Hypothenemus murariae 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 : 9-11

Hypothenemus murariae Atkinson and Flechtmann , new species

Fig. 5

Diagnosis. As with the two previously described species this will key out to couplet 10 in Wood’s 2007 key. It differs from these and related species by the spatulate, confused interstrial setae on the disc and declivity.

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

Female. Total length: 2.3 mm, maximum width: 1.0 mm, length of elytra: 1.5, total length / width: 2.30, elytra length / total length: 0.65, pronotal length / width: 0.80.

Frons convex; central area from above level of eyes to epistoma smooth, sparsely punctured, peripheral areas faintly strigose. Vestiture of sparse, hair-like setae. Antennae missing from unique holotype, presumably like that of related species.

Pronotum with two prominent teeth on the anterior margin, with 10–12 teeth on the anterior slope, vestiture of hair-like setae. Summit prominent, but not elevated, about ½ distance from anterior to posterior margins, without posteriorly directed extensions or carina. Disc smooth, shining; punctures deep, separated by greater than their diameters. Vestiture of disc a mixture of hair-like and scale-like setae.

Discal striae not impressed, interstriae 3× width of striae, smooth, shining. Interstrial vestiture of erect spatulate setae, rounded apically, their length less than interstrial width, mostly uniseriate, near base, becoming confused towards declivity. Strial setae short, hair-like, recumbent.

Declivity evenly convex, rounded; interstrial setae longer than on disc, almost as wide as interstriae, setae definitely confused on interstriae 2 and higher. Strial setae similar to those on disc.

Male. Unknown.

Type material. Holotype female: Brazil: Río Grande do Sul: Butiá, Empresa Seta, Fazenda Menezes , 4-year old Acacia mearnsii stand, 30°13′57.2″S 51°58′29.9″W, ethanol-baited flight intercept trap; 12-X-2004, FIT, A.B. Murari ( MEFEIS, 1). Known only from the holotype.

Etymology. This species is named for Augusto Bolson Murari, in memoriam, a former master’s student at Universidade Federal de Santa Maria, state of Rio Grande do Sul, and who collected the only known specimen.

Figures

Figure 5. Hypothenemus murariae new species, female holotype. A) Dorsal view. B) Lateral