title: Coronostoma claireaen. sp. (Nematoda: Rhabditida: Oxyuridomorpha: Coronostomatidae) from the Indigenous MillipedNarceus gordanus(Chamberlain, 1943) (Diplopoda: Spirobolida) in Ocala National Forest, Florida.
abstract: Twenty-four individuals ofNarceus gordanus(Diplopoda: Spirobolidae) were collected in Ocala National Forest, FL, between November 2013 and July 2014. Each specimen was dissected to extract the intestine, which was removed and examined for parasitic nematodes.Coronostoma claireaen. sp. was collected from the hindgut and midgut of 10 specimens, and its morphology was examined with brightfield, differential interference contrast, phase contrast, and scanning electron microscopy. This species is separated from otherCoronostomaspp. by the following characteristics: body length less than 3 mm; head sense organs pit-like; first annule long, extending past middle of corpus, width similar to that of second annule; basal bulb pyriform; eggs larger than 60 × 50 µm. This species is the first North American record for the genusCoronostoma, which is removed from Thelastomatoidea: Thelastomatidae and reassigned to Coronostomatidae on the basis of presumed apomorphies. A key is provided for knownCoronostomaspp. The superfamily Coronostomatoidea is re-established for Coronostomatidae and Traklosiidae.
authors.forename: Gary
authors.initials: G
authors.lastname: Phillips
authors.forename: Ernest C
authors.initials: EC
authors.lastname: Bernard
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Pivar
authors.forename: John K
authors.initials: JK
authors.lastname: Moulton
authors.forename: Rowland M
authors.initials: RM
authors.lastname: Shelley
keywords: Spirobolida; Thelastomatoidea; United States; host-parasitic relationship; key; morphology; nematophagy; predator; scanning electron microscopy (SEM); taxonomy