Lasioptera ephedrae
Cockerell, 1898
Mormon Tea Stem Gall Midge
Lasioptera ephedrae is a of gall midge in the Cecidomyiidae. It is known for inducing stem galls on Ephedra trifurca, a desert shrub commonly called Mormon tea. The species was described by Cockerell in 1898 and is found in arid regions of the southwestern United States and adjacent Mexico. Like other gall midges, it has a complex involving intimate association with its plant.
Pronunciation
How to pronounce Lasioptera ephedrae: //leɪˌsaɪəpˈtɛrə ɛˈfiːdriː//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
are tiny flies, typically 2-4 mm in length, with the characteristic delicate build of gall midges. The Lasioptera can be recognized by wing venation patterns and antennal structure, but -level identification usually requires examination of male genitalia or association with plant galls. The stem galls on Ephedra trifurca are the most reliable field indicator of this species.
Habitat
Arid and semi-arid regions where the plant Ephedra trifurca (Mormon tea) occurs. This includes desert scrub, dry washes, and rocky slopes in the southwestern United States and northern Mexico.
Distribution
Southwestern United States (Arizona, New Mexico, southern California, southern Nevada, southwestern Utah, western Texas) and adjacent northern Mexico. The range corresponds closely to that of its plant Ephedra trifurca.
Diet
Larvae feed internally within stem galls on Ephedra trifurca. feeding habits are not well documented but gall midges typically do not feed as adults or consume only nectar or honeydew.
Host Associations
- Ephedra trifurca - gall inducerForms stem galls on this plant
Life Cycle
Females lay on or near the stems of Ephedra trifurca. Larvae induce the formation of stem galls in which they develop, feeding on plant tissue. The gall provides protection and nutrition. occurs within the gall. emerge to mate and disperse. The number of per year is not well documented but likely varies with local climate conditions.
Ecological Role
As a gall inducer, this modifies plant growth and creates microhabitats that may be used by other organisms. The galls represent a form of plant- interaction that can affect host plant , though the magnitude of impact on Ephedra trifurca is not well studied.
Human Relevance
No direct economic importance. The galls may be of interest to naturalists and entomologists studying plant-insect interactions. The plant Ephedra trifurca has historical medicinal use by peoples, but the gall midge itself is not involved.
Similar Taxa
- Other Lasioptera speciesMany Lasioptera induce galls on different plants; identification requires host association or detailed morphological examination
- Other Cecidomyiidae on EphedraMultiple gall midge may occur on Ephedra species; L. ephedrae is specifically associated with E. trifurca stem galls
More Details
Taxonomic history
Described by Theodore Dru Alison Cockerell in 1898, based on specimens from New Mexico. The epithet 'ephedrae' directly references its plant .
Gall morphology
The stem galls induced on Ephedra trifurca are typically irregular swellings on the green photosynthetic stems. Detailed descriptions of gall structure are lacking in the accessible literature.