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Language: English with bilingual summary in English and French
The genus Microchrysa (Diptera: Stratiomyidae) from the Afrotropical Region is taxonomically revised. Three subgenera: Microchrysa (Michrochrysa) Loew, Microchrysa (Psaroninus) Enderlein, and Microchrysa (Chrymicrosa) subg.nov. and nineteen species are recognized.
Microchrysa loewi Lindner, 1938 is resurrected from synonymy with M. scutellaris Loew; lectotype and paralectotype are designated. Microchrysa loewi Lindner, 1939 (nec M. loewi Lindner 1938), is synonymized with M. circumscripta Loew.
Microchrysa radiata Lindner is resurrected from synonymy with Microchrysa (Psaroninus) viridis Enderlein and synonymized with M. circumscripta Loew. Microchrysa deannulata, M. annulipes Lindner and M. illucens Lindner are synonymized with Microchrysa (Psaroninus) viridis Enderlein. M. rhodesiensis Lindner is synonymized with M. ghesquierei Lindner. Microchrysa ruwenzoriensis Lindner, 1939 (nec M. ruwenzoriensis Lindner, 1938), is synonymized with M. congoensis Lindner.
Lectoptypes are designated for M. ghesquierei Lindner, M. matengoensis Lindner and Microchrysa (Chrymicrosa) elmari. Lectotypes are designated for the synonymized species: Microchrysa loewi Lindner, 1939, M. ruwenzoriensis Lindner, 1939 and M. deannulata Lindner, 1935. Microchrysa subgenus Psaroninus Enderlein is a new status and Microchrysa (Chrymicrosa) is a new subgenus.
The new combination Parasargus stigmaticus (Enderlein) is formed.
Seven new species are described: M. alessandrinorum, M. daccordii, M. deconinckae, M. rozkosnyi, M. ruffoi, M. stuckenbergi, and Microchrysa (Psaroninus) woodleyi.
Microchrysa (Parasargus) albimana Lindner, is synonymized with Chrysonotus calopus Bigot, and Parasargus africanus Lindner, is synonymized with Parasargus stigmaticus (Enderlein).
Keys to all taxa, diagnoses for subgenera and species and descriptions of each species are presented. Male and female genitalia are illustrated for the first time, and maps of distribution are included.Biological notes are presented for each species based on information in the literature and on specimen labels.
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