Curculioninae
Guides
Cionini
Cionini is a tribe of weevils (Curculionidae: Curculioninae) distributed across the Palaearctic region. The tribe includes at least two well-studied genera, Cionus and Stereonychus, with 61 species currently recognized in Cionus alone. Larvae of this tribe exhibit distinctive morphological features that distinguish them from related groups, including reduced numbers of cranial and epipharyngeal setae, one-segmented labial palpi, absent labral rods, and swollen pedal lobes. Members are primarily associated with plants in the family Scrophulariaceae.
Curculionini
Curculionini is a tribe of weevils within the subfamily Curculioninae, family Curculionidae. Members of this tribe are characterized by their elongated rostrum and association with nut-bearing trees, particularly oaks. The tribe includes economically significant pests such as acorn weevils in the genus Curculio. Larval development occurs within seeds or nuts of host plants.
Derelomini
Palm Flower Weevils
Derelomini is a tribe of flower weevils (Curculionidae: Curculioninae) commonly known as palm flower weevils. Members are associated with reproductive structures of plants, particularly inflorescences. The tribe includes genera with specialized brood pollination mutualisms with palms (Arecaceae) and other monocots, as well as genera associated with dicotyledonous plants. Genera include Derelomus, Elaeidobius, Hypoleschus, Notolomus, Phyllotrox, and several recently described genera including Ebenacobius, Cyclanthura, Ganglionus, and Staminodeus.
Erodiscini
Erodiscini is a tribe of weevils within the subfamily Curculioninae (Curculionidae), containing semi-aquatic species such as Ludovix fasciatus. The tribe includes the genus Sicoderus, which is diverse in the West Indies with over 75 described species. At least some members exhibit specialized surface swimming behavior using all three pairs of legs in a coordinated breast stroke-like motion.
Mecinini
Mecinini is a tribe of true weevils (Curculionidae: Curculioninae) comprising six genera: Cleopomiarus, Gymnetron, Mecinus, Miarus, Rhinumiarus, and Rhinusa. The tribe is distributed across the Palaearctic, Afrotropical, and Neotropical regions, with most diversity in the Palaearctic. Species are specialized herbivores, primarily associated with Campanulaceae, Scrophulariaceae, and Plantaginaceae. Several species have been introduced to North America as biological control agents for invasive toadflax (Linaria spp.).
Sicoderus
Sicoderus is a genus of true weevils (Curculionidae) established by Vanin in 1986. The genus contains more than 75 described species globally, with substantial diversity in the West Indies where 32 species have been documented. Most species are small, dark-colored weevils with characteristic rostrum morphology typical of the tribe Erodiscini.
Styphlini
Styphlini is a tribe of weevils within the family Curculionidae, subfamily Curculioninae. The tribe includes genera such as Styphlus and Orthochaetes. Species within this tribe show Palearctic affinities, with some taxa documented from the eastern Mediterranean, southern France, Mallorca, and more recently from North America as introduced or expanding populations.
Tychius tectus
leguminous seed weevil
Tychius tectus is a species of leguminous seed weevil in the family Curculionidae, first described by LeConte in 1876 from North America. The species has been recorded from both North America and China, representing a transcontinental distribution pattern within the Holarctic region. As a member of the genus Tychius, it belongs to a group of weevils specialized on leguminous plants (Fabaceae). No specific biological or ecological studies have been published for this species.