Asemum striatum

(Linnaeus, 1758)

black spruce borer

Asemum striatum, commonly known as the black spruce borer, is a Holarctic longhorn (: Spondylidinae) distributed across Europe, Asia, and North America. are active from May through August and are in coniferous trees. The develops under bark of plants, with later tunneling into dead branches and stumps. It has been used as a comparative reference species in morphological studies of related such as Asemum tenuicorne.

Asemum striatum by (c) Barry Walter, some rights reserved (CC BY), uploaded by Barry Walter. Used under a CC-BY license.

Asemum striatum MDj1 by Milan Đurić. Used under a CC BY-SA 4.0 license.

Asemum striatum 1231095 by Gyorgy Csoka. Used under a CC BY 3.0 us license.

Pronunciation

How to pronounce Asemum striatum: /əˈsiːməm ˈstraɪətəm/

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Identification

Distinguished from similar Asemum by the combination of striated , black to brownish coloration, and body size. Morphological comparison with Asemum tenuicorne reveals differences in external features, male copulatory organ shape, and . The striated elytra separate it from smooth-elytra .

Images

Habitat

Coniferous forests. Associated with dead and dying coniferous trees, particularly under bark of plants and in dead branches and stumps.

Distribution

Holarctic distribution encompassing most of Europe, the East , the Near East, the , and the Indomalayan realm. Present in North America, Europe, and Northern Asia.

Seasonality

active from May through August.

Diet

in coniferous trees. feed under bark and in wood of plants.

Host Associations

Pinus sylvestris - primary
Pinus mugo - primary
Pinus nigra - primary
Picea abies - secondary
Abies - -level association
Larix - -level association

Life Cycle

Completes in two to three years. develop under bark of plants, later tunneling into dead branches and stumps. occurs in wood.

Ecological Role

Wood-boring contributing to decomposition of dead coniferous wood. Serves as for tylenchid .

Human Relevance

May be encountered in forestry contexts due to association with coniferous timber. No significant economic impact documented.

Similar Taxa

Asemum tenuicorneClosely related with overlapping ; distinguished by detailed examination of external features, male copulatory organs, and . A. tenuicorne has more restricted distribution (Southern Europe and isolated Swedish locality) compared to widely distributed A. striatum.
Spondylis buprestoidesShares Spondylidinae and similar wood-boring ; both serve as for related tylenchid .

More Details

Parasite Host

Documented for tylenchid , with -bearing parasitic juveniles found in of A. striatum in Ithaca, New York, USA. The isolate is phylogenetically related to Deladenus siricidicola.

Morphological Reference

Serves as a widely distributed comparative in morphological studies of Asemum tenuicorne, with 63 specimens examined for comparison of external features, morphometrics, male , and .