Hi all. Attached is a plate of some Sciaroidea/Bibionomorpha wings with my attempt to map and understand the newer terminologies suggested by Blagoderov & Grimaldi (2004) and Saigusa (2006/unpublished). This is just my preliminary ideas shared with you - where the new interpretation of M4 also ought to have consequences for the interpretation of the ta – tb concept (like used by Chandler 2002) in relation to m-cu. As you can see I have material of some interesting outgroup taxa like Sciaropota and Catotrichia from Japan.
Revision of the Nearctic species of Ditomyia Winnertz and a new species from the Neotropical Region (Diptera: Ditomyiidae)