Adelges

Life-forms

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Infraclassis: Neoptera
Cladus: Eumetabola
Cladus: Paraneoptera
Superordo: Condylognatha
Ordo: Hemiptera
Subordo: Sternorrhyncha
Superfamilia: Phylloxeroidea

Familia: Adelgidae
Genus: Adelges
Subgenera: Adelges – Aphrastasia – Cholodkovskya – Dreyfusia – Gilletteella – Sacchiphantes
Overview of species

A. abietis – A. cooleyi – A. kitamiensis – A. laricis – A. nordmannianae – A. piceae – A. tsugae – A. viridis
Name

Adelges Vallot, 1836: 72

Type species: Adelges laricis Vallot, 1836
fixation: monotypy

References
Primary references

Vallot, J.N. 1836. Observations sur deux insectes hémiptères qui vivent l'un sur le mélèze et l'autre sur le cafier. Comptes rendus hebdomadaires des séances de l'Académie des sciences 3: 72–73. BHL Reference page.

Additional references

Macfarlane, R.P. et al. 2010: [Chapter] NINE Phylum ARTHROPODA SUBPHYLUM HEXAPODA Protura, springtails, Diplura, and insects. Pp. 233-467 in Gordon, D.P. (ed.): New Zealand inventory of biodiversity. Volume 2. Kingdom Animalia. Chaetognatha, Ecdysozoa, ichnofossils. Canterbury University Press, Christchurch, New Zealand. ISBN 978-1-87725793-3

Links

Adelges Taxon details on Fauna Europaea
Adelges in the Aphid Species File database, accessed on 22/01/2014.

Adelges is a genus of insects which feed on conifers. Excepting galls formed by the spruce gall midge, galls are caused by aphid-like insects of the superfamily Phylloxeroidea (family Adelgidae) commonly known as the spruce gall adelgids. They have complex life cycles, some species feeding exclusively on spruce, others feeding on spruce and an alternate conifer. However, galls characteristic of each species are formed only on spruce. Six generations are usually needed to complete the 2-year cycle, and in the case of species having an alternate host, winged adults about 2 mm long are formed only in the generations that move from one host to the other.

The spruce gall adelgid (Adelges lariciatus Patch) occurs in alternate years on spruce and larch from Alberta to the Maritimes and in adjacent parts of the United States. The pale spruce gall adelgid (Adelges strobilobius Kaltenbach) has a similar range but prefers black spruce or red spruce to white spruce.

Species include:

Adelges abietis (Pineapple gall adelgid)
Adelges cooleyi (Gall adelgid)
Adelges piceae (Balsam woolly adelgid)
Adelges tsugae (Hemlock woolly adelgid)

Adelges tsugae
References

Bugguide.net. Genus Adelges