The Infraorder Coccomorpha (Insecta: Hemiptera).

@article{Hodgson2021TheIC,
  title={The Infraorder Coccomorpha (Insecta: Hemiptera).},
  author={Chris J. Hodgson and Barb Denno and Gillian W Watson},
  journal={Zootaxa},
  year={2021},
  volume={4979 1},
  pages={
          226227
        }
}
The scale insects (infraorder Coccomorpha) are the most morphologically specialised members of the Hemiptera. They form a monophyletic group within the suborder Sternorrhyncha, having one-segmented tarsi and a single claw (all other hemipterans have a double claw). They show extreme sexual dimorphism: the more-or-less sessile adult females are wingless and larviform, whereas the motile adult males mostly are winged and lack mouthparts. Within the Coccomorpha, 54 families are currently… 

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