Baoshanaltica minuta Konstantinov & Ruan

Ruan, Yongying, Konstantinov, Alexander S., Prathapan, K. D. & Yang, Xingke, 2017, Contributions to the knowledge of Chinese flea beetle fauna (II): Baoshanaltica new genus and Sinosphaera new genus (Coleoptera, Chrysomelidae, Galerucinae, Alticini), ZooKeys 720, pp. 103-120 : 105-108

Baoshanaltica minuta Konstantinov & Ruan sp. n. Figs 1, 2, 3

Etymology.

The new species is named after its small body size.

Distribution.

China.

Host plant.

Possibly unknown species of moss.

Type material.

Holotype, ♂ (IZCAS), labels: 1) Yunnan, 60 km W Baoshan, Lujian Zhen, 11.VI.2012, N24.55 '736 E99.48 '332, h-2383 m, moss sifted, leg. A. Konstantinov. 2) Holotype. 3) Baoshanaltica minuta des. Konstantinov & Ruan, 2016.

Paratype.

1♂ (USNM), labels: 1) Yunnan, 60 km W Baoshan, Lujian Zhen, 111.VI.2012, N24.55 '736 E99.48 '332, h-2383 m, moss sifted, leg. A. Konstantinov. 2) Paratype Baoshanaltica minuta des. Konstantinov & Ruan, 2016.

Description.

Dorsum and venter uniformly brown to dark brown, without metallic luster. Body oval in dorsal view, highly convex in lateral view. Body length: 1.40-1.55 mm (n=2). Body width (widest point of elytra): 1.05-1.10 mm.

Antennal calli poorly delimited with supracallinal, midfrontal, supraantennal, and suprafrontal sulci absent to poorly developed. Frontal ridge wider between antennal sockets than near clypeus. Top of frontal ridge separated from vertex by more or less round impression. Width of frontal ridge to antennal sockets (counting surrounding ridges), ratio 2.50-2.60. Vertex shiny, without punctures, except for supraorbital, obviously concave at its lower part near frontal ridge. Distance between eyes (just above antennal sockets) to transverse diameter of eye in frontal view, ratio 3.50-3.60. Longitudinal diameter of eye to transverse diameter of eye in frontal view, ratio 1.95-2.05. Sides of head below eyes converging ventrally. Distance between antennal sockets to transverse diameter of one antennal socket, ratio 2.50-2.60.Proportions of antennomeres as follows: 13:7:6:7:7:6:8:8:9:10:15. Length to width of antennomere 9, ratio 1.20-1.25. Length to width of antennomere 10, ratio 1.05-1.10. Length to width of antennomere 11, ratio 1.45-1.55.

Pronotal surface glabrous, with punctures as large as elytral ones, their diameter 2-3 times smaller than distance between them. Sides of pronotum curved, somewhat angulate near middle. Posterolateral setiferous pore of pronotum protruding laterally beyond lateral margin. Elytral humeral callus absent. Hind wings absent. Elytron with small punctures arranged in 8 rows, scutellar row absent. Interspaces slightly costate.

Length (not counting trochanter) to maximum width of metafemur, ratio 1.90-1.95. Length to width of metatibia in lateral view, ratio 7.70-7.80. Width of metatibia at base to width at apex in dorsal view, ratio 0.50-0.60. Length of metatibia to length of first metatarsomere, ratio 4.50-4.60. First protarsomere of male, length to width, ratio (in dorsal view), ratio 1.40-1.50. First metatarsomere of male, length to width, ratio (in dorsal view), ratio 2.20-2.30. Length of first metatarsomere to length of second metatarsomere, ratio 2.90-3.00.

Aedeagus slender, flattened in cross section, with long membranous window ventrally. In lateral view aedeagus strongly and evenly curved with apex abruptly bent ventrally. Apical denticle absent.