Dysaphis crataegi,thehawthorn-carrot aphid,is anaphidin the superfamilyAphidoideain the orderHemiptera.It is a true bug and sucks sap from plants.
| Dysaphis crataegi | |
|---|---|
| |
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hemiptera |
| Suborder: | Sternorrhyncha |
| Family: | Aphididae |
| Genus: | Dysaphis |
| Species: | D. crataegi
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| Binomial name | |
| Dysaphis crataegi (Kaltenbach 1843)
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Taxonomy
editThe hawthorn-carrot aphid wasfirst describedby the German entomologistJohann Heinrich Kaltenbachin 1843.[1]It has threesubspeciesin Europe. All overwinter on their primaryhost,hawthorntrees (Crataegus) spp., but each migrates to a different secondary host in the familyApiaceaeduring the summer;D. c. crataegimoves towild carrot(Daucus carota),D. c. kunzeitowild parsnip(Pastinaca sativa) andD. c. aethusaetohedge parsley(Torilisspp.) orfool's parsley(Aethusa cynapium). Two further subspecies are found to Asia.[2]
Description
editOn the primary host, these aphids are about 2 mm (0.08 in) long, with shortantennaeand shortsiphunculi,greenish-grey and dusted with wax particles. On the secondary host,winglessviviparousfemales are greenish-grey or yellowish-grey, again dusted with fine wax particles. Winged viviparous females are greyish-red with black markings. Egg-laying females are reddish-brown and winged males are reddish with black markings.[3]
Ecology
editThe hawthorn-carrot aphid migrates to its primary host in late summer and forms red, curlinggallson its leaves. The following spring, females move to its secondary host, an umbellifer in the family Apiaceae, and produce live offspring, When these nymphs are sufficiently mature, they produce further live young. Most offspring are wingless, but some winged females are produced which are able to colonize new secondary hosts. In late summer winged females and males are produced and migrate to hawthorn trees. These aphids are attended by ants on both their primary and secondary hosts.[3]
References
edit- ^"SpeciesDysaphis (Dysaphis) crataegi(Kaltenbach, 1843) ".Aphid Species File.Retrieved18 October2017.
- ^"Dysaphis crataegisp. group (Hawthorn - umbellifer aphids) ".Genus Dysaphis.InfluentialPoints.Retrieved18 October2017.
- ^abHeie, Ole E. (1991).The Aphidoidea (Hemiptera) of Fennoscandia and Denmark. IV: Family Aphididae: Part 1 of Tribe Macrosiphini of Subfamily Aphidinae.BRILL. pp. 74–75.ISBN90-04-09514-4.
External links
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Media related toDysaphis crataegiat Wikimedia Commons