Martikainen, P. 2002: Ecology and conservation status of Acanthocinus griseus
(Fabricius, 1792) (Coleoptera: Cerambycidae) in Finland. - Entomol. Fennica
13: 41-50.
The ecology and occurrence of Acanthocinus griseus in Finland is described to explain why this rarity was excluded from the latest national Red List. Careful examination of several trees inhabited by the species showed that the habitat requirements of A. griseus are in fact rather broad, contrary to previous assumptions. Acanthocinus griseus can breed in almost any part of the trunk of freshly dead, standing spruce and pine trees. All finds were made in normal managed forests or in burned areas. High mortality was observed during the larval stage due to parasitoids and predators. Adults of A. griseus live a cryptic life and larvae are difficult to find without experience, which may explain the low number of observations in Finland. Acanthocinus griseus is clearly an overlooked species and detailed examination of suitable trees would without doubt reveal many new occurrences in this country.