Agrilinae Laporte, 1835

Bellamy, C. L., 2008, A new monotypic genus of ant-mimicking Coraebini (Coleoptera: Buprestidae: Agrilinae) from Madagascar, Zootaxa 1817 (1), pp. 65-68 : 65-66

Subfamily Agrilinae Laporte, 1835

Tribe Coraebini Bedel, 1921

Subtribe Toxoscelina Majer , in Kubá ň, et al., 2001

Madecorformica , gen. nov.

Type species: Madecorformica silhouetta , sp. nov. (present designation).

Description. Myrmecomorphic; small, elongate-ovoid, subcylindrical; head with frontovertex broad, depressed between eyes; eyes large, inner margins diverging dorsally; circumocular groove along inner margin extending more than half of eye circumference; supra-antennal groove above large antennal cavities; antennal cavities narrowly separated; clypeal margin emarginate; gena with shallow transverse depression for receiving basal antennomeres in repose; distal margin of gena broadly rounded; antennae serrate from antennomere 5; pronotum slightly wider than long, wider in anterior half, narrowing to posterior margin; anterior margin feebly convex; posterior margin bisinuate on either side; disc transversely convex on anterior half, otherwise flattened posteriorly, laterally; lateral margin entire; one premarginal carina on either side; scutellum cordiform; elytra much wider than pronotal posterior margin; humeri strongly elevated; lateral margin biarcuate, narrowing medially, apices separately rounded; disc transversely convex; epipleuron entire, widest, with margin subparallel to elytral margin, in anterior half; pygidium not visible beyond elytra, with apical margin entire; proven-

1. Seventh contribution to the knowledge of Madagascar Buprestidae trite with short, feebly bilobed mentonniere; disc transversely convex; process broad, subparallel between procoxae, apex feebly trilobed; abdominal ventrites expanded laterally, ventrite 2 wider than 1 or 3–5, widest medially, pleurite 2 visible from above; ventrite 5 entire, without sexual morphology; legs with tibiae flattened, having arcuate outer edge; tarsi with tarsomeres 1–4 with ventral pulvilli; tarsal claws appendiculate.

Etymology. The feminine genus-group name is a combination of the roots: mad (for Madagascar), cor (for Coraebini ) and formica (for Formicidae , ants) to describe the ant-like appearance.

Remarks. With such a large proportion of the Madagascan Coraebini still undescribed ( Bellamy, 2001a), the tradition of providing a diagnosis to distinguish this new genus from a sister-taxon is currently impossible. From the described Madagascan genera, Madecorformica can be distinguished from Entomogaster by character states given in Table 1. Entomogaster (type species: Anthaxia sexpunctatus Gory & Laporte, 1839 , fixed by monotypy) is currently defined to include 20 species, although there are likely tens or more undescribed species awaiting study and revision.

Entomogaster Saunders, 1871 Madecorformica , gen. nov.

Dorsal vestiture concentration of variously colored (e.g. pattern of black, grey and white on elytral whites, yellows) setae in pronotal & elytral surface, not impressed or in depressions foveae, fasciae and vittae

Antennal serration triangularly serrate starting on antenno- triangularly serrate starting on antennomeres 3, 4 or 5 mere 5

Pronotal shape, proportions lateral margins regularly arcuate, widest at lateral margins arcuate, widest at midpoint or slightly posterior to midpoint

Pronotal vs. elytral width pronotal width approximately equal of posterior pronotal width strongly nar-

elytra across humeri rowed, much narrower than elytral width across humeri

Elytral humeri barely elevated above surface of disc with strongly angulate, narrowly produced above surface of disc