Curculio lapathi Linnaeus 1758:379

Anderson, Robert S., 1807, A Review of the Genus Cryptorhynchus Illiger 1807 in the United States and Canada (Curculionidae: Cryptorhynchinae), The Coleopterists Bulletin 62 (1), pp. 168-180 : 174-178

Curculio lapathi Linnaeus 1758:379 .

Natural history. This species is the poplar and willow borer of the economic entomological literature (Blatchley and Leng 1916; Garbutt and Harris 1994). Adults and larvae are associated with various species of willow, poplar, alder and birch ( Salicaceae , Betulaceae ). Larvae mine young stems. It is not clear if the species was introduced into North America from Europe or is a native Holarctic species.

Distribution. Fig. 25 . This species is found in the United States in CT, D.C., ID, IL, MA, ME, MI, MN, MT, NC, ND, NJ, NY, OR, PA, SD, UT, WA, WI and in Canada in AB, BC, MB, NB, NF, NS, ON, PE, PQ (O’Brien & Wibmer 1982; Bousquet 1991; specimens examined herein).

Diagnosis. Body length 5.6–8.3 mm ( Figs 7–8 ). Pronotum with distinct tufts of black scales on either side of middle on anterior margin, laterally and on midline just anterior to midlength. Femora each with 2 distinctly separated teeth. Elytra with strial punctures large and deep, at least some wider than width of adjacent elytral intervals; with concentrations of black erect scales on intervals 3 and 5 throughout basal 2/3 of length; apical 1/3 of elytra with bright white scales distinctly contrasting with dark scales on rest of elytra. Male ventrite 5 ( Fig. 14 ) flat, not modified; ventrite 1 longitudinally impressed medially. Aedeagus ( Fig. 19 ).

Specimens examined. CANADA. Alberta. Patricia (10 mi. E.), 16–17.viii.1980, R. Anderson & S. Marshall ( CMNC) . British Columbia. Creston , 28–30.vi.1980, R. Anderson ( CMNC) . Moyie Lake Provincial Park, 21.vi.1980, R. Anderson ( CMNC) . Salmo , 30.vi–3.vii.1980, R. Anderson ( CMNC) . Shuswap Lake , 50 59 9 N 119 06 9 W, 23–31.viii, 1987, J.E. O’Hara ( CMNC) . Yahk , 28.vi.1980, R. Anderson ( CMNC) . Manitoba. Carberry (5 mi. S.), 9.vi.1980, R. Anderson ( CMNC) . Quebec. St-Antoine Ab. Huntington, 15.viii.1978, P. Belanger ( CMNC) . St-Augustin Portneuf , 26.vi.1979, P. Belanger ( CMNC) . Ste-Foy , 1– 8.vii.1975, P. Belanger (3, CMNC) . Berthierville, Berthier , 21.viii.1986, P. Belanger ( CMNC) . Portneuf, Port Rouges , 28.vi.1980, Y.P. Dion ( CMNC) .

UNITED STATES. Idaho. Bonner County, Sandpoint (5 mi. S.), 8.vi.1967, W.F. Barr ( CMNC) . Jefferson County, Mud Lake , 16.vi.1965, R . L. Westcott ( CMNC) .

Montana. Lookout Pass (25 mi. E.), 28.ii.1968, M.M. Furniss ( CMNC) . Utah. Uintah County, Ashley Creek, Merkley Park , 14.viii.1980, S.M. Clark ( CMNC) .

West Virginia. Pocahontas County, Marlinton, 3.viii.1995, S.M. Clark ( CMNC). Roane County , Charles Fork Lake , near Spencer, 25.vii.1996, S.M. Clark ( CMNC) .

21) C. fuscatus ; 22) C. helvus ; 23) C. obliquus ; 24) C. tristis ; 25) C. lapathi .

Figures

Figs. 21–25. Maps of distribution of Cryptorhynchus species by state and province only.

Figs. 7–10. Dorsal and lateral habitus of Cryptorhynchus species. Figs. 7–8) Cryptorhynchus lapathi; Figs. 9–10) Cryptorhynchus tristis. Scale bar 5 1 mm.

Figs. 11–15. Ventrite 5 of male Cryptorhynchus species. 11) Cryptorhynchus fuscatus; 12) Cryptorhynchus helvus; 13) Cryptorhynchus obliquus; 14) Cryptorhynchus lapathi; 15) Cryptorhynchus tristis. Scale bar 5 0.5 mm.

Figs. 16–20. Aedeagus of Cryptorhynchus species. 16) Cryptorhynchus fuscatus. Scale bar 5 0.8 mm; 17) Cryptorhynchus helvus. Scale bar 5 1.0 mm; 18) Cryptorhynchus obliquus. Scale bar 5 1.0 mm; 19) Cryptorhynchus lapathi. Scale bar 5 0.8 mm; 20) Cryptorhynchus tristis. Scale bar 5 0.8 mm.