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Priocnemis perturbator
''Priocnemis perturbator'' is a relatively large species of spider wasp which is quite common in Europe. It was previously considered to be the same species as the closely related ''P. susterai'' which were lumped as ''P. fuscus'' and this means that some early observations of behaviour are not applicable to either species.〔 Even now the two species need close observation under a microscope or hand lens to distinguish them from each other.〔
==Biology==
Little is known about the nests of ''P. perturbator'' but other ''Priocnemis'' species generally use cavities which they find themselves and in which they may excavate several cells.〔 ''P. perturbator'' is univoltine and the flight period is from May to September. As stated in the introduction many of the observations of Priocnemis collecting prey refer to the invalid taxon ''P. fuscus'' but they are thought to take larger spiders of the families Lycosidae and Gnaphosidae. Females have been seen on the ground, apparently searching for prey . The spider ''Trochosa terricola'' is a known prey item.〔 This species is one of a handful of spider wasps, all of them relatively large and including ''Priocnemis susterai'' and ''Anoplius viaticus'' which overwinter as adults in Britain, appearing in the following spring. ''Priocnemis perturbator,'' which is reasonably common and has long antennae, can often be seen nectaring on Wood Spurge ''Euphorbia amygladoides''〔 but it has also been seen nectaring on dandelion, blackthorn, hawthorn and willow.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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