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A genus of bristletail comprising one species in the British Isles, thought to be confined to the coast and caves of South Devon, though may be overlooked elsewhere
The genus is fairly easily distinguished (albeit with a hand lens) by the ocelli which are vertical oval slits close together underneath the area where the large compound eyes join. Quite different from the wide horizontal "bow-ties" of the petrobius genus and the widely seperated triangular ocelli of dilta species.
|Latin Name||Synonyms||English Name|
|Trigoniophthalmus Alternatus,Silvestri, 1904||t. britannicus , t. interupptus|