Euxoa bostoniensis

Grote, 1874

Boston dart, drab cutworm

Euxoa bostoniensis, commonly known as the Boston dart or drab , is a found in eastern and central North America. have a wingspan of 40–45 mm and are active in May and again from September to October. The are cutworms that feed on Nicotiana species, though the species occurs in areas where is not cultivated.

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Pronunciation

How to pronounce Euxoa bostoniensis: //juːkˈsoʊ.ə bɒˌstoʊniˈɛn.sɪs//

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Identification

can be distinguished from similar Euxoa by geographic range and period (May, and September–October). The drab, unmarked appearance is typical of many Euxoa species, requiring examination or molecular methods for definitive identification. The are indistinguishable from other species without rearing to adults.

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Habitat

Found in a variety of open including agricultural fields, meadows, and disturbed areas. The has been recorded in both -growing regions and areas where tobacco does not occur.

Distribution

Eastern and central North America: from Ontario and Maine south to North Carolina, west to Missouri and Michigan. Disjunct records from Florida, California, and South Dakota suggest occasional vagrant occurrences or possible misidentifications.

Seasonality

are on in May and again from September to October. with two distinct periods per year.

Diet

feed on Nicotiana ( and relatives). The species has been documented in areas where tobacco does not grow, indicating either use of alternative or from tobacco-growing regions.

Host Associations

  • Nicotiana - larval Primary documented ; specific Nicotiana not specified in sources

Life Cycle

with , , , and stages. Larvae are the stage, feeding in spring before pupating in soil. Adults emerge in May; second adults appear September–October.

Behavior

are and attracted to light. are nocturnal feeders, hiding in soil or debris during daylight hours. When disturbed, larvae curl into a characteristic C-shape.

Ecological Role

Larval stage functions as a , consuming . As a , it can act as a seedling pest, severing plant stems at or below the soil surface. Serves as for and .

Human Relevance

Minor agricultural pest of . The "drab " reflects its status as a cutworm of limited economic importance compared to more damaging .

Similar Taxa

  • Euxoa messoriaSimilar drab appearance and overlapping range; requires dissection for separation
  • Euxoa ochrogasterAnother Euxoa with similar and preferences
  • Agrotis ipsilon has similar larval habits but larger size and different markings

More Details

Nomenclature

Originally described as Agrotis bostoniensis by Grote in 1874; later transferred to Euxoa.

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Sources and further reading