Moths of North Carolina
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View PDFGelechiidae Members: 4 NC Records

Coleotechnites atrupictella (Dietz, 1900) - No Common Name


Taxonomy
Superfamily: Gelechioidea Family: GelechiidaeSubfamily: GelechiinaeTribe: LitiniP3 Number: 420711.00 MONA Number: 1792.00
Comments: The genus Coleotechnites includes 49 very small species that occur in North America. Most species are specialists on conifers and tend to use on a single genus of host plant. Many of the Coleotechnites species have almost identical genitalia that are not very useful in delineating closely related forms (Freeman, 1960; 1965). Freeman (1960) noted that host plants and the mining characteristics often provide the most reliable way to identify closely related species.
Identification
Field Guide Descriptions: Online Photographs: MPG, BugGuide, iNaturalist, Google, BAMONATechnical Description, Adults: Dietz (1900)Technical Description, Immature Stages: (McLeod, 1962)                                                                                 
Adult Markings: The following is based in part on the description by Dietz (1900). The labial palp is ashy gray with a series of dark bands on the second and third joint. The second joint has a brush of bristly hairs and is noticeably thicker than the narrow terminal joint. The antenna has alternating light and dark brown to blackish annuli. The forewing has a dirty white ground with blackish markings. Black dusting is often present along the costal margin from the wing base to about one-fifth the wing length, where it meets an oblique and diffuse fascia that reaches, or nearly reaches, the dorsal margin at about one-third. A similar broad fascia begins at about one-half and usually terminates before reaching the dorsal margin. A third fascia is present at around two-thirds that is narrower than the second, slightly oblique, and also does not reach the dorsal margin. A long black stripe in the middle of the wing extends from the second fascia to the third. In some specimens, the entire region between the two facias may be heavily dusted with black to produce a large blotch. The wing tip has a series of five or six large black spots that extend from the sub-apical region of the costa around the tip to the tornus. The cilia are light gray and dusted with dark fuscous scales near the wing tip. The hindwing and cilia are light grayish brown to pale cinereous.
Wingspan: 12 mm (Dietz, 1900)
Adult Structural Features: McLeod (1962) has detailed descriptions and illustrations of the male genitalia.
Adult ID Requirements: Identifiable from good quality photos of unworn specimens.
Immatures and Development: McLeod (1962) noted that the larval ecology of C. atrupictella and C. blastovora are indistinguishable. The following is based on his description of the life cycle of the latter In Canada. The adults mate in late July or early August and the eggs overwinter. The young larvae hatch in mid-June shortly after the buds of spruce and fir trees expand. The larva feeds spirally around the axis of the shoot, usually in the direction of the apex. It ties the needles together with silk to form a loose tube around the axis, then feeds on the base of the needles. In some instances it may partially consume the entire needle. Occasionally, the mature larvae may mine the needles. When this is the case, an elongated entrance hole is usually present near the middle of the needle. Pupation occur in July in Canada, either on the foliage or in the soil. The body of the mature larva is ivory-yellow with three irregular longitudinal brick-red or dark pink stripes. One is dorsal and the other two lateral. The head capsule is brown, and the prothoracic shield and anal plate are brown and bordered laterally and posteriorlv with dark gray (McLeod, 1962).
Larvae ID Requirements: Identifiable from good quality photos, especially where associated with known host plants.
Distribution in North Carolina
Distribution: Coleotechnites atrupictella is found at northern latitudes in North America in association with spruce-fir forests. The range includes the West Coast states, and almost all of southern Canada from British Columbia and the Northwest Territories eastward to Nova Scotia. In the US the range extends from Maine southward to Pennsylvania, and westward to northern Indiana and Michigan. A southern disjunct is present in western North Carolina, where we have records from both lower and higher elevations in the mountains.
County Map: Clicking on a county returns the records for the species in that county.
Flight Dates:
 High Mountains (HM) ≥ 4,000 ft.
 Low Mountains (LM) < 4,000 ft.
 Piedmont (Pd)
 Coastal Plain (CP)

Click on graph to enlarge
Flight Comments: Adults have been found in areas outside of North Carolina from April through September, with a seasonal peak in July and August. As of 2021, our records are from July and August.
Habitats and Life History
Habitats: In eastern North America the larvae feed on spruce and fir trees. We have records from the high mountains in regions with spruce-fir forests, but also from a lower elevation site that is far from any spruce-fir forests. This species uses Western Hemlock on the West Coast, so it is possible that they use Eastern Hemlock in North Carolina.
Larval Host Plants: This wide-ranging species uses a variety of conifers that are found in Canada and the West Coast states (Robinson et al., 2010). These include Balsam Fir ( Abies balsamea), Grand Fir (A. grandis), White Spruce (Picea glauca), Black Spruce (P. mariana), Red Spruce (P. rubens), Sitka Spruce (P. sitchensis), Lodgepole Pine (Pinus contorta), Apache pine (P. engelmannii), Ponderosa Pine (P. ponderosa), Douglas Fir (Pseudotsuga menziesii), and Western Hemlock (Tsuga heterophylla). In North Carolina, we have records from Mt. Mitchell where this species presumably uses Red Spruce and possibly Fraser Fir. We also have a low-elevation record from Buncombe Co., which suggests that other conifers such as Eastern Hemlock may be used.
Observation Methods: The adults are attracted to lights. More information is needed on host use in North Carolina, so we encourage naturalists to search for the larvae on young growth.
Wikipedia
See also Habitat Account for Montane Cool Mesic Conifer Forests
Status in North Carolina
Natural Heritage Program Status:
Natural Heritage Program Ranks: GNR SU
State Protection:
Comments: We have an apparent southern disjunct of this species in western North Carolina. More information is needed on the host use, distribution, and abundance of this species within the state before we can assess its conservation status.

 Photo Gallery for Coleotechnites atrupictella - No common name

Photos: 1

Recorded by: Brian Bockhahn, Paul Scharf on 2014-08-26
Yancey Co.
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