Atroposia oenotherana ( Riley, 1881 )

Brown, John W., 2019, New genera, new species, and new combinations in New World Cochylina (Lepidoptera: Tortricidae: Tortricinae), Zootaxa 4671 (2), pp. 195-222: 199

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Atroposia oenotherana ( Riley, 1881 )

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Atroposia oenotherana ( Riley, 1881)  , new combination

Figs. 3, 4View FIGURES 1–10, 20View FIGURES 19–26, 34View FIGURES 33–38

Conchylis oenotherana Riley, 1881: 316  .

Phalonia oenotherana: McDunnough 1939: 60  .

[Incertae sedis] oenotherana: Powell 1983: 42  ; Razowski 1997: 137.

[ Cochylini  New Genus 1] oenotherana: Brown 2005: 207  ; Metzler & Brown 2014: 278.

Atroposia oenotherana  is one of the more easily recognized Cochylina in the Nearctic fauna, with the basal half of the forewing yellow-tan and the distal half pinkish red with a variably developed, yellow-tan spot. The species was redescribed in detail by Razowski (1997: 137). The genitalia are highly divergent from those of other Cochylina, and on the basis of the distinct facies and unusual genitalia, oenotherana  is placed in a monotypic genus.

Atroposia oenotherana  is widely distributed from Nova Scotia to Manitoba, south to Florida and Texas. Adults have been collected mostly in July and August, with fewer records in May, June, and September, suggesting a single generation in the north and two generations in the southern portions of its range. Larvae are tip-tiers in the flowers of Oenothera  species ( Onagraceae  ) ( Riley 1881; Godfrey et al. 1987; many reared specimens in USNM); Oenothera biennis  (L.) has been recorded as the larval host in Georgia (USNM).

The illustration of the male genitalia of A. oenotherana  (from Vineland, Ontario, Canada) in Razowski (1997: figs. 123) deviates in several features (e.g., the shape of the median process of the transtilla, the shape of the juxta, the curvature of the phallus) from those of Fig. 3View FIGURES 1–10 (from Padre Island National Seashore, Texas, USA). Because barcodes of A. oenotherana  are represented by two BINs in BOLD ( Brown et al. 2019), it is possible that two species are concealed under this name, and these differences in genital morphology reflect two different species. Alternatively, the male genitalia shown in Fig. 3View FIGURES 1–10 and in Razowski (1997) may merely represent individual variation and/or artifacts of slide mounting.

Syntype ♀, USA, Missouri, r.f. Oenothera, M. Murtfeld  ( USNM). Riley (1881) referred to four specimens in his original description, but I have been able to locate only a single female syntype  .


Smithsonian Institution, National Museum of Natural History














Atroposia oenotherana ( Riley, 1881 )

Brown, John W. 2019

Conchylis oenotherana

Riley, C. V. 1881: 316

Phalonia oenotherana:

McDunnough, J. 1939: 60


Metzler, E. H. & Brown, J. W. 2014: 278
Brown, J. W. 2005: 207