Planidial-larvae
Guides
Rhinophoridae
Woodlouse Flies
Rhinophoridae is a small family of calyptrate flies (Diptera) comprising 33 genera and approximately 177 species. The family is distinguished by a highly specialized life history: larvae are obligate parasitoids of terrestrial isopods (woodlice), a feeding strategy unique among all insects. Adults lack morphological autapomorphies and are difficult to identify without examination of male terminalia or first-instar larvae. The group was historically considered primarily Palaearctic in distribution, but recent sampling has revealed substantial diversity in tropical and southern hemisphere regions.
Rhipiceridae
Cicada-Parasite Beetles
Rhipiceridae is a family of beetles specialized as parasitoids of cicada nymphs. Larvae exhibit hypermetamorphosis, with mobile planidial first instars that actively locate and penetrate underground cicada nymphs, developing as endoparasitoids until host death. Adults display pronounced sexual dimorphism: males possess large flabellate antennae with approximately 30,000 sensilla placodea for detecting chemical cues, while females have compact bodies with simple antennae bearing around 100 sensilla. The family comprises seven genera and approximately 100 described species divided into two subfamilies: Rhipicerinae (Australia, New Caledonia, Chile) and Sandalinae (Americas, Africa, Europe, Asia).