Cafius bistriatus (Erichson, 1840)

Majka, Christopher, Klimaszewski, Jan & Lauff, Randolph, 2008, The coastal rove beetles (Coleoptera, Staphylinidae) of Atlantic Canada: a survey and new records, ZooKeys 2 (2), pp. 115-150 : 135

Cafius bistriatus (Erichson, 1840)

NEW BRUNSWICK: Albert Co.: Mary’s Point , 23.VIII.2003, C.G. Majka, coastal dunes, under flotsam, (1, CGMC) ; Charlotte Co.: Pottery Beach, Passamaquoddy Bay , 29.VII.1976, M.J. Dadswell, (2, CNC) ; Kent Co.: Kouchibouguac National Park , 1.VI.1977, S.J. Miller (1, CNC) ; Kouchibouguac National Park , 13.IX.1977, J.M. Campbell, (1, CNC) ; Restigouche Co.: River Charlo, 24.VII.1972, J.M. Campbell. (1, CNC). NOVA SCOTIA: Cape Breton Co. : Point Aconi, 13.VII.1972, J.M. and B.A. Campbell, (1, CNC) ; Big Bras d’Or , 25.VII.1972, J.M. Campbell, (1, CNC) ; Inverness Co.: Cape Breton Highlands National Park: Presqu’île , 13.IX.1984, sifting beach wrack, (40, CNC) ; 2.5 km SE of Cap Rouge , 14.XI.1984, A. Smetana, (8, CNC) ; Pleasant Bay , 27.V.1984, L. Masner, sea-beach kelp, (2, CNC) ; Pleasant Bay , 29.VII.1983, D.E. & J.E. Bright, seashore kelp, (2, CNC) ; Victoria Co.: Big Bras d’Or , 25.VII.1972, J.M. Campbell, (1, CNC) ; North Bay Ingonish, Cape Breton Highlands National Park , 29.VI.1983, L. LeSage, seashore wrack, (1, CNC) .

Cafius bistriatus was recorded in the Maritime Provinces by Frank et al. (1986) and Campbell et al. (1987) and from Newfoundland by Smetana (1965). Its distribution in Atlantic Canada is shown in Fig. 15 . It is common in wrack and other debris on marine beaches ( Newton et al. 2000). James et al. (1971) reported that Cafius species lay their eggs deep in sand where their larvae prey on amphipods, flies of the genus Fucellia , and small barnacles. Two abundant amphipods associated with Coleoptera in beach drift environments in the Maritime Provinces are Talorchestia longicornis (Say, 1818) in the upper littoral and splash zone, and Orchestia gammarella Pallas, 1766 in beach drift slightly lower down on the coastline ( Klimaszewski and Majka 2006). Tal- orchestia megalophthalma (Bate, 1862), O. platensis Kroyer, 1845 , and O. grillus (Bosc, 1802) are also present in the region ( Gosner 1971).

Figures

Fig. 15. The distribution of Gyrohypnus angustatus, Creophilus maxillosus villosus, Cafius bistriatus, and Gabrius astutoides in Atlantic Canada. Note: Two sites from central Labrador (Goose Bay and Cartwright) are not shown on the map.