Siphonini
Guides
Actia
Actia is a genus of tachinid flies (Diptera: Tachinidae) in the tribe Siphonini. These flies are parasitoids of lepidopteran larvae, with species recorded from hosts including spruce budworm, black-headed budworm, and various noctuid moths. The genus contains at least eight Nearctic species, including four described relatively recently (A. dasymyia, A. dimorpha, A. radialis, A. sternalis). Species are grouped into three species groups based on morphological and phylogenetic affinities: autumnalis-group, lamia-group, and crassicornis-group.
Ceromya
Ceromya is a genus of tachinid flies in the family Tachinidae, tribe Siphonini. The genus contains approximately 60 described species distributed across multiple continents. Nine species are recognized in the Nearctic region, organized into three species groups with distinct biogeographic patterns: the bicolor group (Holarctic), flaviseta group (European-Nearctic), and americana group (Neotropical-Nearctic). The genus was established by Robineau-Desvoidy in 1830.