Dragonflies and Damselflies are of the Order Odonata . Dragonflies tend to be larger and thicker with wings that are held straight out, whereas damselflies are small and slender with wings held along the body.
Dragonflies (suborder Anisoptera )
Skimmers (family Libellulidae )
Our most common dragonflies, they have the greatest visual diversity. Many are small or medium in size.
Dot-tailed Whiteface (Leucorrhinia intacta ) – Mostly black with a white face. Females have yellow splotches on the abdomen, males have a single dot. (photos © Gordon Johnston and Ken Allison )
Black Saddlebags (Tramea lacerata ) – Black body, light spot on top of abdomen. Large black “saddlebag” blotches on base of hind wings. (photos © Robert Simons and Cameron Eckert )
Darners (family Aeshnidae )
These are large, fast-flying dragonflies that you’ll usually see in the air. Eyes are noticeably large.
California Darner (Rhionaeschna californica ) – A smallish species. Blue eyes and spots, females can be more yellowish. More distinct black line across face than in Blue-eyed Darner. Upper appendages simple. (photos © Zach Kemp and Jim Johnson )
Blue-eyed Darner (Rhionaeschna multicolor ) -Sky-blue face and markings, though females sometimes greenish-yellow. Pale brown facial line. Upper appendages strongly forked. (photos © Jim Johnson and Juan Miguel Artigas Azast )
Emeralds (family Corduliidae )
Named for their green eyes or metallic green thoraxes. Tend to be found in marshes, lake edges, or cool ponds.
Clubtails (family Gomphidae )
Have a widened end of the abdomen, especially visible in males. Unlike other dragonflies (but like damselflies), their eyes are often separated. Prefer clean, clear, fast-moving streams, thus development or logging near waterways is a problem.
Olive Clubtail (Stylurus olivaceus ) – Black abdomen, grayish-green thorax, and large blue eyes. Lacks diagonal black stripes on thorax, unlike Pacific Clubtail. (photos © Zach Kemp and Jim Johnson )
Grappletail (Octogomphus specularis ) – Abdomen black with fine yellow stripe above. Eyes dark greenish-gray on yellow face. Thorax yellow with black swath. (photos © Jim Johnson and Jim Johnson )
Pale Snaketail (Ophiogomphus severus ) – Black and pale abdomen with narrow yellow triangles above. Thorax is green with small darker spots above. (photos © Zach Kemp and Nick Block )
Spiketails (family Cordulegastridae )
Named due to females, which have spiked ovipositor which they use to deposit eggs perpendicular to stream margins while flying vertically.
Pacific Spiketail male (Cordulegaster dorsalis ) – Very large. Black with vivid yellow spots on abdomen and diagonal lines on thorax. Small eyes are blue. (photos © dkaralun and Zach Kemp )
Pacific Spiketail female (Cordulegaster dorsalis ) – Females use their spike to lay eggs in clear shady forest streams, thus they are vulnerable to logging. (photo © dkaralun )
Petaltails (family Petaluridae )
These are the most ancient of all living dragonfly families. There is an Australian species that reaches 5 inches long, making it the largest living dragonfly.
Black Petaltail female (Tanypteryx hageni ) – Black with distinct pale yellow marks. Dark eyes don’t touch. Oregon Conservation Strategy Species, in forested streams at moderate-to-high elevation. (photos © Matt Hunter )
Black Petaltail male (Tanypteryx hageni ) – Larva live in burrows on streambanks, making it the only local dragonfly species that is not fully aquatic in the larval stage. (photos © Matt Hunter )
Damselflies (suborder Zygoptera )
Pond Damsels (family Coenagrionidae )
Our most commonly encountered damselfly family. Many are relatively small. Their larvae tend to require natural, non-polluted water bodies.
Pacific Forktail (Ischnura cervula ) – Mature females frosted blue thorax with black lines. Male thorax bluish-green on sides, black on top with tiny blue spots. Both have black abdomen with blue tip. (photo © Zach Kemp and dickwood )
Western Forktail (Ischnura perparva ) – Mature females frosted blue throughout. Males have green or blue-green thorax with black stripes and greenish dots on head. Both have black abdomen with blue end (photo © Zach Kemp and Jim Johnson )
Swift Forktail (Ischnura erratica ) – Mature females black thorax with greenish-blue to green stripes. Males black with blue stripes. Head black with green facial stripe and blue spots on top. Both have black abdomen, sometimes with blue at end. (photo © Jim Johnson and Jim Johnson )
Tule Bluet (Enallagma carunculatum ) – Females have blue/tan abdomen markings, lack blue tail. Male abdomen blue and black, on segments 3-7 black sections longer than blue. Thorax both blue with broad black stripe above, narrow stripe on sides. (photo © Jim Johnson and Don Henise )
Northern Bluet (Enallagma annexum ) – Segments 3-7 in males are more blue than black. Females only have blue rings on each segment. Lateral black stripe on thorax has small jag near the front. (photo © Cameron Eckert and Cameron Eckert )
Boreal Bluet (Enallagma boreale ) – Identical in appearance to Northern Bluet. Can only be identified by examining the male appendages under a microscope. (photo © Jim Johnson and Cameron Eckert )
Vivid Dancer (Argia vivida ) – Female gray with black marks including triangles. Male bright blue with similar black mark. Can be purple when cool. Wide urn-shaped top stripe on thorax and thin pinched side stripe. (photo © Cameron Eckert and Zach Kemp )
Emma’s Dancer (Argia emma ) – Female yellowish-tan with black marks, no triangles. Male lavender, rarely blue, with same black marks and blue tail. Straight narrow top stripe on thorax. (photo © Jim Johnson and Zach Kemp )
Western Red Damsel (Amphiagrion abbreviatum ) – Our only red damselfly. Females have tawny head/thorax, while in males it is black. (photo © Scott King and Zach Kemp )
Spread-winged Damselflies (family Lestidae )
Spreadwings are long and slender, unique in that they hold their wings at an angle rather than straight along the body like other damselfies.
Northern Spreadwing (Lestes disjunctus ) – Female light brown, dark above. Thorax has thin light lights, yellowish below. Male dark green abdomen with cloudy end. Thorax with thin blue lines, cloudy blue below. Straight appendages. (photo © Susan Blayney and Joanne Redwood )
Lyre-tipped Spreadwing (Lestes unguiculatus ) – Male and female are both similar to Northern Spreadwing, but appendages on end of abdomen are a “lyre” shape. (photo © Mark Kluge and Chantel )
Spotted Spreadwing (Lestes congener ) – Both sexes brown with darker markings. Thin light brown stripe on thorax, light below with 4 dark marks underneath. Males have blue eyes and cloudy end of abdomen. (photo © Joe Bartok and Alain Maire )
California Spreadwing (Archilestes californicus ) – Females drab brown. Males brown with blue eyes and cloudy blue abdomen tip. Thorax has white stripes on sides. (photo © Jim Johnson and Jim Johnson )
Broad-winged Damselflies (family Calopterygidae )
Large, broad-winged damselflies, often metallic in color. Found in streams and rivers.
River Jewelwing female (Calopteryx aequabilis ) – Female dark green with smoky wings and a white tip. Larva live in root masses in swift portions of forest streams. (photo © Suzanne Labbé )
River Jewelwing male (Calopteryx aequabilis ) – Male metallic green with the outer 1/3 of the wings black. Flutters and swoops around female in courtship flight. (photo © Jim Johnson )
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