|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Agriculture / Faculty of Agriculture >
Insecta matsumurana. New series : journal of the Faculty of Agriculture Hokkaido University, series entomology. >
New Series 79 >
The acuminata species-group of Unaspis, with particular reference to the perivulvar disc pores (Sternorrhyncha: Coccoidea: Diaspididae)
| Title: | The acuminata species-group of Unaspis, with particular reference to the perivulvar disc pores (Sternorrhyncha: Coccoidea: Diaspididae) |
| Authors: | Takagi, Sadao Browse this author |
| Issue Date: | Oct-2023 |
| Publisher: | The Research Faculty of Agriculture, Hokkaido University |
| Journal Title: | Insecta matsumurana. New series : Journal of the Research Faculty of Agriculture Hokkaido University, series entomology |
| Volume: | 79 |
| Start Page: | 55 |
| End Page: | 79 |
| Abstract: | 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. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/90639 |
| Appears in Collections: | Insecta matsumurana. New series : journal of the Faculty of Agriculture Hokkaido University, series entomology. > New Series 79
|
|
