Eunausibius Grouvelle

Eunausibius Grouvelle Eunausibius Grouvelle 1913: 314. Discussion. Two species originally described in Eunausibius by Parsons (1974) are transferred to Nausibius as follows: Nausibius lophius (Parsons) new combination (= Eunausibius lophius Parsons) and Nausibius salutaris (Parsons) new combination (= Eunausibius salutaris Parsons) and Eunausibius wheeleri Schwarz and Barber, is placed in Coccidotrophus (see above in this paper). The description of one new species discovered during this study makes a total of three within Eunausibius. Diagnosis. Body elongate, moderately cylindrical, total length within species belonging to the genus can show considerable variation; for E. jatahyensis new species, the range of the eight specimens examined (the type series) is 3.71–9.60 mm, and that of seventeen of E. elongatus 3.00– 5.43 mm. Head with deep convergent antennal grooves beneath (Fig. 101). Antenna short with first antennomere hidden beneath genal margin and a gradually to more obviously developed club of four segments. Pronotum with anterior angles not strongly developed but lateral limit either defined by an inward expansion of the lateral pronotal rim joining a short impressed line (Fig. 91, 98–99) or just a small impression on the lateral rim. Males of the three known species with a small metafemoral tooth (see Fig. 103) and metatibiae striate on proximal side. Elytra each with 9 rows of punctures forming striae or punctate striate. Striae terminating before elytral apex, 6 and 7 of equal length and shorter than rest. Eunausibius and Coccidotrophus are similar genera, for comparisons see the genus diagnosis for the latter.
Published as part of Halstead, David G. H., 2020, New and little known Coleoptera (Silvanidae: Silvaninae) from Central and South America, pp. 1-37 in Insecta Mundi 2020 (842) on pages 26-27, DOI: 10.5281/zenodo.5354105
{"references":["Grouvelle A. 1913. Notes sur les Silvanini. Synonymies et descriptions de genres nouveaux et de nouvelles especes. Annales de la Societe Entomologique de France 81: 313 - 386.","Parsons CT. 1974. Two new species of Eunausibius (Coleoptera Cucujidae) from Brazil. Papeis Avulsos Zoologia, Sao Paulo 28 (10): 181 - 184, Fig. 12 - 22."]}