Primitive-weevils
Guides
Attelabidae
Leaf-rolling Weevils, Giraffe Weevils
Attelabidae is a widespread family of primitive weevils characterized by straight antennae inserted near the base of the rostrum. The family includes approximately 2,500 species globally, with subfamilies exhibiting distinct reproductive behaviors. Attelabinae are true leaf rollers, where females cut and roll leaves to create cradles for egg deposition and larval development. Rhynchitinae (sometimes treated as a separate family) have larvae that develop in flower buds, fruits, terminal shoots, or as leaf miners. Some members, particularly in the genus Trachelophorus, possess elongated necks and are known as giraffe weevils.
Belidae
Primitive Weevils, Belids, Cycad Weevils (restricted usage)
Belidae is an ancient family of weevils distinguished from true weevils (Curculionidae) by straight rather than elbowed antennae. The family exhibits a relictual Gondwanan distribution, with extant species found primarily in the Australia–New Guinea–New Zealand region, South and Central America, Southeast Asia, Pacific islands, and scattered African localities. Belidae comprises two living subfamilies: Belinae and Oxycoryninae. The family has undergone significant host-plant shifts from ancestral conifer associations to diverse angiosperm lineages, including cycads, palms, and parasitic flowering plants.
Brentidae
straight-snouted weevils, primitive weevils
Brentidae is a cosmopolitan family of weevils distinguished by their straight (non-elbowed) antennae and elongated, often flattened bodies. The family has undergone significant taxonomic expansion, now encompassing approximately 4,000 species across six subfamilies including groups formerly classified in Curculionidae (Apioninae, Cyladinae, Nanophyinae) and the previously separate family Ithycerinae. Members are primarily xylophagous, with larvae feeding on fungi in dead wood. The family exhibits its greatest diversity in tropical regions but extends into temperate zones worldwide.
Brentinae
straight-snouted weevils, primitive weevils
Brentinae is a subfamily of primitive weevils in the family Brentidae, commonly called straight-snouted weevils. Members are distinguished from true weevils (Curculionidae) by their straight, elongated rostrum rather than a geniculate (elbowed) snout. The subfamily contains at least 90 genera and 520 described species, with extreme sexual dimorphism in rostrum and mandible structure observed in some species. The type genus Brentus was used by Gustaf Johan Billberg to establish both the subfamily and family in 1820.
Pityomacer
Pityomacer is a genus of weevils in the family Nemonychidae, a small family of primitive weevils. The genus was established by Kuschel in 1989 and contains species associated with coniferous hosts. Members of this genus are part of the relictual lineage of Nemonychidae, which represents one of the earliest diverging lineages of weevils. The genus is poorly documented in public sources, with minimal observational records available.
Stereodermus
Stereodermus is a genus of primitive weevils in the family Brentidae, comprising more than 40 described species. The genus occurs in both the Neotropical and Oriental regions, with substantial diversity in Central and South America. Species are characterized by elongated, cylindrical bodies typical of brentid weevils. Taxonomic work has focused heavily on the Neotropical fauna, with recent revisions describing new species and resolving synonymies.
Trachelizini
primitive weevils
Trachelizini is a tribe of primitive weevils within the family Brentidae, subfamily Brentinae. The tribe contains at least 100 genera organized into nine recognized subtribes, with two additional genera currently unplaced. Members are characterized by elongated, slender body forms typical of brentid weevils. The tribe has been subject to significant taxonomic revision, with subtribal classifications established by multiple authors from 1865 to 1999.