A Study of the Hatching Process in Aquatic Invertebrates. XV. Donacia palmata OLIV. (Coleoptera, Chrysomelidae) and Paraponyx maculata (CLEMENS) (Lepidoptera, Pyralidae, Nymphulinae)
✍ Scribed by Prof. Dr. Charles C. Davis
- Publisher
- John Wiley and Sons
- Year
- 1965
- Tongue
- English
- Weight
- 637 KB
- Volume
- 50
- Category
- Article
- ISSN
- 1434-2944
No coin nor oath required. For personal study only.
✦ Synopsis
Previous studies on hatching mechanisms in the eggs of aquat,ic invertebrates (list8s are given DAVIS 1964agiven DAVIS , 1964b) have been continued with two insects: the chysomelid beetle, Donacia palmata OLIV., and t,he aquatic moth. Paraponyx maculata (CLEMENS).
1. M a t e r i a l s
Kumerous egg masses of Donucia pabnata, and much smaller numbers of the eggs of Paraponyx macztlatn were collect,ed on t,he lower surfaces of the floating leaves of water lilies (Nymphaea sp.) a t Lake Punderson, Geauga County, Ohio on July 17, 1963. The eggs were returned to the laborat,ory, detached from their supports, and examined in Syracuse watch glasses by the use of a stereozooin dissecting microscope magnifying from 7 to 60 times. Adults were not collected for either of the species, but the beetle has tent,atively been identified as D. p a h a t a from figures of the eggs in M A C GILLIVRAY (1903) and from comparisons wit,h eggs of other species given by HOFFMAN (1940). The moth has been conditionally identified as P. ~naculata on the basis of figures of the first and second larval instars given by WELCH (1916), the name being confirmed by reference to LANCE (1956).