Dobson Fly Nymph or Toe-biter | New Zealand Trout Food
/The Dobson fly (Archichauliodes diversus )or Toebiter nymph has become a very important fly pattern in my fly box early come early season. This large predatory native insect is found through out New Zealand's more hard bottomed , stony rivers and streams and can be found in their larger bouldery sections. Dobson fly larvae are typically 25-38mm mm long and have a black, flattened thorax and head. The head has a large set of serrated mandibles that it uses to catch other aquatic invertebrates which may include most species of mayfly, caddis and each other ! It has 8 tentacle like gills on each side of it's abdomen and 2 hook like legs near it's tail which it uses to attach itself to rocks etc.
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