Stenelytrana gigas

Stenelytrana gigas can be distinguished from other North American flower longhorns by its larger size relative to congeners and other Lepturinae. The species has the elongated body form typical of lepturine cerambycids, with antennae that are moderately long but not exceptionally elongated. Adults can be separated from the similar Stenelytrana emarginata by size differences and subtle morphological distinctions in elytral and pronotal characters. The specific epithet "gigas" refers to its relatively large stature within the genus. Accurate identification typically requires examination of detailed morphological features including antennal structure, elytral punctuation, and genitalia.

Adults are associated with flowering vegetation in diverse habitats including deciduous woodlands, forest edges, and areas with abundant herbaceous flowering plants. The species has been collected in mesic lowland deciduous forests and adjacent upland areas. Larval habitat requirements are poorly documented but presumably involve decaying wood or woody debris given the family Cerambycidae's typical biology.

North America, with confirmed records from the United States and Mexico. Specific documented localities include Texas, where it has been collected in association with riparian and woodland habitats, and broader distribution across the southern and central United States. The species' range extends into Mexico.

Adults have been observed active from spring through summer, with specific collection records indicating activity in May and June. The species likely has a flight period corresponding to peak flowering of associated host plants, with timing varying by latitude and elevation.

• Salix gooddingii - adult feeding/visitationAdults swept from foliage, suggesting association with this riparian willow species

Adults are diurnal and associated with flowers, where they likely feed on pollen, nectar, or other floral resources. The species has been observed on foliage of woody plants and is attracted to ultraviolet and mercury-vapor lights, indicating nocturnal flight activity. Adults are capable of strong flight and have been collected using both active sweeping techniques and passive light trapping.

As a flower-visiting beetle, adults likely contribute to pollination of associated flowering plants. The species functions as a member of the diverse cerambycid fauna in North American deciduous forest ecosystems. Larval stages, typical of Cerambycidae, presumably contribute to wood decomposition processes, though specific ecological impacts are undocumented.

The species is of interest to entomologists and coleopterists studying North American longhorn beetle diversity. It has been documented in biodiversity surveys and collecting efforts, including bait trapping studies comparing ethanol and ethanol-red wine attractants. No significant economic or agricultural impacts have been documented.

• Stenelytrana emarginataSimilar size, coloration, and flower-visiting behavior; distinguished by subtle morphological differences in antennal and elytral characters
• Lepturinae (other genera)Shared elongated body form and flower association; distinguished by genus-specific characters of pronotum, elytra, and antennal structure

• Cerambycidae
• Lepturinae
• flower longhorn
• North America
• pollen feeder
• diurnal
• nocturnal
• light-attracted

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life
• Ted C. MacRae | Beetles In The Bush | Page 6
• North America’s largest stag beetle | Beetles In The Bush