Scaphidium crypticum, Tang, Liang, Li, Li-Zhen & He, Wen-Jia, 2014

Tang, Liang, Li, Li-Zhen & He, Wen-Jia, 2014, The genus Scaphidium Olivier in East China (Coleoptera, Staphylinidae, Scaphidiinae), ZooKeys 403, pp. 47-96 : 53-55

Scaphidium crypticum sp. n. Figs 13-16, 78-81, 151, 152

Type material.

Holotype.Zhejiang: ♂, Longquan City, Fengyangshan, alt. 1100 m, 5.VI.2008, W.-X. Bi leg. "Holotype / Scaphidium crypticum / Tang & Li" [red handwritten label] (SHNU). Paratypes. Zhejiang: 3♂♂, same data as for the holotype (SHNU); 1♀, Qingyuan County, Baishanzu, 8.VII.2009, Z.-W. Yin leg. (SHNU). Fujian: 2♂♂3♀♀, Wuyishan City, Guadun Vil., 27°44'N, 117°38'E, alt 1100-1500m, 25-29.V.2012, Peng & Dai leg. (1 pair in MHNG, remaining in SHNU); 1♂, Wuyishan City, Guadun Vil., 27°44'27"N, 117°37'57"E, alt 1200-1300m, 29.V.2012, X.-B. Song leg. (SHNU). Jiangxi: 2♂♂1♀, Yichun City, Fengxin County, Baizhang Vil., 28°41'18"N, 114°46'13"E, alt. 840-860m, 15.VII.2013, Hu & Lv leg. (SHNU). Guangxi: 1♂, Shangsi County, Shiwandashan, alt. 300-500m, 4.V.2011, L. Tang leg. (SHNU); 1♀, Lingui County, Huaping N. R., alt. 1200m, 13.VII.2011, Z. Peng leg. (SHNU); 1♀, Jinxiu County, 16km away, alt. 900m, 29.VII.2011, Z. Peng leg. (SHNU).

Description.

BL: 4.4-5.1 mm.

Body reddish-yellow. Frons with a triangular blackish median fascia (Fig. 16) on vertex. Antennal club (Fig. 80) blackish with terminal segment slightly lighter in basal 2/3 and distinctly lighter in apical 1/3. Pronotum with two longitudinal black fasciae. Each elytron with one small black humeral spot, one large black median fascia and blackish suture. Prohypomera blackish along the inner side. Prosternum, mesoventrite and metaventrite black. Abdominal sternite III widely black on median portion. Trochanter more or less blackish. Femora blackish except ventral side reddish yellow. A specimen from Guangxi (Fig. 15) with slightly variable coloration: prohypomera and prosternum yellow, mesoventrite and trochanter reddish, femora yellow.

Frons finely and sparsely punctate, punctures of vertex coarser than those on remaining surface.

Pronotum slightly raised above elytra. Antebasal puncture row impressed, interrupted at middle, with punctures coarse and regular; discal punctation similar to that of vertex, intervals as broad as 1.5 to 2 puncture diameter.

Elytra with disc slightly impressed apically, basal and sutural stria rows impressed; discal punctation similar to that of pronotum except that on apical impression which is very coarse and dense; each elytron with 3 long discal puncture rows consisting of very coarse punctures, 1st row more or less indistinct, 2nd and 3rd rows distinct; basal stria row with punctures slightly coarser than those forming pronotal antebasal row, sutural stria puncture row relatively fine.

Prohypomera slightly uneven, with moderately coarse and very shallow punctures.

Mesepisterna finely, sparsely and very shallowly punctate.

Abdominal tergites with relatively fine and sparse punctures. Sternite III with distinct micropunctures on median portions, remaining sternites on basal half with dense microsculpture consisting of micropunctures.

Legs relatively long, mesotibiae and metatibiae moderately curved.

Male. Metaventrite (Fig. 14) impressed at middle, with long and suberect pubescence. Protibiae (Fig. 81) almost straight with small tubercles along ventral sides. Median lobe of aedeagus (Fig. 78) with sclerotized internal sac (Fig. 79) consisting of two apical sclerotized rods, x-shaped median sclerite and two basal sclerotized rods.

Distribution.

China (Zhejiang, Fujian, Jiangxi, Guangxi).

Remarks.

The species is similar to Scaphidium biwenxuani in its fascia pattern, but can be distinguished from the latter by the elytra lacking the inner basal black dot and the posterior portion of the head in having a black spot.

Etymology.

The Latin adjective “crypticum” means mysterious.