Revision of the Agrilus occipitalis species-group (Coleoptera, Buprestidae, Agrilini) Author Jendek, Eduard text ZooKeys 2013 256 35 79 http://dx.doi.org/10.3897/zookeys.256.4272 journal article http://dx.doi.org/10.3897/zookeys.256.4272 1313-2970-256-35 Agrilus nebulosus sp. n. Fig. 13 (habitus of holotype); Fig. 33 (aedeagus) Description. BODY. Size: 6.4-7.5 mm (Holotype 6.5 mm).Shape: cuneiform, Posterior tapering part: long with narrow apex, Color (dorsally): unicolored, Sexual modifications in male: not apparent. HEAD. Medial impression: deep, rarely shallow, Epistoma: raised above frons, Vertex: Sculpture elements: rugae, Sculpture density: dense, Eyes: Size: moderate, Lower margin: in line or below with antennal socket, Medial orbit: converging ventrally, Antennae: Length: long, Width: slender, Serration: from antennomere 4. PRONOTUM. Shape: transverse, Sides: slightly arcuate, Maximal width: at anterior margin, Anterior margin: wider than posterior, Anterior lobe: Size: moderate, Shape: arcuate, Position: at level with anterior angles, Posterior angles: Shape: obtuse or rectangular, Apex: sharp, Disk: Impressions: medial and lateral, Medial impression: anteromedial and posteromedial, 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: present, Narrowest point: at posterior 1/5-1/4 of marginal carina. ELYTRA. Color: monochromatic, Humeral carina: absent, Apices: Arrangement: separate, Shape: arcuate, Pubescence: Color: monochromatic, Extent: entire ornamental, rarely entire ornamental with indication of stripes. STERNUM. Prosternal lobe: Size: large, Distal margin: arcuate, Prosternal process: Size: wide, Shape: dilated, rarely subparallel, Sides: straight, Angles: acute, Angles (tips): blunt, Disc: flat, Projection (extend): distinctly beyond angles, Mesosternum: Mesosternal projection: flat. ABDOMEN. Tomentum: absent, Pygidium: Apical margin: arcuate, rarely 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: distinctly shorter than metatibia, Tarsomere 1: Size to following tarsomeres: longer than 2-3 but shorter than 2-4 or subequal or longer than 2-4. GENITALIA. Aedeagus (Fig. 33): Symmetry: symmetric, Shape: widest in basal part, rarely subparallel, Modifications: apex of medial lobe sharply pointed, Ovipositor: Shape: markedly elongate. Figures 25-45. Aedeagus of Agrilus : 25 Agrilus perroti Descarpentries & Villiers, 1963 26 Agrilus zanthoxylumi Li Meng Lou, 1989 27 Agrilus auroapicalis ishigakianus Toyama , 1985 28 Agrilus ambiguus Kerremans, 1895 29 Agrilus picturatus sp. n - Holotype 30 Agrilus pseudoambiguus sp. n - Holotype 31 Agrilus alesi Obenberger, 1935 32 Agrilus auriventris Saunders, 1873 33 Agrilus nebulosus sp. n - Holotype 34 Agrilus yamawakii Kurosawa, 1957 35 Agrilus horniellus Obenberger, 1935 36 Agrilus occipitalis (Eschscholtz, 1822) - Philippines, Palawan 37 Agrilus sordidulus Obenberger, 1916 38 Agrilus inamoenus Kerremans, 1892 39 Agrilus mucidus sp. n - Holotype 40 Agrilus tonkineus Kerremans, 1895.Pygidium of Agrilus 41 Agrilus alesi Obenberger, 1935 42 Agrilus auriventris Saunders, 1873 43 Agrilus occipitalis (Eschscholtz, 1822) - Laos, Vientiane, Ban Phabat 44 Agrilus occipitalis (Eschscholtz, 1822) - Papua New Guinea, Sideia island 45 Agrilus occipitalis (Eschscholtz, 1822) - Thailand, Mae Hong Son, Pai. Diagnosis. From the close Agrilus auriventris , it can be distinguished by the generally smaller size and slender body; by the pygidium arcuate apically and by the the groove on the apex of last ventrite arcuate (rarely sinuate). See also Appendix. Type locality. North Vietnam, 21°35N, 106°30E, 52 km southwest of Lang Son, altitude 370 m. Type material. Holotype (Fig. 13), ♂, (EJCB): "N Vietnam, 21°35N, 106°30E, 52 km SW of Lang Son, 27.iv.-6.v.1996, 370 m, Dembicky and Pacholatko leg.". Paratypes:1 ♂ paratype, 7 ♀ paratypes (EJCB) from the same locality as holotype. Adult occurrence: 5-6. Altitude range: 300 m. Host plant. Unknown. Distribution. VIETNAM:Lang Son. Etymology. The specific name is Latin adjective nebulosus (misty, hazy, indefinite, obscure). It refers to the faint ornamental elytral pubescence of the species.