curve

Lethocerus

fish
inverts
   arthropods
     bloodworms
     damselfly
     dragonfly
     giant water bug
       Lethocerus
     glassworm
     gnat
     water scorpion
     water spider
   bacteria
   cnidaria
   colonial
   crustacea
   gastropods
   molluscs
   protists
   worms
plants
misc

Lethocerus

Ode

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