Anophthalmous
Guides
Cossoninae
Cossoninae is a subfamily of true weevils within the family Curculionidae. Members of this subfamily are characterized by their small to medium size and association with woody substrates, including timber, leaf litter, and plant roots. The group exhibits considerable diversity in habitat preference, with species found in marine/coastal environments, forest leaf litter, and specialized niches such as sand dunes and the phloem of living trees. Many species possess reduced or absent eyes (anophthalmous or microphthalmous) and exhibit endogean or cryptic lifestyles. The subfamily includes both economically significant timber pests and ecologically important decomposers.
Onycholipini
Onycholipini is a tribe of weevils in the subfamily Cossoninae, established by Alonso-Zarazaga and Lyal in 1999. The tribe includes at least four genera—Dipnotyphlus, Hauseriola, Leipommata, and Onycholips—plus Halorhynchus, which was transferred from Pentarthrini. Members are specialized for fossorial and psammophilous (sand-dwelling) lifestyles, with adaptations including reduced or absent eyes, compact body form, and modified legs for burrowing. The tribe has a disjunct distribution across coastal regions of the Mediterranean, Macaronesia, Arabia, and Australasia, with some species exhibiting transoceanic dispersal capabilities.