Meishania flavipennis 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 : 194

4. Meishania flavipennis Konstantinov, Ruan and Prathapan , new species

( Fig. 4 )

Etymology: This new species is named after its body color.

Distribution: China (Yunnan).

Description: Body length: 1.95–2.05 mm. Body width: 1.15–1.25 mm. Body length to width ratio: 1.60–1.70. Pronotum width to length ratio: 1.95–2.05. Pronotum width at base to width at apex ratio: 1.20–1.25. Elytron length (measured along suture) to width of both: 1.20–1.25. Length of elytron to length of pronotum ratio: 3.43– 3.53. Width of elytra at base (measured across middle of humeral callus) to width of pronotum at base ratio: 1.18– 1.28.

Pronotum yellow to dark brown. Elytra yellow to yellow brown. Entire body yellow to yellow brown, pronotum and head darker than elytra in some specimens. Body ovate in dorsal view.

Head hypognathous. Vertex glabrous with one supraorbital pore on each side near eye. Antennal calli well delimited. Supracallinal, midfrontal, supraantennal and suprafrontal sulci shallow and weak. Supraorbital and orbital sulci deep. Width of frontal ridge to antennal sockets (measured excluding 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: 1.90–2.00. Anterior margin of labrum slightly convex.

Proportions of antennomeres as follows: 11:6:6:7:9:9:13:13:15:15:20. Length to width ratio of antennomere 9: 2.12–2.22; antennomere 10: 2.10–2.20; antennomere 11: 2.70–2.80.

Pronotum with minute, distantly scattered punctures. Lateral margins of pronotum slightly curved, posterior margin weakly sinuate. Anterolateral callosity weak, protruding antero-laterally; posterolateral callosity poorly developed.

Elytra with lateral sides almost parallel, punctures confused near sides, somewhat regular in middle.

Length (excluding trochanter) to maximum width ratio of metafemur: 2.30–2.40. First protarsomere of male, length to width ratio (in dorsal view): 1.15–1.20. First metatarsomere of male, length to width ratio (in dorsal view): 1.57–1.62. Length of first metatarsomere to length of second metatarsomere ratio: 1.33–1.38.

Aedeagus short and robust. In lateral view, aedeagus almost straight with apical denticle slightly bent dorsally. In ventral view, sides of aedeagus nearly parallel, with apex narrowing abruptly.

Spermathecal receptacle about three times longer than maximum width; inner side apparently concave in middle, outer side almost straight, proximally narrower than distally. Spermathecal pump shorter than receptacle, horizontal part longer than vertical, apex rounded. Posterior sclerotization of tignum strongly expanded, spatulate, with concave posterior margin. Vaginal palpi together a little longer than wide, separated at base and apex, entirely fused with each other at middle. The distal part of vaginal palpi broad and round.

Types: Holotype: ♂, labels: 1) China, Yunnan, env. Dali, Cangshan Mts. , 06.IV.2002, 3700 – 3500m, forest/ trail, N25°41'06'', E100°06'13'', leg. A. Konstantinov & M. Volkovitsh, 2) Holotype, Meishania flavipennis n. sp. des Konstantinov & Ruan, 2016 (IZCAS).

Paratypes: 1♂ 3♀, China, Yunnan, env. Dali, Cangshan Mts. , 06.IV.2002, 3700– 3500m, forest/trail, N25°41'06'', E100°06'13'', leg. A. Konstantinov & M. Volkovitsh, Paratype, Meishania flavipennis n. sp. des Konstantinov & Ruan, 2016 ( USNM).

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

Figures

FIGURE 4. Meishania flavipennis sp. nov. A: habitus (Holotype, male). B: aedeagus, ventral view (Holotype). C: apex of aedeagus, dorsal view (Holotype). D: aedeagus, dorsal view (Paratype). E: aedeagus, lateral view (Paratype). F: tignum (Paratype). G: spermatheca (Paratype). H: vaginal palpi (Paratype). I: pygidium of female (Paratype). J: prothorax, dorsal view (Holotype).K: prothorax, dorsal view (Paratype).L: head, frontal view (Paratype). M: head, frontal view (Holotype).