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Biorhiza pallida
''Biorhiza pallida'' is a gall wasp species in the family Cynipidae. This species is a member of the tribe Cynipini: the oak gall wasp tribe. Cynipini is the tribe partially responsible for the formation of galls known as oak apples on oak trees. These are formed after the wasp lays eggs inside the leaf buds and the plant tissues swell as the larvae of the gall wasp develop inside.
== Description ==
''Biorhiza pallida'' has a complex life cycle involving an agamic female that reproduces by parthenogenesis without a male during the summer, and a winter/spring generation of adults where individuals are either male or female. These mate and produce fertilised eggs.
The wingless agamic wasp is between long. The head is golden brown with mid-brown eyes and orange ocelli (simple eyes). The long antennae have fifteen segments and are orangeish-brown. The thorax, legs and bulbous, glistening gaster (abdomen) are yellowish-brown.〔(【引用サイトリンク】title=''Biorhiza pallida'' )〕
Male and female wasps that develop in the summer generation are smaller with a length between . The head, thorax and gaster are golden brown and translucent. The clear wings have dark veins and pale brown hairs. The eyes are large and dark in the case of the female and pale in the male. The other main difference between the sexes is the gaster, which is deep and narrow in the male and broad and tipped with an ovipositor in the female.〔
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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