Agrilus oudomxai, Jendek, 2018

Jendek, Eduard, 2018, Revision of the Agrilus gratiosus species-group (Coleoptera, Buprestidae, Agrilinae), Zootaxa 4433 (3), pp. 478-490 : 482-484

Agrilus oudomxai sp. nov.

( Figs. 1C , 3C )

Description of holotype Size: 6.7 mm. BODY. Shape: cuneiform, Build: slender, Profile: convex, Color (dorsally): unicolored. HEAD. Medial impression: deep. Vertex Medial impression: present, Sculpture elements: rugae, Sculpture aspect: arcuate. Eyes Size: subequal or larger than width of vertex (dorsal view), Lower margin: in line or below antennal socket, Median orbit: converging ventrally. Antennae Serration: from antennomere 4. PRONOTUM. Shape: visually transverse, Sides: slightly arcuate, Maximal width: at posterior margin, Anterior margin: narrower than posterior. Anterior lobe Development: obvious, Shape: arcuate, Position: projecting beyond anterior angles. Posterior angles Shape: rectangular, Apex: sharp. Disk Impressions: medial and lateral, Medial impression: entire, Lateral impressions (depth): deep. 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: weak. Lateral carinae Interspace: narrow, Convergence: moderate, Junction: present, Narrowest point: at posterior angles. ELYTRA. Color: unicolored, Humeral carina: absent. Apices Arrangement: separate, Shape: arcuate, Modifications: margin obviously denticulate. Tomentum Pairs of tomentose spots: humeral, medial, apical. Pubescence Color: unicolored. STERNUM. Pubescence Strip of erect pubescence: absent. Prosternal lobe Size: large, Distal margin: subtruncate. Prosternal process Width: wide, Shape: subparallel, Sides: arcuate, Angles: obtuse, Angles (tips): blunt, Disc: flat, Projection (length): protruding distinctly beyond angles, Metasternum Metasternal projection: flat. ABDOMEN. Basal ventrite Modifications: without modifications. Pygidium Apical margin: arcuate. Sternal groove Extent: on all ventrites, Shape on apex of last ventrite: arcuate. LEGS. Metatarsus Length to metatibia: distinctly shorter. Metatarsomere 1 Length to following tarsomeres: longer than 2–3 but shorter than 2–4. GENITALIA. Aedeagus Symmetry: symmetric, Shape: subparallel.

Variability. Known only from the single male. Aedeagus ( Fig. 3C ).

Diagnosis. By slender body and arcuate pronotal sides, A. oudomxai sp. nov. is very similar to A. pluridens . It differs in having eye in male subequal to width of vertex (dorsal view) and elytral apices only finely denticulate.

Type material. Type locality. Northern Laos, Oudômxai province, 17 km NEE Oudom Xai, altitude circa 1100 m, 20°45'N, 102°09'E. Type specimens. Holotype ♂ ( EJCB): “Laos-N (Oudomxai), 1–9.v.2002, ~ 1100m, 20°45'N, 102°09'E, Oudom Xai (17 km NEE), Vít Kubáň leg.” .

Distribution. LAOS: Oudômxai.

Etymology. The name is derived from the Laotian province where the holotype was collected.

Figures

FIGURES 1A–AF. Habitus of species of Agrilus gratiosus species–group. A: A. bacchus Kerremans, 1913, specimen from Taiwan, 8 mm; B: A. cultus sp. nov., holotype, 7.3 mm; C: A. oudomxai sp. nov., holotype, 6.7 mm; D: A. pluridens sp. nov., holotype, 6.2 mm; E: A. pubinotus sp. nov. holotype, 8.1 mm; F: A. signipes sp. nov. holotype, 7.7 mm.

FIGURES 3A–3G. Aedeagus of species of Agrilus gratiosus species–group. A: A. cultus sp. nov., holotype; B: A. gratiosus Deyrolle, 1864, specimen from Malaysia: Sabah; C: A. oudomxai sp. nov., holotype; D: A. pergratus sp. nov., holotype; E: A. pluridens sp. nov., holotype; F: A. signipes sp. nov. holotype; G: A. transverus Kerremans 1894, specimen from Indonesia: Java.