Er. Hoebeke, NEW RECORDS OF IMMIGRANT BARK BEETLES (COLEOPTERA, SCOLYTIDAE) IN NEW-YORK - ATTRACTION OF CONIFER-FEEDING SPECIES TO ETHANOL-BAITED TRAP LOGS, Entomological news, 105(5), 1994, pp. 267-276
A 1993 survey for the recently detected pine shoot beetle, Tomicus pin
iperda, in New York, conducted by Division of Plant Industry field per
sonnel, New York State Department of Agriculture and Markets, has yiel
ded specimens of two other non-indigenous bark beetles (Scolytidae). T
rap logs of Pinus sylvestris and P. resinosa, baited with 95% ethanol,
were placed at 100 sites across New York state, particularly in high
risk areas. Pine shoot beetle was collected at 12 sites in 5 countries
of western New York. Pityogenes bidentatus, a Palearctic species firs
t detected in North America in New York in 1989, was trapped at two ne
w localities in western New York. The European Hylastes opacus, known
previously in North America from a single locality on Long Island, New
York, was trapped at 32 sites in 22 countries throughout the state. L
ocalities for all new records are listed and plotted on distribution m
aps. North American interception records, native distribution, economi
c importance, and diagnostic features for H. opacus are provided, and
an existing key to North American Hylastes is modified to include this
new adventive member of the fauna. Data on relative abundance are pro
vided for other species of conifer-feeding bark beetles that were trap
ped, which included: Dendroctonus terebrans, Dendroctonus valens, Dryo
coetes autographus, Gnathotrichus materiarius, Hylastes porculus, Hylu
rgops rugipennis pinifex, Ips grandicollis, Ips pini, Orthotomicus cae
latus, Pityophthorus sp. prob. puberulus, and Polygraphus rufipennis.