Condylostylus nigrofemoratus

Species identification within Condylostylus generally requires examination of male genitalia. The specific epithet "nigrofemoratus" suggests darkened femora, which may aid in distinguishing this species from congeners. Generic assignment can be made based on overall dolichopodid morphology: small size, metallic coloration, and long legs.

Gardens, forest edges, and similar sunny habitats with foliage. Typical of Condylostylus species observed in open, vegetated areas.

Observations recorded from North America, including Illinois. The species was described from material likely of Neotropical or Nearctic origin given Walker's 1849 description.

Predatory on other small insects. Feeds using modified labellum that can crush or tear prey.

Larval biology unknown for this species. Dolichopodid larvae are generally predatory, with many species having aquatic or semi-aquatic larvae.

Highly active, rarely stationary, making photography difficult. Males possess genital claspers visible as forward-protruding appendages at abdominal tip.

Predator of small insects, potentially contributing to natural pest control in gardens and vegetated habitats.

Valuable garden ally due to predatory habits. Subject of interest for insect photographers and naturalists.

• Other Condylostylus speciesRequire genital examination for definitive separation; C. nigrofemoratus distinguished by dark femora implied by epithet
• Dolichopus speciesSimilar metallic dolichopodids; males of Dolichopus have distinctive scaled tarsi used in courtship displays, absent in Condylostylus
• Hydrophorus speciesAquatic dolichopodids that skate on water surfaces; Condylostylus species are primarily foliage-dwelling

• Dolichopodidae
• predatory
• metallic
• garden insect
• North America

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life
• Bug Eric: Long-legged Flies