Miccolamia liubini Bi & Chen, 2025

Bi, Wen-Xuan, Chen, Chang-Chin & Lin, Mei-Ying, 2025, A revision of the genus Miccolamia Bates from China (Coleoptera, Cerambycidae, Lamiinae, Desmiphorini), ZooKeys 1264, pp. 1-35 : 1-35

Miccolamia liubini Bi & Chen sp. nov.

Figs 38 , 42 , Map 1 Chinese common name: 刘彬小沟胫天牛

Type material.

Holotype: • female, “ CHINA. Hainan, Ledong / Jianfengling / 1,412 m, 2017. VII. 13 / leg. Bin Liu ” ( SNUC).

Description.

Female (Fig. 22 ). BL = 4.62, BW = 1.52 mm. Vertex of head, apical half of antennomeres III – XI, middle 1 / 3 of pronotum, basal half of femora, midlength to apical 1 / 4 of tibiae and tarsi brown to dark brown; remaining parts orangish; elytra mostly brownish, except for light brown longitudinal stripe between subbasal tubercles on basal half; ventral surface blackish. Head moderately covered with intermixed yellowish and tawny pubescence; antennae with sparse yellowish hairs on entire scape and ringed on the bases of antennomeres III – XI; pronotum clothed with similar pubescence to head, except for glabrous inverted triangle-shaped area, ~ 1 / 3 maximum pronotal width, slightly behind midlength; scutellum densely covered with yellowish hairs on posterior half; elytra with appressed yellowish and tawny pubescence forming longitudinal band on basal half, gradually becoming lighter posteriorly, remaining area mottled with pale to yellowish pubescent maculae throughout, except for a few tufts of short suberect setae arranged on the tips of the tubercles forming blackish spots mainly on apical half, disk with the long suberect setae blackish dorsally and yellowish laterally; legs and ventral surface moderately covered with fine yellowish pubescence, relatively denser on ventral surface of femora distally.

Head slightly wider than pronotal anterior margin, shallowly concave on frons and between antennal tubercles; frons densely and finely punctate. Eyes deeply emarginated, upper and lower eye lobes connected by 1 row of ommatidia; lower eye lobe ~ 1.7 × as long as wide, 1.4 × as long as gena. Antennae stout, AL / BL = 1.1; scape strongly clavate, densely and finely punctate, antennomere III 0.9 × as long as IV, 1.2 × as long as scape, 1.3 × as long as antennomere V.

Pronotum 0.9 × as long as width across lateral tubercles, 1.2 × as long as basal width; distinctly constricted near apical 1 / 3 and basal 1 / 4 (each with deep groove); lateral tubercles situated near midlength, thickened at base with short acute apices; disk smooth, slightly rugose on the glabrous area, weakly convex, provided with three tubercles arranged as inverted triangle, of which the anterior two are moderately large and prominent and the posterior one is flattened and indistinct, also with scattered large setigerous punctures on middle 1 / 3.

Elytra elongate, EL / EW = 2.0, EL / PL = 2.9, subparallel-sided on basal 1 / 3, gently dilated near apical 2 / 5, then convergent toward conjointly rounded apices; weakly convex near apical 1 / 3 in lateral view (Fig. 38 ); humeri broadly rounded. Each elytron provided with a moderate subbasal tubercle, entirely covered with short setae, and several smaller tubercles, similarly setose, scattered mainly on apical half, approximately forming two longitudinal rows, the sutural ones larger; disk also with deep and coarse punctures forming six longitudinal rows, partially extending to apical 1 / 3. Ventral surface finely punctate. Legs moderately long and thick; protibiae distinctly thickened near apical 1 / 3 externally; metatibiae hardly exceeding elytral apices; tarsal claws appendiculate (Fig. 42 ).

Male. Unknown.

Remarks.

This new species can be readily recognized from the congeners by a combination of the following characters: pronotum with distinct anterior and posterior constrictions and deep grooves; pronotal disk with a pair of distinct tubercles; integument of elytra without dark-colored portion; elytral disk provided with several small additional tubercles mainly on apical half; and tarsal claws appendiculate.

Notably, this species combines two key characters previously used to define separate subgenera: multi-tuberculate elytra (characteristic of Isomiccolamia) and appendiculate tarsal claws (diagnostic for Miccolamia s. str.) ( Hasegawa and Ohbayashi 2001). This challenges the current subgeneric classification, prompting us to refrain from applying subgeneric division to avoid taxonomic confusion.

Etymology.

The new species is named after Mr. Bin Liu, who collected the holotype.

Distribution

(Map 1 ). China: Hainan.

Figures

Map 1. Distribution of the species of Miccolamia from China.

Figures 25–43. Habitus of Miccolamia spp. 25, 26. Dorsal view; 27–40. Lateral view; 27–40. Fore tarsal claw in frontal view; 25, 26, 40. M. castaneoverrucosa Hayashi, 1974 from Taiwan; 27, 41. M. savioi Gressitt, 1940; 28. M. mystica sp. nov.; 29. M. minuta sp. nov.; 30. M. yanziae sp. nov.; 31. M. holzschuhi sp. nov.; 32. M. tonsilis Holzschuh, 2010; 33. M. coenosa Holzschuh, 2010; 34. M. shennong sp. nov.; 35. M. panda sp. nov.; 36. M. binodosa Pic, 1935; 37. M. dracuncula Gressitt, 1942; 38, 42. M. liubini sp. nov.; 39, 43. M. tuberculipennis Breuning, 1947; 40. M. castaneoverrucosa Hayashi, 1974; 27–37, 39, 40. Male; 38. Female. Scale bar 50 μm (41–43), 25–40 not to scale.

Figures 13–24. Habitus of Miccolamia spp.; 13. M. coenosa Holzschuh, 2010 from Hubei; 14. M. shennong sp. nov. (holotype) from Hubei; 15, 16. M. panda sp. nov. from Sichuan (15 holotype, 16 paratype); 17, 18. M. dracuncula Gressitt, 1942 from Sichuan; 19, 20. M. dracuncula orientalis ssp. nov. from Zhejiang (19 holotype, 20 paratype); 21. M. binodosa Pic, 1935 from Yunnan; 22. M. liubini sp. nov. (holotype); 23, 24. M. tuberculipennis Breuning, 1947 from Zhejiang; 13–15, 17, 19, 21, 23. Male; 16, 18, 20, 22, 24. Female. Not to scale.