Acrobasis caliginella

Hulst, 1878

Acrobasis caliginella is a snout moth (Pyralidae: Phycitinae) described by George Duryea Hulst in 1878. The is restricted to the southwestern United States, with confirmed records from California and Arizona. Larvae feed on multiple oak species (Quercus spp.), including coast live oak and interior live oak. Like other Acrobasis species, it likely develops as a concealed feeder in plant tissues.

Acrobasis caliginella by (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda. Used under a CC-BY license.

Acrobasis caliginella by (c) Donald Hobern, some rights reserved (CC BY). Used under a CC-BY license.

Acrobasis caliginella (41917908145) by Donald Hobern from Copenhagen, Denmark. Used under a CC BY 2.0 license.

Pronunciation

How to pronounce Acrobasis caliginella: /ˌæ.krəˈbeɪ.sɪs kæ.lɪ.dʒɪnˈɛl.ə/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Acrobasis are small to medium pyralid moths with distinctive elongated labial palps forming a "snout." Specific diagnostic features for A. caliginella are not well documented in available sources. Identification to species level likely requires examination of genitalia or reference to original description. The species may be distinguished from other Acrobasis in its range by association with California oak species and geographic restriction to California and Arizona.

Images

Habitat

Associated with oak woodlands and forests where Quercus occur. include coastal scrub, chaparral, and montane oak in California and Arizona.

Distribution

United States: California and Arizona.

Diet

Larvae feed on Quercus agrifolia (coast live oak), Quercus wislizeni (interior live oak), Quercus dumosa, Quercus durata (leather oak), and Quercus vaccinifolia (huckleberry oak).

Host Associations

Quercus agrifolia - larval food plantcoast live oak
Quercus wislizeni - larval food plantinterior live oak
Quercus dumosa - larval food plant
Quercus durata - larval food plantleather oak
Quercus vaccinifolia - larval food planthuckleberry oak

Ecological Role

As a herbivore on native California oaks, larvae contribute to nutrient cycling in oak woodland . The serves as a for , including ichneumonids in the Mesostenus, which have been documented parasitizing other Acrobasis species.

Similar Taxa

Acrobasis nuxvorellaPecan nut casebearer is a major agricultural pest on pecan (Carya illinoinensis) in the southern and central United States, but does not occur in California and Arizona where A. caliginella is found. A. nuxvorella has different associations and economic significance.
Other Acrobasis speciesNumerous congeneric exist in North America, many with specific plant associations. Accurate identification requires examination of morphological details or genitalia, as external features are often similar among species.

More Details

Parasitoid associations

The Acrobasis serves as for in the Ichneumonidae. Mesostenus , including M. gracilis, have been documented parasitizing Acrobasis caterpillars. The related species Acrobasis betulella, A. juglandis, and A. rubrifasciella are recorded hosts for the ichneumonid Calliephialtes grapholithae, suggesting potential similar parasitoid relationships for A. caliginella.

Taxonomic history

Described by George Duryea Hulst in 1878, a prominent American entomologist who described numerous Lepidoptera in the late 19th century. The specific epithet 'caliginella' derives from Latin 'caligo' meaning darkness or mist, possibly referring to coloration or .