CHRYSOMELIDAE, Latreille, 1802
treatment provided by
Calligrapha philadelphica (Linnaeus) . Wallowa Co., Imnaha, 6V76, KJG; Hells Can., Camp Creek to Lookout Creek, 911V91, RLW.
** Cassida rubiginosa (Müller) . This introduced European species feeds on various thistles and appears to have only recently moved into Oregon. Columbia Co., Sauvie Island , 45.74019°, 122.83509°, 31V2005; Multnomah Co. , ~ 2 mi NW Banks, Sell Rd. , 45.65114°, 123.13671°, 27IV2005 and Sauvie Island, 45.71834°, 122.83560°, 12V 2005, all on Canada thistle, R. A. Worth, M. Peters .
** Chaetocnema concinna (Marsham) . Marion Co., 3 mi E Mt. Angel, 1X2004, feeding on leaves of strawberry, J. Bernard, J. Todd (ODAC, OSAC, WFBM, USNM). This is a new western U.S. record. This species was first reported in North America by Hoebeke (1980), based on a specimen collected in Massachusetts in 1979. James Todd, a consulting entomologist, reported (in litt.) that in western Oregon the adults occur during late summer and early fall. Leaf damage was observed first during fall, 2003, with more severe damage in 2004; there was no evidence of plant damage that might be attributable to larvae, none of which have been found; and strawberry plantings in the Willamette Valley have been sampled on a regular schedule for 25 years. Thus, it seems that this is a relatively recent introduction into the area. Chaetocnema concinna is a Palaearctic immigrant recorded from eastern Canada, the northeastern U.S., and Texas; and is recorded from plants in 10 families. Probably all do not serve as larval hosts, including strawberry (Fragaria) which is in Rosaceae . It seems to favor hosts in Chenopodiaceae and Polygonaceae and, in its native range, is injurious to crops (but apparently not strawberry) ( LeSage 1990, White 1996, Riley et al. 2003, Clark et al. 2004).
Chaetocnema labiosa White. Harney Co. , 40 mi E Burns, 8VII66, ex rabbitbrush, KJG.
Crepidodera opulenta (LeConte) . Baker Co., Baker, 4VI59, on willow, KJG; Jackson Co., Ashland, 14V52, J. E. Davis; Lake Co., Buck Creek, 22V52, Black & Davis; Umatilla Co., 10 mi W Langdon Lake, 4VI64, on willow, KJG; Wallowa Co., 7 mi W Wal
lowa, 17V49, J. E. Davis. Parry (1986) recorded this species from no farther north than northern California. Because of taxonomic confusion in this genus, it seems probable that some specimens treated under C. nana (Say) by Hatch (1971) represent C. opulenta .
Cryptocephalus confluentus confluentus Say. Harney Co. , 5 mi N Alvord Ranch, 23IX 71; Pike Creek, 8.5 mi NE Andrews, 4IX75; 10 mi SE Princeton, 28VII76; 10 mi S Fields, 16VII78, KJG; 3 mi S Fields, 15VII76; SE Sec.32, T39S, R35E, Arizona Creek, 7VI78, RLW (ODAC). Wheeler Co., Ochoco Summit, 30VII72, Musgrave (OSAC).
Diabrotica virgifera virgifera LeConte. The first Oregon specimens of this pest, known as the western corn rootworm, were taken on a yellow sticky trap placed in field corn, Malheur Co., 2 mi S. Weiser Jct., midVIII to late IX85, KJG. Although the specimens may be lost, records in the ODAC confirm this find with a determination made by RLW. This insect has been known to occur for many years in adjacent SW Idaho. According to Ben Simko (personal communication) it occasionally causes damage to corn in that area.
Neochlamisus moestificus (Lacordaire) . This species, widely ranging in the U.S. and Mexico, was first recorded from Oregon by Karren (1972) without full data. The record was based on a specimen from Wheeler Co., Mitchell, 9IX68, RLW, on Eriogonum microthecum Nuttall. Others from that locality were collected 15VIII75, RLW & RLP; Malheur Co., 17.7 mi SW Owyhee, 29VII71, RLP & RLW, on E. microthecum and 15 mi SW Adrian, 31V73, KJG.
** Oulema melanopus (Linnaeus) . Commonly known as the cereal leaf beetle, an economic pest of considerable concern, Riley et al. (2003) recorded it from Oregon without specific data. This exotic was found for the first time in Oregon, Malheur Co., vic. Nyssa, Sec. 4, T19S, R47E, 21/27IV99; vic. Ontario, Sec. 22, T18S, R47E, 27IV99, swept from winter wheat, B. Simko (ODAC, OSAC); and Adrian, 16VI99, ex. oats, B. Bai. Later, survey and other collections by ODA staff provided the following county records: Baker Co., Wingville, NE, NE Sec. 27, T8S, R39E, 1VI99; Benton Co., Philomath, 18 VII2001; Crook Co., vic. Prineville, 7VI2002, spring wheat; Deschutes Co., Terrebonne, 44°21.037, 121°19.597, 15VII2003, sweeping wheat; Jefferson Co., near Culver, 10/ 18VI2003, wheat; Lincoln Co., Lincoln City, Nelscott, SW Sec. 22, drift line on beach, 10IV2004: Linn Co., near Scio, on oats, 26VI2002; Marion Co., S. Salem, I5 and Commercial St., 11VIII2002, on side of house; Multnomah Co., Sauvie Is., 16VII 99, oats; Polk Co., Rickreall, SE Sec. 28, T7S, R4W, 5VII2001; Tillamook Co., near Cloverdale, 18VII2002 (larva), oats; Union Co., 2 mi NE & 4 mi N of Island City, 14VI 99, Umatilla Co., SW, SW Sec. 3, T1N, R32E, vic. McKay Res., 22VI99, on wheat; Wallowa Co., near Joseph, 5VII2001 (larva); Washington Co., Cornelius, 14VII99, Gaston, 13VII99 and vic. Banks, 7VII99, oats; Yamhill Co., ca. 1 mi NE Yamhill, 28VII 99, oats (ODAC, OSAC). It was also collected on native bunch grass at Leslie Gulch, Malheur Co., 18IX2001, RLW.
Pachybrachis analis LeConte. Josephine Co., Rough & Ready Botanical Wayside, 17 VI71, FPL; 2 mi NE of O’Brien, 30VI67; Malheur Co., 25 mi S Adrian, 26III70, KJG.
Pachybrachis californicus Fall. Jackson Co., Hwy. I5 & Calif. border, 29V80, on Ceanothus integerrimus ; Josephine Co., Rough & Ready Botanical Wayside, 27V80; Klamath Co., Klamath Falls, StewartLennox, 6VI72, dead twigs Purshia tridentata , all RLW.
Pachybrachis hepaticus (Melsheimer) . Union Co., North Powder, 1VII64, sweeping margin of pond, KJG. We find it odd that this extremely widespread species has not previously been recorded from Oregon.
Pachybrachis jacobyi Bowditch. Harney Co., T 36S, R35E. SE Sec.8, 20VII79, ex Chrysothamnus viscidiflorus [now placed in the genus Ericameria]; T41S, R36E, Sec.7, 1 VII79, ex Atriplex confertifolia ; T34S, R35E, NW Sec. 10, 13VII79, ex Distichlis stricta, Lightfoot & Cobb ; Tum Tum Lake, T39S, R35E, Sec.35, ex Sarcobatus vermiculatus , 1IX78, N. Cobb; Malheur Co., Ancient Lake well, T35S, R37E, Sec.27, 30VIII78, ex Halogeton glomeratus, D. C. Lightfoot (OSAC) .
Pachybrachis lustrans LeConte. Jackson Co. , 8 mi NE Gold Hill, 9VII69; 14 mi NE Gold Hill, 22VI/10VII69 and 9VII78; Josephine Co., 10 mi N Grants Pass, 6VII69, most on Ceanothus cuneatus , all RLW; Rough & Ready Cr., 2 mi N O'Brien, 4VI59, FPL.
Pachybrachis mercurialis Fall. Deschutes Co. , 15 mi E Sisters, 24VIII67; Harney Co., 40 mi E Burns, 8VII66; Lake Co., Beatty, 4VIII66; Malheur Co., 5 mi NW Ontario, 14 VI67, all on rabbitbrush, KJG.
Pachybrachis quadratus Fall. Curry Co. , 4 mi NE Marial, Quail Creek, 6VIII70; Old Long Ridge Rd., 24 mi NE Brookings, 7X70; Umatilla Co., Umatilla, 1VII70, on Salix sp., KJG; Wheeler Co., Mitchell, 15VIII75, Eriogonum microthecum, RLW & RLP.
Systena blanda (Melsheimer) . Harney Co., Riley, 22VII67; Warm Sprs. Res., 8VIII 73, KJG; Lake Co., 8.4 mi S Lakeview, 28IX78, ex alfalfa, RLP; Malheur Co., McDermitt, 25VI59, H. Foster.
Systena dimorpha Blake. A series of 25 specimens was taken in Harney Co., Warm Sprs. Res., 8VIII73, KJG.
Systena laevis Blake. Harney Co. , 40 mi E Burns, 8VII66, rabbitbrush, KJG.
Trirhabda borealis Blake. Wallowa Co. , 5VIII59, goldenrod, KJG.
Departamento de Geologia, Universidad de Chile
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