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Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Dorsal view of a Kogotus (Perlodidae) Stonefly Nymph from Mystery Creek #199 in Washington
This one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this ID.
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Arthropod Family Asellidae (Cress Bugs)

Cress Bugs are a common invertabrate in PA spring creeks. They are significant food forms for trout where found in abundance.
Family Range

Specimens of the Arthropod Family Asellidae

1 Male Adult
1 Adult

Discussions of Asellidae

Help to get some specimens of the isopod Caecidotea communis
11 replies
Posted by Leonardo on Mar 28, 2013
Last reply on Mar 29, 2013 by Leonardo
My name is Leonardo GarcĂ­a, I am a biologist intern in the National Autonomous University of Mexico and I'm doing my thesis with title "Morphological variation in the genus Caecidotea isopods (Packard, 1871) (Crustacea: Peracarida: Isopoda) of Mexico." Inside the National Collection of Crustacean, Biology Institute (UNAM).

I was wondering if somebody can help me to get some specimens of the specie Caecidotea communis and send them to me to continue with my thesis work. It would help and enrich my study.

Thanks for your attention

Leo

Start a Discussion of Asellidae

Arthropod Family Asellidae (Cress Bugs)

Taxonomy
Genus in Asellidae
CaecidoteaCress Bugs
2
6
Genus in Asellidae: Caecidotea
Family Range
Common Names
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