Chrysolina marginata (Linnaeus, 1758)**

Webster, Reginald P., LeSage, Laurent & DeMerchant, Ian, 2012, New Coleoptera records from New Brunswick, Canada: Megalopodidae and Chrysomelidae, ZooKeys 179, pp. 321-348 : 326

Chrysolina marginata (Linnaeus, 1758)** Map 5

Material examined.

New Brunswick, Queens Co., Cranberry Lake P.N.A. (Protected Natural Area), 46.1125°N, 65.6075°W, 18.VI.2009, R. Webster & M.-A. Giguère, red oak forest, sweeping foliage (in area with Leucanthemum vulgare Lam.) (1, AFC). Northumberland Co., Blueberry Rd. off Hwy 8, 47.3211°N, 65.4223°W, 29.VI.2007, R. P. Webster, jack pine forest with black spruce, on Leucanthemum vulgare Lam. (1, CNC, RWC). York Co., New Maryland, 45-50.50°N, 66-43.93°W, 5.IX.2002, R. P. Webster (1, CNC). Charters Settlement, 45.8395°N, 66.7391°W, 20.X.2004, 20.X.2004, 26.IX.2005, 21.X.2005, 28.IX.2006, R. P. Webster, (on pavement of street) (1, CNC, 2, RWC); 15.0 km W of Tracy off Rt. 645, 45.6837°N, 66.8809°W, 16.VI.2007, R. P. Webster, red pine forest, on Leucanthemum vulgare Lam. (1, CNC, 1, RWC).

Collection and habitat data.

Adults from New Brunswick were collected from the foliage of Leucanthemum vulgare Lam. (ox-eye-daisy) in open disturbed roadside sites near a red pine ( Pinus resinosa Ait.) and a jack pine ( Pinus banksiana Lamb.) forest. Specimens were also collected in the late fall on a paved road during warm afternoons. Adults were collected during June, September, and October.

Distribution in Canada and Alaska.

AK, YT, NB ( Riley et al. 2003). The population in New Brunswick is likely an adventive Palaearctic species known from Europe, Siberia, the Far East, and Alaska ( Bieńkowski 2001).

Comment.

Chrysolina finitima Brown, 1962 was placed in synonymy with Chrysolina marginata marginata (Linnaeus) by Bieńkowski (2001: 152), a synonymy accepted by Riley et al. (2003) in their catalog. It makes sense for specimens from Alaska or Yukon to belong to the nominal Palaearctic subspecies since this state and province can be considered as the easternmost part of the natural distribution of Chrysolina marginata that extends over the Bering Detroit into the New World. On the other hand, the presence of Chrysolina marginata in New Brunswick is not natural and is undoubtedly the result of a recent introduction into eastern Canada, which is not yet fully documented (LeSage, personal observations). Considering that there are nine Palaearctic subspecies ( Bieńkowski 2011), it might be advisable not to use a subspecies name until our eastern population can be properly assigned to a subspecies.