taxonID	type	description	language	source
556987F9FF9FFFDC5A3F0CB7FE627387.taxon	diagnosis	Diagnosis Male antennomeres III usually triangular, seldom lamellate or cylindrical. Elytra elongate, with lateral margins feebly to moderately, but never strongly diverging posteriorly. Aedeagus with phallus never notched at apex, but attached with a circular lamellar structure (e. g., Figs 2 A – C, 3). Included species M. aurantiacus Kazantsev, 2001, M. baihualingensis Li, Bocak & Pang, 2015, M. gracilis Pic, 1923, M. lizipingensis Li, Bocak & Pang, 2015, M. mucronatus Li, Bocak & Pang, 2012, M. multicostatus Kazantsev, 2002, M. muyuensis Li, Bocak & Pang, 2012, M. phoeniceus Li, Bocak & Pang, 2015, M. rhodoneurus Li, Bocak & Pang, 2015, and M. rosaceus Li, Bocak & Pang, 2015. Distribution (Fig. 1) China, Laos, and Vietnam.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF9EFFDB59930FD1FB9D715F.taxon	description	Figs 1 – 2	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF9EFFDB59930FD1FB9D715F.taxon	materials_examined	Material examined CHINA • 2 ♂♂; Guangxi, Longsheng, Huaping, Anjiangping; 2 Jun. 2023; H. Q. Lin and S. L. Yuan leg.; MHBU • 1 ♂; Hubei, Shennongjia, Wenshui Forestry; 17 Jul. 2003; F. Lin leg.; IZAS. Descriptive notes Male (Fig. 2 D) AEDEAGUS. Phallus slender, nearly parallel-sided at basal part in dorsal and ventral views (Fig. 2 A – B), subapical part strongly and almost symmetrically inflated laterally, about 1.8 × as wide as basal part, with ventral, fusiform cavity, apical part abruptly narrowed distad, apex about 0.22 × as wide as subapical part; curved ventrally at basal ¼ portion, and bent dorsally at apical 3 / 8 portion in lateral view (Fig. 2 C), subapical part moderately inflated ventrally, apical part nearly straight and feebly inflated ventrally near apex.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF9EFFDB59930FD1FB9D715F.taxon	distribution	Distribution China (Guangxi, Hubei, Hunan).	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF9EFFDB59930FD1FB9D715F.taxon	discussion	Remarks The external appearance of this species was described well in the original publication (Li et al. 2012), but the aedeagus was simply described and illustrated only in lateral and ventral views. Here, the material of this species is available for us, which makes it possible to provide a detailed description and illustrations of the aedeagus, to make better comparison with the new species below.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF99FFD959B50DA7FE7C7427.taxon	description	Figs 1, 3 A – C, 4 A – B	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF99FFD959B50DA7FE7C7427.taxon	diagnosis	Diagnosis This species can be separated from other species of the M. gracilis group by a characteristic aedeagus with moderately robust phallus, which is nearly parallel-sided in the basal part in all views (Fig. 3 A – C). The species most closely resembles M. aurantiacus Kazantsev, 2001 in the triangular antennomere III, but can be easily distinguished from the latter by the black pronotum and dark red elytra, while both pronotum and elytra are orange in M. aurantiacus; phallus almost even in width in apical part in lateral view (Fig. 3 C), and abruptly narrowed distad in M. aurantiacus (Kazantsev 2001: fig. 9).	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF99FFD959B50DA7FE7C7427.taxon	etymology	Etymology The specific epithet is derived from the Latin ‘ niger ’ (‘ black’) and ‘ collum ’ (‘ neck’), referring to its uniformly black pronotum.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF99FFD959B50DA7FE7C7427.taxon	materials_examined	Type material Holotype CHINA • ♂; Zhejiang, Fengyangshan, Ludai; 1123 m a. s. l.; 3 May 2021; Y. Kang and X. X. Wang leg.; HBU (E) 410056; MHBU. Paratypes CHINA • 1 ♂; Zhejiang, Tianmushan, Dahenglu; 1200 m a. s. l.; 6 Jun. 1998; M. S. Zhao leg.; IOZ (E) 2058406; IZAS • 1 ♂; Fujian, Chongan, Xingcun, Road of Sangang to Jianyang, Aotou; 740 – 1170 m a. s. l.; 20 May 1960; C. L. Ma leg.; IOZ (E) 1119994; IZAS • 1 ♀; Fujian, Chongan, Xingcun, Sangang; 740 m a. s. l.; 25 May 1960; Y. R. Zhang leg.; IOZ (E) 1120123; IZAS.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF99FFD959B50DA7FE7C7427.taxon	description	Description Male (Fig. 4 A) MEASUREMENTS. Length 7.8 – 10.0 mm (8.7 mm in holotype), width at humeri 1.7 – 2.3 mm (1.9 mm in holotype). HABITUS AND COLORATION. Body black brown. Pronotum and scutellum black, elytra dark red. Surface covered with decumbent red pubescence. HEAD. Eyes small, interocular distance about 1.7 × as long as eye diameter. Antennae flabellate starting from antennomeres IV, overlapping basal ⅔ length of elytra when inclined. Antennomere III triangular and feebly longer than wide, IV ‒ XI lamellate, lamellae pointed at apices, lamella of IV as half long as joint itself, lamella of IX longest, 3.3 × as long as joint itself (Fig. 4 A). PRONOTUM. Trapezoidal, 1.2 × as wide as long. Anterior margin widely rounded, lateral margins feebly sinuate and posterior margin bisinuate; anterior angles rounded, posterior angles sharp and feebly projected. Scutellum trapezoidal, emarginate at apex (Fig. 4 A). ELYTRA. 3.8 × as long as humeral width. Costa I weak but visible in whole length, costa IV as strong as II and both separated terminally, costa III visible only at the basal half part (Fig. 4 A). AEDEAGUS. Phallus slender, nearly parallel-sided at basal part in dorsal and ventral views (Fig. 3 A – B), subapical part moderately and asymmetrically inflated laterally, about 1.45 × as wide as basal part, with ventral, fusiform cavity, apical part gradually narrowed distad, apex about 0.38 × as wide as subapical part; curved ventrally at basal 2 / 7 portion, and bent dorsally at apical 5 / 14 portion in lateral view (Fig. 3 C), subapical part moderately inflated ventrally, apical part nearly straight and flat near apex. Female (Fig. 4 B) Similar to males, but larger in body size. Antennae serrate and shorter, reaching elytral midlength when inclined, antennomere III feebly widened apically, about 2.5 × as long as wide. Pronotum narrower, 1.1 × as wide as long. Elytral costa II stronger than IV and both fused then split terminally at apical part of elytra. Variation within type series Pronotum of some specimens has the posterior margin straight.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF99FFD959B50DA7FE7C7427.taxon	distribution	Distribution China (Zhejiang, Fujian).	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF9BFFD759B80858FE1F7360.taxon	description	Figs 1, 3 D – F, 4 D – E	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF9BFFD759B80858FE1F7360.taxon	diagnosis	Diagnosis This species can be easily distinguished from all others of the M. gracilis group by the male antennae with extremely slender branches on antennomeres III ‒ X (Fig. 4 D). The species more resembles M. gracilis Pic, 1923 in the presence of lamella on antennomere III, but differs in the following characters: longer antennae, overlapping basal ¾ length of elytra when inclined, lamella of antennomere III shorter, 0.7 × as long as joint itself; black pronotum; apical part of phallus gradually narrowed distad in ventral view (Fig. 3 E). In comparison, in M. gracilis, the antennae are shorter, at most reaching basal ⅔ length of elytra, lamella of antennomere III is longer, as long as joint itself; pronotum is orange; apical part of the phallus is parallel-sided at apical 1 / 5 portion in ventral view (Li 2015: fig. 7 u).	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF9BFFD759B80858FE1F7360.taxon	etymology	Etymology The specific epithet is derived from the Latin ‘ gracilis ’ (‘ slender’) and ‘ ramus ’ (‘ branch’), referring to the slender lamellae on male antennomeres III ‒ X.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF9BFFD759B80858FE1F7360.taxon	materials_examined	Type material Holotype CHINA • ♂; Guangxi, Longsheng, Huaping, Anjiangping; 4 Jun. 2023; H. Q. Lin and S. L. Yuan leg.; HBU (E) 410057; MHBU. Paratypes CHINA • 2 ♂♂; same data as for holotype; HBU (E) 410059 to 410060; MHUB • 2 ♀♀; same data as for holotype; HBU (E) 410061 to 410062; MHUB • 1 ♀; same data as for holotype; 2 Jun. 2023; HBU (E) 410063; MHBU.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF9BFFD759B80858FE1F7360.taxon	description	Description Male (Fig. 4 D) MEASUREMENTS. Length 10.0 – 10.6 mm (10.6 mm in holotype), width at humeri 2.1 – 2.4 mm (2.4 mm in holotype). HABITUS AND COLORATION. Body black brown. Pronotum and scutellum black, elytra dark red. Surface covered with decumbent red pubescence. HEAD. Eyes small, interocular distance about 1.8 × as long as eye diameter. Antennae flabellate starting from antennomeres III, overlapping basal ¾ length of elytra when inclined. Antennomeres III ‒ XI lamellate, lamellae pointed at apices, lamella of III 0.7 × as long as joint itself, lamella of VIII longest, 3.4 × as long as joint itself (Fig. 4 D). PRONOTUM. Trapezoidal, 1.1 × as wide as long. Anterior margin widely rounded and projecting anteriad, lateral margins feebly sinuate and posterior margin straight; anterior angles rounded, posterior angles sharp and moderately projected. Scutellum trapezoidal, nearly straight at apex (Fig. 4 D). ELYTRA. 3.8 × as long as humeral width. Costa I weak but visible at basal ⅔ length, costa II stronger than IV and both separated terminally at apical part of elytra, costa III visible only at the basal ¼ part (Fig. 4 D). AEDEAGUS. Phallus slender, nearly parallel-sided at basal part in dorsal and ventral views (Fig. 3 D – E), subapical part strongly and almost symmetrically inflated laterally, about twice as wide as basal part, with an oval ventral-cavity, apical part gradually narrowed distad, apex about 0.25 × as wide as subapical part; curved ventrally at basal ⅓ portion, and bent dorsally at apical 4 / 7 portion in lateral view (Fig. 3 F), subapical part feebly inflated ventrally, apical part slightly inclined dorsally and flat near apex. Female (Fig. 4 E) Similar to males, but larger in body size. Antennae serrate and shorter, reaching elytral midlength when inclined. Pronotum wider, 1.2 × as wide as long, anterior angles obtuse-angled. Elytra wider and 3.6 × as long as humeral width, costa II much stronger than IV and both fused terminally at apical part of elytra.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF9BFFD759B80858FE1F7360.taxon	distribution	Distribution China (Guangxi).	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF95FFD6598F0F83FEF9746C.taxon	description	Figs 1, 3 G – I, 4 C	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF95FFD6598F0F83FEF9746C.taxon	diagnosis	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. 4 C), and very robust but uneven phallus (Fig. 3 G – I).	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF95FFD6598F0F83FEF9746C.taxon	etymology	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.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF95FFD6598F0F83FEF9746C.taxon	materials_examined	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.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF95FFD6598F0F83FEF9746C.taxon	description	Description Male (Fig. 4 C) 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. 4 C). 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. 4 C). 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. 4 C). AEDEAGUS. Phallus stout, expanded to one side at basal part in dorsal and ventral views (Fig. 3 G – H), 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. 3 I), subapical part flat, apical part slightly inclined dorsally and feebly inflated ventrally near apex. Female Unknown.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF95FFD6598F0F83FEF9746C.taxon	distribution	Distribution China (Hubei).	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF94FFD359B30896FAE37074.taxon	description	Figs 1, 3 J – L, 4 F	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF94FFD359B30896FAE37074.taxon	diagnosis	Diagnosis This species can be distinguished from the remaining species of the M. gracilis group by the antennomere III with slender and short lamella, 0.7 × as long as joint itself. It is more similar to M. mucronatus Li, Bocak & Pang, 2012, but can be differentiated by the antennomere III with slender lamella, 0.7 × as long as joint itself; apical part of the phallus gradually narrowed distad in ventral view (Fig. 3 K), and subapical part inflated ventrally in lateral view (Fig. 3 L). Unlikely, in M. mucronatus, the antennomere III is stouter, with lamella about half length of joint itself; apical part of the phallus is abruptly narrowed distad in ventral view (Li et al., 2012: fig. 38), and subapical part flat in lateral view (Li et al., 2012: fig. 37).	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF94FFD359B30896FAE37074.taxon	etymology	Etymology The specific epithet is derived from the Latin ‘ acutus ’ (‘ sharp’) and ‘ apex ’ (‘ tip’), referring to its lamella of antennomere III with pointed apex.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF94FFD359B30896FAE37074.taxon	materials_examined	Type material Holotype CHINA • ♂; Hubei, Xingshan, Longmenhe; 2200 m a. s. l.; 13 Jun. 1995; S. Y. Wang leg.; IOZ (E) 1119901; IZAS.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF94FFD359B30896FAE37074.taxon	description	Description Male (Fig. 4 F) MEASUREMENTS. Length 7.3 mm, width at humeri 1.6 mm. HABITUS AND COLORATION. Body black brown. Pronotum, elytra and scutellum dark red. Elytral costae IV orange-red. Surface covered with decumbent red pubescence. HEAD. Eyes small, interocular distance about 1.7 × as long as eye diameter. Antennae flabellate, overlapping basal ⅔ length of elytra when inclined. Antennomeres III ‒ XI lamellate, lamellae pointed at apices, lamella of III extremely slender, about 0.7 × as long as joint itself, lamella of IX longest, 4.2 × as long as joint itself (Fig. 4 F). PRONOTUM. Trapezoidal, 1.3 × as wide as long. Anterior margin widely rounded, lateral margins obviously sinuate and posterior margin nearly straight; anterior angles confluent with anterior margin, posterior angles sharp and moderately projected. Scutellum trapezoidal, nearly straight at apex (Fig. 4 F). ELYTRA. Slender and subparallel-sided, 3.9 × as long as humeral width. Costae I and III weak but visible at whole length, costa IV weaker than II and both separated at apical part of elytra (Fig. 4 F). AEDEAGUS. Phallus slender, with basal part narrowed to middle in dorsal and ventral views (Fig. 3 J – K), subapical part strongly and almost symmetrically inflated laterally, about 1.67 × as wide as basal part, with an oval ventral-cavity, apical part gradually narrowed distad, apex about 0.25 × as wide as subapical part; curved ventrally at basal 5 / 16 portion, and bent dorsally at apical 7 / 16 portion in lateral view (Fig. 3 L), subapical part feebly inflated ventrally, apical part nearly straight and flat ventrally. Female Unknown.	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
556987F9FF94FFD359B30896FAE37074.taxon	distribution	Distribution China (Hubei).	en	Du, Ruolan, Yang, Yuxia, Yang, Xingke, Liu, Haoyu (2025): Taxonomic study of the Macrolycus gracilis group (Coleoptera: Lycidae), with descriptions of four new species from China. European Journal of Taxonomy 981: 265-279, DOI: 10.5852/ejt.2025.981.2825, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2825/12885
