Gnorimoschema powelli

(Povolný, 1998)

Desert Broom Stem Gall Moth

Gnorimoschema powelli is a small in the Gelechiidae, described by Povolný in 1998. It occurs in the southwestern United States, specifically California and Arizona. The is notable for its larval : the caterpillars induce stem galls on Baccharis sarothroides, a shrub commonly known as desert broom.

Pronunciation

How to pronounce Gnorimoschema powelli: /nɒrɪmoʊˈskɛmə ˈpaʊɛli/

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

Identification

No specific diagnostic features for distinguishing G. powelli from are documented in available sources. Identification likely requires examination of genitalia or molecular analysis, as is typical for Gnorimoschema .

Habitat

Associated with desert shrub where the plant Baccharis sarothroides occurs. The host plant typically grows in dry, open including desert washes, slopes, and disturbed areas in the Sonoran and Mojave Desert regions.

Distribution

Recorded from California and Arizona in the southwestern United States. The distribution corresponds to the range of its plant Baccharis sarothroides.

Diet

Larvae feed within stem galls on Baccharis sarothroides (Asteraceae). The specific feeding mechanism—whether tissue consumption, sap feeding, or gall manipulation—is not documented. feeding habits are unknown.

Host Associations

Baccharis sarothroides - larval Larvae induce stem galls on this shrub

Life Cycle

Larval development occurs within stem galls on the plant. Details of placement, larval instars, site, and are not documented.

Behavior

Larvae are gall-formers, inducing abnormal stem growth on the plant that provides protected feeding . including activity, mating, and oviposition has not been described.

Ecological Role

As a gall-former, the manipulates plant growth to create protected larval . The ecological impacts on host plant and interactions with gall-associated organisms (, ) are unstudied.

Similar Taxa

Gnorimoschema gallaesolidaginisAlso a gall-forming Gnorimoschema , but occurs on goldenrod (Solidago) in eastern North America rather than Baccharis in the Southwest
Other Gnorimoschema speciesNumerous exist, many undescribed or poorly known; accurate identification requires examination

More Details

Taxonomic note

The epithet 'powelli' likely honors Jerry Powell (1933-2023), the renowned UC Berkeley lepidopterist who described many Gnorimoschema species and whose students made substantial contributions to the of this .

Gall morphology

The specific form of galls induced by G. powelli (shape, size, location on stem) has not been described in published literature.