Agrilus cultus, Jendek, 2018

Jendek, Eduard, 2018, Revision of the Agrilus gratiosus species-group (Coleoptera, Buprestidae, Agrilinae), Zootaxa 4433 (3), pp. 478-490 : 480

Agrilus cultus sp. nov.

( Figs. 1B , 3A )

Description of holotype Size: 7.3 mm. BODY. Shape: cuneiform, Build: robust, Profile: convex, Color (dorsally): unicolored. HEAD. Modification: strongly convex, Medial impression: absent. Vertex Sculpture elements: punctures, 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: straight, Maximal width: at posterior margin, Anterior margin: narrower than posterior. Anterior lobe Development: obvious, Shape: arcuate, Width: broad, Position: at level with anterior angles. Posterior angles Shape: rectangular, Apex: sharp. Disk Impressions: medial and lateral, Medial impression: entire, Lateral impressions (depth): deep, Lateral impressions (width): broad. 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 1/5–1/4 of marginal carina. 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: straight, Angles: obtuse, Angles (tips): blunt, Disc: flat, Projection (length): protruding distinctly beyond angles. Metasternum Metasternal projection: impressed. 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. Size: 6.1–7.5 mm. Sexual dimorphism. Female unknown. Aedeagus ( Fig. 3A ).

Diagnosis. Agrilus cultus sp. nov. and A. bacchus have subparallel sides of pronotum. The former is distinctive by slender body and narrower elytral apex.

Type material. Type locality. Laos-CE, Bolikhamxai province, 8 km Northeastern of Ban Nape, altitude circa 600 m, 18°21'N, 105°08'E. Type specimens. Holotype ♂, 4 ♂ paratypes ( EJCB): “Laos-CE., 1–18.v.2001, Boli Kham Xai prov. , 18°21'N, 105°08'E, Ban Nape (8 km NE), ~ 600m, Pacholátko leg.” ; 1 ♂ paratype ( EJCB): “ Laos- CE., 1–18.v.2001, Boli Kham Xai prov. , 18°21'N, 105°08'E, Ban Nape (8 km NE), ~ 600m, Dembický leg.”

Distribution. LAOS: Bolikhamxai.

Etymology. The Latin noun in apposition (polish, elegance).

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.