Homoeolabus analis
(Illiger, 1794)
Leaf-rolling weevil, Oak leaf rolling weevil
Homoeolabus analis is a leaf-rolling weevil in the Attelabidae, native to North America. The is notable for its distinctive reproductive : females cut and roll oak leaves into protective structures called nidi (singular: nidus) to shelter their . This behavior, termed "nidification," is subject to kleptoparasitism by the thief weevil Pterocolus ovatus, which steals eggs from these leaf rolls. Despite their conspicuous leaf damage, generally cause minimal impact to plant health.
Pronunciation
How to pronounce Homoeolabus analis: //həˌmiːoʊˈlæbəs əˈneɪlɪs//
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Identification
Distinguished from other weevils by association with rolled oak leaf nidi; the nidus itself serves as a field indicator. Specific morphological characters distinguishing H. analis from require examination and are not documented in available sources.
Images
Habitat
Oak-dominated environments where suitable leaf material is available for nidification.
Distribution
North America, with confirmed records from Canada (Manitoba, Ontario, Québec, Saskatchewan) and the United States (Florida).
Host Associations
- Quercus - nidification substrateOak leaves used for leaf-rolling ; specific oak not documented in available sources
Life Cycle
are laid within rolled leaf structures (nidi) constructed by females. The leaf roll protects developing eggs and presumably larvae, though specific developmental stages and duration are not documented in available sources.
Behavior
Females perform nidification: cutting oak leaves and rolling them into cigar-shaped structures to enclose . This has been observed to attract the kleptoparasitic thief weevil Pterocolus ovatus, which invades nidi to consume eggs.
Ecological Role
Serves as for the obligate kleptoparasite Pterocolus ovatus; the thief weevil depends on H. analis nidi for .
Human Relevance
Considered a minor pest of oaks with minimal economic or ecological impact; no management typically required.
Similar Taxa
- Pterocolus ovatusFrequently found in association with H. analis nidi, but distinguished as a separate by its kleptoparasitic and different placement (Rhynchitidae)
More Details
Nidification terminology
The leaf roll structure is termed a 'nidus' (plural 'nidi' or 'niduses'), from the Latin word for 'nest'. The act of constructing this structure is called 'nidification'.