New records of Cerambycidae ( Coleoptera ) for New Brunswick , Nova Scotia , and Prince Edward Island , Canada

Forty-eight species of Cerambycidae are newly recorded for New Brunswick, six species are newly recorded for Nova Scotia, and fi ve species are newly recorded for Prince Edward Island for a total of 59 new provincial records. Of these, 22 species are newly recorded for the Maritime Provinces as a whole and three species and one subspecies, Brachyleptura circumdata (Olivier), Acmaeops discoideus (Haldeman), Oberea myops Haldeman and Leptura obliterata deleta (LeConte), are newly recorded for Canada.


Introduction
recorded 51 species of Cerambycidae from Nova Scotia. Mc-Corquodale and Bondrup-Nielsen (2004) added another 36 species and pointed out the importance of regional collections as a source of important baseline biodiversity data.Another species was added by Smith and Hurley (2006), bringing the total number of species known from Nova Scotia to 88.Only 11 species of Cerambycidae were recorded from Prince Edward Island in McNamara (1991).Th is number was

Results
Our investigations have resulted in the discovery of 48 species of Cerambycidae new to New Brunswick, including two species and a subspecies new to Canada, six species new to Nova Scotia, including one species new to Canada, and fi ve species new to Prince Edward Island (Table 1).Species with an ** are newly recorded from the Maritime Provinces.Species or subspecies with an *** are newly recorded from Canada.Th is is the fi rst record for Canada of a species that appears to be rare throughout its range.Th is species is associated with pines (Yanega 1996).Th ese represent the fi rst records of species from Canada.Brachyleptura circumdata (Olivier) was common on fl owers in silver maple fl ood plain forests.Yanega (1996) noted that the larval hosts are spruce, and possibly pine.Spruce occurred several kilometers from the sites where this species was most abundant.
Th is subspecies of a more common western species, is considered to be very rare and was previously known only from a few states in the northeastern U.S.A. (Yanega 1996).Th is specimen represents the fi rst record of this subspecies in Canada.45.8395°N, 66.7391°W, 28.VI.1996, 3.VIII.2004,R.P. Webster, mixed forest, on fl owers of Spiraea alba (5, NBM, RWC).
Th e Grand Lake Lowlands (Hinds 2000) (near Grand Lake and the middle areas of the Saint John River valley of New Brunswick) is characterized by seasonally fl ooded marshes, alluvial fl oodplain forests dominated by silver maple (Acer saccharinum L., Aceraceae), with butternut (Juglans cinerea L., Juglandaceae), bur oak (Quercus macrocarpa Michx., Fagaceae), and basswood (Tilia americana L., Tiliaceae) on higher ground, and the warmest climate in New Brunswick (Hinds 2000).Red oak (Quercus rubra L., Fagaceae) stands occur on some of the higher sandy ridges in this area.Silver maple forests which are absent from Nova Scotia, are more characteristic of fl oodplain forests of the lower Saint Lawrence River valley and more southern areas of New England.Some of the plants recorded from this ecozone are at the northeastern limits of their ranges, and in a few cases are disjunct from more southern populations in southern Nova Scotia, central Maine, or the lower Saint Lawrence River valley of Quebec (Hinds 2000).Twelve species of Carabidae have been recorded solely from this ecoregion in New Brunswick and the Maritime provinces (Webster and Bousquet 2008).It is therefore not surprising that Callimoxys s. sanguinicollis, Purpuricenus humeralis, Astylopsis collaris, and Sternidius misellus, species more characteristic of southern Ontario and southern Quebec, were found in this region of New Brunswick.One species, Brachyleptura circumdata, was newly recorded for Canada from the Grand Lake Lowlands ecozone.
Adjacent to and west of the Grand Lake Lowlands is the Saint John River Valley Hardwood Forest (MacDougall and Loo 1998), sometimes referred to as the Rich Appalachian Hardwood Forest, associated with the central Saint John River valley and its tributaries in western New Brunswick and Maine.Th is forest type occurs mostly on rich calcareous soils and probably has the most diverse fl ora of any forest type in New Brunswick (MacDougall and Loo 1998).Common tree species include sugar maple (Acer saccharum Marsh., Aceraceae), American beech (Fagus grandifolia Ehrh., Fagaceae) especially on the drier slopes, white ash (Fraxinus americana L., Oleaceae), yellow birch (Betula alleghaniensis Britt., Betulaceae), ironwood (Ostrya virginiana (Mill.)K. Koch, Betulaceae), and eastern hemlock (Tsuga canadensis (L.) Carr., Pinaceae) on shaded slopes.Basswood, and butternut are often frequent in and near seepage areas, which often have a species-rich assemblage of rare plant species.Many of the plant species occurring in this forest type are disjunct from the nearest populations in southern Maine and south central Quebec (MacDougall and Loo 1998).Several species of Carabidae and Dytiscidae, including one dytiscid species new to Canada [Hydrocolous fi liolus (Fall)] have only been recorded in the Maritime Provinces from this forest type (Meduxneakeag River Valley Nature Preserve, Bell Forest) in western New Brunswick (Webster 2008;Webster and Bousquet 2008).In this study, the only known occurrences in the Maritime Provinces of four species of Cerambycidae more characteristic of southern Ontario and southern Quebec (N.brunnea, E. caerulea, S. schaumii, and S. vestita) were from rich Appalachian hardwood forest.Unfortunately, much of this forest type has been reduced to small and often isolated patches with the result that many plant species (43) occurring in this forest type are considered rare in New Brunswick (MacDougall and Loo 1998).Th e above species of Cerambycidae may likewise be rare and isolated species in the Maritime Provinces, although more fi eldwork will be required to confi rm this.
Tetrops praeusta was recently reported from Maine and Quebec (Howden and Howden 2001;Landry 2001).Th e record reported here from the Meduxnekeag River Valley Nature Preserve in western New Brunswick indicates that this species has either expanded its range since the original discovery, or has been overlooked in New Brunswick to date.Howden and Howden (2001) reported that T. praeusta feeds on twigs of apple, rose, and a variety of hardwoods and has the potential of becoming a pest.Only a few adults have been found and it is unclear whether this species will become problematic.
Although this study adds substantially to our knowledge of the overall composition of the cerambycid fauna of the Maritime Provinces, additional species undoubtedly occur in all three Maritime Provinces, especially on Prince Edward Island where only 43 species have been recorded.Considerably more fi eldwork is required before we can gain a complete understanding of the distribution and composition of the Cerambycidae of the Maritime Provinces.
are newly recorded from Canada.An analysis of the Cerambycidae fauna of the Atlantic Maritime Ecozone is forthcoming in McCorquodale (in press).

Table 1 .
Th e Cerambycidae recorded in the Canadian Maritime Provinces with distribution indicated by province.