Hypothenemus foelkelae Atkinson and Flechtmann, 2021

Atkinson, Thomas H. & Flechtmann, Carlos A. H., 2021, New species, new records and synonymy of Brazilian species of Hypothenemus Westwood, 1834 (Coleoptera: Curculionidae: Scolytinae), Insecta Mundi 2021 (846), pp. 1-33 : 19-22

Hypothenemus foelkelae Atkinson and Flechtmann , new species

Fig. 12

Diagnosis. This species would key out easily to couplet 15 in Wood’s (2007) key at which point it would not proceed further. Like those species keyed out in the first half of the couplet, vestiture is restricted to erect interstrial setae and recumbent, hair-like, uniseriate strial setae. It differs from all other species beyond that point in the key in that the erect interstrial setae are clearly confused on all interstriae except for the first. The following description is based on the unique holotype.

Female. Total length: 2.3 mm, maximum width: 0.95 mm, length of elytra: 1.5 mm, total length / width: 2.42, elytra length / total length: 0.65, pronotal length / width: 0.84.

Frons convex, evenly rounded, surface shining, finely reticulate with a few scattered, shallow punctures associated with fine, hair-like setae. The antennal flagellum consists of four segments (in addition to the pedicel). The club is oval, slightly less wide than the compound eye, with two clearly marked transverse sutures.

Anterior margin of pronotum with six closely spaced asperities, the middle pair slightly larger. Anterior slope with numerous, sharp asperities (20–30); surface granulate-reticulate, with abundant hair-like setae. Summit clearly defined, but not elevated, located at midpoint of pronotum. Disc moderately punctured, smooth and shining between punctures, vestiture mixture of hair-like and scale-like setae.

Discal striae moderately impressed, punctures close, spaced within row by less than their diameters, each associated with a fine, recumbent, hair-like seta. Interstriae shining, roughly 2× as wide as striae. Vestiture of erect, spatulate setae, confused on all interstriae except the first, these spaced within rows by less than their length.

Declivity smoothly convex. Striae more strongly impressed than on disc, subequal in width to interstriae, punctures associated with fine, recumbent setae. Erect, spatulate setae on interstriae slightly longer than on disc, uniformly uniseriate in contrast to discal arrangement.

view. C) Frontal view. D) Posterolateral view. Photos by T.H. Atkinson.

Male. Unknown.

Type material. Holotype female: Brazil: Santa Catarina: Água Doce, linha Nova Concórdia, property Vitalino Brugnara , mixed ombrophilous forest fragment, 27°00′38.61″S 51°31′05.14″W, ethanol-baited flight intercept trap, 8-X-2011, E. Foelkel ( MEFEIS).

Etymology. This species is named for the collector of the type species, Ester Foelkel, Grau Celsius Negócios em Gestão do Conhecimento LTDA.

Figures

Figure 12. Hypothenemus foelkelae new species, female holotype. A) Dorsal view. B) Lateral