Genus Condylostylus

Full title: The Australian Sciapodinae (Diptera: Dolichopodidae), with a review of the Oriental and Australasian faunas, and a world conspectus of the subfamily

This 394 page paper revises the genus-level classification of Sciapodinae worldwide.

It is available free on the Australian Museum web site.

Online at AMNH

Abstract:
"A catalog of the American species of Dolichopodidae north of Mexico is provided. Fifty-five valid genera and 1288 valid species and 3 subspecies in 14 subfamilies are listed. [...] For each genus, the species list is preceded by notes on its distribution, biology, and ecology as well as a list of pertinent keys and revisions, when such information is available. For each valid species name, the list includes the author, year of publication, page number of original description, type depository and locality, and distribution in North America by state or province and occurrence in other realms, as well as taxonomic notes wherever applicable. Additional distribution records from the literature have been added. [...] Statistics and comments on the history of North American dolichopodid research are presented. The diversity and distribution of Nearctic Dolichopodidae and their relationships with the fauna of other realms is tabulated and discussed."

Genera Insectorum fasc. 185 contains Melander's revision of Empididae.

It is available in the Biodiversity Heritage Library collection as the second half of the 184+185 pair.

Available on NHBS (UK): https://www.nhbs.com/diptera-an-introduction-to-flies-book
Diptera: An Introduction to Flies is easy to read and gives a general introduction to this order of amazing insects.
The book was first published in Russian in 2019. the current English version was substantially extended and revised by the author and editors.
160 pages, 250 colour photos, hardback