FIGURE 1 in Ongoing invasions of old-growth tropical forests: establishment of three incestuous beetle species in southern Central America (Curculionidae: Scolytinae)

FIGURE 1. Invasive Asian xyleborine ambrosia beetles in Central American forests. (a–c) Xylosandrus crassiusculus: the shape (a), size (2.2–2.5 mm), and dull declivity with dense long setae and dense, scattered granules (c) are characteristic. (d) Xyleborinus exiguus: note the plain, convex declivity with a distinctive border of large teeth at the apex. (e–h) Euwallacea fornicatus: arrow (g) indicates suture on the posterior face of the antennal club (upper antenna in figure shows anterior face).