Calopteryx, with 5 North American species, is the most common and widespread genus in the Calopterygidae. Members of this genus live along the margins of lotic-erosional and depositional habitats, in areas of moderate or slower flow, where they climb slowly on plants or detritus. Like other members of the Odonata, they are engulfing predators.
Southeast: up to 8.3
Upper Midwest: up to 5
Midwest: up to 3.7
Mid-Atlantic: up to 6
Engulfer / Predator
Widespread (east of the Rocky Mtns.)
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Order: Nymph with mask-like labium below chewing mouthparts. Wings developing in wing pads. Segmented legs present, each with two claws.
Family: Suborder Zygoptera (i.e., damselflies: as shown by slender body shape, head wider than thorax and abdomen; 3 long feather-like gills present at posterior end of abdomen). First antennal segment long, each subequal to length of rest of its antenna. Labial mask with deep, open, diamond-shaped, median cleft at apex. Lateral gills at posterior end of abdomen triangular in cross section.
Genus: Labial mask with cleft reaching nearly halfway to base. Abdominal segments 9 and 10 without spines on posterolateral margins. Lateral caudal gills flat, not conspicuously triangular in cross-section.