Agrilus yoa, 2019

Jendek, Eduard & Grebennikov, Vasily V., 2019, Twenty more new species of Agrilus (Coleoptera: Buprestidae: Agrilinae) from the Oriental region, Zootaxa 4564 (2), pp. 449-469 : 464

Agrilus yoa sp. nov.

( Figs. 3E , 5N )

Description of holotype. Body length: 4.3 mm. BODY. Shape: cuneiform, Build: robust, Profile: convex. HEAD. Medial impression: deep. Frons. Shape: flat. Vertex. Outline: markedly protruding head outline, Sculpture elements: rugae, Sculpture aspect: arcuate, Sculpture density: dense. Eyes. Size: smaller than half width of vertex (dorsal view), Shape: markedly protruding head outline, Lower margin: in line or below antennal socket, Median orbit: subparallel. Antennae. Serration: from antennomere 4. PRONOTUM. Shape: visually transverse, Sides: slightly arcuate, Maximal width: at posterior margin, Anterior margin: narrower than posterior. Anterior lobe. Development: obvious, Width: broad, Position: at level with anterior angles. Posterior angles. Shape: obtuse, Apex: blunt. Disk. Impressions: lateral only, Lateral impressions (depth): shallow, Lateral impressions (width): narrow. Prehumerus. Development: obsolete, Shape: arcuate, Extent: to 1/2 of pronotal length, Anterior end: distant from lateral pronotal carina, Posterior end: joined with posterior pronotal angle or margin, Arc: weak. Lateral carinae. Convergence: moderate, Junction: present, Narrowest point: at posterior angles. ELYTRA.

Apices. Arrangement: conjoint, Shape: arcuate. Pubescence. Character: with patches or spots of denser pubescence. STERNUM. Pubescence. Strip of erect pubescence: absent. Prosternal lobe. Distal margin: arcuately emarginate, Emargination (depth): deep. Prosternal process. Shape: subparallel, Sides: straight, Angles: obtuse, Angles (tips): blunt, Disc: flat. Metasternum. Metasternal projection: impressed. ABDOMEN. Basal ventrite. Modifications: with transverse protrusion. Pygidium. Apical margin: arcuate. Sternal groove. Shape on apex of last ventrite: arcuately sinuate, Sinuosity (depth): markedly deep. LEGS. Metatarsus. Length to metatibia: distinctly shorter. Metatarsomere 1. Length to following tarsomeres: longer than 2–3, but shorter than 2–4. GENITALIA. Aedeagus. Symmetry: symmetric, Profile: flat.

Variability. Body length: 4.3–5.3 mm. Elytral apices of paratypes are widely, separately arcuate. Sexual dimorphism. The males with frons golden-green. The females with frons golden-red; antennae shorter and ovipositor elongate.

Diagnosis. Agrilus yoa sp. nov. is similar to A. cicadelloides sp. nov. ( Fig. 3C ) by the size, by the color, by the habitus, and by the shape of the pronotum. The new species can be distinguished by the absence of a cluster of long setae on head, by the less prominent prosternal lobe, and by the different pattern of the elytral pubescence.

Type material. Type locality: Northeastern Laos, Houa Phan province, 20°12–13.5'N, 103°59'.5– 104°01'E, Ban Saluei + Phou Pane Mt. , altitude 1340–1870 m. Type specimens. Holotype ♂ ( EJCB): “Laos-NE, Houa Phan prov., 20°12–13.5'N, 103°59'.5– 104°01'E, Ban Saluei + Phou Pane Mt., 1340–1870m, 15.iv.–15.v.2008, Lao collectors leg.”. Other types. VIETNAM: Ninh Binh: “Vietnam, Ninh Binh, Cuc Phuong Nat. Park, xii.1987, Y. M. Zaitsev ” 1 ♀ paratype ( EJCB); “N Vietnam / Ninh Binh prov., Cuc Phuong NP, N20°17'57”, E105°40'05”, 270m, 4–9.v.2017, leg. A.Weigel KL” 1 ♀ paratype ( EJCB).

Distribution. LAOS: Houaphan; VIETNAM: Ninh Binh.

Figures

FIGURES 3A–3E. Holotypes of Agrilus, habitus in dorsal view. 3A, A. draco sp. nov. (17.2 mm); 3B, A. jankae sp. nov. (8.9 mm); 3C, A. cicadelloides sp. nov. (6.8 mm); 3D, A. hik sp. nov. (5.5 mm); 3E, A. yoa sp. nov. (4.3 mm).

FIGURES 5A–5N. Aedeagi of Agrilus holotypes. 5A, A. xia sp. nov.; 5B, A. hergovitsi sp. nov.; 5C, A. zao sp. nov.; 5D, A. wos sp. nov.; 5E, A. uxo sp. nov.; 5F, A. xen sp. nov.; 5G, A. yuk sp. nov.; 5H, A. xis sp. nov.; 5I, A. qom sp. nov.; 5J, A. jum sp. nov.; 5K, A. ika sp. nov.; 5L, A. kon sp. nov.; 5M, A. hik sp. nov.; 5N, A. yoa sp. nov.