Twig-beetle
Guides
Hypoborini
Hypoborini is a tribe of small bark beetles (Curculionidae: Scolytinae) established by Nüsslin in 1912. Recent molecular and morphological revision of the Afrotropical fauna revealed substantial undescribed diversity, including three new genera and seven new species. The tribe comprises two subtribes in the Afrotropical region: Xerasiborina (Xerasiborus, Nisiborus, tentatively Glochiphorus) and Hypoborina (Dacryostactus, Styracoptinus, Afrotrypetus, Corditarsus). Related Palearctic genera Hypoborus and Liparthrum occur in Mediterranean and Macaronesian regions. Phylogenetic analyses indicate an early Palaeocene origin with ancestral area split between Asia/Africa and Madagascar, followed by single colonization of Madagascar and subsequent recolonization of the African mainland.
Pityophthorus annectens
Pityophthorus annectens is a bark beetle species in the family Curculionidae, first described by LeConte in 1878. It is a member of the genus Pityophthorus, a large group of small bark beetles commonly known as twig beetles. The species has been documented in North America and Middle America. Specific ecological details regarding its host associations and biology remain poorly documented in the available literature.
Pityophthorus puberulus
A twig beetle in the subfamily Scolytinae, Pityophthorus puberulus is commonly associated with eastern white pine (Pinus strobus) in seed orchards. Field studies indicate it responds to the pheromone pityol, with attraction enhanced by the monoterpenes (-)-α-pinene and (-)-β-pinene. Its attraction is inhibited by S-(-)-limonene, suggesting this compound may function in host recognition and suitability assessment. The species has been documented as a bycatch in trapping programs targeting the white pine cone beetle, Conophthorus coniperda.
Pityophthorus setosus
Pityophthorus setosus is a species of bark beetle in the weevil family Curculionidae, described by Blackman in 1928. It belongs to the genus Pityophthorus, a group of small ambrosia and bark beetles commonly known as twig beetles. Very little specific biological or ecological information is available for this species in the provided sources. The genus Pityophthorus includes species that are associated with coniferous and hardwood trees, with some members known as significant forest pests.