Chionodes bicostomaculella
(Chambers, 1872)
Two-spotted Chionodes Moth
Chionodes bicostomaculella is a small gelechiid found in eastern North America. display distinctive dark forewings with ochreous costal spots and irregular transverse banding. Larvae are known to feed on oak (Quercus). The species was described by Chambers in 1872.
Pronunciation
How to pronounce Chionodes bicostomaculella: /kaɪˈoʊnoʊdiːz ˌbaɪkoʊstomækjuˈlɛlə/
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Identification
Distinguished from similar Chionodes by the specific arrangement of forewing markings: two ochreous costal spots (one basal and indistinct, one and distinct) with a corresponding spot, and three irregular transverse bands formed by blackish patches. The combination of a small basal costal spot with a larger apical costal spot is diagnostic. Examination of genitalia may be required for definitive separation from closely related species.
Appearance
Forewings are blackish to very dark brown, intermixed with ochreous and grey. Two ochreous costal spots are present: a small, indistinct spot near the base and a more distinct spot at the beginning of the cilia. An opposite ochreous spot corresponds to the second costal spot. Several undefined irregular blackish spots or patches form three irregular transverse bands—one adjoining each costal spot and one between them. Wing pattern is characteristic of the but with specific spot arrangement.
Habitat
Associated with oak-dominated forests and woodlands where Quercus occur. Specific microhabitat preferences for are not documented.
Distribution
Eastern and central North America: recorded from Vermont and Michigan south to Florida and Texas. Distribution records also include Canada.
Seasonality
activity period not precisely documented; likely follows typical temperate patterns with peak activity in spring and summer.
Diet
Larvae feed on Quercus (oak) . feeding habits are not documented.
Host Associations
- Quercus - larval food plant-level association; specific oak not documented
Life Cycle
Complete with , larval, pupal, and stages. Larval stage is associated with oak foliage. Specific details of site and number of per year are not documented.
Ecological Role
Larval herbivore on oak trees; contributes to oak herbivore . Specific ecological impacts are not quantified.
Human Relevance
No documented economic or agricultural significance. Occasionally encountered by naturalists and enthusiasts.
Similar Taxa
- Other Chionodes speciesShare similar wing pattern elements and body form; require examination of spot arrangement or genitalia for separation
More Details
Original description
Originally described as Depressaria bicosto-maculella by Chambers in 1872, later transferred to Chionodes