Biodiversity in Australia's National Reserve System - Part ... - BushBlitz

Water beetles (Dytiscidae)
The ANHAT database has 1888 records for 123 species and subspecies of Dytiscidae. No
species of Dytiscidae are considered extinct.
There are 17 Dytiscidae species that account for approximately 50% of the total Dytiscid
species records in ANHAT. These species have over 30 records each.
Table 76. Dytiscidae species that account for approximately 50% of the Dytiscid records in
ANHAT.
Species No. Records % total records
Hydaticus consanguineus 38 2.00
Hydrovatus fasciatus 38 2.00
Platynectes decempunctatus 38 2.00
Copelatus clarki 39 2.06
Copelatus irregularis 46 2.43
Copelatus nigrolineatus 46 2.43
Laccophilus clarki 47 2.48
Bidessodes mjobergi 49 2.58
Hydrovatus opacus 55 2.90
Hydroglyphus basalis 61 3.22
Hydroglyphus daemeli 62 3.27
Laccophilus cingulatus 69 3.64
Hydrovatus rufoniger 82 4.32
Hyphydrus lyratus 84 4.43
Hydroglyphus godeffroyi 87 4.59
Hydrovatus ovalis 91 4.80
Allodessus bistrigatus 92 4.85
Total 1024 54
Seventy-three species had 10 or fewer individual record sites in the ANHAT database (Table
77). Of those species, none are listed as threatened. These species have been excluded from
analysis but are included here for reference. Exclusion of these poorly recorded species
eliminates 220 records. These species occur across all of Australia, with 25 species
occurring in only one State or Territory and the remaining species occurring in at least one
other State or Territory. Only one species had habitat details available. However, all species
are aquatic and so are associated with water bodies of some type.
Table 77. Dytiscidae species with 10 or fewer individual site records in the ANHAT
database.
Species
No.
Records
% in
NRS Location
Veg
type
Area
(km 2 )
EPBC
status
Antiporus interrogationis 1 100.0 ACT, NSW, SA, VIC NL
Chostonectes gigas 1 100.0 ACT, NSW, NT, QLD, NL
186