Review of the millipede genus Hyleoglomeris Verhoeff, 1910 in China, with descriptions of new species (Diplopoda, Glomerida, Glomeridae)
Author
Golovatch, Sergei I.
Author
Liu, Weixin
Author
Geoffroy, Jean-Jacques
text
Zootaxa
2012
3358
1
27
journal article
10.5281/zenodo.214383
39e4456d-a611-49e2-acb1-37e84cde484a
1175-5326
214383
Hyleoglomeris xia
sp. n.
Fig. 2
.
Material examined:
Holotype
male (
IZAS
),
China
, Hunan Prov., Linwu County, Sanhe Town, Tianhe Village, Cave 1,
19.06.2009
, leg. Tian Mingyi & Xue Zhihong (CHIhn09–LWX02).
Paratype
.
1 female
(
SCAU
), same locality, together with
holotype
.
Name:
To emphasize the animal’s ocelli being unpigmented, “
xia
” in Chinese meaning “blind”; a noun in apposition.
Diagnosis:
Differs from all congeners in the residual coloration of the antennae, the presence of a lobe on the caudomedial process of the telopod femur, of a setoid filament at the tip of the telopod syncoxital horns, of only a residual telopod tibial process, coupled with a roundly subtrapeziform, slightly concave, central lobe of the telopod syncoxite, as well as a semi-circular notch of male syncoxite 18, and a 3-segmented male telopodite 17. See also Key below.
Description:
All characters like in
H. tiani
sp. n.
, except as follows.
Length ca 5.0 (
holotype
) or 6.0 mm (
paratype
), width 2.5 (
holotype
) or 3.0 mm (
paratype
). Coloration nearly entirely pallid, only antennae in
paratype
very faintly infuscate, brownish. Ocelli at least 4+1, translucid, barely visible. Antennomere 6 ca 2.1–2.2 times as long as high.
Second tergite with 7 or 8 transverse striae, 3 or 4 starting below, one level to, the remaining striae above schism, 3 or 4 frontmost ones crossing the dorsum.
Male leg 17 (
Fig. 2
A) with a very low and rather irregularly shaped outer coxal lobe; telopodite 3-segmented, tarsus with only one subapical spine.
Male leg 18 (
Fig. 2
B) with a rather broadly rounded syncoxital notch; telopodite 4-segmented.
Telopods (
Fig. 2
C-E) with a high, apically slightly concave, sparsely setose, central syncoxital lobe flanked by two setose horns, each latter crowned by a minute, elongate lobule supplied with an adjacent mesal setoid filament (
Fig. 2
E). Prefemur and, to a lesser extent, femur micropapillate laterally. Caudomedial femoral process prominent, subapically with a rounded lobe (
lo
) on caudal face. Caudomedial process of tibia very obscure, low, membranous; tibial tubercle on caudal face evident, papillate. Tarsus strongly sigmoid, subacuminate apically.
Remarks
: Since this species shows such troglomorphic traits as entirely unpigmented tegument and ocelli, it can well prove to be a troglobite. Residual coloration of the antennae in one of the two specimens is noteworthy.