Anthaxia (Haplanthaxia) philippinensis, Bílý & Kubáň, 2012

Bílý, Svatopluk & Kubáň, Vítězslav, 2012, A revison of the genus Anthaxia from the Philippines (Coleoptera: Buprestidae: Buprestinae: Anthaxiini), Acta Entomologica Musei Nationalis Pragae 52 (2), pp. 433-442 : 441-442

Anthaxia (Haplanthaxia) philippinensis sp. nov.

( Figs. 8, 9, 12 )

Type locality. Philippines, Sibuyan island [without exact data].

Type specimens. HOLOTYPE: ♂ ( NMPC): PHILIPPINES: SIBUYAN: “Philippines / Sibuyan [without exact data] / loc[al]. coll[ector]. [leg.] [h]” . ALLOTYPE: ♀ ( NMPC): PHILIPPINES: LUZON: “[Central] Luzon / Laguna [province] / Paete [14º21′N 121º29′E] [p] // ♀ [p]”. PARATYPE: ♂ ( SMTD) : PHILIPPINES: NEGROS: “Cuernos Mts.[= Cuernos de Negros, now Mt. Talinis, ca. 9º15′N 123º11′E] / [SE] Negros, [C. F.] Baker [leg.] [p]”.

Diagnosis. Small (3.6–3.9 mm), convex, matt with silky lustre; vertex, pronotal disc, elytra, legs and antennae black-green, frons, lateral pronotal margins and elytral base golden green, posterior pronotal angles golden-orange (male) or entire dorsal surface black-violet, posterior pronotal angles golden-red and elytral base with green tinge (female); ventral surface black, pleurites with golden orange lustre in both sexes; entire body asetose.

Description (holotype, Fig. 8 ). Head relatively large, as wide as anterior pronotal margin; frontoclypeus very shallowly emarginate anteriorly, frons slightly convex with indistinct postclypeal depression; vertex 0.7 times as wide as width of eye; eyes large, reniform, slightly projecting beyond outline of head; antennae relatively long, reaching posterior pronotal third when laid alongside; scape pyriform, 4 times as long as wide, pedicel ovoid, 1.4 times as long as wide; third antennomere slightly widened apically, 1.8 times as long as wide, fourth antennomere triangular, nearly as long as wide; antennomeres 5–10 trapezoidal, about 1.5 times as wide as long; terminal antennomere rhomboid, nearly twice as long as wide; sculpture of head consisting of dense, fine basal microsculpture and small, polygonal cells with well-developed central grains.

Pronotum moderately convex, 2.2 times as wide as long, with well-developed, wide lateroposterior depressions; anterior margin deeply emarginate with small medial lobe, posterior margin nearly straight; lateral margins moderately arcuate, nearly parallel at middle, posterior angles obtuse; sculpture nearly homogenous consisting of small, polygonal cells with central grains. Scutellum flat, subcordiform, microsculptured.

Elytra regularly convex, 2.2 times as long as wide, subparallel at anterior two thirds, regularly tappering at posterior third; each elytron rounded separately, preapical lateral serration very fine, dense; elytral epipleura well-developed but not reaching elytral apex; humeral swellings small; transverse, basal depression narrow, deep, nearly reaching scutellum; sculpture fine, homogenous, consisting of basal microsculpture and small, rather sparse, shallow punctures.

Ventral surface rather lustrous, abdominal ventrites without distinct sculpture, prosternum and metasternum with rather indistinct ocellate sculpture; anal ventrite widely truncate, without lateral serration. Legs long and slender, mesotibiae straight, metatibiae slightly bent outwards, both without inner serration. Tarsal claws slender, hook-shaped, weakly enlarged at base.

Aedeagus ( Fig. 12 ) rather long, subparallel, parameres only slightly enlarged at midlength; median lobe obtusely pointed apically, with fine, rather sparse lateral serration.

Sexual dimorphism. Except for the colouration (see above), the female ( Fig. 9 ) differs from the male ( Fig. 8 ) by the stouter body, distinctly more convex frons, projecting eyes and by the less truncate, nearly rounded apex of the anal ventrite.

Measurements. Length 3.6–3.9 mm (holotype 3.8 mm), width 1.3–1.4 mm (holotype 1.4 mm).

Etymology. The specific epithet is derived from the country of the origin – Philippines.

Distribution. Philippines (Luzon, Negros, Sibuyan).

Differential diagnosis. Anthaxia (Haplanthaxia) philippinensis sp. nov. somewhat resembles A. (H.) exsul Obenberger, 1914 ( China?) in body-shape and the microsculptured elytra, but strongly differs in the pronotal sculpturing and by the form of the male genitalia. From the sympatric species of the genus Anthaxia it differs by the characters given in the key.

Figures

Figs. 7–14. 7–9 – Habitus. 7 – Anthaxia (Haplanthaxia) palawanensis sp. nov., holotype (♂, 3.6 mm, Palawan); 8 – A. (H.) philippinensis sp. nov., holotype (♂, 3.6 mm, Sibuyan); 9 – A. (H.) philippinensis sp. nov., allotype (♀, 3.9 mm, Luzon). 10–14 – Aedeagi (not in the scale). 10 – A. (H.) palawanensis sp. nov., holotype; 11 – A. (H.) mindanaoensis Fisher, 1922, Mindoro; 12 – A. (H.) philippinensis sp. nov., holotype; 13 – A. (H.) boettcheri Obenberger, 1928, Luzon, Abra province; 14 – A. (H.) attenuata Fisher, 1922, holotype, Negros.