Atroposia oenotherana ( Riley, 1881 ) Brown, 2019

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

Atroposia oenotherana ( Riley, 1881) , new combination

Figs. 3, 4 , 20 , 34

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. 3 (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. 3 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 .

Figures

FIGURES 1–10. Adults of Cochylini genera. 1. Anacochylidia maderana, Madera Canyon, Santa Rita Mountains, Arizona (EME). 2. Cagiva cephalanthana, Dorman Lake, Oktibbeha Co., Mississippi (USNM). 3. Atroposia oenotherana, Houston, Harris Co., Texas (USNM). 4. Atroposia oenotherana, Radisson, Onondaga Co., New York (USNM). 5. Cybilla hubbardana, Shafter, Presidio Co., Texas (USNM). 6. Cybilla hubbardana, Lordsburg, Hidalgo Co., New Mexico (CNC). 7. Honca grandis, Chimney Gulch, Golden, Colorado (USNM). 8. Pogospinia floridana, Long Key State Park, Monroe Co., Florida (USNM). 9. Nycthia pimama, Portal, Cochise Co., Arizona (USNM). 10. Nycthia yuccatana, Falcon State Park, Starr Co., Texas (USNM).

FIGURES 19–26. Male genitalia of Cochylini genera. 19. Anacochylidia maderana, Palmerlee, Arizona, USNM slide 23,359. 20. Atroposia oenotherana, Padre Island National Seashore, Texas, USNM slide 153,596. 21. Cagiva cephalanthana, Dorman Lake, Mississippi, USNM slide 150,530. 22. Cybilla hubbardana, Tucson, Arizona, USNM slide 29,397. 23. Honca grandis, Ogden Canyon, Utah, USNM slide 153,598. 24. Nycthia pimama, Blair Valley, California, USNM slide 144,042. 25. Nycthia yuccatana, Laguna Atacosa, Texas, USNM slide 120,405. 26. Pogospinia floridana, Key Largo, Florida, USNM slide 23,249.

FIGURES 33–38. Female genitalia of Cochylini genera. 33. Anacochylidia maderana, Palmerlee,Arizona, USNM slide 23,358. 34. Atroposia oenotherana, Padre Island National Seashore, Texas, USNM slide 153,597. 35. Cagiva cephalanthana, Dorman, Mississippi, USNM slide 153,609. 36. Cybilla hubbardana (holotype), Tucson, Arizona, USNM slide 23833. 37. Honca grandis, Wellsville, Utah, USNM slide 153,599. 38. Nycthia pimama, Miller Canyon, Arizona, slide MGP 660.