| Euura triandrae | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Suborder: | Symphyta |
| Family: | Tenthredinidae |
| Genus: | Euura |
| Species: | E. triandrae |
| Binomial name | |
| Euura triandrae (Benson, 1941) | |
| Synonyms | |
Pontania triandraeBenson | |
Euura triandrae is a species of sawfly belonging to the family Tenthredinidae (common sawflies). The larvae feed on the leaves of almond willow ( Salix triandra ) and was first described in 1941.
The gall is an ovoid, bean-shaped gall, up to 8 mm x 4 mm in size, with a hard thick red wall when occupied. There are often two galls to a leaf, on either side of the midrib, and they are almost equally prominent on the both sides of a leaf. Galls of E. triandrae are found on almond willow (S. triandra). There are usually two broods in a year (i.e. bivoltine. [1]
Euura triandrae is one of three closely related species in the Euura proxima group. The others members of the group are,
This species has been found in Great Britain (England), the Netherlands, Norway and Sweden. [1] [2] [4]
Euura is a genus of sawflies of the family Tenthredinidae, subfamily Nematinae. Some of the larvae feed externally on plants and some form plant galls on willows (Salix species). In the case of the gall-forming species, when the female lays her eggs she injects a stimulant and the gall starts to form before the eggs hatch. Most sawfly galls are hard and individual larva tend to inhabit the gall, feeding on the tissue and leave the gall to pupate in the soil. Most of the species are monophages although the type species, Euura mucronata, is polyphagous feeding on over thirty species of willow.
Euura weiffenbachiella is a species of sawfly belonging to the family Tenthredinidae. The larvae forms galls on creeping willows. E. weiffenbachiella is one of a number of closely related species which is known as the Euura atra subgroup.
Euura oblita is a species of sawfly belonging to the family Tenthredinidae. The larvae feed on the leaves of willows and was first described by Jean Guillaume Audinet-Serville in 1823.
Euura venusta is a species of sawfly belonging to the family Tenthredinidae. The larvae feed within the leaf-stalk of willows forming a gall. The sawfly was first described by Carl Gustav Alexander Brischke in 1883.
Euura testaceipes is a species of sawfly belonging to the family Tenthredinidae. The larvae feed within the leaf-stalk (petiole), or midrib of a leaf, on willows forming a gall. The sawfly was first described by Carl Gustav Alexander Brischke in 1883. E. testaceipes is one of three closely related species known as the Euura amerinae species subgroup. The other members of the group are E. amerinae and E. venusta
Euura dolichura is a species of sawfly belonging to the family Tenthredinidae. It was first described by Carl Gustaf Thomson in 1871. The larvae feed within galls on the leaves of willow. Some of the Euura species of sawfly are closely related and placed in groups of similar species. E. dolichura is a member of the Euura dolichura species group.
Euura nigricantis is a species of sawfly belonging to the family Tenthredinidae. The larvae feed within galls on the leaves of dark-leaved willow. It was first described by Jens-Peter Kopelke in 1986.
Euura proxima is a species of sawfly belonging to the family Tenthredinidae. The larvae feed on the leaves of willows, creating galls and was described by Jean Guillaume Audinet-Serville in 1823.
Euura bridgmanii is a species of sawfly belonging to the family Tenthredinidae. The larvae feed on the leaves of sallows. It was first described by the entomologist Peter Cameron in 1883.
Euura vesicator is a species of sawfly belonging to the family Tenthredinidae. The larvae feed internally in a gall on the leaves of purple willow and its hybrids. It was first described by Johann Jacob Bremi-Wolf in 1849.
Euura pustulator is a species of sawfly belonging to the family Tenthredinidae. The larvae feed internally in a gall formed on the leaves of tea-leaved willow and diamondleaf willow.
Euura herbaceae is a species of sawfly belonging to the family Tenthredinidae. The larvae feed internally in a gall formed on the leaves of dwarf willow and polar willow. Galls of E. aquilonis are similar and the larvae need to be examined to tell them apart.
Euura aquilonis is a species of sawfly belonging to the family Tenthredinidae. The larvae feed internally in a gall formed on the leaves of dwarf willow and polar willow. Galls of E. herbaceae are similar and the larvae need to be examined to tell them apart.
Euura arbusculae is a species of sawfly belonging to the family Tenthredinidae. The larvae feed internally in a gall formed on the leaves of mountain willow.
Euura myrsiniticola is a species of sawfly belonging to the family Tenthredinidae. The larvae feed internally in a gall formed on the leaves of whortle-leaved willow.
Euura crassipes is a species of sawfly belonging to the family Tenthredinidae and was first described by Carl Gustaf Thomson in 1871. The larvae feed internally in a gall formed on the leaves of downy willow.
Euura pedunculi is a species of sawfly belonging to the family Tenthredinidae. The larva feed within galls on the leaves of sallows. It was first described by Theodor Hartig in 1837.
Euura viminalis is a species of sawfly belonging to the family Tenthredinidae. The larva feed within galls on the leaves of willows. It was first described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae.
Euura collactanea is a species of sawfly belonging to the family Tenthredinidae. The larva feed within galls on the leaves of willows. It was first described by Arnold Förster in 1854.
Euura arcticornis is a species of sawfly belonging to the family Tenthredinidae. The larva feed within galls on the leaves of willows. It was first described by Friedrich Wilhelm Konow in 1904.