Abstract
Diglotta mersa (Haliday) of the Diglottini, a western Palaearctic species, is reported for the first time from the Atlantic coast of North America (Canada, New Brunswick, Dipper Harbour). It was found in fine gravel under small (10-15 cm diameter) rocks in the intertidal zone, approximately 2 m below the mean high tide mark. A description, and images of the external body, median lobe of aedeagus, spermatheca and terminal segments are provided. New distributional and bionomic data for Halobrecta flavipes Thomson, a coastal species of the Athetini Casey, are presented.
Highlights
The tribe Diglottini Jacobson, 1909 includes two genera, Diglotta Champion, 1899 and Paradiglotta Ashe and Ahn (2004) (Ashe 2001; Caron and Ribeiro-Costa 2008), but is still not well defined. Klimaszewski (1982) included the genus Polypea Fauvel, and Pace (1986) included four additional genera: Brachypronomaea Sawada, Bryothinusa Casey, Corallis Fauvel and Halorhadinus Sawada in the Diglottini
Distribution Diglotta mersa has previously been reported from coastal areas of Europe: Albania, Belgium, Denmark, France, Great Britain, Germany, Ireland, Italy and the Netherlands (Smetana 2004), but due to previous species misinterpretation (Good 1998), the distribution in the Western Palaearctic requires revision. We report this species for the first time from the Atlantic coast of North America (Canada: New Brunswick)
Description A description of Halobrecta flavipes Thomson is given in Klimaszewski et al (2002) and Gusarov (2004). This marine littoral species has been previously recorded from the coasts of Europe (Smetana 2004), Inaccessible Islands, Chile, and the United States (New York, Virginia) (Klimaszewski et al 2002; Gusarov 2004). We report this species for the first time for New Brunswick, Canada, from specimens collected in the intertidal and littoral zones
Summary
The tribe Diglottini Jacobson, 1909 includes two genera, Diglotta Champion, 1899 and Paradiglotta Ashe and Ahn (2004) (Ashe 2001; Caron and Ribeiro-Costa 2008), but is still not well defined. Klimaszewski (1982) included the genus Polypea Fauvel, and Pace (1986) included four additional genera: Brachypronomaea Sawada, Bryothinusa Casey, Corallis Fauvel and Halorhadinus Sawada in the Diglottini. Klimaszewski (1982) included the genus Polypea Fauvel, and Pace (1986) included four additional genera: Brachypronomaea Sawada, Bryothinusa Casey, Corallis Fauvel and Halorhadinus Sawada in the Diglottini. The latter genera were transferred to different tribes (Ahn et al 2003; Ahn and Ashe 2004): Brachypronomaea was transferred to the Myllaenini. Copyright Her Majesty the Queen in Right of Canada. Paradiglotta includes only one species, P. nunni Ashe and Ahn, from New Zealand (Ashe and Ahn 2004), while Diglotta includes eight species (Table 1), two in the western Palaearctic (D. mersa Haliday, D. sinuaticollis Mulsant and Rey), one in Africa (D. secqi Pace), one in Brazil (D. brasiliensis Caron and Ribeiro-Costa), four in the Nearctic region (D. mersa (Haliday) [Atlantic coast], D. littoralis (Horn) [Atlantic coast], D. legneri Moore and Orth [Pacific coast]), and D. pacifica Fenyes [Pacific coast], and one species, D. maritima Lea, in the Fiji Islands (Caron and Ribeiro-Costa 2008; Moore and Orth 1979; Haghebaert 1991; Pace 1986; Ashe 2001)
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