taxonID	type	description	language	source
CD5187B03D6BA46BFF33F8F34557FDD5.taxon	description	Definition. Body large-sized (12.5 ‒ 15.0 mm). All antennomeres filiform and simple in both sexes (Figs 2, 10). Pronotum transverse, wider than long, widest near posterior margin. Pro- and meso-femora weakly or moderately swollen (Figs 3, 4), prothoracic legs covered with more or less long hairs, and mesotrochanters with one or two small teeth in male (Fig. 4), while all simple in female. Terminal abdominal tergite of male with stout and horn-shaped postero-lateral projections (Figs 5 A ‒ D, 11 A ‒ B), about 1 / 2 to 2 / 3 length of the tergite, excavated longitudinally on ventral side, the excavations delimitated with arcuately keeled edges (Figs 5 A ‒ B, 11 A), sometimes covered with a pair of tufts of setae at apices. Terminal abdominal ventrite of male heart-shaped (Figs 5 E ‒ F, 11 C), surface present with two pairs of longitudinal ridges, of which the lateral ones arcuate and the middle ones nearly straight, both converging posteriorly; terminal abdominal ventrite of female (Fig. 8 E ‒ F) rounded at lateral margins. Proctiger bilobed, paraproct mostly invert-trapezoidal, with at least a pair of projections at lateral margins (Fig. 6 A ‒ C). Aedeagus (Figs 7, 12): left paramere widely acute or rounded at apex, right paramere usually with a small conical projection covered with seta on dorsal side, sometimes reduced and almost invisible; setiforous extension welldeveloped; median lobe about three times longer than tegmen.	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D6BA46BFF33F8F34557FDD5.taxon	distribution	Distribution (Fig. 1). China (Yunnan), Laos, Vietnam.	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D68A460FF33FA014527FC05.taxon	description	(Figs 2 A ‒ D, 3 A, 4 A, 5 A, C, E, 6 A, D, 7 A ‒ D, 8 A, C, E, 9 A)	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D68A460FF33FA014527FC05.taxon	materials_examined	Determined material examined. VIETNAM • 1 ♂ (NHMB), “ Hoa-Binh (Tonkin) / (A. de Cooman). / coll. J. Clermont ”, “ I. / macrurus / Gestro / det. W. Wittmer ”, “ 370 ”. Additional material examined. VIETNAM • 3 ♂♂ 5 ♀♀ (IZAS), “ Tonkin, Hoa Binh, leg. A. de. Cooman ”. CHINA • Yunnan: 1 ♀ (MHBU), Xishuangbanna, Tropical Botanical Garden, 10. VII. 2003, Xiaoli Liu & Hongzhu Liang leg.; 2 ♂♂ 1 ♀ (IZAS), Xishuangbanna, Xiaomengyang, 850 m, 7. VII. 1959, Lingchao Zang leg.; 1 ♀ (IZAS), Xishuangbanna, Xiaomengyang, 850 m, 10. VIII. 1959, Yiran Zhang leg.; 1 ♀ (IZAS), Xishuangbanna, Damengyang, 650 m, 26. VII. 1959, Yiran Zhang leg.; 1 ♂ (IZAS), Xishuangbanna, Mengxin, 550 m, 29. VI. 1959, Jianfu Li leg.; 1 ♀ (IZAS), Xishuangbanna, Mengxin, 550 m, 29. VI. 1959, Fuji Pu leg.; 2 ♂♂ 2 ♀♀ (IZAS), Xishuangbanna, Mengla, 620 - 650 m, 29. VI. 1959, Facai Zhang leg. LAOS. 1 ♀ (MHBU), Phoukhao NationBio, 29. VI. 2015, Haoyu Liu leg.	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D68A460FF33FA014527FC05.taxon	description	Re-description. Body length (both sexes): 12.5 ‒ 14.5 mm; body width (both sexes): 2.8 ‒ 3.0 mm. Male (Fig. 2 A, C). Coloration. Body black, head yellow before antennal sockets, antennomeres I ‒ II yellow; prosternum yellow, pronotum yellow with a pair of crescent-form brown spots in middle of disc, which sometimes reduced or conjoint in middle, scutellum yellow; elytra yellow at apices and or around humeri; legs yellow at coxae, trochanters, and ventral sides of profemora, sometimes also at basal parts of pro- and meta-femora. Eyes large, interocular distance about 0.8 times of an eye diameter. Antennae reaching posterior margin of abdominal tergite III, antennomere II about 1 / 3 length of I, III ‒ XI subequal in length and about 2.5 times longer than II. Pronotum 1.3 times wider than long, anterior margin strongly arcuate, laterally margins arcuate, posterior margin nearly straight, anterior angles subrounded, posterior angles nearly rectangular. Elytra 1.3 times longer than wide, about 2.5 times longer than pronotum, with lateral margins near straight, sutures sinuate and slightly dehiscent from base, distance between sutures feebly wider than apical width of an elytron, apices subrounded. Profemora (Fig. 3 A) slightly swollen, protibiae with long and suberected hairs ventrally; mesofemora (Fig. 4 A) hardly swollen. Terminal abdominal tergite (Fig. 5 A, C) about 1.6 times longer than wide, with postero-lateral projections about 3 / 5 length of the tergite, distinctly arcuate at both inner and outer margins, each covered with a tuft of long setae at apex. Proctiger (Fig. 6 A) completely surrounded by of paraproct; paraproct (Fig. 6 A) acute at latero-apical angles, bisinuately emarginate at dorso-posterior margin and widely and roundly emarginate at ventro-posterior margin, each side with two strong protrusions on lateral margins, of which one finger-like and situated near middle, the other beak-like and near bases, tergal flange moderately expanded at base and narrowly protruding apically. Terminal abdominal ventrite (Fig. 5 E) distinctly widened posteriorly, about 1.4 times as long as wide, bisinuately and shallowly emarginate at posterior margin, triangularly and shallowly emarginate in middle of anterior margin. Abdominal sternite IX (Fig. 6 D) moderately sclerotized and narrowed posteriorly, about 2.6 times longer than wide, with posterior margin obliquely truncate, posterior left angles subrounded and right angles widely triangular, anterior right angle stout beak-shaped and left angle strongly protruding anteriorly, slightly expanded and triangular at apex. Aedeagus (Fig. 7 A ‒ D): left paramere stout (Fig. 7 B, C), feebly longer than wide (Fig. 7 A, D); right paramere parallel-sided, about twice as long as wide, bifurcate at apex (Fig. 7 B, C), with inner branch progressively thinned apically and twice as long as outer branch, bearing a conical projection covered with seta on dorsal side (Fig. 7 A, D); setiforous extension stout, as long as left paramere, swollen at apex (Fig. 7 B, C); median lobe widely rounded at apex (Fig. 7 A, D). Female (Fig. 2 B, D). Similar to males, but body larger, eyes less protruding, prolegs without any long hairs, elytra less narrowed posteriorly; terminal abdominal tergite (Fig. 8 A, C) about 1.2 times longer than wide, with postero-lateral projections about half length of the tergite; terminal abdominal ventrite (Fig. 8 E) nearly as long as wide, widest near middle, bisinuately emarginated at posterior margin. Internal organ of the reproductive system (Fig. 9 A): accessory gland distinctly expanded apically.	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D68A460FF33FA014527FC05.taxon	distribution	Distribution. China (new record: Yunnan), Laos, Vietnam.	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D63A462FF33FBE64562F957.taxon	description	(Figs 3 B, 4 B, 5 B, D, F, 6 B, 7 E ‒ H, 10 A)	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D63A462FF33FBE64562F957.taxon	materials_examined	Type material examined. Holotype: 1 ♂ (MNHN), [p] “ MUSEUM PARIS / COCHINCHINE / MONT. DE CHAUDOC / HARMAND 1877 ”, [h] “ montanes de Chaudoc ”, [h] “ Ichthyurus / sp. ”, [h] “ Ichthyurus / major n. sp. / ♂ ”, [h] “ 500 / 77 ”, [p] “ HOLOTYPE ”. Additional material examined. CHINA • Yunnan: 1 ♂ (MHBU), Mengla, Mohan, 2 - 4. VIII. 2007, Guodong Ren, Wenjun Hou & Yalin Li leg.	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D63A462FF33FBE64562F957.taxon	description	Re-description. Body length: 13.8 mm; body width: 2.9 mm. Male (Fig. 10 A). Coloration. Body black, head yellow before antennal sockets, antennomeres I ‒ III yellow; prosternum yellow, pronotum yellow with a large black marking in center of disc; scutellum yellow; elytra yellow around humeri; legs yellow at coxae, trochanters, basal parts of femora. Eyes strongly protruding, interocular distance about half of an eye diameter. Antennae reaching posterior margin of abdominal tergite II, antennomere II about 1 / 4 length of I, III and VII ‒ XI subequal in length and about twice longer than II, IV ‒ VI subequal in length and about 3.0 times longer than III. Pronotum 1.3 times wider than long, anterior margin strongly arcuate, lateral margins feebly diverging posteriorly, posterior margin bisinuate, anterior angles feebly emarginate, posterior angles nearly rectangular. Elytra about 1.2 times longer than wide, twice longer than pronotum, with lateral margins feebly sinuate, sutures distinctly sinuate and strongly dehiscent from the basal 1 / 3 part, distance between sutures twice as wide as apical width of an elytron, apices rounded. Profemora (Fig. 3 B) slightly swollen, protibiae and basal parts of profemora covered with long and suberected hairs ventrally; mesofemora (Fig. 4 B) moderately swollen. Terminal abdominal tergite (Fig. 5 B, D) about 1.7 times longer than wide, with postero-lateral projections about half length of tergite, distinctly arcuate at both inner and outer margins, each with a tuft of short setae at apex. Proctiger (Fig. 6 B) extruding beyond paraproct; paraproct (Fig. 6 B) rectangular at latero-posterior angles, with a pair of beak-like projections on lateral margins, tergal flange (destroyed and missing). Terminal abdominal ventrite (Fig. 5 F) distinctly widened posteriorly, about 1.3 times as long as wide, largely and triangularly emarginate in middle of posterior margin, nearly truncate at anterior margin (Fig. 5 F). Abdominal sternite IX (destroyed and missing). Aedeagus (Fig. 7 E ‒ H): left paramere stout, twice longer than wide, rounded at apex (Fig. 7 E, H); right paramere slightly narrowed apically, feebly longer than left paramere, slightly bent inwards and acute at apex (Fig. 7 E, H); setiforous extension stout, feebly shorter than left paramere, swollen at apex (Fig. 7 E, F); median lobe with a club-like protrusion at apex, which longer than right paramere (Fig. 7 E, H).	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D63A462FF33FBE64562F957.taxon	distribution	Distribution. China (new record: Yunnan), Vietnam.	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D61A466FF33F911445BFCD9.taxon	description	(Figs 3 C, 4 C, 6 C, E, 8 B, D, F, 9 B, 10 B ‒ C, 11 A ‒ C, 12)	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D61A466FF33F911445BFCD9.taxon	materials_examined	Type material. Holotype. CHINA • Yunnan: ♂ (IZAS), Xishuangbanna, Menghun, 750 m, 6. VI. 1958, Yiran Zhang leg. Paratypes. CHINA • Yunnan: 1 ♀ (IZAS), Xishuangbanna, Menghun, 650 m, 15. VI. 1958, Yiran Zhang leg.; 1 ♂ 1 ♀ (IZAS), Xishuangbanna, Mengla, 620 - 650 m, 30. V. 1959, Yiran Zhang leg.; 1 ♀ (IZAS), Xishuangbanna, Mengla, 620 - 650 m, 24. V. 1959, Fuji Pu leg.; 1 ♀ (IZAS), Xishuangbanna, Mengla, 620 - 650 m, 2. VI. 1959, Fuji Pu leg.; 1 ♀ (IZAS), Xishuangbanna, Menghun, 600 - 800 m, 14. VI. 1958, Xuwu Meng leg.; 1 ♀ (IZAS), Kunming, Heilongtan, 1900 m, 18. IX. 1958, Xuwu Meng leg.; 1 ♀ (IZAS), Xishuangbanna, Menghun, 650 m, 15. VI. 1958, Chunpei Hong leg.; 1 ♀ (IZAS), Xishuangbanna, Menghun, 650 - 700 m, 13. VII. 1958, Chunpei Hong leg.; 1 ♂ (IZAS), Xishuangbanna, Xiaomengyang, 850 m, 11. VI. 1931, Shuyong Wang leg.	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D61A466FF33F911445BFCD9.taxon	diagnosis	Differential diagnosis. It can be easily distinguished from others by the coloration pattern of elytra (Fig. 10 B, C); terminal abdominal ventrite of male (Fig. 11 C) longer than wide; terminal abdominal tergite of male (Fig. 11 A, B) with postero-lateral projections feebly arcuate at both inner and outer margins, not covered with tufts of setae at apices; aedeagus with right paramere distinctly shorter than left paramere (Fig. 12 A, D), setiforous extension slender (Fig. 12 B, C).	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D61A466FF33F911445BFCD9.taxon	description	Description. Body length (both sexes): 12.7 ‒ 15.0 mm (14.3 mm in holotype); body width (both sexes): 1.9 ‒ 2.0 mm (1.9 mm in holotype). Male (Fig. 10 B). Coloration. Body black, head yellow before antennal sockets, antennomeres I ‒ II yellow; prosternum yellow, pronotum yellow with a large black marking; scutellum yellow; elytra with a yellow and wide X-form marking, extending across 2 / 3 part of disc; leg yellow at coxae, trochanters and basal parts of femora. Eyes strongly protruding, interocular distance about 0.6 times of an eye diameter. Antennae extending to posterior margin of abdominal tergite II, antennomere II about 1 / 4 length of I, III ‒ XI subequal in length and about 3.0 times longer than II. Pronotum 1.6 times wider than long, anterior margin moderately arcuate, lateral margins nearly parallel, posterior margin bisinuate, anterior angles feebly emarginate, posterior angles nearly rectangular. Elytra about 1.2 times longer than wide, about 1.8 times longer than pronotum, with lateral margins sinuate, sutures feebly sinuate and strongly dehiscent from the basal 1 / 3 part, distance between sutures as wide as apical width of an elytron, apices rounded. Profemora (Fig. 3 C) slightly swollen, protibiae and basal parts of profemora covered with slightly long and suberected hairs ventrally; mesofemora (Fig. 4 C) slightly swollen. Terminal abdominal tergite (Fig. 11 A, B) about 2.3 times longer than wide, with postero-lateral projections about 2 / 3 length of tergite, feebly arcuate at both inner and outer margins. Proctiger (Fig. 6 C) completely surrounded by paraproct; paraproct (Fig. 6 C) rectangular at latero-posterior angles, with a pair of beak-like projections on lateral margins, tergal flange weakly sclerotized. Terminal abdominal ventrite (Fig. 11 C) about 1.1 times as long as wide, largely and rectangularly emarginate in middle, with middle emargination as deep as 1 / 4 length of the ventrite and irregularly dentated along bottom and lateral margins. Abdominal sternite IX (Fig. 6 E) weakly sclerotized and tapered posteriorly, with anterior right angle small beak-shaped, left angle (destroyed and missing). Aedeagus (Fig. 12 A ‒ D): left paramere dorso-ventrally flattened, twice longer than wide (Fig. 12 A, D), acute at apex; right paramere slightly narrowed at apex, about 1 / 2 length of the left paramere, bent inwards and subrounded at apex (Fig. 12 A, D), bearing a conical projection covered with seta on dorsal side (Fig. 12 A); setiforous extension slender and nearly cylindrical, distinctly shorter than left paramere (Fig. 12 B, C); median lobe simple at apex (Fig. 12 D). Female (Fig. 10 C). Similar to males, but body larger, eyes less protruding, prothoracic legs without any long hairs, all femora uniformly black, elytra less narrowed posteriorly, yellow at base and apical 1 / 3 parts except for apices; terminal abdominal tergite (Fig. 8 B, D) about 1.5 times longer than wide, with lateral margins nearly parallel, postero-lateral projections about 2 / 5 length of the tergite; terminal abdominal ventrite (Fig. 8 F) 1.2 times longer than wide, almost truncated at posterior margin and acute at latero-apical angles. Internal organ of the reproductive system (Fig. 9 B): accessory gland even in width.	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D61A466FF33F911445BFCD9.taxon	etymology	Etymology. The specific name is derived from the Latin maculatus (to make spotted) and pennis (feather), referring to its black elytra with yellow markings.	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
CD5187B03D61A466FF33F911445BFCD9.taxon	distribution	Distribution. China (Yunnan).	en	Zhang, Wen-Wen, Wang, Ji-Liang, Hua, Jian-Xin, Yang, Xing-Ke, Yang, Yu-Xia (2026): Definition of the Ichthyurus macrurus species group (Coleoptera: Cantharidae), with description of a new species from Yunnan, China. Zootaxa 5757 (4): 339-356, DOI: 10.11646/zootaxa.5757.4.3, URL: https://doi.org/10.11646/zootaxa.5757.4.3
