Dragonflies and Damselflies of the West (Princeton Field by Dennis Paulson

By Dennis Paulson

Dragonflies and Damselflies of the West is the 1st totally illustrated box advisor to all 348 species of dragonflies and damselflies in western North the USA. Dragonflies and damselflies are huge, stunningly appealing bugs, as comfortably observable as birds and butterflies. This detailed advisor makes settling on them easy--its compact measurement and easy layout make it the one consultant you wish within the box. each species is generously illustrated with full-color photos and a distribution map, and structural positive factors are illustrated the place they relief in-hand identity.

Detailed species bills comprise info on measurement, distribution, flight season, comparable species, habitat, and average historical past. Dennis Paulson's advent offers a necessary primer at the biology, normal historical past, and conservation of those very important and interesting bugs, in addition to useful how to realize and picture them.

Dragonflies and Damselflies of the West is the sphere advisor naturalists, conservationists, and dragonfly fans were expecting. Covers all 348 western species intimately contains a wealth of colour images offers a colour distribution map for each species comprises valuable identity assistance Serves as a necessary creation to dragonflies and their typical historical past

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Extra info for Dragonflies and Damselflies of the West (Princeton Field Guides)

Sample text

Entire body metallic green, looks blue when backlighted. Wings with terminal one-fifth black. Female: Colored as male or somewhat more bronzy- green, usually with white pseudostigma and with black wingtips less crisply defined. Some have only hindwing tips black; others have clear or entirely dusky wings. Immature with reddish eyes, duller body color. Identification No similar species in its range in the West. Often occurs with Ebony Jewelwing, which is larger, with broad black wings. Some female Sparkling have darkish wings, never as dark as Ebony, and distinctly narrower.

Straighten the abdomen of each specimen, arranging the legs so they do not obscure the genitalia on the second abdominal segment of males. Line up each pair of wings so one lies under the other, and separate the forewings slightly from the hindwings to allow easier study of the wing venation. , Rubbermaid®) container for 12–24 hr. Cut off a bit of both lower corners of the envelope so the acetone drains when you lift the envelope out. Acetone extracts fat and water from specimens, and they dry much better and with better color preservation than when merely air- dried.

Eyes brown over tan, paler than in male. Duller than male, dark colors of body vary from matte black to metallic green to metallic red (head and thorax only). Wings vary from almost uncolored to diffuse orange wash at base to dark orange filling same area as red in male. Pale stigma obvious in East, including Texas, smaller but still present (rarely lacking) from west Texas to southeastern California, absent in Pacific coast populations. Stigma typically paler and more contrasty in female than in male.

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