Keys to the Water Quality Indicative Organisms of the Southeastern United States

abdominal segment absent Alabama algae anal proleg Antennae basal bifid branches bundles caddisflies Cambarus carapace caudal Cells central projection chironomids claw of anal County coxa crayfishes dark Decapoda diameter distal Dorsal view drainage systems elongate Faxon filamentous fishes Florida freshwater front leg fungi Gastropoda genera genus Georgia Gills on segment Group habitats hair setae Heterocysts hind Hindwing pads Hobbs Hydroptilidae identification Labial plate Labrum lakes lamellae larvae Lateral view left pleopods lentic habitats mandibles median mesial process Mesonotum mesothorax metanotum metathorax Mississippi naiads North America Ohio Orconectes Oscillatoria pair palpi paralabial Pectinate setae Pelecypoda Penis sheaths pereiopods plastids pleopod pollution posterior prolegs present Procambarus prolegs pronotum River Ross rostrum sclerotized setae shell Fig species specimens spines streams subfamily surface Tarsal claws teeth Tennessee tergite thoracic Threads tibia tooth transverse Trichoptera Tubificidae Univ valve ventral setae Ventral view wall worms