Cephini
Cephini is a tribe of within the , characterized by cylindrical, elongated bodies and that bore into the stems of grasses and sedges. Members of this tribe are distinguished from related groups by their reduced and the presence of a distinct, elongated in females. The tribe includes economically significant pests such as the .
Pronunciation
How to pronounce Cephini: /ˈkɛfɪnaɪ/
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Identification
Cephini can be distinguished from the related tribe Janthini by the presence of a distinct postocellar furrow and the arrangement of antennal . Members exhibit a cylindrical, somewhat elongated body form with reduced compared to other . The lack a closed , and the possess only one or two . Females possess an elongated, slender adapted for inserting into stems.
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Habitat
Associated with grassland and agricultural where grasses and sedges occur. are often found in meadows, pastures, and cereal fields.
Distribution
Holarctic distribution, with recorded across North America, Europe, and northern Asia.
Diet
bore into and feed internally within stems of grasses (Poaceae) and sedges (Cyperaceae). Specific associations vary by ; some are restricted to particular grass .
Life Cycle
with , larval, pupal, and stages. Females insert eggs into stems using the elongated . develop within stems, typically descending to the base to overwinter. occurs within the stem or in soil.
Behavior
Females exhibit stem-boring , inserting directly into tissue. are endophytic, feeding internally and causing stem weakening or in agricultural .
Ecological Role
act as in grass , potentially influencing and providing food for . In agricultural settings, some function as significant pests of cereal .
Human Relevance
Includes Cephus cinctus (), a major pest of wheat in North America causing economic losses through stem and reduced grain yield. Management relies on wheat and agents.
Similar Taxa
- JanthiniJanthini is the other tribe in ; distinguished by the absence of a postocellar furrow and different antennal structure.