Checklist of - Entomological Society of Canada

Haliplidae
G. janus (Fablicius)
ahasueru; Liebke
americana (Fabricius)
borealis Oastelnau
caseyi Lel'g
caseyi Lit:lske
cordicollis Chaudoir
cyanipeniis Dejean
intermed o Casey
occipitali.; Casey
thoracica Casey
MB ON PQ
Family HALIPLIDAE crawling water beetles
R.E. Roughley
Haliplidae is a family of aquatic beetles that
includes 3 7 species in Canada and Alaska. The
adults are distinguished among aquatic beetles by
their enlarged hind coxal plates suspended below
the abdominal sterna. Adult haliplids swim slowly
or crawl o r submerged vegetation. Members of
Brychius are found in erosional portions of streams.
Those of other genera use a wide variety of freshwater
habitats but are most often found in permanent,
clean, nutrient-rich ponds and lakes or in slow
backwaters of streams. Larvae feed on periphyton
or algae. Adults are primarily algophagous but may
be facultative scavengers.
The hr'liplids have often been placed near
Dytiscidae in classifications. This position is maintained
by lleutel and Roughley (1988), who, however,
sugg(, st that haliplids represent an indepen-
dent invasion of the water (for alternative views,
see Kavanaugh 1986). There is no recetrt taxonomic
revision of the North American fipecies.
Matheson (1912) and Roberts (1913) provided the
last comprehensive treatments. Proper species
identification often requires examination of male
genitalia. Therefore, previously widespread species
are found to represent species complexes. A number
of regional taxonomic works, such as Gordon
and Post (1965), Matta (1976), Brigham (1982),
Hilsenhoff and Brigham (1978), and Gunderson
and Otremba (1988), are useful for interpreting the
Canadian fauna.
AK (3); YK (4); NT (9); BC (23); AB (15); liK (10);
MB (13); ON (17); PQ (18); NB (3); NS (3); LB (2);
NF(4) . H(1)
Genus BRYCI'IIUS C.G. Thomson
Key to North American species:
B. albertanus Carr
B. hornii Crotr:h
B. hungerfordi Spangler
B. pacificus Carr
Carr (1928)
_AB
BC
BC
SK
MB
-oN
Genus HAJ-IPLUS Latreille
Key to North Arnerican species:
(Subgenus IL.aI-IPLUS s. str.)
H. allisonae Brigham
H. apicalis C.(i. Thomson*
strigatus Roberts
H. blanchardi Roberts
H. distinctus ''Vallis
H. dorsomacu, atus Zimmermann
H. falli Mank
H. immaculicollis Harris
americanus Aub6.
impressus Kirby
H. longulus LeConte
hoppingiWallis
H. robertsi Zirnmermann
pallidus loberts
H. stagninus lL,eech
(Subgenus PARAIIAPHLUS Wallis)
Wallis (1933)
^K
YI< Nr BC AB SK MB
A]{ YK NT
AK }'K NT
NT
BC
BC
BC
BC
BC
BC
BC
AB SK
AB
AB SK
_-PQ
MB_PQ
MB ON PQ
MB ON
MB
PQ
NB \Tq DF
-NF
LB NF
60