» Order Ephemeroptera (Mayflies)
8 families aren't included.
This is page 4 of specimens of Ephemeroptera. Visit the main Ephemeroptera page for:
- The behavior and habitat of Ephemeroptera.
- 67 underwater pictures of Ephemeroptera.
- 2 streamside pictures of Ephemeroptera.
Pictures of 699 Mayfly Specimens:
Male Epeorus pleuralis (Quill Gordon) Mayfly Spinner
View 10 PicturesI spent (Spent: The wing position of many aquatic insects when they fall on the water after mating. The wings of both sides lay flat on the water. The word may be used to describe insects with their wings in that position, as well as the position itself.) most of the day looking for Epeorus pluralis duns or spinners without any luck on the major Catskill rivers. Finally in the evening I arrived at a small stream somebody had recommended, and when I got out of the car I was happy to find that I had parked in the middle of a cloud of male spinners. Male Baetidae (Blue-Winged Olives) Mayfly Nymph
View 10 PicturesThis male nymph is probably in its final instar (Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.). The wing pads (
Wing pad: A protrusion from the thorax of an insect nymph which holds the developing wings. Black wing pads usually indicate that the nymph is nearly ready to emerge into an adult.) are extremely black and the large turbinate (
The wing pads on this final instar Baetidae
mayfly nymph are extremely dark.
Turbinate: Shaped like a top or elevated on a stalk; usually refers to the eyes of some adult male Baetidae mayflies which are wider near the tip than at the base.) eyes are very apparent inside the nymph's head.
This male Baetidae
dun has slightly turbinate eyes.