Checklist of - Entomological Society of Canada

Ptinidae
Genus BYRRHODES LeConte
B. intermedius (Leconte) PQ
Genus TRICORYNUS Waterhouse
C atorama Gu6rin-M6neville
Hemiptychus LeConte
Key to North American species: White (1965)
Subfamily TRICORYNINAE
Tribe TYicorynini
T. borealis (LeContet MB ON
T. confusus (Fall) PQ
T. densus (Fall) AB
rogersi (Hatch)
T. nigritulus (Lecontet - ON
T. nubilus tFallt
schuhi (I].atc]e],
Family PTINIDAE spider beetles
Y. Bousquet
Only 16 ptinid species are found in Canada and Ptinidae, the common name of which refers to
Alaska, and all but three are introduced on this con- the fact that the adults of many species look like
tinent. Many of these species are found in mills, small spiders, is closely related to Anobiidae. The
warehouses, granaries, stores, museums, and hospi- species are divided into two groups that are considtals
where they feed, in both the adult and larval ered to be subfamilies or tribes. Papp has reviewed
stages, on a wide variety of products including the North American fauna (1962). Many species
grain, seeds, and drugs. These species are usually that occur in Canada can be identifred with the key
minor pests, since they rarely build up large popula- provided by Brown (1940).
tions. Spider beetles also occur in nests of mammals,
birds, and bees; they are probably scayengers AK (1); BC (13);AB (5); SK (6); IVIB (7); ON (11); PQ
that feed on dry animal and vegetable matter. (11);NB (9);NS (10); PE (1); NF (5) . I (13)
Genus GIBBIUM Scopoli
Scotias Czenpinski
Subfamily GIBBIINAE
G. aequinoctiale Boieldieuf - ON PQ NB NS
psylloides auct.
Genus MEZIUM Curtis
M. affrne Boieldieut - BC - SK MB ON PQ NB NS
Genus SPHAERICUS Wollaston
Subfamily PTININAE
S. gibboides tBoieldieut+ - BC
Genus TIPNUS C.G. Thomson
Epauloecus Mulsant & Rey
T. unicolor (Piller & - NB NS
Mitterpacher)t
Genus TRIGONOGENIUS Solier
T. gJobulus Soliert - BC
farctus LeConte
Genus NIPTUS Boieldieu
N. hololeucus (Faldermann)f - BC AB SK MB ON PQ NB NS PE - NF
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