Piesmatidae

Ash-grey leaf bugs
Piesma maculatum
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hemiptera
Infraorder:	Pentatomomorpha
Superfamily:	Lygaeoidea
Family:	Piesmatidae Amyot & Audinet-Serville, 1843
Diversity
3-5 living genera with c. 40 species
Synonyms
Zosmenidae Dorhn, 1859

Zosmenidae Dorhn, 1859

Piesmatidae is a small family of true bugs, commonly called ash-grey leaf bugs. It contains a mere three living genera with over 40 described species altogether. The Piesmatidae are distributed mostly in the temperate Northern Hemisphere, with some occurring in Africa, Australia and South America. A common species found throughout the Americas is Piesma cinereum.

Ash-grey leaf bugs are small insects, some 2–4 mm overall. The head, thorax and the firm part of the wings are extensively dimpled. This resembles the similar pattern of the Tingidae of the infraorder Cimicomorpha, and was initially taken to signify a close relationship. It is due to convergent evolution however.

They feed on plant sap, mostly of Chenopodiaceae and Caryophyllaceae. Piesma linnavouri' have been found on Acacia (Fabaceae). Mcateella' have been found on many host plants but mostly Acacia and Proteaceae. The host plants of Miespa remain unknown.

There are only 3 unequivocally accepted extant genera of Piesmatidae:

Most of the approximately 40 named species are in the type genus Piesma, from which the subgenera Afropiesma and Parapiesma are sometimes split off. The genus Thaicoris was for some time placed here, but it has more recently been suggested that it is a member of the Thaumastocoridae.

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Wikipedia