✦ LIBER ✦
A variety of insects are attracted to water by reflected polarized light
✍ Scribed by R. Schwind
- Publisher
- Springer
- Year
- 1989
- Tongue
- English
- Weight
- 222 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0028-1042
No coin nor oath required. For personal study only.
✦ Synopsis
Permotipula cannot be one of the direct ancestors of the recent Diptera. As already outlined by Tillyard [3], the elongated median cell is a specialization of Permotipula as is the three-branched radial sector (there are extant Diptera with Rs being still four-branched, see also [4], and which are thus more primitive with respect to this character). A further autapomorphy of Permotipula is the reduction of the second anal vein.