Brachypanorpa

Distinguished from other Panorpodidae genera by short rostrum (hence 'short-nosed scorpionfly') and sexual dimorphism in mouthpart length. Females have elongated mouthparts for accessing subcortical fluids; males have markedly shorter mouthparts. Five species differentiated primarily by geographic distribution and subtle morphological features.

Moist, shaded forest habitats. Adults found in association with decaying logs. Larval development confined to rotten wood.

Disjunct distribution: eastern North America and Pacific Northwest of North America. Five species with limited, non-overlapping ranges: B. carolinensis (southeastern), B. jeffersoni (eastern), B. montana (Rocky Mountains), B. oregonensis (Pacific Northwest), B. sacajawea (Pacific Northwest).

Larvae feed on fungal growth and decaying organic matter within rotten wood. Adult females feed on subcortical fluids using elongated mouthparts. Adult male feeding habits not explicitly documented.

Larval development occurs in rotten wood. Adults emerge into forest habitats. Specific details on pupation, adult longevity, and reproductive timing not documented.

Both sexes attracted to light; males captured at light traps more frequently than females. Sexual dimorphism in mouthpart structure directly linked to differential feeding ecology between sexes.

Decomposers as larvae, contributing to nutrient cycling in forest ecosystems through consumption of fungal growth and decaying wood. Role in food web as prey items not documented.

• PanorpaTrue scorpionflies in family Panorpidae; distinguished by longer rostrum and different wing venation patterns.
• PanorpodesOther genus in Panorpodidae; Brachypanorpa separated by short rostrum and western North American distribution of some species.

• scorpionfly
• forest insect
• decomposer
• sexual dimorphism
• North America

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• The Biology of Brachypanorpa (Mecoptera)