Dysmachus trigonus
species of insect

Dysmachus trigonus, the fan-bristled robberfly, is a species of robber fly (family Asilidae). It preys on other insects in flight.
Identification
Body length 17 mm. long. Difficult to distinguish from other Dysmachus. Seguy (1927) Wolff, Gebel and Geller-Grimm (2021), ( Majer (1997), van den Broek (1979), Stubbs and Falk (2001) all provide keys, descriptions and illustrations. Older works are also useful eg.
Begin with the source’s own compact description: “Dysmachus trigonus” is species of insect. The dossier treats that line as a proposition to test through Dysmachus, trigonus and species, not as a finished interpretation.
Why this record matters
The phrase “species of insect” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Sep 1, 2026. The linked authority identifier is Q10757300. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1927, 2021, 1997 and 1979.
Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
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Questions for further research
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This entry incorporates text from “Dysmachus trigonus” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.