Asemum striatum
Encyclopedia
Asemum striatum, the black spruce borer, is a beetle
species belonging to the family Cerambycidae, subfamily Spondylidinae
.
This beetle is present in most of Europe
, in East Palearctic ecozone, in the Near East
, in Nearctic ecozone and in Oriental ecozone.
The adults grow up to 8–23 mm (0.31496062992126–0.905511811023622 ) and can be encountered from May through August, completing their life cycle
in two to three years. Head and pronotum are usually black, while elytrae are black or brownish, with various longitudinal ridges (hence the specific name).
They are polyphagous in coniferous trees (mainly feeding on Pinus sylvestris, Pinus mugo and Pinus nigra, but also on Picea abies and Abies or Larix species). Larvae develop under bark of host plants, later in dead branches and stumps of trees.
Beetle
Coleoptera is an order of insects commonly called beetles. The word "coleoptera" is from the Greek , koleos, "sheath"; and , pteron, "wing", thus "sheathed wing". Coleoptera contains more species than any other order, constituting almost 25% of all known life-forms...
species belonging to the family Cerambycidae, subfamily Spondylidinae
Spondylidinae
Spondylidinae are a small subfamily of Cerambycidae including slightly over 100 species, primarily in the coniferous forests of the Boreal hemisphere...
.
This beetle is present in most of Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...
, in East Palearctic ecozone, in the Near East
Near East
The Near East is a geographical term that covers different countries for geographers, archeologists, and historians, on the one hand, and for political scientists, economists, and journalists, on the other...
, in Nearctic ecozone and in Oriental ecozone.
The adults grow up to 8–23 mm (0.31496062992126–0.905511811023622 ) and can be encountered from May through August, completing their life cycle
Biological life cycle
A life cycle is a period involving all different generations of a species succeeding each other through means of reproduction, whether through asexual reproduction or sexual reproduction...
in two to three years. Head and pronotum are usually black, while elytrae are black or brownish, with various longitudinal ridges (hence the specific name).
They are polyphagous in coniferous trees (mainly feeding on Pinus sylvestris, Pinus mugo and Pinus nigra, but also on Picea abies and Abies or Larix species). Larvae develop under bark of host plants, later in dead branches and stumps of trees.