Lathrobium yangyihani
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Ordo: Coleoptera
Familia: Staphylinidae
Genus: Lathrobium
Name
Lathrobium yangyihani Lin & Peng sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Type material
Holotype: ♂, labeled ‘China: Guangdong Prov., Ruyuan County, Nanling National Nature Reserve, Hamashi, 24°55'37"N, 112°59'21"E, 1,750 m, 01.V.2015, Peng, Tu & Zhou leg.’ (SNUC). Paratypes: 3 ♀♀, same data as the holotype (SNUC); 2 ♀♀, labeled ‘China: Guangdong Prov., Ruyuan County, Guangdong Di Yi Feng, 24°55'29.62"N, 112°59'31.42"E, 1,538–1,784 m, 28.VI.2020, Xia, Zhang, Yin & Lin leg.’ (SNUC); 2 ♀♀, 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); 1 ♀, labeled ‘China: Guangdong Prov., Ruyuan County, Nanling National Nature Reserve, Shikengkong, 24°55'38"N, 112°59'30"E, 1,850 m, 27.IV.2015, Peng, Tu & Zhou leg.’ (SNUC); 1 ♀, labeled ‘China: Guangdong Prov., Ruyuan County, Nanling National Nature Reserve, Laopengyidui, 24°56'21"N, 113°01'21"E, 1,260 m, 02.V.2015, Peng, Tu & Zhou leg.’ (SNUC); 1 ♂, 1 ♀, labeled ‘China: Guangdong Prov., Shixing County, Chebaling, 24°43'12.27"N, 114°11'18.03"E, 904–1,004 m, 23.VI.2020, Xia, Zhang, Yin & Lin leg.’ (SNUC).
Description
Measurements (in mm) and ratios: BL 5.34–6.67, FL 2.19–2.67, HL 0.76–0.98, HW 0.78–0.87, AnL 1.49–1.74, PL 1.00–1.09, PW 0.82–0.93, EL 0.41–0.65, AL 0.81–0.83, HL/HW 0.97–1.13, HW/PW 0.90–1.00, HL/PL 0.75–0.92, PL/PW 1.15–1.27, EL/PL 0.41–0.60.
Habitus as in Figure 1A. Body brown, legs, and antennae light brown. Head approximately as long as broad; punctation moderately coarse and sparse, sparser in median dorsal portion; interstices with shallow microreticulation; eyes small and composed of approximately 40 ommatidia.
Pronotum nearly parallel-sided; punctation somewhat sparser than that of head; impunctate midline broad; interstices without microsculpture.
Elytral punctation moderately dense, shallow, and ill-defined. Hind wings completely reduced.
Abdomen with fine and moderately sparse punctation, that of tergite VII somewhat sparser than that of anterior tergites; interstices with shallow microsculpture; posterior margin of tergite VII without palisade fringe.
Male. Sternites III–VI unmodified; sternite VII (Fig. 2D) with very shallow postero-median impression without distinctly modified setae, posterior margin weakly concave in the middle; sternite VIII (Fig. 2E) with symmetric, subtriangular emargination and shallow impression; aedeagus as in Figure 2F and G, with stout ventral process of highly distinctive shape; dorsal plate with moderately long apical portion and very short basal portion; internal sac without sclerotized spines. Female. Posterior margin of tergite VIII (Fig. 2A) strongly convex. Posterior margin of sternite VIII (Fig. 2B) strongly convex and with moderately dense micropubescence; tergite IX (Fig. 2C) with very short, medially undivided antero-median portion and moderately long postero-lateral processes; tergite X (Fig. 2C) 2.5 times as long as antero-median portion of tergite IX.
Comparative notes
The new species resembles L. guangdongense Peng & Li, 2014 in habitus and the similarly derived morphology of Sternites VII–VIII but differs from this species by the stouter ventral process and the simple internal sac of the aedeagus. For illustrations of L. guangdongense, see Figure 3A–C and Peng et al. (2014)[1].
Etymology
The species is named after Yi-Han Yang, who supported us on our field trips.
Distribution and natural history
The species was found in six adjacent localities in western Ruyuan County to southeastern Shixing County. A specimen was sifted, together with L. guangdongense, from moist leaf litter of a secondary mixed and deciduous forest at an altitude of 1,260 m (Fig. 5).
Original Description
- Lin, X; Zhen, Y; Peng, Z; 2021: On the Lathrobium fauna of the Nanling National Nature Reserve, southern China (Coleoptera, Staphylinidae, Paederinae) ZooKeys, 1054: 15-24. doi
Images
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Other References
- ↑ Peng Z, Li L, Zhao M (2014) Seventeen new species and additional records of Lathrobium (Coleoptera, Staphylinidae) from mainland China.Zootaxa3780(1): 1–35. https://doi.org/10.11646/zootaxa.3780.1.1
