Euwallacea posticus (Eichhoff)

Gomez, Demian F., Johnson, Andrew J. & Hulcr, Jiri, 2020, Potential pest bark and ambrosia beetles from Cuba not present in the continental United States, Florida Entomologist 103 (1), pp. 96-96 : 96-

Euwallacea posticus (Eichhoff) ( Coleoptera : Curculionidae ) ( Fig. 2 )

Xyleborus posticus Eichhoff ( Coleoptera : Curculionidae )

Diagnosis: This species is distinguished from other Euwallacea by dull and steep elytral declivity, weakly impressed striae, and interstriae bricius) (both Coleoptera : Curculionidae ), distinguished by the genuslevel characters. Euwallacea posticus has a subquadrate pronotum, versus evenly rounded in both X. affinis and X. volvulus .

Distribution: Caribbean: Cuba (Cienfuegos Province, Sancti Spiritus Province), Dominica, Guadeloupe, Puerto Rico, Saint Lucia; Central America: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicara- gua, Panama; North America: Mexico; South America: Argentina, Bo- livia, Brazil, Colombia, Ecuador, Peru, Trinidad, Venezuela.

Hosts: polyphagous, with several records in the families Agavaceae , Anacardiaceae , Cupressaceae , Cyrillaceae , Lecythidaceae , Mimosace- ae, Moraceae , Papilionaceae , Piperaceae , Rubiaceae , Rutaceae , Ster- culiaceae, Tiliaceae .

Notes: Like other Euwallacea species, E. posticus is xylomycetophagous and colonizes a large number of hosts commonly found in injured, broken, or fallen branches and logs of wet forests ( Wood 2007). Pérez- De La Cruz et al. (2009) and Mazón et al. (2013) recorded this species associated with cacao plantations in Mexico and Venezuela; Coto et al. (1995) recorded it as a pest of Citrus ( Rutaceae ) spp. in Central America. The species is widespread, but there is considerable varia- tion between specimens from different locations that may represent cryptic species.

Figures

Fig. 2. Dorsal and lateral view of female Euwallacea posticus. Scale bar: 1 mm.