Empis tridentata

Coquillett, 1901

Empis tridentata is a of dance fly in the Empididae, first described by Coquillett in 1901. The species is distinguished by a distinctive trident-shaped gray marking on the . Like other empidids, are predatory and exhibit complex mating involving swarming and exchange. The species name refers to the three-pointed thoracic marking that serves as a key diagnostic feature.

Empis tridentata.1 by Beatriz Moisset. Used under a CC BY-SA 4.0 license.Empis tridentata.2 by Beatriz Moisset. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Empis tridentata: /ˈɛmpɪs traɪˈdɛntæta/

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Identification

The forward-pointing, trident-shaped gray mark on the yellowish distinguishes E. tridentata from other Empis . This marking is unique among North American Empis and provides immediate visual recognition. Examination of male genitalia may be required for definitive confirmation where ranges overlap with similar species.

Images

Appearance

Medium-sized dance fly with yellowish bearing a prominent trident-shaped gray mark that points forward. The distinctive thoracic pattern is the primary visual identifier for this . General body plan typical of Empis: slender, with long legs adapted for perching and capturing prey in .

Distribution

North America; specific range details not well documented in available sources. Observations recorded in iNaturalist suggest established in western regions of the United States.

Behavior

As a member of Empididae, likely engage in swarming typical of dance flies, with males capturing prey to present as to females. Specific behavioral observations for E. tridentata have not been documented.

Similar Taxa

  • Other Empis speciesLack the distinctive forward-pointing trident-shaped gray mark on the yellowish ; require examination of thoracic pattern or male genitalia for separation.

More Details

Etymology

The specific epithet 'tridentata' refers directly to the three-pointed (trident-shaped) marking on the , described as pointing forward.

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Sources and further reading