Document used in this potential ID

[ulr=]http://www.ephemeroptera-galactica.com/pubs/pub_m/pubmccaffertyw1984p173.pdf[/ulr]



Mack.

Moved from Mayflies.

( Notice to people that Cite from BG ). We are still not 100% sure on this ID. We used McCafferty and Provonsha 1984 for Anepeorus simplex to determine this potential ID. Spinadis simplex is a very rare insect to collect, in fact this is the very first photo that we believe represents it. The big problem is few exist in collections and making comparisons for ID's even more difficult. This has been looked at by the best in the world in my Mayfly ID page and it sits as (unknown or possible S simplex). We have little doubt about it being Heptageniidae for many reasons 1; two tails, 2; heavily band femora, 3; black crossveins in both sets of wings, 4; attached intercalaries.

First S simplex was Anepeorus in the past. In the paper used there are 4 specific features to simplex that no other Heptageniidae have. 1, projections on the lateral sides of the pronotum, 2; small odd shaped head, 3; elongated body 4; triangle shaped pronotum. This sample meets all 4 criteria. If you look close at the dorsal view of pronotum there is a projection. In the paper figure 1 they show the pronotum with 2 projections on Spinadis wallacei now a synonym of S simplex. Although not a match to this sample by the 2 projections as this sample has 1, it aligns with the concept very well.

Why are we the unsure of the ID. “Environment” This sample came from ponds in a farm area. To the best of our knowledge meaning everybody involved with this. S simplex resides in moving water and in large rivers. However as Doug Stangy said on the In Fishermen "just cause they aren’t on the map doesn’t mean they aren’t there". That is still not saying it is S simplex it just means more research really needs to be done on the Genus and species concept before a true conclusion can be made.

Ken Please load photo from group page where I circled the projection in red, that is critical to this post.


Mack.