Agrilus signipes, Jendek, 2018

Jendek, Eduard, 2018, Revision of the Agrilus gratiosus species-group (Coleoptera, Buprestidae, Agrilinae), Zootaxa 4433 (3), pp. 478-490 : 487-489

Agrilus signipes sp. nov.

( Figs. 1F , 3F )

Description of holotype Size: 7.7 mm. BODY. Shape: cuneiform, Build: robust, Profile: convex, Color (dorsally): unicolored. HEAD. Modification: strongly convex, Medial impression: shallow. 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, Width: broad, Position: projecting beyond 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 1/2 of pronotal length, Anterior end: distant from lateral carina, Posterior end: joined with posterior angle or margin, Arc: weak. Lateral carinae Convergence: moderate, Junction: present, Narrowest point: at posterior 1/5–1/4 of marginal carina. ELYTRA. Color: unicolored, Humeral carina: absent. Apices Arrangement: conjoint, Shape: arcuate, Modifications: margin obviously denticulate. Tomentum Pairs of tomentose spots: humeral, medial, apical. Pubescence Color: unicolored. STERNUM. Pubescence Strip of erect pubescence: extending from prosternal lobe to metasternal projection. Prosternal lobe Size: large, Distal margin: arcuately emarginate, Emargination (depth): shallow, Emargination (width): wide. Prosternal process Shape: subparallel, Sides: straight, 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. Size: 7.3–7.7 mm. Sexual dimorphism. Frons golden–green (male) or bronze (female); vertex and pronotum dark–blue (male) or black (female). See also Diagnosis below. Aedeagus ( Fig. 3F ).

Diagnosis. Male is distinctive by having medial strip of golden, erect pubescence extending from prosternal lobe to metasternal process (lateral view).

Type material. Type locality. North Vietnam , Vinh Phuc province, 70 km NW of Hanoi, Tam Dao, altitude 900–1200 m, 21°27'N, 105°39'E. Type specimens. Holotype ♂ ( EJCB): “N Vietnam, 21°27N, 105°39E, 70 km NW of Hanoi, Tam Dao, 1–8.vi.1996, 900 – 1200 m, Dembický & Pacholátko leg.”; 1 ♀ paratype ( EJCB): “ Vietnam, Tam Dao, Vinh-Phu Pr., 3– 11.6.1985, Navrátil lgt.”.

Distribution. VIETNAM: Vinh Phuc.

Etymology. The name is combination of the Latin signo (mark, sign) and the Greek penna (wing). It refers to the spotted elytra of the species.

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.