Stigmella juglandifoliella
(Clemens, 1861) Wilkinson et al., 1979
Pecan serpentine leafminer
Stigmella juglandifoliella is a microlepidopteran in the , commonly known as the pecan serpentine . The is a whose create serpentine mines in the leaves of pecan (Carya illinoinensis). It is currently known from a restricted range in the eastern United States.
Pronunciation
How to pronounce Stigmella juglandifoliella: //stɪɡˈmɛlə dʒuːˌɡlændɪfoʊliˈɛlə//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
This can be distinguished from other Stigmella by its association with pecan (Carya illinoinensis) and the serpentine form of its leaf mines. Definitive identification requires examination of or molecular analysis, as is standard for . The similar Stigmella castaneaefoliella mines chestnut (Castanea) leaves rather than pecan.
Habitat
Found in areas where pecan trees (Carya illinoinensis) occur, including natural stands, orchards, and planted specimens. The is dependent on its for survival.
Distribution
Recorded from Ohio, Pennsylvania, and Kentucky in the United States. The range appears restricted to the pecan's distribution in the eastern and central United States.
Seasonality
Probably , with two per year. Specific periods are not documented in the available literature.
Diet
feed exclusively on Carya illinoinensis (pecan), mining the leaves of this . No other host plants have been recorded.
Host Associations
- Carya illinoinensis - obligate larval pecan
Life Cycle
are laid on pecan leaves. feed as , creating serpentine tunnels within leaf tissue. likely occurs within the leaf mine or in soil/litter, though specific details are not documented. are active during periods corresponding to the probable .
Behavior
are and attracted to light. are , feeding internally within leaf tissue and leaving visible serpentine mines.
Ecological Role
As a , contribute to pressure on pecan trees. The ecological significance is likely minor in healthy trees but may interact with other stressors in orchard settings. The serves as a food source for and other , though specific records are not documented.
Human Relevance
Of minor economic concern in pecan orchards, where leaf mining damage can reduce photosynthetic capacity. The is referenced in agricultural extension literature regarding pecan pest management. It has been studied as part of programs for pecan.
Similar Taxa
- Stigmella castaneaefoliellaAlso a serpentine in the same , but specialized on chestnut (Castanea) rather than pecan; distinguished by association and
- Other Stigmella species on CaryaSeveral Stigmella mine hickory and pecan leaves; precise identification requires morphological examination of
More Details
Original Description
Originally described as Nepticula juglandifoliella by Clemens in 1861, later transferred to Stigmella by Wilkinson et al. in 1979.
Research Context
The has been referenced in studies of pecan pest management, including work published in the Journal of Economic (1985) on management strategies for the pecan serpentine .