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Bark Louse - Valenzuela flavidus
Bark Louse - Valenzuela flavidus


Valenzuela flavidus
Valenzuela flavidus belong to the genus Valenzuela, in the order booklice (Psocoptera), the suborder Psocomorpha, the infraorder Caeciliusetae, the superfamily Caeciliusoidea, the family Caeciliusidae, the subfamily Caeciliusinae and the tribe Coryphacini. This booklice species is common and widespread throughout the world.
Barkfly - Valenzuela flavidus - Top view
Barkfly - Valenzuela flavidus - Top view
The bodies of Valenzuela flavidus are yellowish to light grey in colour. They have long, thin antennae with 13 segments. Their mouthparts consist of an intermediate form of chewing and sucking tools. The bright, upper surface of the thorax bears a brown patch at the front and laterally. The wings are dark and their veins stand out clearly. Dark coloured spots can be seen on the upper surface of the wings (on both sides behind the scutellum and extending out from there. The males’ forewings at their rear edge are reversed like a hook and thus hand along the thicker front edge of the rear wing, while the females have stunted forewings or no forewings at all.
Valenzuela flavidus live on various plants, tree trunks and tree bark. They feed, amongst other things, on fungus. They have a life expectancy of up to 12 weeks. Females are capable of laying up to 120 eggs in a lifetime. When conditions are favourable (in buildings) they can produce up to 8 new generations.

Valenzuela flavidus
Swedish namesMörkribbad fransvingeslända
AuthorStephens, 1836
Eco zoneTerrestrial
Distribution
Continents:

Eurasia
Europe
North Europe (British Isles (United Kingdom (Great Britain), Ireland), Germany, Scandinavia (Norway, Sweden, Denmark), Fennoscandia (Finland)), West Europe (Austria, France, Switzerland, Benelux (Belgium, Netherlands, Luxembourg)), South Europe (Italy (North Italy, South Italy), Iberian Peninsula (Spain, Portugal)), Central Europe (Hungary, Poland, Czech Republic, Slovakia), Southeast Europe (Romania, Yugoslavia (Slovenia, Croatia, Bosnia and Herzegovina, Serbia and Montenegro, Macedonia), Bulgaria, Greece)
Asia
Far East (East Asia (Taiwan, Japan, Mongolia)), West Asia (Near East (Turkey))
Russia
America
North America
Mexico, Canada, USA, Bermuda Islands
Central America
Nicaragua
Africa
North Africa
Macaronesia (Canary Islands, Azores, Madeira)


Ecozones: Nearctic

Distribution by Synonymus:
Psocus flavicans   Taiwan
Caecilius flavidus   Nearctic, North Italy, South Italy
CountriesAustria, Belgium, Bosnia and Herzegovina, Bulgaria, Canada, Croatia, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Japan, Luxembourg, Macedonia, Mexico, Mongolia, Netherlands, Nicaragua, Norway, Poland, Portugal, Romania, Russia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Taiwan, Turkey, USA, United Kingdom
Links and ReferencesValenzuela flavidus in faunaeur.org
Valenzuela flavidus in itis.gov
Valenzuela flavidus in dyntaxa.se
Valenzuela flavidus in Wikipedia (English)

Description of images / photos
Photography with Cameras
Nikon D3x, Nikon D300, Canon 50D
Image editing with Photoshop
1. Bark Louse - Valenzuela flavidus
2. Barkfly - Valenzuela flavidus - Top view
Quick search: Mouth - Flavidus - Valenzuela - Forewings - Edge - Front
Dark - Surface - Rear - Females - Bark - Booklice - Wings - Tree
Taxonomy
ClassInsecta
Insects, True insects
SubclassPterygota
Winged insects
InfraclassNeoptera
Wing-folding insects
SuperorderParaneoptera
OrderPsocodea
Barklice, Lice, Booklice, Parasitic Lice
SuborderPsocomorpha
InfraorderCaeciliusetae
SuperfamilyCaeciliusoidea
FamilyCaeciliusidae
Lizard Barklice
SubfamilyCaeciliusinae
TribeCoryphacini
GenusValenzuela
Speciesflavidus
Valenzuela flavidus
AuthorStephens, 1836
 
Synonyms
Caecilius aurantiacus
Caecilius flavidus
Caecilius strigosus
Psocus aurantiacus
Psocus boreellus
Psocus flavicans
Psocus flavidum
Psocus flavidus
Psocus ochropterus
Psocus striatus
Psocus subpunctatus
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Keywords
ABCDEFGHIJKLM
NOPQRSTUVWXYZ
German Flag Valenzuela flavidus
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