Agrilus suturistriatus, Jendek, 2017

Jendek, Eduard, 2017, Revision of the Agrilus humilis species-group (Coleoptera: Buprestidae: Agrilini) with description of thirteen new species from Southeastern Asia, Zootaxa 4363 (2), pp. 249-271: 267-268

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Agrilus suturistriatus

sp. nov.

Agrilus suturistriatus   sp. nov.

( Figs. 2F View FIGURE 2 , 5N View FIGURE5 )

Description of holotype. Size: 3.4 mm. Body. Shape: cuneiform; Posterior tapering part: long with narrow apex; Color (dorsally): unicolored. Head. Size: very large; Modification: strongly convex; Medial impression: absent; Epistoma: raised above frons. Frons: Shape: markedly convex. Vertex: Sculpture elements: rugae; Sculpture aspect: arcuate, subparallel; Sculpture density: dense; Sculpture intensity: rough. Eyes: Size: subequal to half width of vertex (dorsal view); Lower margin: in line or below antennal socket; Median orbit: subparallel. Antennae: Length: reach to about anterior pronotal angles; 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. Disk: Convexity: strongly convex; Impressions: medial and lateral; Medial impression: posteromedial only; Lateral impressions (depth): shallow; Lateral impression (width): narrow. Prehumerus: Development: carinal; Shape: straight; Extent: adjoining posterior angle. Lateral carinae: Convergence: moderate; Junction: present; Narrowest point: at posterior 1/5–1/4 of marginal carina. Scutellum: Size: robust. Elytra. Color: unicolored; Humeral carina: absent. Apices: Arrangement: separate; Shape: arcuate. Pubescence: Character: homogenous; Extent: perisutural stripes, sutural wedge. Sternum. Prosternal lobe: Distal margin: arcuately emarginate; Emargination (depth): shallow; Emargination (width): wide. Prosternal process: Shape: subparallel; Sides: straight; Angles: obtuse; Disc: impressed; Projection (length): protruding distinctly beyond angles. Metasternum: Metasternal projection: flat. Abdomen. Pygidium: Apical margin: arcuate. Sternal groove: Extent: on three apical ventrites; Shape on apex of last ventrite: arcuately sinuate; Sinuosity (delimitation): angulate; Sinuosity (depth): markedly deep; Sinuosity (width): markedly wide. Legs. Metatarsus: Length to metatibia: distinctly shorter. Tarsomere 1: Length to following tarsomeres: shorter or subequal to 2–3. Genitalia. Aedeagus ( Fig. 5N View FIGURE5 ): Symmetry: symmetric; Shape: widest in apical part.

Variability. Unknown. Sexual dimorphism. The male without apparent sexual adaptations. The female is unknown.

Diagnosis. See key and diagnosis at Agrilus sphenopterus   sp. nov.

Type material. Type locality: Indonesia, Riau, Eastern Sumatra, Bukit Tigapuluh National Park [00°50'00”S, 102°26'00”E]. Type specimens. Holotype ♂ ( FWPC): “E Sumatra, Riau prov. , Bukit Tigapuluh N.P., 0°50'S, 102°26'E, J. Bezděk leg., 18–25.i.2000 ”. GoogleMaps  

Distribution. Indonesia: (Riau).

Etymology. The specific name is a combination of the Latin nouns sutura (seam) and stria (stripe). It refers to the elytral pubescence of this species.