Three new species from Guatemala are described and illustrated: Ectenessa canoi sp. nov. (Ectenessini), Petén; Oxycoleus schusteri (Oxycoleini), Izabal; Odontocera nigroaurantia (Rhinotragini), Petén. Distinguishing characters closely related provided.

Adult male Neoclytus mucronatus mucronatus (F.) (Coleoptera: Cerambycidae: Cerambycinae) were observed to display behaviors identical to calling behaviors of the congener N. acuminatus acuminatus F., males of which produce an aggregation pheromone. Odors collected from male N. m. mucronatus contained one major male-specific compound, identified as ( R )-3-hydroxyhexan-2-one. Bioassays determine...

The mortality of naked Anoplophora glabripennis Motschulsky (Coleoptera: Cerambycidae) larvae exposed to ethanedinitrile (cyanogen; C2N2) varied with temperature, time of exposure, and dose of ethanedinitrile. The concentration x time (Ct) product of ethanedinitrile over a range of temperatures (4.4, 10.1, 15.6, and 20.1 degrees C) decreased with increasing temperature, for both 3- and 6-h expo...