''Tyrpophloeus'' is a
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
bark beetle
A bark beetle is the common name for the subfamily of beetles Scolytinae. Previously, this was considered a distinct family (Scolytidae), but is now understood to be a specialized clade of the "true weevil" family (Curculionidae). Although th ...
s. About 12
species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
comprise the genus, ranging from North America to Europe and Asia. The genus is little-known, but ''
T. populi'' has recently become important as the causative agent of sudden
aspen
Aspen is a common name for certain tree species in the Populus sect. Populus, of the ''Populus'' (poplar) genus.
Species
These species are called aspens:
* ''Populus adenopoda'' – Chinese aspen (China, south of ''P. tremula'')
* ''Populus da ...
decline.
Other species' host are mainly
poplars,
willow
Willows, also called sallows and osiers, of the genus ''Salix'', comprise around 350 species (plus numerous hybrids) of typically deciduous trees and shrubs, found primarily on moist soils in cold and temperate regions.
Most species are known ...
s and
alder
Alders are trees of the genus ''Alnus'' in the birch family Betulaceae. The genus includes about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few species ex ...
s.
[Süda, I. ''Trypophloeus'' Fairmaine in Estonia and neighbouring countries, Eesti Metsamajanduse ja Looduskaitse Institut, Estonia]
Partial species list
* ''
Trypophloeus alni''
* ''
Trypophloeus asperatus''
* ''
Trypophloeus bispinulus''
* ''
Trypophloeus discedens''
* ''
Trypophloeus klimeschi''
*
Trypophloeus nitidus Swaine, 1912
* ''
Trypophloeus populi'' Hopkins, 1915
* ''
Trypophloeus striatulus (''also known as the willow bark beetle) Mannerheim, 1853
* ''
Trypophloeus thatcheri''
References
Scolytinae
Curculionidae genera
{{Scolytinae-stub