Argaplana
genus of worms
Argaplana is a genus of land planarians, the only member of the tribe Argaplanini in the family Rhynchodeminae. It contains the sole species Argaplana ranuii. It is native to New Zealand.
Description
The tribe Argaplanini is characterized by pigment cup eyes in multiple rows around the body's front tip that continue to the back end along the dorsal side, ventral testes and efferent ducts, tripartite cutaneous musculature, cutaneous longitudinal muscles in bundles, a lack of a ring zone, and a creeping sole that is over half of the body width.
The genus Argaplana is characterized by a small, tapered body with a mouth at the mid-third of the body, muscles that are longitudinal, circular, and helical, a penis lacking papilla, ovovitelline ducts that unite then enter the female genital canal ventro-posteriorly, and a lack of a resorptive bursa, adenodactyls and a viscid gland.
Argaplana ranuii is a cream-white color with a slightly paler creeping sole. Its body has a blunt front end and a rounded back end. Multiple eyes are crowded around the front tip.
Etymology
The generic name of Argaplana, and the tribe name by extension, are derived from Argus Panoptes, the many-eyed giant of Greek mythology, and the Latin word plana, meaning "planarian". This is in reference to the planarian's several eyes at its anterior tip.
“Argaplana” enters the record as genus of worms. Crown Archives preserves that source wording while asking what Argaplana, genus and worms can confirm, complicate or overturn.
Why this record matters
“Argaplana” is worth following because a concise public description often conceals a longer documentary argument. Here, Argaplana, genus and worms provides the most credible route into that argument.
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 26, 2025. The linked authority identifier is Q21221184. None of the 0 selected statements returned an explicit reference.
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.
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This entry incorporates text from “Argaplana” 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.