Sibuyanella mimica, Bellamy, C. L., 2005

Bellamy, C. L., 2005, The Philippine Coraebini Bedel, 1921 (Coleoptera: Buprestidae: Agrilini) Part 6: new and resurrected genera and new species, Zootaxa 1038, pp. 23-40 : 25-27

Sibuyanella mimica sp. nov.

( Figs. 3, 4 )

Description of male holotype. Elongate­ovoid, subcylindrical, transversely convex dorsally and ventrally; broadly rounded anteriorly and moderately attenuate posteriorly; length 14.0 mm, width 4.4 mm, widest just posterior to elytral midpoint; dorsal coloration iridescent green on head and pronotum; epipleura, ventral surface and legs a slightly darker bluish green; elytra green with disc reflecting cupreous; elytral spots and fasciae dark blue with light blue margin visible around each; head punctate; pronotum with punctures in striae appearing as contours on elevations; elytra areolate­rugulose; ventral surface punctate medially and on majority of visible surface of abdominal ventrites; lateral thoracic sternites and lateral portion of abdominal ventrites 1 and 2 areolate­rugulose; head, pronotum and elytral sutural area with sparse, irregular distribution of short, recurved dirty­white setae; outer portion of elytral apices with both thin white recumbent setae and very stout black setae; ventral surface with more dense covering of setae on median portion of thoracic ventrites, white setae on lateral portion of thoracic and entire abdominal ventrites finer, more sparse. Head with large eyes, inner margins slightly diverging dorsally; transverse groove entire above antennal cavities; antennal cavities separated by distance slightly greater than individual width; frontoclypeal distal margin broad, feebly angulately emarginate; genal projection acute, with transverse depression at base dorsally, to receive basal antennomeres in repose; antennomeres slender; 1 recurved; 2 elongate, longer than 3; 3 slightly expanded distally; 4 and 5 subserrate; 6–10 serrate, wider than long; 11 oblong. Pronotum with anterior margin very feebly arcuate medially; posterior margin strongly bisinuate on either side of prescutellar transverse median lobe; lateral margins widely arcuate, widest anterior to midpoint, lateroposterior angles strongly obtuse, diverging; margins crenulate; disc with feeble elevations: one just posterior to anterior margin medially; wide medial elevation strongly converging posteriorly to prescutellar lobe width and one small elevation on either side; one short carina extends anteriorly from posterior margin on either side. Scutellum a short trapezoid with arcuate sides and acuminate angles. Elytra slightly narrower opposite humeri than widest portion of pronotum; distribution of maculations as in Fig. 3 ; elytral apices angulate, slightly swollen at angles then strongly converging to separately rounded sutural apices; lateroposterior margin serrulate before angle, irregular from angle to apex; epipleuron wide anteriorly, gradually narrowing, extending to lateroposterior angles. Pygidium not visible from above beyond elytral apex. Prosternum short, with stout, thickened anterior margin; process with wide carinate lateral margins, bisinuate anterior to rounded apex; metacoxal plate with posterior margin trisinuate; abdominal ventrites 1+2 much longer than 3+4+5; 3 and 4 subequal in length; 5 longer than 4, slightly narrowing to wide transverse apex. Femora fusiform; tibiae narrow; metatibiae with setal comb on distal 2/3 of outer margin; tarsomeres 1–4 each short, with large ventral pulvillus; 5 elongate; narrowly separated bifid claws. Genitalia as in Fig. 4 .

Variation. 1 ɗ paratype: length 15.5 mm, width 4.8 mm; with cupreous elytral disc; 2 ΨΨ paratypes: 16.5–17.0 mm, width 5.6–5.8 mm; elytral coloration feebly cupreous to bluish green. These three paratypes have the elytral apices serrate, this trait is not obvious on the holotype.

Specimens examined. Holotype, ɗ (CSCA ex CLBC): PHILIPPINES, Marinduque, 14.xi.1991, native collector; 3 paratypes: 1 Ψ (CLBC): same data except 15.xi.1991; 1 Ψ (TLCS): same data except 14.xi.1996; 1 ɗ (CLBC): Mindoro [ Island, no more specific locality], 13.xi.1992, native collector.

Etymology. This new species’ epithet is chosen to reflect the very similar color pattern and appearance to S. bakeri as well as the putative mimetic condition of these beetles (see above and Bellamy, 1991a).

Remarks. This new species is very similar to S. bakeri , but differs mainly in the number and distribution of elytral maculae, the dual setose condition at the elytral apices and the respective shapes of the elytral apices and aedeagus. This new species is only known from Boac and Mindoro islands.

Figures

FIGURES 1 – 6, Sibuyanella spp. Figs. 1 – 2, S. bakeri (Fisher), 1, dorsal habitus; 2, aedeagus; Figs. 3 – 4, S. mimica, sp. nov., 3, dorsal habitus; 4, aedeagus; Figs. 5 – 6, S. boudanti, sp. nov., 5, dorsal habitus; 6, aedeagus; Fig. 7, Philippscelus panayensis, sp. nov., dorsal habitus; Fig. 8, Lumawigia gibbicephala, gen. & sp. nov., dorsal habitus; scale bars = 1.0 mm.