Atomaria lederi Johnson, 1970

Majka, Christopher, Johnson, Colin & Langor, David, 2010, Contributions towards an understanding of the Atomariinae (Coleoptera, Cryptophagidae) of Atlantic Canada, ZooKeys 35 (35), pp. 37-63 : 50-52

Atomaria lederi Johnson, 1970

NOVA SCOTIA: Colchester Co.: Five Islands Park, September 6, 1988, E. Georgeson, uv light trap (2, NSMC) ; Cumberland Co.: Oxford , August 11, 1988, E. Georgeson, uv light trap (1, NSMC) ; Guysborough Co.: Dayspring Lake, 2–15 June , 1997, 1–16 July, 1997, D.J. Bishop, red spruce, FIT (2, NSMC) ; George Lake, 14 May-2 June , 1997, D.J. Bishop, red spruce (young), FIT (1, NSMC) ; Malay Lake, 14 May-2 June , 1997, 15–30 June, 1997, 1–16 July, 1997, D.J. Bishop, red spruce, FIT (8, NSMC) ; Melopseketch Lake, 1–16 July , 1997, D.J. Bishop, red spruce (young), FIT (1, NSMC) ; Seloam Lake, 14 May-2 June , 1997, 2–15 June, 1997, 15–30 June, 1997, D.J. Bishop, red spruce, FIT (3, NSMC) ; Halifax Co.: Big St. Margarets Bay , 2–15 June, 1997, 29 July-13 August, 1997, D.J. Bishop, red spruce, FIT (2, NSMC) ; Grassy Lake, 15–30 June , 1997, 1–16 July, 1997, D.J. Bishop, red spruce, FIT (4, NSMC) ; Moser Lake, 15–30 June , 1997, 1–16 July, 1997, D.J. Bishop, red spruce, FIT (2, NSMC) ; Pockwock Lake, 29 July-13 August , 1997, D.J. Bishop, red spruce (mature), FIT (1, NSMC) ; Porters Lake , September 2, 1993, B. Wright (2, NSMC) ; Pt. Pleasant Park , June 7, 2001, June 27, 2001, July 7, 2001, May 9, 2002, C.G. Majka, boggy area, (5, CGMC) ; Sandy Lake, 2–15 June , 1997, 29 July-13 August, 1997, D.J. Bishop, red spruce (120+ years), FIT (2, NSMC) ; Ten Mile Lake , 15–30 June, 1997, D.J. Bishop, red spruce, FIT (1, NSMC) ; Hants Co.: Armstrong Lake , 14 May-2 June, 1997, D.J. Bishop, red spruce (75 years), FIT (2, NSMC) ; Leminister, 15–30 June , 1997, D.J. Bishop, red spruce/eastern hemlock, FIT (1, NSMC) ; Little Armstrong Lake, 14 May-2 June , 1997, D.J. Bishop, red spruce (75 years), FIT (1, NSMC) ; Lunenburg Co.: Bridgewater , May 27, 1965, B. Wright, red oak, window trap (1, NSMC) ; Card Lake, 15–30 June , 1997, D.J. Bishop, red spruce/eastern hemlock (old), FIT (1, NSMC) ; Pictou Co.: Lorne , 15–30 June, 1997, D.J. Bishop, red spruce/ eastern hemlock (mature), FIT (1, NSMC) ; McLellan’s Brook , July 29, 1988, E. Georgeson, uv light trap (1, NSMC) ; Shelburne Co.: Barrington , May 18, 1966, collector not noted, attic of old meeting house (1, NSMC) .

Atomaria lederi is newly recorded in North America (Fig. 14). The reference to North America in Johnson et al. (2007) refers to some of the above records. In the Palaearctic region this species has been recorded from central and northern Russia, east across Siberia to the Russian Far East, and south to Mongolia, North Korea, and northern China (Liaoning) ( Johnson et al. 2007). In Nova Scotia it has primarily been found in mixed red spruce ( Picea rubens Sarg. ) and eastern hemlock ( Tsuga canadensis (L.) Carr.) ( Pinaceae ) forests of various ages, occasionally in boggy areas in such forests, on Spiraea alba Duroi (Rosaceae) , and balsam fir ( Abies balsamea (L.) Mill) ( Pinaceae ).

Description: Dorsum and venter reddish-testaceous throughout, including legs. Head, pronotum, and elytra moderately coarsely, moderately densely punctate; interspaces 1.0–1.5 times the diameter of punctures; elytral setae the length of the interspaces, appressed. Pronotum widest at middle, narrowing slightly to base and more strongly to apex (Fig. 6). Antennae: antennomere 1 quadrate, swollen; 2 the same length and almost the same width as 1; 3 slightly shorter and narrower; 4–8 similar in size and bead-like; club distinct; antennomeres 9 and 10 quadrate, not transverse (Fig. 1.5). Body: width/length ratio, 0.43; length, 1.2–1.4 mm.