Euwallacea


Type species

Xyleborus wallacei Blandford

Adapted from Robert J. Rabaglia et al. 2006, p. 1041-1042


Diagnosis

There are two species of this predominantly Asian genus now established in North America. The two species in North America are distinguished from other Xyleborina by the posterolateral margin of the declivity which is subacutely elevated from the sutural apex to interstriae seven. It can be distinguished from Xyleborus Eichhoff as well from its single recurved suture on its posterior face.


Description

These are species with body lengths of 1.9 to 3.8 mm. They are stout with almost quadrate elytra, with proportions of 1.2 to 1.5 times as long as wide. The color varies from dark brown to black. The pronotum is as long as wide with asperities on the anterior half and a serrate anterior margin. The declivity is strongly convex, margined by a subacutely elevated line from its apex to interstriae 7, and has granules. The vestiture is sparse and consists of erect hair-like setae on interstrial rows. The anterior margin of the compound eye is emarginated. The scape is longer than the 5-segmented funicle (last four segments are almost fused and are hard to distinguish). The club is obliquely truncate and has a single recurved suture on its posterior face. The procoxae are contiguous.


Distribution

Asia; Introduced to Australia, Pacific Islands, Hawaii, Panama, and eastern United States


World fauna

Number of species: 53, Native species: 0, Introduced species: 2


Established exotic species

Euwallacea fornicatus is present in California and Florida.

Euwallacea validus is present in New York, New Jersey, Pennsylvania, Delaware, Maryland, Virginia, West Virginia, North Carolina, and Louisiana.


Hosts

Albizia, Camellia, Hevea, Populus, Robinia, Shorea, Theobroma, Persea, Citrus, Punica