fig. 8K). Abd. IV with 4 central (A6, B4–5, M), 8 lateral mac; F2 and F3 as mac (Fig. 8L). Abd. V with 3 sens (Fig. 8M). S-chaetae formula: 2+ms, 2/1+ms, 2, 2+ms, 2, 3. About 6 long S-like chaetae on Abd. IV.
Ecology
Cave-restricted species, non-troglomorphic.
Remarks
Coecobrya oculata sp. nov. is characterized by small size, 1+1 eyes, ciliate chaetae R, H 1, H 2, X, X 2 and X 4 on the ventral side of head, serrate outer edge of unguiculus, absence of ms on Abd. III and 4+4 central mac on Abd. IV. See Table 1 for comparison with other Chinese cave species.
description: Published as part of Zhang, Feng, Bedos, Anne & Deharveng, Louis, 2016, Cave-dwelling Coecobrya from southern China with a survey of clypeal chaetae in Entomobryoidea (Collembola), pp. 1-21 in European Journal of Taxonomy 226 on pages 14-16, DOI: 10.5852/ejt.2016.226, http://zenodo.org/record/3840350