Agrilus tesselatus sp. n. Fig. 1 (habitus of holotype)

Description.

BODY. Size: 9.9 mm (Holotype).Shape: subparallel, Build: robust, Posterior tapering part: short with broad apex, Color (dorsally): unicolored. HEAD. Medial impression: deep, Epistoma: raised above frons, Frons: Shape: markedly convex, Vertex: Shape: markedly convex, Sculpture elements: rugae, Sculpture shape: semispherical, Eyes: Size: small, Shape: markedly protruding head outline, Lower margin: in line or below with antennal socket, Medial orbit: converging ventrally, Antennae: Length: short, Width: solid, Serration: from antennomere 5, Antennomere 7-10 (shape): without collum, Antennomere 7-10 (length): markedly wider than long. PRONOTUM. Shape: transverse, Sides: straight, Maximal width: at posterior margin, Anterior ma rgin: narrower than posterior or subequal to posterior, Anterior lobe: Size: obvious, Position: projecting beyond anterior angles, Posterior angles: Shape: obtuse, Apex: blunt, Disk: Convexity: strongly convex, Impressions: absent or medial and lateral, Medial impression: anteromedial and posteromedial, Lateral impressions (intensity): shallow, Lateral impression (size): narrow, Prehumerus: Development: carinal, Shape: straight, Anterior end: distant from lateral carina, Posterior end: distant from angles and margin, Lateral carinae: Convergence: moderately convergent, Junction: present, Narrowest point: at posterior angles, Scutellum: Disc: impressed, Scutellar carina: obsolete or absent. ELYTRA. Color: monochromatic, Humeral carina: absent, Apices: Arrangement: separate, Shape: subtruncate, Truncation: transverse, Pubescence: Color: monochromatic, Extent: entire ornamental. STERNUM. Prosternal lobe: Distal margin: angulately emarginate, Delimitation: angulate, Emargination (width): wide, Prosternal process: Shape: subparallel, Sides: straight, Angles: rectangular, Angles (tips): blunt, Disc: flat, Projection (extend): distinctly beyond angles, Mesosternum: Mesosternal projection: flat. ABDOMEN. Tomentum: absent, Pygidium: Apical margin: arcuate, Sternal groove: Extent: on apical ventrite, Shape on the apex of last ventrite: angulately sinuate, Emargination (width): markedly wide. LEGS. Metatarsus: Size to metatibia: distinctly shorter than metatibia, Tarsomere 1: Size to following tarsomeres: longer than 2-3 but shorter than 2-4. GENITALIA. Ovipositor: Shape: square (uritiform).

Diagnosis.

The very distinctive species which differs from all other members of Agrilus occipitalis species-group mainly by characters given for the subgroup definition. See also Appendix.

Type locality.

NorthVietnam, Tonkin, Ninh Binh province, Cuc-Phuong national park, 20°18'N, 105°39'00"E.

Type material.

Holotype (Fig. 1), ♀, (EJCB): "Vietnam N, Tonkin, Cuc-Phuong nat. park, 2-12. V. 1991, E. Jendek leg.".

Adult occurrence:

5.

Host plant.

Unknown.

Distribution.

VIETNAM: Ninh Binh.

Etymology.

The specific name is the Latin adjective tesselatus (checkered). It refers to the elytral pubescence of the species.