Protaplonyx sarcobati

(Felt, 1914)

Greasewood Leaf Gall

Protaplonyx sarcobati is a gall midge in the Cecidomyiidae, known for inducing galls on leaves of greasewood (Sarcobatus vermiculatus). The was originally described by Felt in 1914 as Aplonyx sarcobati and later transferred to Protaplonyx. It is documented from limited observations in western North America.

Pronunciation

How to pronounce Protaplonyx sarcobati: /ˌproʊtəˈplɒnɪks sɑːrˈkoʊbəti/

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Identification

Identification relies on association with plant galls. The is distinguished from other Protaplonyx by its specific association with Sarcobatus vermiculatus. requires examination; larvae are found within leaf galls. Distinguishing from other gall midges on greasewood requires rearing adults from identified galls.

Habitat

Associated with stands of greasewood (Sarcobatus vermiculatus), a shrub of saline or alkaline soils in arid and semi-arid regions. Occurs in salt desert scrub, playa margins, and riparian areas with high soil salinity.

Distribution

Western North America; documented from regions where Sarcobatus vermiculatus occurs, including the Great Basin, Colorado Plateau, and adjacent arid regions of the United States.

Host Associations

  • Sarcobatus vermiculatus - gall inducer on leavesGreasewood; sole documented . Forms leaf galls.

Behavior

Induces gall formation on leaves of the plant. Larvae develop within galls.

Ecological Role

As a gall inducer, modifies plant tissue, potentially affecting leaf function and serving as a food source for .

Human Relevance

No significant economic or medical importance. Of interest to gall researchers and entomologists studying plant-insect interactions in saline .

Similar Taxa

  • Other Protaplonyx speciesSame ; distinguished by plant association and gall . P. sarcobati is specific to Sarcobatus vermiculatus.
  • Other Cecidomyiidae on greasewoodMultiple gall midges may occur on Sarcobatus; accurate identification requires specimen examination and -specific gall characteristics.

More Details

Original description

First described by Ephraim Porter Felt in 1914 as Aplonyx sarcobati, based on specimens from greasewood. The generic transfer to Protaplonyx reflects taxonomic revision of the Aplonyx complex.

Observation status

Documented by limited iNaturalist observations (31 records as of source date), suggesting it is underreported or genuinely uncommon, possibly due to restricted plant distribution and specialized requirements.

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