Evaluation of the Japanese Laricobius sp. n. and other natural enemies of hemlock woolly adelgid in Japan

Ashley Lamb; Shigehiko Shiyake; Scott Salom; Michael Montgomery; Loke Kok

Treesearch

Evaluation of the Japanese Laricobius sp. n. and other natural enemies of hemlock woolly adelgid in Japan

Informally Refereed

Authors:

Ashley Lamb, Shigehiko Shiyake, Scott Salom, Michael Montgomery, Loke Kok

Year:

2008

Type:

Other

Station:

Northern Research Station

Source:

In: Onken, Brad; Reardon, Richard, comps. Fourth Symposium on hemlock woolly adelgid in the eastern United States; 2008 February 12-14; Hartford, CT. FHTET 2008-01. Morgantown, WV: U.S. Forest Service, Forest Health Technology Enterprise Team: 29-36.

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Abstract

Since the initial importation of the Japanese Laricobius (Coleoptera: Derodontidae) to Virginia in 2006, we have studied the development of the predator at two different temperatures, measured feeding and oviposition rates, conducted preliminary host-range testing, and reared two generations. During this time, we have learned this predator differs from Laricobius nigrinus (Fender) in biology and life cycle. Host range tests have been relatively inconclusive, and laboratory survival has been low. These results prompted further investigation of this Laricobius beetle and hemlock woolly adelgid in Japan.

Citation

Lamb, Ashley; Shiyake, Shigehiko; Salom, Scott; Montgomery, Michael; Kok, Loke. 2008. Evaluation of the Japanese Laricobius sp n and other natural enemies of hemlock woolly adelgid in Japan. In: Onken, Brad; Reardon, Richard, comps. Fourth Symposium on hemlock woolly adelgid in the eastern United States; 2008 February 12-14; Hartford, CT. FHTET 2008-01. Morgantown, WV: U.S. Forest Service, Forest Health Technology Enterprise Team: 29-36.