Key: Step 35. Tanypodinae 21 Macropelopia

35a. Thoracic horn truncate apically, with the plastron plate as wide, or nearly as wide, as the maximum width of the horn; attached for its full width to the atrium (010d.jpg).

Macropelopia fittkaui

35b. At its maximum development the plastron plate is circular, lying in the rounded horn apex, unattached to the atrium, but it is often reduced and may be missing altogether (010f.jpg).

Macropelopia fehlmanni
Decision path