After Crandall, 1995-1999 [“The Tree of Life Project”]

<==o Parastacidae Huxley, 1879
   |--+-- Tenuibranchiurus glypt
   |  `--+--o Engaewa
   |     |  |-- E. subcoerulea 
   |     |  |-- E. reducta 
   |     |  `-- E. similis 
   |     `--+-- Engaeus
   |        `--o Parastacus Huxley 1879
   |           |-- P. brasiliensis
   |           |-- P. defossus
   |           |-- P. laevigatus
   |           |-- P. nicoleti
   |           |-- P. pilimanus
   |           |-- P. pugnax
   |           |-- P. saffordi
   |           `-- P. varicosus
   `--+--+-- Euastacus
      |  `--+-- Astacopsis
      |     `-- Astacoides
      `--+--+-- Cherax
         |  `--+-- Paranephrops
         |     `-- Parastacoides
         `--+--+-- Geocherax
            |  `-- Gramastacus
            `--+-- Samastacus
               `-- Virilastacus

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