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The Sternorrhyncha suborder of the Hemiptera contains the aphids, whiteflies, and scale insects, groups which were traditionally included in the order Homoptera. "Sternorrhyncha" refers to the rearward position of the mouthparts relative to the head.

Sternorrhyncha
Aphididae (aka).jpg
An aphid.
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Suborder: Sternorrhyncha[1]
Superfamilies

Aleyrodoidea
Aphidoidea
Coccoidea
Phylloxeroidea
Psylloidea

Distributed worldwide, all members of this group are plant-feeders (phytophagous), and many are major crop and ornamental pests.

Many exhibit modified morphology and/or life cycles, including phenomena such as flightless morphs, parthenogenesis, sexual dimorphism, and eusociality.

Contents

PhylogenyEdit

The phylogeny of the Sternorrhyncha, inferred from analysis of small subunit (18S) ribosomal RNA, is shown in the cladogram.[2]

Sternorrhyncha

Psylloidea (jumping plant lice, etc)  




Aleyrodoidea (whiteflies)  




Coccoidea (scale insects)  


Aphidomorpha

Phylloxeroidea (phylloxera bugs)  



Aphididae (aphids)  






GroupsEdit

Well-known groups in the Sternorrhyncha include:

ReferencesEdit

  1. ^ "ITIS standard report - Sternorrhyncha". Integrated Taxonomic Information System. Retrieved 27 July 2014. 
  2. ^ "Phylogeny of Insects". What-When-How. Retrieved 21 February 2018. 

External linksEdit