Dictya Dictya pictipes Dictya expansa Dictya sabroskyi Dictya atlantica Chromodoris dictya Emarginula dictya Dictya umbrarum George C. Steyskal Tetanocerini Sciomyzinae Diptera in the 10th edition of Systema Naturae Britomartis Emarginula Sciomyzidae Oestrophasia uncana Chromodoris List of Diptera of Ireland List of trilobite genera Otites formosa