Songius hlavaci Zhao, Yin & Li, 2010

Yin, Zi-Wei & Hu, Zheng-Kun, 2023, Two new sympatric species of Songius from Mount Fanjing, Southwest China (Coleoptera: Staphylinidae: Pselaphinae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 63 (2), pp. 297-304 : 303

Songius hlavaci Zhao, Yin & Li, 2010

Chinese common name: ẄKDzDȒƤ

Songius hlavaci Zhao,Yin & Li, 2010:79 . Type locality: China: Zhejiang

Province, Lin’an City,West Tianmushan Mountain, elev. 1,450 m.

Songius pseudohlavaci Yin & Li, 2015: 295 , syn. nov. Type locality:

China: Hunan Prov., Yongzhou City, Shuangpai County, Yangming

Shan Nature Reserve (ca. 26°02–07ʹN, 111°53–59ʹE).

Type material examined. Songius hlavaci : HOLOTYPE: CHINA: ZHE- JIANG: J, ‘China: Zhejiang Province, Lin’an City, West Tianmushan Mountain , elev. 1,450 m, 19.ix.2009, Xiao-Bin Song leg’ ( SNUC) . PARA- TYPES: CHINA: ZHEJIANG: 2 ♀♀, same collecting data as for holotype, except ‘ 1300 m, 2.v.2009 ’ and ’ 22.viii.2009, 1200 m ( SNUC).

Songius pseudohlavaci : HOLOTYPE: CHINA: HUNAN: J, ‘ China: Hunan Prov. , Yongzhou City , Shuangpai County, Yangming Shan Nature Reserve [ca. 26°02–07′N, 111°53–59′E], 2004.x.02, Jian-Hua Huang leg.’ ( SNUC).

Other material examined (12 exx.). CHINA: ZHEJIANG: 1 J 3 ♀♀, ‘China: Zhejiang, Anji County, Longwang Shan, N. R., Qianmutian– Qianmu Peak, 30°23′47″N, 119°26′17″E, 1250–1450 m, mixed leaf litter, sifted, 14.v.2013, Chen & Pan leg.’; 1 J, also from Longwang Shan, ‘Qianmutian, 30°24′20″N, 119°26′39″E, ca. 1300 m, sifted from mixed leaf litter, 2012.vi.08, Zi-Wei Yin & Jia-Yao Hu leg.’; 1 ♀, also from Longwang Shan, ‘Tong-hang-gang Hill, 30°24′54″N, 119°26′53″E, bamboo, pine leaf litter, sifted, 10.vi.2012, Jia-Yao Hu & Zi-Wei Yin leg.’; 1 ♀, ‘CHINA: Zhejiang, Linan City, W. Tianmu Shan N. R. , firebreak between peak and Longfengjian, 30°20′56″N, 119°25′55″E, 1320 m, from nest of Lasius sp. , 06.ix.2012, Feng, Hu, Yin leg.’; 1♀, ‘China, Zhejiang, Qingliangfeng Mt., Luminyougu Valley, ca. 30°06′32″N, 118°54′01″E, 890 m, 20.vii.2009, Feng, Yuan & Yin leg.’ [Note: these eight specimens were listed in YIN & LI (2015) under S. hlavaci .]; 1 J, ‘China: Zhejiang, An’ji, Longwang Shan Mt., Dongguan-Qianmautian, 30°24′15″N, 119°26′36″E, ca. 1350 m, leaf litter, sifted, 08.vi.2012, Hu & Yin leg.’. FUJIAN: 1 J, ‘China: Fujian Province, Wuyishan City, Tongmu Village, Guadun, 27 ° 44′06″N, 117 ° 38′26″E, mixed forest, leaf litter, wood, sifted, 1218 m, 2.x.2015, Yan, Tu, Shen, Jiang, Zhu leg.’.. CHONGQING: 1 J, 1 ♀, ‘China: Chongqing, Shizhu Co., Dafengbao Scenic Area, ca. 30°9′47″N, 108°24′1″E, 1800-1930 m, 26.ix.2003, X.-B. Song leg., fflm ±ÑffifiAE⁂IJÑḄṈ [J with an Lasius ant, ♀ sifted]’ (all in SNUC).

Revised diagnosis of male. Habitus stout and compact, body length 2.4–2.6 mm; dorsal surface of body glabrous, shiny; antennomeres densely setose. Head with distinct cervical constriction, posterolateral margins bearing scattered row of thickened stiff setae; eyes weakly protruding from head lateral profile; antennomeres moniliform, lacking modification. Pronotal disc broadly and moderately impressed along median longitudinal sulcus. Elytral disc strongly convex, humeri roundly prominent. Protrochanter lacking spine on ventral margin; mesotrochanter with small and mesofemur with tiny tubercle on ventral margin; metacoxa simple, metatrochanter with broad subtriangular ventral spine. Aedeagus asymmetric, median lobe with enlarged basal capsule and foramen, ventral lobe with short membranous apophysis on left side, right side of apical margin split to form two apically pointed branches; dorsal lobe composed of apically greatly curved plate and membranous structures, apical margin of plate strongly serrate; endophallus armature absent; parameres reduced to membranous structure.

Distribution. East China: Zhejiang, Fujian; Central China: Hunan; Southwest China: Chongqing ( Fig. 3 ). New provincial record for Fujian and Chongqing.

Remarks. Songius pseudohlavaci was separated from S. hlavaci by slight differences in aedeagal character, i.e., the dorsal lobe is relatively broader at the apex and lacks a narrow basal expansion on the right margin. Examination of all available material also showed small differences in size of the body and forms of the ventral spines of metafemora. Here we consider all these differences as intraspecific variations among different geographical populations, and conclude this species is widely distributed in eastern, central and southwestern territories of China. The species can be distinguished by characters listed in the ‘revised diagnosis’ section above.

Figures

Fig. 3. Distribution and collecting environment of Songius. A – Map showing the distribution of five Songius species in China. B, C – General environment (A) and habitat (B) of S. brevisetus sp. nov. and S. hubenqii sp. nov. of Mount Fanjing, Guizhou, SW China.