Coleophora sacramenta
Heinrich, 1914
Coleophora sacramenta is a case-bearing in the Coleophoridae, described by Heinrich in 1914. It occurs in the western United States, particularly California. The is notable for its distinctive pistol-shaped larval case and its association with diverse plants across multiple .
Pronunciation
How to pronounce Coleophora sacramenta: //ˌkoʊliˈɒfərə ˌsækrəˈmɛntə//
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Identification
can be distinguished from other Coleophora by genitalia examination; the species lacks reliable external diagnostic features visible without dissection. Larvae are identified by their pistol-shaped cases, which differ from the more common tubular or straight cases of related species. The case shape is a key diagnostic trait for this species.
Habitat
Associated with plants in cultivated and wild settings where Malus, Prunus, Populus, Tilia, or Chaenomeles occur. Specific preferences beyond host presence are not documented.
Distribution
United States, including California. Records are sparse; the full range within North America is poorly characterized.
Diet
Larvae feed on leaves of Malus, Prunus (including Prunus americana), Populus, Tilia, and Chaenomeles . The breadth of use across multiple plant is unusual for the .
Host Associations
- Malus - larval food plant-level association
- Prunus - larval food plantincluding Prunus americana
- Prunus americana - larval food plantspecific documented
- Populus - larval food plant-level association
- Tilia - larval food plant-level association
- Chaenomeles - larval food plant-level association
Life Cycle
Larvae construct portable cases from silk and plant material, typical of Coleophoridae. The pistol-shaped case is a distinctive feature of this . occurs within the case. period is not well documented.
Behavior
Larval case construction follows the pattern of portable, camouflaged shelters. The pistol-shaped case is carried during feeding and movement.
Ecological Role
as larva; specific ecological impacts are not quantified. Polyphagy across Rosaceae, Salicaceae, and Malvaceae (sensu lato) suggests ecological flexibility.
Human Relevance
Potential minor pest of cultivated Malus (apple) and Prunus (plum, cherry) ; economic significance is not documented. The species is rarely encountered due to its small size and inconspicuous habits.
Similar Taxa
- Coleophora siccifoliaAlso constructs pistol-shaped cases; requires genitalia examination for definitive separation
- Other Coleophora speciesMost construct straight or tubular cases; case shape provides preliminary separation from C. sacramenta
More Details
Taxonomic history
Described by Carl Heinrich in 1914; the specific epithet 'sacramenta' refers to Sacramento, California, the type locality.
Case morphology
The pistol-shaped case—narrow anteriorly, expanded posteriorly—is diagnostic and unusual within the , though similar cases occur in C. siccifolia and a few other .