Náttúrufræðingurinn - 1984, Page 18

Böðvarsson & Sigurður H. Richter.
1973. Surtsey, Iceland - The Develop-
ment of a New Fauna, 1963-1970.
Terrestrial Invertebrates. — Ent.
scand., Suppl. 5.
Lohse, G. A. 1971. Familie : Hydraeni-
dae. — f: H. Freude, K. W. Harde &
G. A. Lohse (ritstj.) Die Káfer Mit-
teleuropas 3: 95—125. Goecke &
Evers, Krefeld.
Mikkola, K. 1968. Hemianax ephippiger
(Burm.) (Odonata) carried to Iceland
from the Eastern Mediterranean by an
aircurrent. — Opusc. Ent. 33: 111 —
113.
Régimbart 1895, 1907, sjá tilvitnun í Bal-
four-Browne (1950).
Scháflein, H. 1971. Familie : Dytiscidae.
— f: H. Freude, K. W. Harde & G. A.
Lohse (ritstj.) Die Káfer Mitteleuropas
3: 16—89. Goecke & Evers, Krefeld.
Southwood, T. R. E. 1978. Ecological
Methods with particular reference to
the study of insect populations. —
Chapman & Hall, London.
SUMMARY
Oreodytes sanmarki
(Sahl.) (Col., Dytiscidae),
a water beetle new to Iceland
by
A. J. Dugmore
& P. C. Buckland,
Dept. of Geography,
University of Birmingham,
England.
During July, 1980, four specimens of the
water beetle Oreodytes sanmarki (Sahl.)
(Col., Dytiscidae) were taken from a small
pond immediately adjacent to the snout of
the glacier Sólheimajökull, near Skógar in
southern Iceland. Despite intensive sear-
ching of other ponds in the area, no other
specimens were found, although both Aga-
bus solieri and Hydroporus nigrita were
common in most pools. Although
immediately adjacent to the ice, the pool
was clear and well vegetated, but by 1982 a
marginal advance of the glacier had begun
to introduce silt to the pond and it is
possible that it may be beneath the ice,
from which the area emerged in the 1940’s,
in the next few years. It is unlikely that the
beetle is a recent introduction and it is
probable that like Agabus uliginosus, in its
single pond in Berufjörður, it is endemic,
having arrived in Iceland with the rest of
the primary Holocene flora and fauna in
the Late Glacial or early Holocene.
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