''Phymatodes testaceus'' (commonly known as the tanbark borer, or the violet tanbark beetle)ZipcodeZoo.com
/ref> is a transpalearctic polymorphic species of beetle in the subfamily Cerambycinae in the

longhorn beetle The longhorn beetles (Cerambycidae), also known as long-horned or longicorns, are a large family of beetles, with over 35,000 species described. Most species are characterized by extremely long antennae, which are often as long as or longer than ...

family. ''Жуки-дендрофаги Казахстана (Короеды, дровосеки, златки)''. — Алма-Ата: «Наука», 1973. — С. 242—243. — 287 с. — 1400 экз. The ''P. testaceus''

imago In biology, the imago (Latin for "image") is the last stage an insect attains during its metamorphosis, its process of growth and development; it is also called the imaginal stage, the stage in which the insect attains maturity. It follows the f ...

is typically 6–16 mm in length. Their

egg An egg is an organic vessel grown by an animal to carry a possibly fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own, at which point the a ...

s are 1 mm long, and in athwart 0.5 mm.

Larvae A larva (; plural larvae ) is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle. The ...

of the species are 10–18 mm long and 2.1 mm wide.

Pupa A pupa ( la, pupa, "doll"; plural: ''pupae'') is the life stage of some insects undergoing transformation between immature and mature stages. Insects that go through a pupal stage are holometabolous: they go through four distinct stages in their ...

are 9 mm long, and the abdomen is 2.8 mm wide. ''Усачи Северной Азии (Cerambycinae)'' / . — Новосибирск: «Наука», 1981. — Т. II. — С. 175—179. — 215 с. — 1000 экз Distribution of these beetle extends from the European Atlantic coastline to the Southern Ural Mountains, from southern Sweden and Norway to North Africa and Syria. It is also distributed throughout Japan and North America. Larvae develop in and under the bark of various deciduous tree species, causing damage. Larvae pupate in the

spring Spring(s) may refer to: Common uses * Spring (season), a season of the year * Spring (device), a mechanical device that stores energy * Spring (hydrology), a natural source of water * Spring (mathematics), a geometric surface in the shape of a ...

. The beetle's life cycle lasts one year in central and southern parts, and two years in northern climes.Экологический центр «Экосистема»
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References

Woodboring beetles Phymatodes Building defects Beetles described in 1758 Taxa named by Carl Linnaeus {{Callidiini-stub