Beetles Identification Guide

eddish, and the elytra, more or less blackish, except along the humeral region.
Uniformly reddish specimens are known in Europe, but so far, only bicolorous
specimens have been found in North America.
Sexual dimorphism: Males have 4-segmented hind tarsi, females 5-segmented
ones (Fig. 244).
Distribution: One of the commonest species in the Palaearctic region; introduced
in North America and known only in Newfoundland.
Economic importance: As discussed for the family.
Cryptophagus scutellatus Newman
Diagnosis: The species is readily distinguishable from the other Cryptophagus
with single elytral pubescence by its small size (length less than 1.9 mm) and the
sparse pronotal punctation (punctures separated by their diameter or more).
The shape of the pronotum is also characteristic of this species, particularly the
small anterior angles and the lateral teeth located well in front of the middle of
the side.
Sexual dimorphism: Males have 4-segmented hind tarsi, females 5-segmented
ones (Fig. 244).
Distribution: Europe and introduced in North America. The species is known in
Canada in Ontario and Alberta.
Economic importance: As stated for the family.
Cryptophagus setulosus Sturm
Diagnosis: Among the species of Cryptophagus with double elytral pubescence
and the anterior angles of the pronotum not drawn out posteriorly, C. setulosus
can be confused only with C. laticollis and C. cellaris. It differs from C. laticollis
mainly in having the eyes only slightly conical and not flattened anteriorly, and
from C. cellaris in having the longer setae of the elytral pubescence suberect and
conspicuous.
Sexual dimorphism: Males have 4-segmented hind tarsi, females 5-segmented
ones (Fig. 244).
Distribution: According to Woodroffe and Coombs (1961), probably Holarctic.
However, since the species is found in the Old World only in Europe and North
Africa, it is more likely that it was introduced in North America. In Canada the
species is known in Quebec, Ontario, and British Columbia.
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