Meishania fulvotigera Konstantinov, Ruan and Prathapan, 2018

Ruan, Yongying, Konstantinov, Alexander S., Prathapan, K. D., Zhang, Mengna, Jiang, Shihong & Yang, Xingke, 2018, New contributions to the knowledge of Chinese flea beetle fauna (III): revision of Meishania Chen & Wang with description of five new species (Coleoptera: Chrysomelidae: Galerucinae), Zootaxa 4403 (1), pp. 186-200 : 196

5. Meishania fulvotigera Konstantinov, Ruan and Prathapan , new species

( Fig. 5 )

Etymology: This new species is named after the color of its dorsum and the comparatively larger size. The name is a noun in apposition.

Distribution: China (Yunnan).

Description: Body length: 2.60–2.70 mm. Body width: 1.80–1.90 mm. Body length to width ratio: 1.40–1.50. Pronotum width to length ratio: 1.90–2.00. Pronotum width at base to width at apex ratio: 1.20–1.30. Elytron length (measured along suture) to width of both: 1.00–1.10. Length of elytron to length of pronotum ratio: 3.15– 3.25. Width of elytra at base (measured across middle of humeral callus) to width of pronotum at base ratio: 1.15– 1.25.

Body entirely pale yellow brown. Ovate in dorsal view.

Vertex impunctate, except for one supraorbital pore on each side near eye. Antennal calli well delimited. Supracallinal sulcus poorly developed; midfrontal, supraantennal, and suprafrontal sulci well developed. Frontal ridge trapezoidal and sharply widened near antennal calli, extremely narrow beneath. Supraorbital and orbital sulci deep. Width of frontal ridge to antennal sockets (excluding outer ridges) ratio: 0.40–0.50. Distance between eyes (just above antennal sockets) to transverse diameter of eye in frontal view ratio: 2.55–2.65. Longitudinal diameter of eye to transverse diameter of eye in frontal view ratio: 1.80–1.90. Anterior margin of labrum straight.

Proportions of antennomeres 1 to 11 as follows: 12:11:6:8:9:9:10:10:11:10:16. Length to width ratio of antennomere 9: 2.00–2.10; antennomere 10: 1.70–1.80; antennomere 11: 2.80–2.90.

Pronotum with punctures extremely sparse, shallow and minute. Lateral margins of pronotum convex, with maximum width near middle. Posterior margin feebly sinuate. Anterolateral callosity protruding forward, rounded; posterolateral callosity weak, slightly projecting laterally.

Elytra parallel sided, with humeral calli well developed; punctures closely spaced, confused.

Length (excluding trochanter) to maximum width ratio of metafemur: 2.10–2.20. Length of first metatarsomere to length of second metatarsomere ratio: 2.03–2.13.

Spermathecal receptacle about 1.6 times longer than maximum width, inner side convex, outer side concave, widest near middle. Spermathecal pump longer than receptacle, with horizontal part longer than vertical, apex slightly pointed. Tignum Y shaped, strongly expanded, with deeply concave posterior margin. Anterior part of tignum narrow and straight. Vaginal palpi nearly as wide as long, separated at base and apex, entirely fused with each other along middle.

Type: Holotype: ♀, lables: 1) CH, S Sichuan, NE of Mianning, 8km NW of Lajiajia, upper forest, 3000– 3400 m, 5.08. 2002, Belousov & Kabak leg, 2) Holotype, Meishania fulvotigera n. sp. des Konstantinov & Ruan, 2016 ( IZCAS).

Diagnosis: Meishania fulvotigera sp. nov. resembles Meishania flavipennis sp. nov. in having yellow brown body. However, it can be differentiated from M. flavipennis sp. nov. by the smaller size (body length 1.95–2.05 mm in M. fulvotigera ; 2.60-2.70 mm in M. flavipenni s) and the poorly developed anterolateral calli of pronotum (strongly produced foward in M. fulvotigera ).

Figures

FIGURE 5. Meishania fulvotigera sp. nov. A: habitus (Holotype, female). B: prothorax, dorsal view (Holotype). C: head, frontal view (Holotype). D: vaginal palpi (Holotype). E: spermatheca (Holotype). F: tignum (Holotype). G: pygidium (Holotype).