A field guide to aquatic and semiaquatic organisms of sandy creek.

Belostoma lutarium

Belostoma lutarium is a species of giant water bug in the family Belostomatidae. It is found in North America.

Notonecta irrorata

Notonecta irrorata is a species of backswimmer native to North America first described by Philip Reese Uhler in 1879. Presence of N. irrorata in ponds is known to repel the oviposition of Culex mosquitoes.

Limnoporus canaliculatus

Limnoporus canaliculatus is a species of water strider in the family Gerridae. It is found in North America.

Red Swamp Crayfish

Procambarus clarkii is a species of cambarid freshwater crayfish, native to northern Mexico, and southern and southeastern United States, but also introduced elsewhere (both in North America and other continents), where it is often an invasive pest. It is known variously as the red swamp crawfish, red swamp crayfish, Louisiana crawfish, Louisiana ...more ↓

Tropisternus collaris

Tropisternus collaris, the collared water scavenger beetle, is a species of water scavenger beetle in the family Hydrophilidae. It is found in the Caribbean, North America, and South America.

Widow Skimmer

Widow Skimmer (Libellula luctuosa) is one of the group of dragonflies known as king skimmers. The nymphs live in the water, molting and growing until they are ready to emerge from the water and then molting a final time to reveal their wings.

Halloween Pennant

The Halloween pennant (Celithemis eponina) is a species of dragonfly in the family Libellulidae. It is native to eastern North America, including Ontario in Canada and the United States as far west as Colorado.

Blue Dasher

The blue dasher (Pachydiplax longipennis) is a dragonfly of the skimmer family. It is the only species in the genus Pachydiplax. It is very common and widely distributed through North America and into the Bahamas.

Eastern Pondhawk

Erythemis simplicicollis, the eastern pondhawk, also known as the common pondhawk, is a dragonfly of the family Libellulidae, native to the eastern two-thirds of the United States and southern Ontario and Quebec, Canada. It is a dragonfly of ponds and still waters. The species is distinguished in that the female is bright green with a banded abdomen and the mature ...more ↓

Common Green Darner

The green darner or common green darner (Anax junius), after its resemblance to a darning-needle, is a species of dragonfly in the family Aeshnidae. One of the most common and abundant species throughout North America, it also ranges south to Panama. It is well known for its great migration distance from the northern United States south into Texas and Mexico. It also occurs in ...more ↓

Autumn Meadowhawk

Sympetrum vicinum, the yellow-legged meadowhawk or autumn meadowhawk, is a member of the Libellulidae family and grows to 26–35 mm long.

Twelve-spotted Skimmer

The twelve-spotted skimmer (Libellula pulchella) is a common North American skimmer dragonfly, found in southern Canada and in all 48 of the contiguous U.S. states.

Ebony Jewelwing

The ebony jewelwing (Calopteryx maculata) is a species of broad-winged damselfly. It is one of about 170 species of Odonata, found in the eastern U.S. and southeastern Canada, ranging west to the Great Plains. Other common names include black-winged damselfly.

Common Whitetail

The common whitetail or long-tailed skimmer (Plathemis lydia) is a common dragonfly across much of North America, with a striking and unusual appearance. The male's chunky white body (about 5 cm or 2 inches long), combined with the brownish-black bands on its otherwise translucent wings, give it a checkered look. Females have a brown body and a different pattern of wing ...more ↓

Common Baskettail

The common baskettail (Epitheca cynosura) is a dragonfly of the Corduliidae family. The thorax is brown and hairy. Some specimens have a triangular spot at the base of the hindwing. Individuals are difficult to distinguish from the other species in this genus. The caudal appendages (structures at the tip of the abdomen) differ between the species and can be compared with known ...more ↓

Fragile Forktail

Ischnura posita, the fragile forktail, is a species of damselfly in the genus Ischnura. It is 21 to 29 mm long. It is native to most all of eastern North America.

Blue Corporal

The blue corporal (Ladona deplanata), also known as little corporal, is a dragonfly in the Libellulidae, or skimmer family. First described as Libellula deplanata by Jules Pierre Rambur in 1842, it is common across much of the eastern United States.

Slaty Skimmer

Libellula incesta, the slaty skimmer, is a dragonfly of the skimmer family, native to eastern United States and southern Ontario, Quebec, and New Brunswick. Adults are 5.28 cm (2.08 in) long. Mature males are dark blue with black heads. Females and juveniles have brown abdomens with a darker stripe down their backs. Adults fly from June to August.

Great Blue Skimmer

The great blue skimmer (Libellula vibrans) is a dragonfly of the skimmer family. With a total length of 50 to 63 mm, it is one of the largest skimmers. The immature forms of the skimmer are brown in color and mature forms are blue-hued. This species is found near lakes, ponds, and slow streams in the eastern United States and rarely in southern Ontario.

Edited by Max J. Ford, some rights reserved (CC BY-SA)