Illustrated keys to females and males of the European genera and subgenera of Mymaridae (Chalcidoidea) are presented, including twenty-four genera plus two subgenera in both of Erythmelus Enock and Polynema Haliday. The key to females also includes three subgenera recognized in Anagrus Haliday, two subgenera in Anaphes Haliday, and two species groups in Anagrus s.s.; males of these either cannot be distinguished or are difficult to key. The species of Mymaridae recorded from the Czech Republic are listed and distribution records are provided based on material in three collections. Seven genera (Anagrus, Caraphractus Walker, Dicopus Enock, Macrocamptoptera Girault, Omyomymar Schauff, Pseudocleruchus Donev Huber, Stethynium Enock) and 12 species are newly recorded for the country.

• MeSH
• Hymenoptera * MeSH
• zvířata MeSH
• Check Tag
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Česká republika MeSH

The number of parasitoids developed per host is one of the major factors that influences future adult body size and reproductive success. Here, we examined four external factors (host species, heritability, host population density, and presence of predators) that can affect the number of the gregarious parasitoid Anaphes flavipes (Förster, 1841) (Hymenoptera: Mymaridae) wasps developing in one host. The effect of host population density on the number of parasitoid offspring developed per host was confirmed, and for the first time, we also showed that the number of offspring per host is influenced by the presence of predators. Low host density and presence of predators increases the number of wasps developed in one host egg. However, a higher number of A. flavipes in one host reduces A. flavipes body size and hence its future individual fertility and fitness. Our results highlighted the importance of some external factors that distinctly affect the number of wasp offspring. Therefore, in this context, we suggest that in comparison to solitary parasitoids, the gregarious parasitoid A. flavipes can better respond to various external factors and can more flexibly change its population density.

• MeSH
• brouci parazitologie   MeSH
• fertilita MeSH
• hostitelská specificita MeSH
• hustota populace MeSH
• interakce hostitele a parazita * MeSH
• rozmnožování MeSH
• sršňovití růst a vývoj   MeSH
• velikost těla MeSH
• zvířata MeSH
• Check Tag
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH