Agrilus salakot, Jendek, 2018

Jendek, Eduard, 2018, Revision of the Agrilus quadripunctatus species-group (Coleoptera: Buprestidae: Agrilini) with description of four new species, Zootaxa 4392 (2), pp. 383-391 : 389-390

Agrilus salakot sp. nov.

( Fig. 1F )

Description of holotype. Size: 8.2 mm. BODY. Shape: cuneiform; Build: robust; Color (dorsally): unicolored. HEAD. Size: very large; Medial impression: deep. Frons: Outline: markedly protruding head outline. Vertex: Sculpture elements: rugae; Sculpture aspect: arcuate; Sculpture intensity: superficial. Eyes: Size: smaller than half width of vertex (dorsal view); Shape: markedly protruding head outline; Lower margin: in line or below antennal socket; Median orbit: converging ventrally. Antennae: Length: reach to about anterior pronotal angles; Serration: from antennomere 4. PRONOTUM. Shape: visually transverse; Sides: slightly arcuate; Maximal width: at middle; 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: Convexity: strongly convex; Impressions: medial and lateral; Medial impression: posteromedial only; Lateral impressions (depth): deep; Lateral impressions (width): narrow; Lateral impressions (modification): with tomentose patches. Prehumerus: Development: carinal; Shape: bisinuate; Extent: beyond 1/2 of pronotal length; Anterior end: joined with lateral carina; Posterior end: distant from posterior angle or margin; Arc: obvious. Lateral carinae: Convergence: moderate; Junction: absent; Narrowest point: at posterior 1/5–1/4 of marginal carina; Modifications: submarginal carina anteriorly and posteriorly obliterate. Scutellum: Size: robust. ELYTRA. Color: unicolored; Humeral carina: absent. Apices: Arrangement: separate; Shape: spinate; Number of cusps or spines: 1; Position of dominant projection: medial. Pubescence: Pairs of tomentose spots: humeral, medial, apical. STERNUM. Prosternal lobe: Size: large; Distal margin: arcuately emarginate; Emargination (depth): deep; Emargination (width): wide. Prosternal process: Shape: subparallel; Sides: straight; Angles: obtuse; Disc: flat; Projection (length): protruding distinctly beyond angles. Metasternum: Metasternal projection: flat. ABDOMEN. Tomentum: present. Last ventrite: Shape: with narrow apex; Disk: with medial carinula. Sternal groove: Extent: on apical ventrite; Shape on apex of last ventrite: arcuate. LEGS. Metatarsus: Length to metatibia: distinctly shorter. Metarsomere 1: Length to following tarsomeres: longer than 2–3 but shorter than 2–4. GENITALIA. Ovipositor: Shape: markedly elongate.

Variability. Except for the size: 6.7–8.2 mm without discernible variability. The male is unknown.

Diagnosis. Agrilus salakot is the smallest species among members of the A. quadripunctatus species-group. See also diagnosis at A. luzonicola and key to species.

Type material. Type locality: Philippines, Palawan, Salakot waterfalls, 800m, 09°42'N, 118°31'E. Type specimens. Holotype ♀, 1 ♀ paratype ( EJCB): “ Philippines, Palawan, 1–21.II. 2000, 800 m, 9°42'N, 118°31E, Salakot waterfalls, E. Jendek leg.” .

Distribution. Philippines (Palawan Island).

Etymology. The specific name is a noun in apposition derived from the type locality “ Salakot ”.

Figures

FIGURE 1. Habitus of species of Agrilus quadripunctatus species-group. A: A. calabai sp. nov., holotype; B: A. jaechi sp. nov., holotype; C: A. luzonicola sp. nov., holotype; D: A. quadripunctatus Deyrolle, 1864, lectotype; E: A. ritavillensis Baudon, 1968, holotype; F: A. salakot sp. nov. holotype.