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BODY. Size: 12 mm (Holotype).Shape: cuneiform, Posterior tapering part: long with narrow apex, Color (dorsally): unicolored. HEAD. Medial impression: deep, Epistoma: raised above frons, Vertex: Shape: markedly convex, Sculpture elements: rugae, Sculpture shape: semispherical, Sculpture density: dense, Eyes: Size: small, Lower margin: in line or below with antennal socket, Medial orbit: converging ventrally, Antennae: Serration: from antennomere 4. PRONOTUM. Shape: transverse, Sides: slightly arcuate, Maximal width: at middle or at posterior margin, Anterior margin: subequal to posterior, Anterior lobe: Size: moderate, Shape: arcuate, Position: at level with anterior angles or projecting beyond anterior angles, Posterior angles: Shape: obtuse, Apex: sharp, Disk: Impressions: medial and lateral, Medial impression: anteromedial and posteromedial, Prehumerus: Development: carinal, Shape: bisinuate, Extent: to 1/3 of pronotal length, Anterior end: distant from lateral carina, Posterior end: distant from angles and margin, Arc: weak, Lateral carinae: Convergence: moderately convergent, Junction: present, Narrowest point: at posterior angles. ELYTRA. Color: monochromatic, Humeral carina: absent, Apices: Arrangement: separate, Shape: arcuate, Pubescence: Color: monochromatic, Density: dense, Extent: entire ornamental with indication of stripes. STERNUM. Prosternal lobe: Size: large, Distal margin: arcuately emarginate, Emargination (width): narrow, Prosternal process: Shape: subparallel, Sides: straight, Angles: obtuse, Angles (tips): blunt, Disc: flat, Projection (extend): distinctly beyond angles, Mesosternum: Mesosternal projection: flat. ABDOMEN. Tomentum: present, Pygidium: Apical margin: arcuate, Sternal groove: Extent: on three apical ventrites, Shape on the apex of last ventrite: arcuate. 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: markedly elongate.
Agrilus umrongso sp. n. can be distinguished from the very close Agrilus perroti by the head much more deeply impressed medially; by the apically arcuate pygidium and by the distinctly emarginate prosternal lobe. See also Appendix.
Northeastern India, Assam, 5 km north of Umrongso, altitude 700 m, [http://ptp.pensoft.eu/redirect_to_googlemap.php?labels%5B0%5D=25%C2%B027%27N%2C+92%C2%B043%27E&coordinates%5B0%5D=25%C2%B027%27N%2C+92%C2%B043%27E 25°27'N, 92°43'E].
Holotype (Fig. 3), ♀, (EJCB): “NE India, Assam, 1999, 5 km N of Umrongso, 700m, [http://ptp.pensoft.eu/redirect_to_googlemap.php?labels%5B0%5D=25%C2%B027%27N%2C+92%C2%B043%27E&coordinates%5B0%5D=25%C2%B027%27N%2C+92%C2%B043%27E 25°27'N, 92°43'E], 17.–25.v., Dembický & Pacholátko leg.”.
5. Altitude range: 700 m.
The specific name is a noun in apposition. It refers to the Umrongso, the type locality of the species.
- Jendek, E; 2013: Revision of the Agrilus occipitalis species–group (Coleoptera, Buprestidae, Agrilini) ZooKeys, 256: 35-79. doi