Coptodisca negligens
Braun, 1920
Coptodisca negligens is a minute leaf-mining described by Annette Frances Braun in 1920. are active in late June to mid-July and possess distinctive metallic with orange- tips. The are specialized feeders on (Vaccinium macrocarpon), mining between leaf layers and occasionally reaching pest status in cultivated bogs.
Pronunciation
How to pronounce Coptodisca negligens: /kɔptoʊˈdɪskə ˈnɛɡlɪˌdʒɛnz/
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Identification
The sharply bicolored —pale metallic basally and bright orange- apically—are diagnostic among North . The extremely small size (4-4.5 mm wingspan) and association with further support identification. Similar Coptodisca lack this precise color pattern or occur on different .
Appearance
Minute with wingspan of 4-4.5 mm. divided into two distinct color zones: half pale leaden metallic, half bright orange-. uniformly gray.
Habitat
bogs and plantations; wetlands supporting Vaccinium macrocarpon.
Distribution
North America; recorded from Ohio and -growing regions.
Seasonality
One annually. on late June to mid-July. present mid-April to early July.
Diet
feed internally on (Vaccinium macrocarpon) leaves, creating serpentine or blotch mines between epidermal layers. feeding habits unknown.
Host Associations
- Vaccinium macrocarpon - larval ; sole documented
Life Cycle
: , , , . Larval development occurs within leaves. presumably in leaf mines or soil, though details not explicitly documented. Single synchronized with cranberry growing season.
Behavior
are , feeding between upper and lower leaf of . This concealed feeding habit protects larvae from and desiccation.
Ecological Role
; consumer of foliage. In cultivated settings, functions as a minor agricultural pest.
Human Relevance
Occasional pest of cultivated , though economic impact appears limited based on sparse documentation. Not known to be of or medical significance.
Similar Taxa
- Other Coptodisca speciesMany are with metallic , but differ in color pattern, size, or . C. negligens is distinguished by its unique bicolored forewings and exclusive association with .
More Details
Taxonomic note
Originally described in 'Lepidopteria' in early sources; now correctly placed in within superfamily Adeloidea.