Cydnidae


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Cydnidae

[′sid·nə‚dē]
(invertebrate zoology)
The ground or burrower bugs, a family of hemipteran insects in the superfamily Pentatomorpha.
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Although subsocial behavior has been reported for a number of families within the order, reports of parental care that extends to providing nymphs with a food source have only been recorded for 4 species belonging to the Cydnidae, subfamily Sehirinae; and to one species of the related Parastrachidae, despite the fact that the biology and behavior of many species of Cydnids are unknown because most of the species live underground.
The species of Cydnidae and Parastrachidae that exhibit progressive provisioning feed on seeds of members of the Lamiales, Santalales, and Gentianales, all of which are related groups within the Asteranae.
It is probable that because most of the species of Cydnidae have an underground life style, this kind of behavior has rarely been observed.
This structure is raised around the cap in a stable ring in Pentatomidae, but tends to project from the inner side of the shell in Acanthosomidae, Cydnidae, Scutelleridae, and Thyrocoridae (Javahery 1994; Candan 1997; Candan and Suludere 2003).
Pentatomidae and Scutelleridae have a T-shaped egg burster; Acanthosomatidae, Cydnidae, and Thyrecoridae have a Y-shaped egg burster (Shuzhi and others 1990; Javahery 1994).
Corixidae Trichocorixa calva (Say) Corixidae Hesperocorixa nitida (Fieber) Corixidae Hespercorixa vulgaris (Hungerford) Corixidae Sigara signata (Fieber) Cydnidae Amanestus pusillus Uhler Cydnidae Microporus obliguus Uhler Cydnidae Pangaeus bilineatus (Say) Cydnidae Sehirus cinctus (Palisot) Gelastocoridae Gelastocorus oculatus (F.
Shield Bugs (Hemiptera: Scutelleroidea: Scutelleridae, Corimelaenidae, Cydnidae, Pentatomidae).
Richmond (1962, 1968) did not record members of Blissidae, Geocoridae, Largidae or Cydnidae (the two species of the latter present in his 1962 list are actually members of the family Corimelaenidae) from Horn Island, all of which were found on Point Clear Island, although none of the species was common here.
Pentatomidae Eysarcoris guttiger (Thunberg) Nezara viridula Linnaeus Scotinophara lurida (Burmeister) Piezodorus hybneri (Gmelin) Eysarcoris ventralis (Westwood) Cydnidae Fromundus sp.