Well, close. They are all ephemerellids. Sorting out the various genera and species can get a little confusing. For us westerners, size only works as a way to separate them on individual watersheds as they can vary quite a bit from location to location. If the angler skips around alot and isn't up on the bugs in the water he is fishing, size isn't as much help if the hatch is smaller than size 8. However, size (among another few characters) does seem to work if the angler is familiar with their hatches on a particular stream. As a general rule of thumb:
a. Only the green drakes (and most flavs) have some shade of green/chartreuse/yellow on them (when freshly hatched), at least at the segment margins and under the thorax. Their bodies run from bright green to olive brown. This differentiates them from Timpanoga
, at least when they're fresh.
b. Drunella grandis
subspecies are the largest of the green drakes and have somewhat slimmer abdomens compared to their robust thoraxes. They have proportional length tails.
c. Just down in size from them is the species D. Doddsii
. It has a distinctive, radically tapered abdomen as thick as its thorax at the first segment and extremely short tails.
d. Smaller still is the super spiny D. Spinifera
. Luckily, the dun of this little monster is proportioned like a small grandis
, making it much easier to tell the three green drakes apart (in this size range there is also a diametrically opposite appearing species to spinifera
, the spineless D. pelosa
, but it is doubtful that anglers will run into these rarer and predominately coastal critters very often).
e. The smallest Drunella
species or "Flavs" can look like small green drakes and could be confused with spinifera
if they run large and again the angler doesn't know his water. They can also be confused with other ephemerellid species in their smaller sizes.
f. T. hecuba
subspecies are as long as D. grandis
, but are built more like D. doddsii
(bulkier). They are also brown from the get go with tan instead of green or yellow highlights. They are less leggy than grandis
Hope this helps,
Hmmm...Sounds a litlle like the infamous "Redacted Pond" I've heard so much about. ;)
No fish pics??? You holding out sir?!
Yep... I've fished this section of river a half dozen times this season with no sign of any other angler, flesh or spoor. You wouldn't believe the size and numbers of fish if I told you and it's one of the prettiest spots I've ever cast a fly on. 'Nuff said...:)