The immigrant leptopodid, Patapius spinosus (Rossi), in Oregon (Hemiptera : Heteroptera : Leptopodidae)

摘要

Usinger (1941. Bull. Brooklyn Entomol. Soc., 36: 164-165) first reported this non-indigenous species from North America, based on specimens from California. Brothers (1979. Great Basin Nat., 39: 195-196) published on its occurrence in Idaho and Nevada and included a drawing of the adult. Recently, Zack et al. (2001. Pan-Pac. Entomol., 77: 47-50) added Washington as a locality and provided observations on the habitat and habits of this remarkable bug in eastern Washington. The collections of the Oregon Department of Agriculture, Salem, Oregon, contain a specimen of Patapius spinosus (Rossi) with the following information on it: OR, Rogue River, 10 III 1959, under pine bark, K. Goeden coll. Also included in their collection are specimens bearing the following information: CA, Glenn Co., Willows, 12 XII 1962, under boards, Haig Dudley coll. Previously, I have seen many specimens from a xeric site in California where specimens were collected beneath the loose bark of a dead, fallen tree--far from any water. Lindskog (1995. pp. 137-140. In Aukema & Rieger (eds.). Cat. Heter. Pal. Reg. 222 pp.) indicated that species of Patapius Horvath may be found under the bark of trees well removed from water: species of other genera of Leptopodidae are known to live in habitats much like that of species of Saldidae--close to water. The movement of grape stock in the earlier days of California grape cultivation was a possible source of individuals of this predatory bug. Subsequent movement of grape stock and other vegetative and road building materials (see Zack et al. 2001) likely contributed its further distribution in western North America. It may be expected in other disturbed sites throughout the region. Acknowledgment.--My thanks to J. LaBonte, O.D.A., for the information of the Oregon specimen.