Adelgidae
| Adelgidae Temporal range:
| |
|---|---|
| File:Adelges tsugae 1276001.jpg | |
| Hemlock woolly adelgid | |
| Scientific classification Edit this classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hemiptera |
| Suborder: | Sternorrhyncha |
| Infraorder: | Aphidomorpha |
| Superfamily: | Phylloxeroidea |
| Family: | Adelgidae Schouteden, 1909 |
| Genera | |
The Adelgidae[1] are a small family of the Hemiptera closely related to the aphids, and often included in the Aphidoidea with the Phylloxeridae or placed within the superfamily Phylloxeroidea as a sister of the Aphidoidea within the infraorder Aphidomorpha. The family is composed of species associated with pine, spruce, or other conifers, known respectively as "pine aphids" or "spruce aphids". This family includes the former family Chermesidae, or "Chermidae", the name of which was declared invalid by the ICZN in 1955.[2] There is still considerable debate as to the number of genera within the family, and the classification is still unstable and inconsistent among competing authors.[3]
There are about fifty species of adelgids known. All of them are native to the northern hemisphere, although some have been introduced to the southern hemisphere as invasive species.[4][5] Unlike aphids, the adelgids have no tail-like cauda and no cornicles.[6]
Adelgids only lay eggs, and never give birth to live nymphs as aphids do. Adelgids are covered with dense woolly wax. A complete adelgid life cycle lasts two years.[6] Adelgid nymphs are known as sistentes, and the overwintering sistentes are called neosistens.[7]
Rain can kill adelgids by dislodging eggs and sistentes from trees.[8]
Genera
[edit | edit source]- Adelges Vallot, 1836
- Aphrastasia Börner, 1909
- Cholodkovskya Börner, 1909
- Dreyfusia Börner, 1908
- Eopineus Steffan, 1968
- Gilletteella Börner, 1930
- Pineus Shimer, 1869
- Sacchiphantes Curtis, 1844
See also
[edit | edit source]References
[edit | edit source]- ^ Schouteden (1909) Rhynchota für 1908. Archiv für Naturgeschichte 75(2–2–2): 136–219 (p. 138 Adelginen).
- ^ insects being called "chermes" sometimes. Another name that was common was "dreyfusia" in other locations (The Balsam Woolly Aphid Problem in Oregon and Washington, Norman E. Johnson and Kenneth H. Wright, Research paper No. 18, United States Forest Service, United States Department of Agriculture, April, 1957).
- ^ A Historical Review of Adelgid Nomenclature Archived October 25, 2007, at the Wayback Machine, Matthew S. Wallace, Third Symposium on Woolly Hemlock Adelgids
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
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- ^ a b Bugs of the World, George C. McGumo, Facts on File Archived 2007-10-14 at the Wayback Machine, 1993, Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ page 724 of Imms' General Textbook of Entomology, Tenth Edition, volume 2, Augustus Daniel Imms, Richard Gareth Davies, Owain Westmacott Richards, Springer, 1977, Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ The Balsam Woolly Aphid Problem in Oregon and Washington, Norman E. Johnson and Kenneth H. Wright, Research paper No. 18, United States Forest Service, United States Department of Agriculture, April, 1957
External links
[edit | edit source]- File:Wikispecies-logo.svg Data related to Adelgidae at Wikispecies
- Error creating thumbnail: File missing Media related to Lua error in Module:Commons_link at line 62: attempt to index field 'wikibase' (a nil value). at Wikimedia Commons
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