Agrilus pseudoambiguus, Jendek, Eduard, 2013

Jendek, Eduard, 2013, Revision of the Agrilus occipitalis species-group (Coleoptera, Buprestidae, Agrilini), ZooKeys 256, pp. 35-79 : 51-52

Agrilus pseudoambiguus sp. n. Fig. 10 (habitus of holotype); Fig. 30 (aedeagus)

Description.

BODY. Size: 5.9-8.1 mm (Holotype 8.1 mm).Shape: cuneiform, Color (dorsally): bicolored, rarely unicolored, Sexual modifications in male: not apparent. HEAD. Medial impression: deep, Epistoma: raised above frons, Vertex: Shape: mar kedly convex, Sculpture elements: rugae, Sculpture shape: semispherical or subparallel, Sculpture density: dense, Eyes: Size: small, Lower margin: in line or below with antennal socket, Medial orbit: converging ventrally, Antennae: Length: long, Width: slender, Serration: from antennomere 4, Antennomere 7-10 (shape): with obvious collum. PRONOTUM. Shape: visually square, Sides: slightly arcuate, rarely subangulate, Maximal width: at middle, Anterior margin: subequal to posterior or wider than posterior, Anterior lobe: Size: absent or vague, rarely moderate, Shape: arcuate, Position: at level with anterior angles, Posterior angles: Shape: rectangular, rarely acute, rarely obtuse, Apex: sharp, Disk: Impressions: medial and lateral, Medial impression: anteromedial and posteromedial, Lateral impressions (intensity): deep, Lateral impression (size): narrow, Prehumerus: Development: carinal, Shape: arcuate, Extent: to 1/3 of pronotal length, Anterior end: distant from lateral carina, Posterior end: joined with posterior angle or margin, Arc: moderate or weak, Lateral carinae: Convergence: moderately convergent, Junction: absent or present, Narrowest point: at posterior angles. ELYTRA. Color: dichromatic, Alternative color: apical portion, Apices: Arrangement: separate, Shape: arcuate, Pubescence: Color: monochromatic, Extent: entire ornamental, rarely entire ornamental with indication of stripes. STERNUM. Prosternal lobe: Distal margin: arcuate, Prosternal process: Shape: dilated or subparallel, Sides: straight, Angles: obtuse, Disc: flat, Projection (extend): distinctly beyond angles, Mesosternum: Mesosternal projection: flat. ABDOMEN. Pygidium: Apical margin: angulate, Sternal groove: Extent: on all ventrites or on three apical ventrites, Shape on the apex of last ventrite: arcuate, rarely arcuately sinuate, Emargination (deepness): very shallow. LEGS. Metatarsus: Size to metatibia: somewhat shorter as metatibia, Tarsomere 1: Size to following tarsomeres: subequal or longer than 2-4. GENITALIA. Aedeagus (Fig. 30): Symmetry: symmetric, Shape: subparallel, Modifications: apex of medial lobe sharply pointed, Ovipositor: Shape: markedly elongate.

Diagnosis.

From very similar Agrilus picturatus sp. n., this new species differs by having the pronotum more transverse with sides slightly arcuate; by absent or vague pronotal lobe and by the smooth or very finely denticulate elytral apices. See also Appendix.

Type locality.

Laos, Louang Namtha pr., 21°09'N, 101°19'E, Namtha - Muang Sing, 900-1200 m.

Type material.

Holotype (Fig. 10), ♂, (EJCB): "Laos, Louang Namtha pr., 21°09'N, 101°19'E, Namtha - Muang Sing, 5-31.v.1997, 900-1200 m, Vit Kubáň leg.". Paratypes: 2 paratypes (EJCB) with the same data as holotype. 1 paratype (EJCB): "Laos NE, Hua Phan prov., 20°19'N, 104°25'E, 25 km SE Vieng Xai (by road), Ban Kangpabong env., 14-18.v.2001, D. Hauck leg."

Adult occurrence:

5. Altitude range: 900-1200 m.

Host plant.

Unknown.

Distribution.

LAOS:Houaphan; Louang Namtha.

Etymology.

The specific name is derived from Greek prefix pseudo- (having the appearance of) and the specific name ambiguus; it refers to the similarity of the species to Agrilus ambiguus .