Agrilus ika, 2019

Jendek, Eduard & Grebennikov, Vasily V., 2019, Twenty more new species of Agrilus (Coleoptera: Buprestidae: Agrilinae) from the Oriental region, Zootaxa 4564 (2), pp. 449-469 : 452-453

Agrilus ika sp. nov.

( Figs. 2E , 5K )

Description of holotype. Body length: 6.6 mm. BODY. Shape: cuneiform, Profile: convex, Color (dorsally): unicolored. HEAD. Vertex. Medial impression: present, Sculpture elements: rugae, Sculpture aspect: arcuate, Sculpture density: dense. Eyes. Size: larger than half width but smaller than width of vertex (dorsal view), Lower margin: in line or below antennal socket, Median orbit: converging ventrally. Antennae. Length: reach to anterior pronotal angles, Serration: from antennomere 4. PRONOTUM. Shape: visually elongate or square, Sides: slightly arcuate, Sides (modification): sinuate before posterior angles, Maximal width: at middle, Anterior margin: subequal to posterior. Anterior lobe. Development: obvious, Shape: arcuate, Width: broad, Position: at level with anterior angles. Posterior angles. Shape: acute, Apex: sharp. Disk. Impressions: medial and lateral, Medial impression: entire. Prehumerus. Development: carinal, Shape: arcuate, Extent: to 1/2 of pronotal length, Modifications: with rudiment at anterior part, Anterior end: distant from lateral pronotal carina, Posterior end: joined with posterior pronotal angle or margin, Arc: moderate. 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. Pubescence. Extent: entire except epipleura. 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): narrow. Prosternal process. Width: wide, Shape: markedly dilated, Sides: straight, Angles: acute, Angles (tips): sharp, Disc: flat, Projection (length): adjoining to angles. Metasternum. Metasternal projection: flat. ABDOMEN. Basal ventrite. Modifications: absent. Pygidium. Apical margin: arcuate. Sternal groove. Shape on apex of last ventrite: arcuately sinuate, Sinuosity (depth): very shallow. LEGS. Metatarsus. Length to metatibia: distinctly shorter. Metatarsomere 1. Length to following tarsomeres: subequal or longer than 2–4. GENITALIA. Aedeagus. Symmetry: symmetric, Modifications: medial lobe distinctly wider than parameres.

Variability. Body length: 5.9–6.6 mm. The species is known only from males. Sexual dimorphism. The male has a medial strip of erect white pubescence from the prosternal lobe to the metasternal projection.

Diagnosis. Agrilus ika sp. nov. is similar to A. dahoi Baudon, 1965 by habitus, by the color, and by the obviously dilated sternal process. The new species can be distinguished by the pronotum with sinuate sides at the posterior angles; by the elytra having a wide strip of adsutural pubescence; by conjointly arcuate elytral apices; and by the apically enlarged aedeagus( Fig. 5K ).

Type material. Type locality: Solomon Islands, Quadalcanal Island , ca 3.5 km SE Barana village, 09°29.8'S, 159°59.5'E. Type specimens. Holotype ♂, 1 ♂ paratype ( EJCB): “ Solomon isl., Quadalcanal, ca 3.5km SE Barana vill., 09°29.8'S, 159°59.5'E, 23.xi.–15.xii.2013, J. Horak leg.”.

Distribution. SOLOMON ISLANDS.

Figures

FIGURES 2A–2F. Holotypes of Agrilus, habitus in dorsal view. 2A, A. yuk sp. nov. (7.2 mm); 2B, A. xis sp. nov. (5.2 mm); 2C, A. qom sp. nov. (4.3 mm); 2D, A. jum sp. nov. (4.4 mm); 2E, A. ika sp. nov. (6.6 mm); 2F, A. kon sp. nov. (4.1 mm).

FIGURES 5A–5N. Aedeagi of Agrilus holotypes. 5A, A. xia sp. nov.; 5B, A. hergovitsi sp. nov.; 5C, A. zao sp. nov.; 5D, A. wos sp. nov.; 5E, A. uxo sp. nov.; 5F, A. xen sp. nov.; 5G, A. yuk sp. nov.; 5H, A. xis sp. nov.; 5I, A. qom sp. nov.; 5J, A. jum sp. nov.; 5K, A. ika sp. nov.; 5L, A. kon sp. nov.; 5M, A. hik sp. nov.; 5N, A. yoa sp. nov.