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Thopha sessiliba

species of true bug

Specimen drawers, botanical folios and brass scientific instruments under study light
Science and natureInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 7, 2025
Entity authorityQ16759416 ↗
Source-derived summary

Thopha sessiliba, commonly known as the northern double drummer, is an Australian cicada native to Queensland, the Northern Territory and northern Western Australia. Adults perch almost exclusively on ghost gums.

William Lucas Distant described the northern double drummer in 1892, but incorrectly gave the type locality as Sydney.

Description

The northern double drummer is a large species of cicada, the second largest in Australia, just smaller than the largest species, the double drummer. The male and female average 4.56 cm long. The thorax is 1.85 cm in diameter. The eyes are light brown tinged with purple, and the postclypeus dark red-brown. The head is variable in colour, but never black like the double drummer. The thorax is brown with lighter golden-brown markings. The mesonotum is brown tinged with purple.

Editorial summary

“Thopha sessiliba” enters the record as species of true bug. Crown Archives preserves that source wording while asking what Thopha, sessiliba and species can confirm, complicate or overturn.

Editorial reviewA practical orientation to terminology and classification, particularly when read beside dated observations, specimens or technical literature. The current lead gives the account dated anchors—1892—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Thopha, sessiliba and species.
Editorial analysis

Why this record matters

“Thopha sessiliba” is worth following because a concise public description often conceals a longer documentary argument. Here, Thopha, sessiliba and species provides the most credible route into that argument.

Evidence profile

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 7, 2025. The linked authority identifier is Q16759416. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1892.

Critical limits

Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. 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.

Best used for
  • Current terminology
  • Classification context
  • Finding cited technical literature
Verify next

Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.

Three-step research path

  1. Establish the record: confirm the title “Thopha sessiliba”, its source revision and the description used here.
  2. Expand the search: follow Thopha sessiliba primary sources, Thopha sessiliba archive and Thopha 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 “Thopha sessiliba”?
  2. Has classification or technical consensus changed since the cited source?
  3. Which observation, specimen, dataset or publication supports the account?
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Source & attribution

This entry incorporates text from “Thopha sessiliba” 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.