Seed-weevil
Guides
Sibinia setosa
leguminous seed weevil
Sibinia setosa is a species of weevil in the family Curculionidae, described by Clark in 1978. It belongs to the genus Sibinia, commonly known as leguminous seed weevils. The species is recorded from North America. As a member of Curculionidae, it possesses the characteristic elongated rostrum typical of weevils.
Sibinia transversa
Sibinia transversa is a small weevil species in the family Curculionidae, described by Clark in 1978. It belongs to the genus Sibinia, a group of seed weevils within the snout beetle family. The species is recorded from North America, excluding Mexico, though detailed ecological and biological information remains limited in available literature.
Sibinia variegata
leguminous seed weevil
Sibinia variegata is a species of leguminous seed weevil in the beetle family Curculionidae, described by Clark in 1978. It is found in North America and belongs to a genus associated with feeding on legume seeds.
Smicronyx
seed weevils, sunflower seed weevils
Smicronyx is a large genus of true weevils (Curculionidae) containing over 220 described species distributed worldwide. Many species are specialized seed feeders, with several economically important members attacking cultivated sunflowers (Helianthus annuus) in North America. The genus includes gall-forming species and potential biological control agents for parasitic and invasive weeds. Larval development typically occurs within seeds or plant galls, with adults emerging to feed on pollen, buds, or foliage.
Smicronyx albonotatus
Smicronyx albonotatus is a species of true weevil in the beetle family Curculionidae. It was described by Anderson in 1962. The species is known from North America. As a member of the genus Smicronyx, it belongs to a group of seed weevils associated with plants in the sunflower family (Asteraceae), though specific host associations for this species remain undocumented.
Smicronyx amoenus
Smicronyx amoenus is a species of true weevil in the beetle family Curculionidae, first described by Thomas Say in 1832. It is native to North America, with confirmed records from Canada (Manitoba, Saskatchewan) and the United States. Like other members of the genus Smicronyx, this species is associated with sunflower plants (Helianthus spp.), where adults feed on pollen and developing seeds. The larvae develop within sunflower seeds, making this and related species economically significant as pests of commercial sunflower cultivation.
Smicronyx centralis
Smicronyx centralis is a species of true weevil in the family Curculionidae, described by Anderson in 1962. It is known from North America, with confirmed records from the Canadian provinces of Alberta and Saskatchewan. Like other members of the genus Smicronyx, it is likely associated with sunflower plants (Helianthus spp.), though specific ecological details for this species remain poorly documented. The genus includes economically important seed weevils that are pests of cultivated sunflower crops.
Smicronyx compar
Smicronyx compar is a seed weevil in the family Curculionidae, described by Anderson in 1962. It belongs to a genus of small weevils associated with sunflower and other composite plant seeds. The species has been recorded in North America. Like other Smicronyx species, it likely develops within seeds of host plants, with larvae feeding internally on developing kernels.
Smicronyx constrictus
Smicronyx constrictus is a species of true weevil in the family Curculionidae, native to North America. The genus Smicronyx contains seed weevils associated with plants in the Asteraceae family, including sunflowers. Specific ecological details for S. constrictus are poorly documented in available sources, though congeners are known as seed-feeding pests of cultivated sunflowers.
Smicronyx corniculatus
Smicronyx corniculatus is a species of true weevil in the family Curculionidae. It is native to North America, with records from Canada (New Brunswick, Ontario, Québec). Like other members of the genus Smicronyx, this species is likely associated with sunflower (Helianthus) or related Asteraceae hosts, though specific ecological details for this species are poorly documented. The genus Smicronyx includes seed-feeding weevils that are economically significant pests of cultivated sunflowers.
Smicronyx corpulentus
Smicronyx corpulentus is a species of seed weevil in the family Curculionidae, described by LeConte in 1876. It is native to North America and belongs to a genus whose members are primarily associated with sunflower seeds as pests. Specific ecological details for this species remain poorly documented in published literature.
Smicronyx flavicans
Smicronyx flavicans is a species of seed weevil in the family Curculionidae, described by LeConte in 1876. It is native to North America, with records from Ontario, Canada. The genus Smicronyx includes several sunflower-associated seed weevils that are agricultural pests, though specific details about this particular species remain sparse in published literature.
Smicronyx incertus
Smicronyx incertus is a species of true weevil in the family Curculionidae, described by Anderson in 1962. The species is known from North America, with confirmed records from Manitoba, Canada. As a member of the genus Smicronyx, it belongs to a group commonly referred to as seed weevils, though specific ecological details for this particular species remain undocumented in the available literature.
Smicronyx pinguis
Smicronyx pinguis is a species of true weevil in the beetle family Curculionidae. It was described by Blatchley and Leng in 1916 and is known from North America, with records from Ontario, Canada. The genus Smicronyx includes seed weevils, many of which are associated with sunflower and other Asteraceae hosts, though specific biological information for S. pinguis remains sparse.
Smicronyx rhodopus
Smicronyx rhodopus is a species of true weevil in the beetle family Curculionidae. It is native to North America and belongs to a genus that includes several seed-feeding species associated with sunflowers. Specific biological details for this particular species remain poorly documented in available literature.
Smicronyx squalidus
Smicronyx squalidus is a species of true weevil in the family Curculionidae, first described by Casey in 1892. It belongs to a genus of seed weevils associated with sunflowers and related plants. The species is recorded from North America, including Ontario, Canada. Very little specific information is available for this particular species compared to its better-known congeners.
Smicronyx tesselatus
Smicronyx tesselatus is a species of true weevil in the beetle family Curculionidae. The genus Smicronyx comprises seed weevils associated with plants in the Asteraceae family, particularly sunflowers (Helianthus spp.). Several congeners in this genus are significant agricultural pests of cultivated sunflowers, though specific documentation for S. tesselatus is limited. The species was referenced in a 2021 Texas collecting trip report where it was initially misidentified as a lightly marked specimen of the related species Goes tesselatus, a cerambycid beetle.
Smicronyx tychoides
Smicronyx tychoides is a species of true weevil in the family Curculionidae, first described by LeConte in 1876. It is native to North America, with distribution records from Ontario, Canada and the broader North American region. As a member of the genus Smicronyx, it belongs to a group commonly known as seed weevils, many of which are associated with plants in the Asteraceae family. Specific ecological details for this species remain poorly documented in available sources.
Smicronyx vestitus
Smicronyx vestitus is a species of true weevil in the beetle family Curculionidae, first described by Casey in 1892. The genus Smicronyx includes seed weevils that are associated with sunflowers and other plants in the Asteraceae family. Some congeners, such as Smicronyx fulvus and Smicronyx sordidus, are recognized agricultural pests of sunflower crops. The specific biology and host associations of S. vestitus remain poorly documented in published literature.
Trichapion nebraskense
Trichapion nebraskense is a species of seed weevil in the family Apionidae. It belongs to a genus characterized by elongated rostrums and association with leguminous host plants. The species has been documented in the central United States, with records from Nebraska and surrounding regions.
Trichapion sayi
Trichapion sayi is a species of seed weevil in the family Apionidae. Members of the genus Trichapion are characterized by their distinctive elongated snouts and association with leguminous host plants. The species epithet honors Thomas Say, a pioneering American entomologist. Like other apionid weevils, this species likely develops in seeds or other plant tissues, though specific biological details remain poorly documented in accessible literature.
Tychius lineellus
leguminous seed weevil
Tychius lineellus is a leguminous seed weevil in the family Curculionidae. It belongs to a group of North American Tychius species thought to have dispersed from Eurasia via Beringia. The species is probably related to T. sordidus and T. caesius, which are considered remnants of an old Holarctic fauna associated with the Arcto-Tertiary flora.
Tychius semisquamosus
Tychius semisquamosus is a species of leguminous seed weevil in the family Curculionidae, described by Faust in 1893. It belongs to the semisquamosus group of North American Tychius species, which are associated with host plants in the genus Astragalus and Lotus. The species has been subject to taxonomic revision, with several previously described species (T. lamellosus, T. squamosus, T. intermixtus) now synonymized under this name. It represents part of a North American fauna derived from multiple independent dispersals from Eurasia.
Tychius sordidus
Tychius sordidus is a species of leguminous seed weevil in the beetle family Curculionidae, first described by LeConte in 1876. The species is found in North America. As a member of the genus Tychius, it belongs to a group of weevils commonly associated with leguminous plants, though specific ecological details for this species remain limited.
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.