Agrilus xis, Jendek, Eduard & Grebennikov, Vasily V., 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: 463-464

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Agrilus xis

sp. nov.

Agrilus xis   sp. nov.

( Figs. 2B View FIGURES 2 , 5H View FIGURES 5 )

Description of holotype. Body length: 5.2 mm. BODY. Shape: subparallel, Color (dorsally): unicolored. HEAD. Size: very large, Modification: strongly convex. Vertex. Medial impression: present, Sculpture elements: rugae, Sculpture aspect: subparallel, Sculpture density: dense. Eyes. Size: subequal or larger 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 middle, Anterior margin: subequal to 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, Lateral impressions (depth): shallow. Prehumerus. Development: filamentary, Shape: bisinuate, Extent: beyond 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 1/5–1/4 of marginal carina, Modifications: submarginal carina anteriorly obliterate. ELYTRA. Color: unicolored, Humeral carina: absent. Apices. Arrangement: separate, Shape: arcuate. Pubescence. Extent: entire except glabrous part at distal half. STERNUM. Pubescence. Strip of erect pubescence: absent. Prosternal lobe. Distal margin: arcuately emarginate, Emargination (depth): shallow, Emargination (width): wide. Prosternal process. Shape: subparallel, Sides: straight, Angles: obtuse, Disc: flat, with cluster of setae, Projection (length): protruding distinctly beyond angles. Metasternum. Metasternal projection: flat. ABDOMEN. Basal ventrite. Modifications: absent.

Pygidium. Apical margin: arcuate. Sternal groove. Shape on apex of last ventrite: arcuately sinuate, Sinuosity (depth): markedly deep. LEGS. Metacoxal plates. Modifications: with tubercle on inner margin. Metatarsus. Length to metatibia: distinctly shorter. Metatarsomere 1. Length to following tarsomeres: subequal or longer than 2–4. GENITALIA. Aedeagus. Symmetry: symmetric, Profile: flat.

Variability. Body length: 4.6–5.3 mm. Sexual dimorphism. The males with longer and more slender antennae, and a cluster of setae on the prosternal process and on the inner margins of metacoxae. The females with the ovipositor markedly elongate.

Diagnosis. Agrilus xis   sp. nov. is similar to Agrilus hiatus Jendek, 2007   by the size, by the general appearance, by the slender antennae, and mainly, by the shape of aedeagus ( Fig. 5H View FIGURES 5 ). The new species can be distinguished by the absence of a medial strip of erect pubescence on the sternum in the males.

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 ♂, 2 ♂ 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: “Laos-NE, Houa Phan prov., 20°12–13.5'N, 103°59'.5– 104°01'E, Ban Saluei + Phou Pane Mt., 1340–1870m, 1.v.–, 2009, Lao collectors leg.” 2 ♂ paratypes ( 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), 1 ♀ paratype ( EJCB); “Laos-NE, Houa Phan prov., 20°12–13.5'N, 103°59'.5– 104°01'E, Ban Saleuy + Phou Pane Mt., 1340–1870m, 2.–22. vi. 2011, Vít Kubáň & Lao coll. leg.” 1 ♀ paratype ( EJCB). GoogleMaps  

Distribution. LAOS: Houaphan.


Canadian National Collection of Insects, Arachnids, and Nematodes


Smithsonian Institution, National Museum of Natural History