Bright colors stair-stepped along the fore edge of this easy-to-use introductory insectopedia indicate its major categories: butterflies; moths; beetles; wasps, ants, and sawflies; two-winged flies; lacewings and snakeflies; sucking bugs; grigs; mantids; dragonflies and damselflies; springtails; aquatic adults; aquatic larvae; and non- insect arthropods. Within each of these categories, single pages feature particular insects represented by a large, color drawing, a highlighted box providing size and habitat, and a demotic and informative 250-300 word annotation. Acorn, a bug enthusiast, has chosen the biggest, most colorful, hardest to miss, or weirdest 125 of the approximately 25,000 species thought to inhabit Washington and Oregon. Annotation c. Book News, Inc., Portland, OR (booknews.com)