Heliothis phloxiphaga
Grote & Robinson, 1867
Darker-spotted Straw Moth
Heliothis phloxiphaga, commonly known as the Darker-spotted Straw , is a noctuid moth found across the United States and southern Canada. The caterpillars feed on a variety of plants and are considered pests of certain trees including elm (Ulmus), apple (Malus), and cherry (Prunus). are active during summer months. The species was previously grouped with Heliothis acesias and Heliothis australis.
Pronunciation
How to pronounce Heliothis phloxiphaga: //hɛˈli.oʊˌθɪs floʊkˈsɪfəˌɡə//
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Identification
Formerly grouped with Heliothis acesias and Heliothis australis, from which it has been separated taxonomically. Specific diagnostic features distinguishing it from these related are not documented in available sources.
Images
Distribution
Found in the United States and southern Canada. Distribution records include Alberta, Manitoba, and Saskatchewan in Canada, and Vermont in the United States.
Seasonality
are on-wing during summer months.
Diet
Caterpillars feed on a variety of plants. Documented plants include trees in the Ulmus (elm), Malus (apple), and Prunus (cherry).
Host Associations
- Ulmus - larval caterpillars considered pests of this tree
- Malus - larval caterpillars considered pests of this tree
- Prunus - larval caterpillars considered pests of this tree
Ecological Role
Caterpillars serve as prey for mason wasps. Pterocheilus quinquefasciatus females have been observed hunting and paralyzing Heliothis phloxiphaga caterpillars to provision nest , with up to five caterpillars stored per cell.
Human Relevance
Caterpillars are considered pests of certain ornamental and fruit trees, specifically Ulmus, Malus, and Prunus .
Similar Taxa
- Heliothis acesiasPreviously grouped with H. phloxiphaga; now recognized as a separate
- Heliothis australisPreviously grouped with H. phloxiphaga; now recognized as a separate
More Details
Taxonomic History
Heliothis acesias and Heliothis australis were previously considered with H. phloxiphaga but have since been separated as distinct .