Macrolycus curtus Y. Yang, Liu & X. Yang, 2024

Du, Ruolan, Yang, Yuxia, Yang, Xingke & Liu, Haoyu, 2024, Five new species of the Macrolycus ligulatus species-group from China (Coleoptera, Lycidae), ZooKeys 1208, pp. 315-330 : 315-330

publication ID	https://doi.org/ 10.3897/zookeys.1208.125938
publication LSID	lsid:zoobank.org:pub:48F428DA-4F53-4B37-AA3A-608A19B5F7D4
DOI	https://doi.org/10.5281/zenodo.13151674
persistent identifier	https://treatment.plazi.org/id/D315E9DC-6731-4A7A-9578-927ED25DAD3D
taxon LSID	lsid:zoobank.org:act:D315E9DC-6731-4A7A-9578-927ED25DAD3D
treatment provided by	ZooKeys by Pensoft
scientific name	Macrolycus curtus Y. Yang, Liu & X. Yang
status	sp. nov.

Treatment

Macrolycus curtus Y. Yang, Liu & X. Yang sp. nov.

Figs 6 J – L View Figure 6 , 7 C, D View Figure 7

Diagnosis.

The species resembles M. costus sp. nov. in the short apical part (1 / 10 length) and fusiform ventral-cavity of phallus, but differs in the weak elytral costa III (Fig. 7 C View Figure 7 ) (strong in M. costus sp. nov.; Fig. 5 C View Figure 5 ); phallus relatively stout and curved laterally at basal 1 / 4 portion in dorsal and ventral views (Fig. 6 J – K View Figure 6 ) (slender and almost straight at basal part in dorsal and ventral views in M. costus sp. nov. (Fig. 6 D – F View Figure 6 ).

Etymology.

The specific name is derived from the Latin curtus (short), referring to the short apical part of its phallus.

Type material.

Holotype. China: ♂ ( IZAS), Gansu, Kangxian, Qinghe Forestry , 1400 m, 8. vii. 1999, leg. J. Yao. Paratype. 1 ♀ ( IZAS), same data as holotype .

Description.

Male (Fig. 7 C View Figure 7 ). Length 11.5 mm, width at humeri 2.4 mm.

Body black. Pronotum dark red with a square black patch in the center of the disc, elytra and scutellum dark red. Surface covered with decumbent red pubescence (Fig. 7 C View Figure 7 ).

Eyes small, interocular distance about 1.9 times greater than eye diameter. Antennae flabellate, overlapping basal 2 / 3 length of elytra when inclined. Antennomeres III – XI lamellate, lamellae of III and IV apically rounded and V – XI pointed at apices, lamella of III 0.6 times as long as joint itself, lamella of IX longest, 3.4 times longer than joint itself (Fig. 7 C View Figure 7 ).

Pronotum square, 1.2 times wider than long. Anterior margin widely rounded, and feebly projecting anteriad, lateral margins sinuate and posterior margin almost straight; anterior angles rounded, posterior angles sharp and moderately projected. Scutellum trapezoidal, feebly emarginate at apex (Fig. 7 C View Figure 7 ).

Elytra 4.0 times longer than humeral width. Costae I and II as strong as IV, and III visible only basally (Fig. 7 C View Figure 7 ).

Phallus slender (Fig. 6 J – L View Figure 6 ), basal part parallel-sided and curved laterally at basal 1 / 4 portion in dorsal and ventral views (Fig. 6 J, K View Figure 6 ), subapical part moderately and asymmetrically inflated laterally, about 1.9 times as wide as basal part, with a fusiform ventral-cavity, apical part constricted distad, apex with a shallow V-shaped notch, about 0.47 times as wide as subapical part; basal 1 / 3 part moderately curved ventrally in lateral view (Fig. 6 L View Figure 6 ), subapical part flat ventrally, apical part short and moderately expanded ventrally, with a tapered lamella.

Female (Fig. 7 D View Figure 7 ). Similar to male, but larger in body size. Length 21.2 mm, width at humeri 5.4 mm. Antennae serrate and shorter, overlapping elytral mid-length when inclined. Pronotum 1.3 times wider than long. Elytra 3.3 times longer than humeral width.

Distribution

(Fig. 2 View Figure 2 ). China (Gansu).