Promachus yesonicus
species of insect
Promachus yesonicus, or shioya-abu (塩屋虻, シオヤアブ) in Japanese, is a species of robber flies. In Japanese, "shioya" means a salt merchant (someone who makes or deals in salt), and "abu" means a horse-fly. This insect is called "shioya-abu" because the males have a white tip to their tail that resembles salt.
Distribution
Promachus yesonicus is found throughout Japan from Hokkaido to Okinawa. They are visible from June to September.
Description
Male Promachus yesonicus have a white cotton-like bud at the end of their tails, while females do not. Adults can reach 23–30 millimetres (0.9–1.2 in) in length.
This brief starts where responsible research should: with the source description of “Promachus yesonicus” as species of insect. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the science & nature register because the source frames it as species of insect. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Jun 27, 2026. The linked authority identifier is Q7249673. None of the 0 selected statements returned an explicit reference.
A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. 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.
- Current terminology
- Classification context
- Finding cited technical literature
Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
- Establish the record: confirm the title “Promachus yesonicus”, its source revision and the description used here.
- Expand the search: follow Promachus yesonicus primary sources, Promachus yesonicus archive and Promachus research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Promachus yesonicus”?
- Has classification or technical consensus changed since the cited source?
- Is the terminology current, historical or disputed?
Search terms from this dossier
This entry incorporates text from “Promachus yesonicus” 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.