order
![](/images/illustrations/illustration_coleoptera_adult_v_160.png)
Coleoptera
“Adult Beetles”
![](/images/illustrations/illustration_coleoptera_larva_v_160.png)
Coleoptera
“Larval Beetles”
![](/images/illustrations/illustration_diptera_larva_v_160.png)
Diptera
“True Flies”
![](/images/illustrations/illustration_ephemeroptera_larva_v_160.png)
Ephemeroptera
“Mayflies”
![](/images/illustrations/illustration_hemiptera_adult_v_160.png)
Hemiptera
“True Bugs”
![](/images/illustrations/illustration_lepidoptera_larva_v_160.png)
Lepidoptera
“Aquatic Caterpillars, Snout Moths”
![](/images/illustrations/illustration_megaloptera_larva_v_160.png)
Megaloptera
“Alderflies, Dobsonflies, and Fishflies”
![](/images/illustrations/illustration_odonata_larva_v_160.png)
Odonata
“Dragonflies and Damselflies”
![](/images/illustrations/illustration_plecoptera_larva_v_160.png)
Plecoptera
“Stoneflies”
![](/images/illustrations/illustration_trichoptera_larva_v_160.png)
Trichoptera
“Caddisflies”
family
Corixidae
genus
Hesperocorixa
“Water Boatmen”
Genus Overview
19 species in North America.
Characteristics
POLLUTION TOLERANCE
No pollution tolerance ranges defined.
FEEDING HABITS
Piercer / Herbivore
MOVEMENT
Climber
Swimmer
Swimmer
DISTRIBUTION
Widespread (east of the Rocky Mtns.)
HABITAT
Lotic-depositional
Diagnostic Characters
order
![](https://static.macroinvertebrates.org/gigapans/199865/images.fd38abe4a426e2097e37cec591756cc6/199865-120x120-5230-9941-3118-7829.jpg)
Hemelytra
![](https://static.macroinvertebrates.org/gigapans/199865/images.fd38abe4a426e2097e37cec591756cc6/199865-120x120-546-4809-3324-7588.jpg)
Needle-like Beak
family
![](https://static.macroinvertebrates.org/gigapans/199865/images.fd38abe4a426e2097e37cec591756cc6/199865-120x120-1214-4722-3731-7238.jpg)
Antennae Shorter than Head
![](https://static.macroinvertebrates.org/gigapans/199865/images.fd38abe4a426e2097e37cec591756cc6/199865-120x120-2553-5301-2339-5087.jpg)
Scoop-like Front Tarsi
![](https://static.macroinvertebrates.org/gigapans/199865/images.fd38abe4a426e2097e37cec591756cc6/199865-120x120-546-4809-3324-7588.jpg)
Short, Triangular Beak
+ Expanded Character List
Order:
Adults: With or without wings. If wings present, forewings typically leathery or hard basally and translucent and flexible apically. Nymphs: With or without wing pads. Segmented legs present. Mandibles hidden within needle-like beak in adults and nymphs.
Family:
Generally smaller bugs, nearly parallel-sided in dorsal view, slightly convex dorsally. Rostrum (beak) uniquely triangular (not extended as slender needle). Antennae shorter than head and hidden in dorsal view.
Genus:
mature specimen usually longer than 5.9 mm, eyes not protuberant, rostrum with transverse striations
![](https://static.macroinvertebrates.org/gigapans/199865/images.fd38abe4a426e2097e37cec591756cc6/199865-318x240.jpg)
Dorsal