Anacampsis tristrigella
(Walsingham, 1882)
A small gelechiid with distinctive wing patterning described by Walsingham in 1882. The is recognized by its greyish-fuscous forewings with greenish iridescence, steel-grey costal streak, and characteristic white markings including a transverse fascia and three to four tooth-like streaks. Larvae are known to feed on American hazelnut (Corylus americana).
Pronunciation
How to pronounce Anacampsis tristrigella: //ˌænəˈkæmpsɪs ˌtrɪstrɪˈdʒɛlə//
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Identification
Distinguished from other Anacampsis by the combination of: steel-grey costal streak extending onto ; transverse white fascia with characteristic expansion, narrowing, and dilation pattern; and three to four white tooth-like streaks with joined bases. The reduplicated dark brown line separating these streaks from the fringes is particularly distinctive. Greenish iridescence on forewings visible in certain lights provides additional diagnostic cue.
Appearance
Wingspan approximately 12 mm. Forewings greyish fuscous with greenish hue in certain lighting, bearing a prominent steel-grey streak along the costal margin that extends over the front of the . Distinctive transverse white fascia present beyond the middle, expanded at the costal cilia, narrowed at wing center, and somewhat dilated at margin. Three to four white tooth-like streaks beyond the fascia, joined at bases toward margin, separated from steel-grey fringes by a reduplicated dark brown line that curves around the apex. Hindwings brown with grey fringes, oblique with barely apex. Costal margin base steel-grey.
Distribution
North America: recorded from Alabama, Arkansas, Manitoba, Massachusetts, Mississippi, Ontario, Quebec, Tennessee, and Texas.
Diet
Larvae feed on Corylus americana (American hazelnut). feeding habits not documented.
Host Associations
- Corylus americana - larval food plantAmerican hazelnut
Similar Taxa
- Other Anacampsis speciesShare general gelechiid and greyish wing coloration; distinguished by unique pattern of white fascia and tooth-like streaks, plus steel-grey costal streak extending onto
More Details
Etymology
The specific epithet 'tristrigella' refers to the three streak-like markings (three + streak + diminutive suffix) on the forewing apex.
Original description
Originally described as Gelechia tristrigella by Walsingham in 1882; later transferred to Anacampsis.