Macrolycus breviramus Y. Yang, Du & Liu, 2025

Macrolycus breviramus Y. Yang, Du & Liu sp. nov.

urn:lsid:zoobank.org:act:042B1564-6E58-4915-BF4C-A5C933F5040F

Figs 1 View Fig , 3G–I View Fig , 4C View Fig

Diagnosis

This species can be easily distinguished from all others of the M. gracilis group by the cylindrical antennomere III, orange red margins of pronotum and elytra ( Fig. 4C View Fig ), and very robust but uneven phallus ( Fig. 3G–I View Fig ).

Etymology

The specific epithet is derived from the Latin ‘ brevis ’ (‘short’) and ‘ ramus ’ (‘branch’), referring to its short antennal lamellae on male antennomeres VI‒X.

Type material

Holotype

CHINA • ♂; Hubei, Shennongjia, Pingqian, Baiwawu ; 1350 m a.s.l.; 2 Jul. 2022; J.B. Tong and X.Y. Ge leg.; HBU(E)410058; MHBU.

Description

Male ( Fig. 4C View Fig )

MEASUREMENTS. Length 8.7 mm, width at humeri 2.0 mm.

HABITUS AND COLORATION. Body black brown. Pronotum and elytra dark red, with red margins. Scutellum black. Surface covered with decumbent red pubescence.

HEAD. Eyes small, interocular distance about 1.6 × as long as eye diameter. Antennae flabellate starting from antennomeres VI, overlapping basal ⅔ length of elytra when inclined.Antennomere III cylindrical, IV long-triangular, about 2× as long as wide, V wide-triangular, feebly longer than wide, VI‒XI lamellate, with lamellae acute at apices, lamella of IX longest, 2× as long as joint itself ( Fig. 4C View Fig ).

PRONOTUM. Square, 1.1× as wide as long. Anterior margin widely rounded and projecting anteriad, lateral margins feebly sinuate and posterior margin nearly straight; anterior angles obtuse-angled, posterior angles sharp and moderately projected. Scutellum trapezoidal, nearly straight at apex ( Fig. 4C View Fig ).

ELYTRA. 3.8 × as long as humeral width. Costa I weak but visible at basal ⅔ length; costa III visible only at the base; costa II stronger than IV and both fused terminally at apical part of elytra ( Fig. 4C View Fig ).

AEDEAGUS. Phallus stout, expanded to one side at basal part in dorsal and ventral views ( Fig. 3G–H View Fig ), subapical part moderately and asymmetrically inflated laterally, about 1.25× as wide as basal part, with an oblong ventral-cavity, apical part gradually narrowed distad, apex about 0.20 × as wide as subapical part; curved ventrally at basal 5 / 14 portion, and bent dorsally at apical ⅓ portion in lateral view ( Fig. 3I View Fig ), subapical part flat, apical part slightly inclined dorsally and feebly inflated ventrally near apex.

Female

Unknown.

Distribution

China (Hubei).