This double-sided, 9" X 11 1/2", full-color, laminated field guide includes more than 70 pictures of freshwater macroinvertebrates and describes over 45 taxa of insect and non-insect aquatic organisms. The guide is printed on 80 lb. white cover stock and sealed in 7 mil laminate for durability and protection in the field.
Features of the guide:
- Contains many common aquatic organisms found in streams – mostly insect larvae, but also includes some aquatic adults and some non-insect macroinvertebrates
- the front of the guide focuses on common stonefly, mayfly, and caddisfly families
- the back of the guide contains other common insect and non-insect taxa
- insects are identified to the family level, with multiple examples shown for many of these families
- the macroinvertebrates are arranged by taxa (insect orders; non-insect phyla/classes)
- common name and classification are given for each organism
- 6 major classification groupings are color-coded (insects, arachnids, crustaceans, annelids, platyhelminthes, mollusks)
- size and other physical characteristics are listed for identification purposes
Macro groups represented:
- caddisflies - northern case-maker, saddle-case-maker, humpless case-maker, lepidostomatid case-maker, net-spinner, free-living, finger-net
- mayflies - ameletid, prong-gill, small minnow, spiny crawler, flat-headed
- stoneflies - golden, little yellow, little brown, little green, slender winter, giant, roach-like
- aldersflies & dobsonflies
- damselfly & dragonflies
- aquatic beetles - riffle beetles, predaceous diving beetles, water penny, whirligig
- true bugs - water boatman, water strider
- flies - mosquito, midges, black fly, crane fly
- arachnids - water mites
- crustaceans - scud, sow bug*, crayflish
*correction to guide: I've been informed that the sow bug image used in the guide is of a semi-aquatic or terrestrial species, not a true aquatic sowbug (even though it was found in a sample collected from a stream).
- worms - aquatic earthworm, leeches, flatworm
- mollusks - snails, limpet, clam, mussel
Copies are available for purchase -- $4.50 each, plus shipping and tax (WA residents)
For more information, contact:  ; or phone: 360-577-0494
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