Macrolycus jeanvoinei Pic, 1935

Macrolycus jeanvoinei Pic, 1935: 112; Kazantsev (1993b: 50). Macrolycus inaequalis var. jeanvoinei Pic, 1935: 112 .

Macrolycus salvazai Pic, 1942: 5; Nakane (1967: 73); Kazantsev (1993b: 50).

Material examined. Laos, 10 males, NE Laos, Phou Pan Mt. 1300–1900 m, 1.–15. v. 2010, C. Holzschuh (LMBC, SYSM).

Distribution. Vietnam, Laos.

Macrolycus ligulatus sp. nov. (Figs 23, 33, 34, 48)

Type material. Holotype, male, NE Laos, Phou Pan Mt. 1300–1900 m, 1.–15. v. 2010, C. Holzschuh (LMBC). Paratypes: 4 males, same data as the holotype (LMBC, SYSM).

Diagnosis. This species can be easily distinguished from other Macrolycus by the tongue-like structure at apex of the median lobe and the triangular antennomere 3 (Figs 34, 48).

Description (holotype). Body medium-sized, dark brown, pronotum and elytra uniformly orange (Fig. 23). Head small, with inconspicuous antennal tubercles. Antennae overlapping two thirds of elytra when inclined, antennomere 3 triangular, without prominent lamella (Fig. 48); antennomeres 4–11 lamellate. Pronotum transverse, anterior margin slightly protruding forward; lateral margin elevated, curved. Anterior angles obtuse, posterior angles acutely projected (Fig. 23). Elytra covered with orange pubescence, slightly wider in subhumeral area; elytral costa 2 stout, other three weaker than costa 2; costal interstices with irregular punctures. Aedeagus slender, without paramerae; subapical part of aedeagus swollen; apex of aedeagus moderately expanded ventrally, bearing decumbent tongue-like lamella (Figs 33, 34).

Measurements. Length 10.20 mm, width at humeri 2.15 mm, pronotum length/width 1.90/2.00 mm.

Distribution. Laos, known only from the type locality.

Etymology. The specific name refers to the apical structure of the aedeagus.

Macrolycus luteus sp. nov. (Figs 30, 35, 36, 49)

Type material. Holotype, male, China, Guizhou province, Leigongshan, Xijiang, 1200–1900 m, 29. v.–2. vi. 1997, Bolm (LMBC). Paratype: 1 female, same label data as the holotype (SYSM).

Diagnosis. This species is similar to M. bowringi, but can be differed by orange-brown coloration and the shape of the pronotum and elytra (Fig. 30). Its aedeagus has more robust median lobe than M. bowringi, the subapical part of which is strongly inflated, lateral surface bears a ridge rising from the base of the median lobe (Figs 35, 36).

Description (holotype). Body large, dark brown, pronotum and elytra yellow-brown (Fig. 30). Head with inconspicuous antennal tubercles. Antennae overlapping two thirds of elytra when inclined, antennomeres 3–11 lamellate, lamellae apically obtuse (Fig. 49). Pronotum transverse, with prominent posterior angles and transverse rib; anterior margin slightly projected, minutely emarginate in middle; lateral margins strongly curved, posterior margin almost straight (Fig. 30). Scutellum black, narrower, slightly emarginate posteriorly. Elytra leaf-like, widened posteriorly, constricted at posterior fourth, apically acute, covered with dense, decumbent yellow pubescence, bearing 4 conspicuous orange-yellow costae: costa 2 and 4 much stouter and elevated. Interstices brown, punctured. Aedeagus with paramerae; subapical part of median lobe inflated in lateral view; apex of median lobe with two minute processes; paramerae robust, constricted apically (Figs 35, 36).

Measurements. Length 16.50 mm, width at humeri 3.70 mm, pronotum length/width 2.45/3.00 mm.

Distribution. China (Guizhou), known only from the type locality.

Etymology. The specific name refers to the yellow brown coloration.

Macrolycus mucronatus sp. nov. (Figs 27, 37, 38, 50)

Type material. Holotype, male, China, Guangxi province, Miaoershan, S slope, 1300–2000 m, Bolm, 25.–26. vi. 1997 (LMBC). Paratype: 1 female, same label data as the holotype (SYSM).

Diagnosis. This species is characterized by the acute lamella of the antennomere 3 (Fig. 50). It differs from M. gracilis by the shape of the pronotum and antennomeres, and the erect apical lamina of the aedeagus, in contrast to ventrally inclined lamina in M. gracilis (Figs 27, 37, 50). It can also be distinguished from M. multicostatus by the slenderer apical part of the median lobe and lamellate antennomeres 3–11 (Figs 38, 50).

Description (holotype). Body medium-sized, dark brown, pronotum and elytra dark red (Fig. 27). Head small, with inconspicuous antennal tubercles, antennae overlapping four fifths of elytral length when inclined, antennomere 3 with short acute lamella (Fig. 50). Pronotum with anterior edge protruding anteriad and acutely projected posterior angles (Fig. 27). Scutellum dark brown, parallel-sided, with straight posterior margin. Elytra almost parallelsided, as wide as pronotum at humeri. Elytral costa 2 much stouter than other ones, costa 3 inconspicuous. Costal interspaces irregularly punctured, covered with short, decumbent pubescence. Median lobe slender, moderately curved at basal third; subapical part wider, abruptly constricted distad; apical part of median lobe tube-shaped, with prominent rounded lamella (Figs 37, 38).

Measurements. Length 11.30 mm, width at humeri 2.30 mm, pronotum length/width 1.80/1.90 mm.

Distribution. China (Guangxi), known only from the type locality.

Etymology. The specific epithet refers to the shape of antennal lamellae.