This, the seventh update, includes sections on new ideas and discoveries, dinosaurs and birds, systematics, and extinctions, as well as the complete reference section by current genus name with information on synonyms and nomina dubia
. His writing is a model of clarity, and summarizes current research on each species.
We have now reassessed the situation during preparation of the chapter on Cecidomyiidae for the forthcoming Manual of Afrotropical Diptera and have decided that most of these genera and species named by Kieffer, which have remained unrecognised for almost a century, are unlikely to be recognised with any degree of certainty now or in the future and are best treated as nomina dubia
The total number of described names incorporates synonyms, nomina dubia
, nomina nuda, and incorrectly assigned material.
They regarded the remainder of historically defined form s as synonyms of the 5 they recognized, as nomina oblita, nomina dubia
, nomina nuda, inorganic or assignable to alternative ichnogenera (Pemberton and Frey 1982, pp.
leleupi Cooreman 1977 from Ecuador were each based on juveniles and were therefore considered nomina dubia
by Platnick & Shadab (1981) and Platnick & Paz (1979), respectively.