Fróðskaparrit - 01.01.1993, Page 77

PESTS RECORDED IN THE FAROEISLANDS, 1986-1992
81
Name of animal The Faroe Islands Denmark
Frequency of inquiries
Common earwig August July
Spider beetle August and October July and October
Wood-boring beetle (adults) July May-August
Book-lice around the year October-November
Silverftsh around the year April-August
Dark flour beetle around the year September-January
Fungus beetles October-April June-October
Table 1. Differences between the Faroe lslands and Denmark in the occurrence ofvarious pest species.
Talva 1. Tíðin tá skaðadýr verða sædd í Føroyum og í Danmark.
Differences between pest fauna in the
Faroe Islands and Denmark
Some differences between the Faroes and
Denmark in the seasonal occurrence of pest
fauna are evident (Table 1). Two things are
striking: firstly, that some species have
their peak season in the Faroes about one
month later than in Denmark (earwig,
spider beetle, wood-boring beetle); and
secondly that other species with a peak
season in Denmark have none in the Faroes
(book-lice, silverfish, dark flour beetle).
The most probable explanation is the small
number of records in the Faroes compared
with Denmark. Nevertheless, the distribu-
tion of records could also change due to the
oceanic climate in the Faroes, which results
in the later development of the larvae in the
summertime, but better survival possibili-
ties in the mild winters.
Acknowledgments
The first author wishes to thank the Danish Pest Infesta-
tion Laboratory for encouraging me to treat local pest
problems, as well as Arne Nørrevang for assistance and
advice in special cases and encouragement in the samp-
ling of the material.
A special thanks to Kate Sanderson for proofreading
and to Marianna Debes Dahl for the Faroese translation
of the abstract.
References
Bengtson, S.A. 1980. Species Assemblages and Co-
existence of Faroe Island Ground Beetles (Cole-
optera: Carabidae) Entom.Gen. 6(2/4): 251-266.
Bengtson, S.A. 1981. Terrestrial Invertebrates of the
Faroe Islands: III. Beetles (Coleoptera): Check-list,
distribution, and habitats. Fauna Norv. B 28: 52-82.
Bengtson, S.A. 1982. Lavere dyr pá land og i ferskvand.
Danmarks Natur 12: 123-141.
Bloch, D. and Hallas, T. 1988. Mider pá færøsk skærpe-
kød. Ent. Meddr. 56(1): 61-62.
Buckland, P.C.: 1988. North Atlantic faunal connec-
tions - introduction or endemics? Ent. scand. Suppl.
32: 7-29.
Buckland, P.C.: 1992. Insects, Man and the earliest
settlement of the Faroe Islands: a case not proven.
Fróðskaparrit 38-39: 107-114.