|scientific name Dytiscus hybridus |
Permanent, mature ponds and marshes (Larson et al. 2000). Associated with aquatic macrophytes.
Adults emerge from July to September.
Medium size (24.2 to 28.1 mm), elongate body (Larson et al. 2000). Dark brown or black - some with green appearance. Small chevron between eyes. Basal antennal segments yellow, progressively darker toward tips. Pronotum with basal margin narrowly yellow or brown-black, anterior margin narrowly yellow and lateral margins broadly yellow. Yellow prosternum and prothorax, remainder of ventral surface dark red or brown-black. Forelegs yellow, femur of middle legs yellow to brown-black, hind legs brown-black.
Overwinter as adults in water or on land (Larson et al. 2000). Late fall or early spring mating. Univoltine (Aiken and Wilkinson 1985). Strong swimmers, hind legs move together while swimming. Adults attracted to lights.
No special status (IUCN 2002).
Predatory - active swimmers (Larson et al. 2000). Invertebrate and fish larvae prey.
Southern Alberta to southern Quebec, as far south as North Carolina and Nebraska (Larson et al. 2000). Some records from Oregon, Wyoming and Colorado.
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