JOURNAL ARTICLE

Emergence, trapping, and seasonal abundance of adult Cerambycidae (Coleoptera) associated with Cupressaceae in Connecticut

Chris T Maier
Journal of Economic Entomology 2008, 101 (2): 430-7
18459408
Emergence, attraction to traps, and seasonal abundance of cerambycids (Coleoptera) whose larvae injure Cupressaceae were studied under natural conditions in southern Connecticut between 1999 and 2005. Adults of the Asian cerambycid Callidiellum rufipenne (Motschulsky) emerged from trunk sections of Thuja occidentalis L. between late March and mid-May. In contrast, the native Atimia confusa confusa (Say) emerged from trunk sections of Juniperus virginiana L. between late August and mid-October. Emerged adults of both cerambycids had a 1:1 sex ratio, and the emergence of Callidiellum rufipenne showed protandry. In a comparison of four trapping methods, sticky bands stapled to trap logs and dead trees of J. virginiana had the highest density of adults of A. confusa confusa and Callidiellum rufipenne. Based on adults trapped on sticky bands on trap logs, dead trees, or girdled trees of J. virginiana or T. occidentalis at different locations, Callidiellum rufipenne was active on hosts for 5-8 wk between April and June; Semanotus ligneus ligneus (Say) for 4 wk in April; Callidium frigidum Casey for 5 wk between early May and early June; and A. confusa confusa for approximately 12 wk between April and early July and again for 2-5 wk between September and late October. Catches of A. confusa confusa were significantly female-biased. Number of beetles captured usually was not correlated with the size of the sticky band on trap logs, cut trees, or girdled trees. This is the first quantitative study on emergence, trapping, and seasonal abundance of cerambycids associated with Cupressaceae in northeastern North America.

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