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Halifax, Canada

Majka C.G.,Nova Scotia Museum | Johnson C.,17 Peaknaze Close | Langor D.W.,Natural Resources Canada
ZooKeys | Year: 2010

The Atomariinae (Coleoptera: Cryptophagidae) fauna of Atlantic Canada are surveyed. Ten species in the genus Atomaria are reported in the region, six of which, including Atomaria distincta Casey, Atomaria fuscata Schönherr, Atomaria lederi Johnson, Atomaria lewisi Reitter, Atomaria testacea Stephens, and Atomaria nigrirostris Stephens, are newly recorded in Canada. Atomaria lederi and A. lewisi are newly recorded in North America. Twenty-three new provincial records are reported. Atomaria curtula Casey, 1900 (syn. n.) is designated as a synonym of Atomaria lewisi Reitter; Atomaria ovalis Casey, 1900 (syn. n.) is designated as a synonym of Atomaria apicalis Erichson, 1846; and Atomaria saginata Casey, 1900 (syn. n.) is designated as a synonym of Atomaria fuscata Schönherr. A key to species is provided, as are species descriptions. Records of all species are given and their distribution in the region is plotted. The global distribution of all Holarctic and adventive species is briefly summarized, and the jurisdictions in North America where they have been reported are compiled. Habitat and bionomic information is also provided for all species, both from within the region, and from observations in European studies. The fauna is briefly discussed from a zoogeographic perspective; two species are Nearctic in origin, five may be Holarctic in distribution, and three others may be adventive Palaearctic species, although further evidence is required to confirm such preliminary assessments. Similarly, because of the paucity of information on this genus, further fieldwork is required to fully discern the distribution of these species in Atlantic Canada. Three are apparently saproxylic species characteristic of forested habitats; three are primarily grassland species; and the remaining four are eurytopic species found in a wide variety of forested and open habitats. © C.G. Majka, C. Johnson, D.W. Lango.

Cutler G.C.,Dalhousie University | Renkema J.M.,Dalhousie University | Majka C.G.,Nova Scotia Museum | Sproule J.M.,Dalhousie University
Canadian Entomologist | Year: 2012

The Carabidae (Coleoptera) are a diverse family of beetles with almost 300 species identified in Nova Scotia, Canada. Carabid beetle communities have been studied in several agricultural systems, but not wild blueberries, an important crop in eastern Canada. In the interest of potentially developing conservation biological control programs in wild blueberry, we collected Carabidae in crop (fruit-bearing) and sprout (vegetative) blueberry fields in Nova Scotia in order to assess species diversity and abundance over space and time. Over 3200 specimens were collected, representing 51 species. A large portion of collected specimens (39%) were nonnative, and the most abundant species were generally predacious and synanthropic. Species diversity tended to be higher near forest edges than further into fields, but not for all abundant species. Several of the most prominent predators showed significant differences in preference of crop versus sprout fields, distribution throughout fields, and seasonable abundance. These findings have implications for conservation biological control efforts with carabid beetles against several insect pests in wild blueberry. © 2012 Entomological Society of Canada.

The genus name Liodes and the family name Liodidae have been the cause of much confusion in zoology. The genus name Liodes has been used in Acari, Lepidoptera, Opiliones, and Coleoptera, and has often been misused, misspelled, or misunderstood. This paper reviews the history of these names and the related names Leiodes and Neoliodes, and concludes that (1) the names Leiodes Latreille 1796 and Leiodidae Fleming 1821 are available for a genus and family of beetles; (2) the names Neoliodes Berlese 1888 and Neoliodidae Sellnick 1928 are available for a genus and family of mites; (3) the names Liodes and Liodidae are not available for any group of animals, and should not be used. Copyright © 2010 · Magnolia Press.

Michaud J.-P.,University of Moncton | Majka C.G.,Nova Scotia Museum | Prive J.-P.,Agriculture and Agri Food Canada | Moreau G.,University of Moncton
Forensic Science International | Year: 2010

The insect pool available for carrion visitation and colonisation varies with geographical areas, hence the need to build a comprehensive database wherever such data could be used in forensic investigations. However, most of the geographic records on carrion-related insects are from short-term seasonal studies. Here, we provide the year-round taxonomic composition for the dominant ecosystem of the Maritime lowland ecological region that borders the Gulf of St. Lawrence, Canada, and we examine how this composition is subjected to natural (seasonal) as well as anthropogenic changes. Fresh pig carcasses, used here as human surrogates, were exposed recurrently throughout the whole annual period when carrion-related insects are active in forests and adjacent areas subjected to human-induced land cover changes from agricultural practices. A total of 130 necrophageous and predacious insect species representing 2 orders, 18 families and 75 genera were recovered from carcasses. Abundant fly species were able to visit and/or colonise carcasses exposed in both forests and agricultural fields but the species involved varied throughout the year. Conversely, the complex of abundant coleopterans found on carcasses remained stable throughout the year but differed between forests and agricultural fields. Considering the seasonal and anthropogenic changes that were observed in the complex of carrion-related insects, we stressed that inference on the taxonomic composition in relation to minimum postmortem interval should be restricted to a specific habitat and time of the year. These results also have methodological implications, suggesting that the experimental designs of forensic studies in temperate areas require adjustments to permit robust estimations of minimum postmortem intervals from the insect fauna associated with carcasses. © 2010 Elsevier Ireland Ltd.

Majka C.G.,Nova Scotia Museum | Langor D.,Natural Resources Canada
ZooKeys | Year: 2010

Eighteen species of Cryptophaginae are now known to occur in Atlantic Canada. Eight of these including Cryptophagus difficilis Casey, Cryptophagus jakowlewi Reitter, Cryptophagus laticollis Lucas, Cryptophagus mainensis Casey, Cryptophagus tuberculosus Mäklin, Pteryngium crenatum (Gyllenhal), Telmatophilus americanus LeConte and Caenoscelis basalis Casey, are newly recorded in Atlantic Canada; one of which, C. mainensis, is newly recorded in Canada, and another, C. laticollis, is newly recorded in eastern North America. Nineteen new provincial records are reported with the result that five species of Cryptophaginae are now known from New Brunswick, 14 from Nova Scotia, four from Prince Edward Island, 10 from insular Newfoundland, and four from Labrador. A new early date of detection (1986) is reported for the adventive Palaearctic Telmatophilus typhae (Fallén) in North America. Keys to identification are provided for the genera Antherophagus, Cryptophagus, and Telmatophilus and the composition, zoogeography, and bionomics of the group in Atlantic Canada are discussed. © C.G. Majka, D. Langor.

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