Buprestis (Akiyamaia) wenii Qi & Song 2024, new species
Creators: name: Qi, Zhi-Hao
name: Su, Rong-Xiang
name: Liao, Zhi-Yu
name: Ai, Hong-Mu
name: Ding, Bi
name: Song, Hai-Tian
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Buprestis
Buprestis wenii

description: Buprestis (Akiyamaia) wenii Qi & Song, new species
(Chinese common name: £一吉丁)
Figs. 3D–F; 4K–T; 5G–H
Type locality. Vietnam, Yen Bai Province, Mu Cang Chai District.
Type material. Holotype: ♀ (FAF), VIETNAM, Yen Bai Province, Mu Cang Chai District, alt. 1700 m, VI.2021, local collector leg.
Description of the holotype. ♀ (Fig. 3D–F), body length 22.6 mm. Length of particular body parts: head (2.3 mm), pronotum (3.9 mm), elytra (16.9 mm); width: head (3.9 mm), pronotum (6.1 mm), elytra (7.8 mm).
Habitus (Fig. 3D–F). Dorsal surface of the body (Fig. 3D) multicoloured and lustred, mostly part metallic green to metallic purple, with three pairs of orange spots on the elytra. Head densely setose, pronotum (except disc) moderately setose, elytra glabrous. Ventral surface of the body (Fig. 3F) metallic purple with lustre, covered with long white pubescence, pubescence on prosternum, sides of abdomen and all femora markedly denser and longer than on other areas. All femora and tibiae metallic green to metallic purple with a hint of metallic blue; tarsi metallic green to metallic blue with a hint of metallic purple and black; all femora, tibiae and tarsi densely covered with white setae.
Head (Fig. 5G) transverse, about 0.6 times as wide as pronotum, not wider than anterior pronotal margin; vertex reticulately punctate with a white seta in most punctures, and with a narrow longitudinal median groove extending to frons, there are a pair of irregular oblique ridges that begin in the middle of the groove and slope to the sides and end near the eye; frons nearly twice as wide as eye, reticulately punctate, and with long white setae laterally and apically (Fig. 5G, see red frame); clypeal suture indistinct; clypeus transverse with a nearly straight anterior margin; anteclypeus yellowish-brown, exposed and glabrous; labrum subrectangular, transverse, covered with a few punctures and yellow setae near anterior margin; labium with a nearly flat anterior margin; mentum with an arcuate anterior margin; eye nearly 1/4 times as wide as head in dorsal view and nearly 1/5 times as wide as head in ventral view; maxillary palpus metallic green to metallic blue. Antenna (Fig. 4K–P) slightly shorter than the combined length of head and pronotum; scape longest, pear-shaped, three times as long as wide; pedicel ovoid, 1.6 times as long as wide; 3 rd antennomere weakly triangular, bilaterally slightly flattened, moderately protruding at inner apex and 2.7 times as long as wide; antennomeres 4–10 subtriangular, bilaterally flattened, similarly shaped and longer than wide; terminal antennomere (Fig. 4M–N) somewhat ovoid, not notched at tip and 2.2 times as long as wide; antennomeres 4–11 with apical organs and lateral organs formed by fossae and fields of sensilla; apical organs (Fig. 4L) large, restricted to apical portion of ventral side of antennomeres 4–10, and restricted to near apical 1/6 of ventral side of terminal antennomere; lateral organs (Fig. 4K–L) visible on dorsal and ventral sides of antennomeres 4–11, the ventral portions always larger than dorsal portions.
Pronotum (Fig. 5G) transverse, moderately convex, about 1.6 times as wide as long and widest near basal 1/5; anterior margin about 0.7 times as wide as posterior margin, bisinuate, and moderately convex at middle; posterior margin bisinuate and not carinate; posterior angles acute; lateral margins widely curved; longitudinal carina absent; lateral depressions on sides with convex disc, shallow and not obvious; punctures on pronotum denser, more irregular, and bearing white sparse setae near anterior and lateral margins.
Scutellum (Fig. 5G) small, flat, sub-round, without punctures, as wide as long; metallic purple.
Elytra (Fig. 3D) 4.5 times as long as pronotum, about 2.2 times as long as wide, widest near middle, with lateral margins parallel for more than half the length; humeral angles rounded; each elytron with five elevated costae, that are usually found in the same positions in most other species of the subgenus Akiyamaia (except B. (A.) intercostata Huang & Pan, 2015 and B. (A.) gengmini Qi & Song, new species); all costae abruptly elevated and sparsely covered with very fine punctures; all intervals between suture, costae and lateral margins irregularly granulate and glabrous; the sutural angle of elytron significantly extended (the red circle in Fig. 5H). Elytra mostly metallic green to metallic purple and with three pairs of orange spots, the upper pair oblique, broad and largest, near basal 1/4, between 3 rd costa and 5 th costa; the middle pair wider, slightly transverse, behind the mid-length, between 3 rd costa and 5 th costa; the lower pair small and narrow, near the apices, between 3 rd costa and 5 th costa.
Legs (Fig. 3D, 3F). Protibia abruptly dilated externally near apex and flattened there, with outer apex triangular and rounded, with two spurs and a setal tuft at apex of internal margin, and without hook or emargination at internal margin. Mesotibia gradually and slightly widened toward apex, with outer apex rectangular and with two spurs at apex of internal margin. Metatibia gradually and slightly widened toward apex, with outer apex rectangular and with two spurs at apex of internal margin.
Hindwing (Fig. 4Q) slightly brown at apical 2/3. The vein MP 3+4 with an obvious trace of root directed toward base of wing, form a branch and the lower one as long as the upper one; vein MP 3a joined to MP 3b but not sclerotised at the joint.
Ventral side (Fig. 3F). Prosternum slightly convex, declivous from the lateral margins to midline, punctures on the anterior and lateral parts larger and denser, on the prosternal process smaller and sparser; anterior margin slightly curved; anterior angles produced and acute; prosternal process (Fig. 4R) V-shaped, apex rounded. Metasternum with a complete longitudinal groove along midline, basal 2/3 deeper, and with an obvious arcuate transverse groove. First abdominal ventrite with rather flat surface between metacoxae; apical margin of last visible ventrite (Fig. 4S) nearly straight.
Female genitalia. Ovipositor of the holotype illustrated on Fig. 4T.
Differential diagnosis. This new species is similar to Buprestis (Akiyamaia) mirabilis Kurosawa, 1969, but can be easily distinguished from the latter by the following combination of characters: 1) frons with dense long white setae (the red frame in Fig. 5G) rather than with sparse short white setae (the red frame in Fig. 5E); 2) lateral depressions of pronotum shallower and not obvious (the red circle in Fig. 5G), rather than lateral depressions deeper and obvious (the red circle in Fig. 5E); 3) elytra moderately lustrous with three pairs of spots (other patterns may exist), rather than strongly lustrous, mostly with two pairs of stripes (vide Hattori, 2001); 4) the sutural angle of elytron significantly extended (the red circle in Fig. 5H), rather than the sutural angle almost not extended (the red circle in Fig. 5F); 5) the differences of ovipositors between the new species and B. (A.) mirabilis are shown in Fig. 4J, T.
Etymology. The species is named after Dr. Wen-I Chou (周£一, Taitung, Taiwan, China), who kindly provided many important specimens for our research.
Distribution. Vietnam (Yen Bai).
description: Published as part of Qi, Zhi-Hao, Su, Rong-Xiang, Liao, Zhi-Yu, Ai, Hong-Mu, Ding, Bi & Song, Hai-Tian, 2024, Revision of the rare Buprestis subgenus Akiyamaia Kurosawa, 1988 (Coleoptera: Buprestidae: Buprestinae), with description of two new species, pp. 301-316 in Zootaxa 5410 (3) on pages 306-309, DOI: 10.11646/zootaxa.5410.3.1, http://zenodo.org/record/10664443