CACrown ArchivesThe cinema collection
Menu
Research dossier · General Reference

Douglasiidae

family of insects

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 8, 2026
Entity authorityQ1078371
Source-derived summary

Douglasiidae is a small Lepidopteran family. It includes around 32 species of micromoth whose adults are collectively called Douglas moths, after British lepidopterist and hemipterist John William Douglas. The largest genus in the family is Tinagma. They are primarily found in the Palearctic realm, with some Nearctic species. The adults have a 6 to 15 mm wingspan, with a reduced hindwing venation and long fringes. The larvae are leaf miners or borers, primarily in stems and petioles, belonging to Boraginaceae, Labiatae, and Rosaceae.

Genera

There are three extant genera:

Klimeschia Amsel, 1938 – Palearctic

Protonyctia Meyrick, 1932 – Ecuador

Tinagma Zeller, 1839 (=Douglasia Stainton, 1854) – Palearctic and Nearctic

One genus is known from the fossil record:

†Tanyglossus Poinar, 2017 Cenomanian, Burmese amber, Myanmar; its placement in the family Douglasiidae was contested by Yagi (2026).

Editorial summary

Begin with the source’s own compact description: “Douglasiidae” is family of insects. The dossier treats that line as a proposition to test through Douglasiidae, family and insects, not as a finished interpretation.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—1938, 1932, 1839, 1854—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, Douglasiidae, family and insects is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “family of insects” 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.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jul 8, 2026. The linked authority identifier is Q1078371. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1938, 1932, 1839 and 1854.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. 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

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Douglasiidae”, its source revision and the description used here.
  2. Expand the search: follow Douglasiidae primary sources, Douglasiidae archive and Douglasiidae research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Douglasiidae”?
  2. Which institution is responsible for the underlying evidence?
  3. Which cited source is closest to the event, object or claim?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from Douglasiidae” 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.