Agrilus xen, 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 : 461-462

publication ID	https://doi.org/ 10.11646/zootaxa.4564.2.7
publication LSID	lsid:zoobank.org:pub:E9A51130-1579-45A7-A1BC-D5B161DA0455
DOI	https://doi.org/10.5281/zenodo.3716700
persistent identifier	https://treatment.plazi.org/id/C9368781-FF92-E37C-FF00-F9F9E35B3FD2
treatment provided by	Plazi
scientific name	Agrilus xen
status	sp. nov.

Treatment

Agrilus xen View in CoL View at ENA sp. nov.

( Figs. 1F View FIGURES 1 , 5F View FIGURES 5 )

Description of holotype. Body length: 5 mm. BODY. Shape: subparallel, Profile: convex, Color (dorsally): unicolored. HEAD. Size: very large, Modification: strongly convex. Vertex. Medial impression: present, Sculpture elements: rugae, Sculpture aspect: subparallel, Sculpture density: dense, Sculpture intensity: rough. Eyes. Size: larger than half width but smaller than width of vertex (dorsal view), Lower margin: in line or below antennal socket, Median orbit: subparallel. Antennae. Serration: from antennomere 4, Antennomeres 7–10: with obvious petiole. PRONOTUM. Shape: visually elongate or square, Sides: slightly arcuate, Maximal width: at anterior margin, Anterior margin: wider than posterior. Anterior lobe. Development: obvious, Shape: arcuate, Width: broad, Position: at level with anterior angles. Posterior angles. Shape: obtuse, Apex: sharp. Disk. Convexity: flat, Impressions: medial and lateral, Medial impression: entire, Lateral impressions (depth): shallow, Lateral impressions (width): broad. Prehumerus. Development: filamentary, Shape: arcuate, Extent: to 1/2 of pronotal length, Anterior end: adjoining to lateral pronotal carina, Posterior end: joined with posterior pronotal angle or margin, Arc: moderate. Lateral carinae. Convergence: moderate, Junction: present, Narrowest point: at posterior 1/3 of marginal carina. ELYTRA, Color: unicolored, Humeral carina: absent. Apices. Arrangement: separate, Shape: arcuate. Pubescence. Extent: proximal and distal, Proximal (shape): quadrangular, Distal (shape): preapical. STERNUM. Pubescence. Strip of erect pubescence: absent. Prosternal lobe. Distal margin: arcuately emarginate, Emargination (depth): shallow, Emargination (width): narrow. Prosternal process. Shape: slightly dilated, Sides: straight, Angles: obtuse, Angles (tips): blunt, Disc: impressed with sides exserted, Projection (length): protruding distinctly beyond angles. Metasternum. Metasternal projection: impressed. ABDOMEN. Basal ventrite. Modifications: absent. Pygidium. Apical margin: arcuate. Sternal groove. Shape on apex of last ventrite: arcuately sinuate. LEGS. Metacoxal plates. Modifications: with cluster of setae on inner margin.

Metatarsus. Length to metatibia: somewhat shorter. Metatarsomere 1. Length to following tarsomeres: longer than 2–3, but shorter than 2–4. GENITALIA. Aedeagus. Symmetry: feebly asymmetric, Shape: widest in apical part.

Variability. Body length: 4.1–5 mm. The widest part of the pronotum either at the middle of pronotum, or at its anterior margin. Sexual dimorphism. The male has longer antennae and a small cluster of setae on the inner margin of the metacoxae. The female has a markedly elongate ovipositor.

Diagnosis. Agrilus xen sp. nov. is similar to A. miwai Obenberger, 1936 by the habitus, by the color, by the absence of a strip of erect pubescence on the sternum in the males, and by the pattern of the elytral pubescence. The new species can be distinguished by the impressed, with exserted sides of the prosternal process, by the lack of tubercles on the basal ventrite in the males, and by the shape of the aedeagus ( Fig. 5F View FIGURES 5 ).

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 ♂, 6 paratypes ( 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. LAOS: Houaphan: “Lao-NE, Hua Phan pr., ~ 20°12'N, 104°01'E, Phu Phan Mt., 1500–1900m, 17.v.–3.vi.2007, Vít Kubáň leg.” 1 ♀ paratype ( EJCB); “Laos- NE, Hua Phan Province, Ban Saleui, Phou Pan (Mt), 20°12'N, 104°01'E, 7.iv–25.v.2010, 1300–1900m, leg. C. Holzschuh ” 1 ♂ paratype ( CNC), 1 ♂ paratype, 1 ♀ paratype ( USNM). GoogleMaps

Distribution. LAOS: Houaphan.