Gomphidae
Shorter Broader abdomen
Four segmented antennae
Found riffles or partially buried
Ponds Littoral
Gomphidae
Concealed to ambush prey
Two-to-four years
May diapause
Corduliidae
Larvae are short and broad
Spoon-shaped prementum
scalloped Palpal lobes
Lentic
two-to-four years
Corduliidae
Cool ponds
Flight May early July
Aquatic Heteroptera (true bug)
Aquatic and semiaquatic
Primarily terrestrial
Lentic fly over winter
Gerromopha
Adults and Nymphs
Walk on water surface
Nerpomorrha (Six Families)
The beak that helps take in biofilm
Depress mosquito larvae
Fish rearing ponds
Gerromorpha
Reach peak
September to October
Species overwinter as egg die
Gerroporpha
Have
-Femora Trochanters
Detective vibration in water to find prey
Hydrofuge hairs tarsi walking on water
Coenagrionidae
Short basal antennal
Prementum Narrowed
Lentic: Marsh and pond
They ambush to stalk prey
Univoltine diapause over winter
Petaluridae
High elevation bog seepages
Flat Prementum
Six seven segmented
Cold habitat Six years of Larval
Petaluridae
Cold habitat
Six years of larval
Macromiidae
Broad abdomens
Long legs
Deris
Medium-to-large streams
Two years
Lidellulidae
Similar Corduliidae
Ponds and march
Two-year larvae
Aeshnidae
Elongated tapered abdomens
Lentic habitats
Pond and marches
Stalk prey invertebrates and vertebrates
Six-or-seven segmented
Mesoveliidae
Adult water Treaders
Abundant late Summer
Lentic habitats
Mesoveliidae
Black spines
Killed by freezing temps
Probably Multivoltine
Veliidae
Broad-shouldered
Short-legged
Aquatic habitats
Gerridae smaller size
Multivoltine
Gerridae
Largest semiaquatic Heteroptera
Distinguished: Preapical tarsal claw
Metfermora past tip of the abdomen
Univoltine and Biovoltine
Herdidae
Confused w/ Velids small size
Nymphs: rostral sulcus
Shallow water
Hydrometridae
Delicate sticklike
Marcoputerus and branchypterous
Pond and marsh
Lestidae
Thin larvae
Parallel-sided
Caudal lamellae
Elongated basally
Aeshnidae
Pond and marches
Stalk prey invertebrates and vertebrates
Six-or-seven segmented