Lathrobium jiaxingyangi Lin & Peng, 2021

Lin, Xiao-Bin, Zhen, Yi-Dan & Peng, Zhong, 2021, On the Lathrobium fauna of the Nanling National Nature Reserve, southern China (Coleoptera, Staphylinidae, Paederinae), ZooKeys 1054, pp. 15-24 : 15

publication ID

https://dx.doi.org/10.3897/zookeys.1054.68991

publication LSID

lsid:zoobank.org:pub:A1637949-C460-431D-8768-91EE36902077

persistent identifier

https://treatment.plazi.org/id/A2AC29DE-EA0E-438B-BEE4-1D131CFE0B1F

taxon LSID

lsid:zoobank.org:act:A2AC29DE-EA0E-438B-BEE4-1D131CFE0B1F

treatment provided by

ZooKeys by Pensoft

scientific name

Lathrobium jiaxingyangi Lin & Peng
status

sp. nov.

Lathrobium jiaxingyangi Lin & Peng sp. nov.

Figures 1B View Figure 1 , 3D-G View Figure 3 , 6 View Figures 5–7

Type material.

Holotype: ♂, labeled 'China: Guangdong Prov., Ruyuan County, Nanling National Nature Reserve, Shikengkong, 24°55'33"N, 112°59'29"E, 1,820 m, 30.IV.2015, Peng, Tu & Zhou leg.' (SNUC). Paratypes: 1 ♂, same data, but ' 24°55'38"N, 112°59'30"E, 1,850 m, 27.IV.2015, Peng, Tu & Zhou leg’ (SNUC).

Description.

Measurements (in mm) and ratios: BL 7.95-8.34, FL 3.12-3.24, HL 1.09-1.14, HW 1.09, AnL 1.99-2.16, PL 1.34-1.37, PW 1.09-1.14, EL 0.68-0.73, AL 1.55, HL/HW 1.00-1.04, HW/PW 0.96-1.00, HL/PL 0.82-0.83, PL/PW 1.20-1.22, EL/PL 0.51-0.53.

Habitus as in Figure 1B View Figure 1 . Body dark reddish brown, legs reddish brown, antennae dark to light reddish brown.

Head punctation moderately fine and moderately dense, not sparser in median dorsal portion; interstices with shallow microsculpture. Eyes moderately small and composed of approximately 60 ommatidia.

Pronotum nearly parallel-sided; punctation somewhat sparser than that of head; impunctate midline broad; interstices without microsculpture.

Elytral punctation moderately dense and shallow. Hind wings completely reduced.

Abdomen with fine and moderately dense punctation, that of tergite VII somewhat sparser than that of anterior tergites; interstices with shallow, but distinct microsculpture; posterior margin of tergite VII without palisade fringe.

Male. Sternites III-VI unmodified; sternite VII (Fig. 3D View Figure 3 ) strongly transverse and symmetric, with shallow median impression with modified short black setae, posterior margin broadly and very weakly concave; sternite VIII (Fig. 3E View Figure 3 ) approximately as long as broad, with moderately extensive median impression posteriorly, this impression with numerous distinctly modified, stout black setae, posterior excision relatively deep; aedeagus as in Figure 3F and G View Figure 3 ; ventral process weakly hooked apically in lateral view; dorsal plate with long apical portion and very short basal portion; internal sac with one sclerotized spine.

Female. Unknown.

Comparative notes.

Lathrobium jiaxingyangi resembles L. wangxingmini sp. nov. in having the similarly derived chaetotaxy of the asymmetric male sternite VIII and the long dorsal plate of the aedeagus. It is distinguished from L. wangxingmini by the lighter coloration, the smaller body size, the chaetotaxy of the male sternite VII, the shallower posterior excision of the male sternite VIII, and the morphology of the aedeagus (shape of ventral process; internal sac with one shorter sclerotized spine).

Etymology.

The species is named after Xing-Yang Jia, who supported us on our field trips.

Distribution and natural history.

The type locality is situated in the Nanling National Nature Reserve to western Ruyuan County, eastern Guangdong. The specimens were sifted from leaf litter and grass roots in shrub habitats at an altitude of 1,850 m (Fig. 6 View Figures 5–7 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Lathrobium