The acuminata species-group of Unaspis, with particular reference to the perivulvar disc pores (Sternorrhyncha: Coccoidea: Diaspididae)

Takagi, Sadao

Insecta matsumurana. New series : Journal of the Research Faculty of Agriculture Hokkaido University, series entomology, 2023, 79, 55-79

Permalink : https://hdl.handle.net/2115/90639

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アクセス権	open access
URI	https://hdl.handle.net/2115/90639
タイトル	The acuminata species-group of Unaspis, with particular reference to the perivulvar disc pores (Sternorrhyncha: Coccoidea: Diaspididae)
著者	著者名 Takagi, Sadao
言語	英語
発行日	2023-10
出版者	The Research Faculty of Agriculture, Hokkaido University
収録物名	Insecta matsumurana. New series : Journal of the Research Faculty of Agriculture Hokkaido University, series entomology
巻(号)	79
ページ	55-79
抄録	Three species of Unaspis occurring in tropical Asia and another one in northeastern Asia are dealt with: U. acuminata (Green), broadly distributed in tropical Asia, U. atricolor (Green), occurring in Sri Lanka and South India, U. pallidicolor, n.sp.,described from Sabah, Borneo Island, and U. turpiniae Takahashi, described from Taiwan and occurring also in southern Japan. These species agree particularly in having the perivulvar disc pores occurring in ‘the acuminata-formula’: 4(6-6)(4-4)=24, or in variations of this formula. They are ovoviviparous, and, therefore, assumed to have no function of the perivulvar disc spores. In spite of this, these disc pores persist, occurring exactly or nearly in the definite pattern. Speculation is made on the original formation and phenotypic reappearance of this static trait.
資源タイプ	紀要論文
出版タイプ	Version of Record
PISSN	0020-1804
NCID	AA0067559X