Category: Forests

Pillbug, Roly-Poly, Woodlouse Armadillidium vulgare (Latreille) (Malacostraca: Isopoda: Armadillidiidae)

Figure 1. Pillbug, Armadillidium vulgare (Latreille), rolled into a ball.

The roly poly is an isopod, a type of non-insect arthropod also known as a terrestrial crustacean. It is called a roly-poly because it rolls into ball when disturbed. This defensive behavior also makes it look like a… Read More

Black Turpentine Beetle, Dendroctonus terebrans (Olivier) (Insecta: Coleoptera: Curculionidae: Scolytinae)

Figure 1. Dorsal view of an adult black turpentine beetle, Dendroctonus terebrans (Olivier). Its large size, trapezoidal pronotum, and rounded declivity distinguish it from all other bark beetles infesting pines in the southern United States. Credit: Adam Black and Jiri Hulcr, University of Florida

Black turpentine beetles bore into the inner bark of stressed or injured pines, where they breed and feed on phloem tissue. Adults are strongly attracted to volatile pine odors and readily breed in fresh stumps. In typical forests,… Read More

An ambrosia beetle Xyleborus affinis Eichhoff, 1868 (Insecta: Coleoptera: Curculionidae: Scolytinae)

Figure 1. Adult female Xyleborus affinis. Credit: Jiri Hulcr, UF/IFAS

Xyleborus affinis is one of the most widespread and common ambrosia beetles in the world. It is also very common in Florida. Like other ambrosia beetles, it bores tunnels into the xylem of weakened, cut or injured trees… Read More

Asian Horntail Eriotremex formosanus (Matsumura) (Insecta: Hymenoptera: Symphyta: Siricidae: Tremicinae)

Figure 3. Eriotremex formosanus (Matsumura). A- antenna. B- metatibial spur. Abdomen (C) and mesonotum (D) with long golden setae (hair-like projections). Credit: You Li, University of Florida

Since it was introduced to North America, the Asian woodwasp has become the most common wood wasp in Florida. It is not considered an economically important pest because it only attacks dying or dead trees, but the species… Read More