Chlamisus quadrilobatus
(Schaeffer, 1926)
Chlamisus quadrilobatus is a of case-bearing leaf beetle in the Chrysomelidae, first described by Schaeffer in 1926. Like other members of the Chlamisus, construct protective cases from fecal material and plant debris that cover the entire body. The species has been recorded from regions in North America and Middle America. Published biological information is limited, reflecting its rarity in collections and limited observational records.
Pronunciation
How to pronounce Chlamisus quadrilobatus: /ˈklæmɪsəs ˌkwɒdrɪloʊˈbeɪtəs/
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Identification
Members of Chlamisus are distinguished from other chrysomelid by the presence of a complete larval and case formed from accumulated fecal pellets and plant material. Specific identification of C. quadrilobatus requires examination of adult , particularly the shape and lobing of the pronotum and ; the epithet "quadrilobatus" refers to four-lobed characteristics of these structures. Accurate determination typically requires comparison with or consultation with taxonomic literature.
Distribution
Recorded from North America and Middle America. Specific country-level records require verification from primary literature.
Life Cycle
follows the general pattern of Chlamisini: are laid on plants; larvae construct and inhabit portable cases that are enlarged progressively through development; occurs within the case; emerge and may continue to carry reduced cases or case remnants. Specific details for C. quadrilobatus have not been documented.
Behavior
and larvae are case-bearers, carrying protective coverings formed from fecal material and plant debris. This is characteristic of the tribe Chlamisini and serves as defense against and desiccation.
Ecological Role
As a leaf beetle, likely functions as a folivore in its , contributing to nutrient cycling through herbivory. Specific ecological impacts have not been studied.
Human Relevance
No documented economic importance. Rarely encountered due to small size, cryptic appearance, and case-bearing that provides camouflage.
Similar Taxa
- Other Chlamisus speciesConvergent case-bearing and similar overall require careful examination of pronotal and elytral lobing patterns for separation.
- Other Chlamisini genera (e.g., Exema, Neochlamisus)Share case-bearing habit but differ in case construction details, body proportions, and degree of pronotal development; -level identification requires examination of antennal structure and thoracic .
More Details
Taxonomic Note
The Chlamisus was historically confused with Exema, but modern classification recognizes Chlamisus as distinct based on pronotal and antennal characters. The specific epithet quadrilobatus refers to morphological features of the .
Collection Rarity
With only 7 observations in iNaturalist and limited GBIF records, C. quadrilobatus appears genuinely rare or undercollected, possibly due to its small size and effective camouflage provided by the case.