Orchid-pollination
Guides
Cryptorhynchinae
hidden-snout weevils
Cryptorhynchinae is a large subfamily of weevils (Curculionidae) comprising approximately 6,000 species. The subfamily is distinguished by a rostrum that folds backward between the fore coxae in repose, fitting within a protective channel on the mesoventrite. Molecular evidence supports its monophyly as an independent subfamily rather than inclusion within Molytinae. The group is most diverse in the Neotropics, Australia, and Oceania, with an evolutionary origin in the Late Cretaceous of South America.
Lachnopus
Lachnopus is a genus of broad-nosed weevils (Curculionidae: Entiminae: Geonemini) comprising 73 described species, making it the most diverse and widespread entimine weevil genus in the Caribbean Region. The genus was established by Schönherr in 1840 and has experienced unstable taxonomic placement, having been assigned to Cyphides, Barynotini, and currently Geonemini. Its validity as a distinct genus from Exophthalmus was confirmed by Franz (2012). Girón et al. (2018) recognized six species groups within the genus based on morphological phylogenetic analysis.
Megachile melanophaea
Black-and-gray Leafcutter Bee
Megachile melanophaea is a solitary leafcutter bee native to North America, first described by Frederick Smith in 1853. Females construct nests in ground holes or small cavities, lining individual cells with carefully cut leaf pieces and provisioning them with pollen and nectar. This species has been documented as a pollinator of slipper orchids (Cypripedium species), including the rare Cypripedium macranthos var. rebunense, which is otherwise pollinated almost exclusively by queen bumble bees. The species is parasitized by cuckoo bees Coelioxys sodalis and Coelioxys rufitarsus.
Orfelia
fungus gnats
Orfelia is a cosmopolitan genus of fungus gnats in the family Keroplatidae, comprising approximately 46 described species. The genus is notable for containing Orfelia fultoni, whose larvae produce the bluest bioluminescence (~460 nm) known among insects via a novel luciferin-luciferase system involving keroplatin. Species occur across multiple continents including Europe, Asia, and North America. In Australia, members of this genus serve as important pollinators of native greenhood orchids through pseudocopulation.
Ptilodactylidae
Toe-winged Beetles
Ptilodactylidae is a family of approximately 500 extant species in 35 genera, commonly known as toe-winged beetles. The family belongs to the superfamily Dryopoidea within Elateriformia. Members are primarily associated with riparian and aquatic habitats, with larvae typically found in rotting wood, vegetation, or gravel and detritus at water margins. The family has a significant but underappreciated fossil record, including specimens preserved in Baltic, Dominican, Mexican, and Rovno amber dating from the Cretaceous through Eocene.
Thynnidae
thynnid wasps, flower wasps, thynnid flower wasps
Thynnidae is a family of solitary wasps formerly classified within Tiphiidae but now recognized as a distinct lineage based on molecular and morphological studies. Adults feed on nectar and function as minor pollinators, with some species involved in specialized pollination systems including orchid sexual deception. Larvae are parasitoids, primarily attacking scarab beetle larvae (Scarabaeoidea), though some species parasitize tiger beetle larvae (Cicindelinae) and other hosts including bees and ants. The family exhibits extreme sexual dimorphism: in many subfamilies, females are wingless and fossorial while males are winged and aerial.