Chordaropa myora (Stanisic, 2010)

Stanisic, John Stanisic Lorelle & Holcroft, formerly, 2025, Two new species of Chordaropa Stanisic, 2016 from differing bushland habitats in Brisbane City, south-east Queensland (Gastropoda: Eupulmonata: Charopidae), Memoirs of the Queensland Museum | Nature 66, pp. 63-72 : 69-71

Chordaropa myora (Stanisic, 2010) ( Figs 1, 3B, 4E–F)

Gyrocochlea myora Stanisic, 2010 (in Stanisic et al. 2010), sp. 286 — Myora, Minjerribah, SEQ.

Chordaropa myora (Stanisic, 2010) , Stanisic 2016, p. 6.

Material examined: Holotype: QMMO20783 , c. 2 km NE Dunwich on Dunwich-Myora Road, Minjerribah , SEQ ( 27°29' S, 153°24' E), rainforest, in litter, coll. J. Stanisic, 23.iii.1989. Height of shell 3.03 mm, diameter 5.16 mm, width of umbilicus 1.23 mm, D/U 4.20, H/D 0.59, whorls 4.75.

Paratypes: QMMO78948 , 2 RC,same data as holotype ; QMMO16819 , 19 RC/6SC, Myora, Minjerribah, SEQ , rainforest, under logs, coll. J. Stanisic, 29.i.1984 .

Diagnosis: Shell tiny, diameter 4.09–5.84 mm; protoconch sculptured with 18–20 low, broad spiral cords; teleoconch with 90–110 radial ribs on first whorl, 210–240 on fourth whorl; umbilicus wide U-shaped, diameter 1.30 mm.

Distribution and habitat: Known only from Myora, Minjerribah, SEQ ; living under logs in notophyll vine forest.

Remarks: Chordaropa myora (Stanisic, 2010) is readily distinguished from the two new species described here by the greater number of radial ribs on the fourth whorl. Chordaropa myora has more tightly coiled whorls and a more depressed spire than C. garethseetoi sp. nov. but has similar coiling and spire protrusion to C. oxleyana sp. nov.

Minjerribah is the second largest sand island in the world with a complex geological history. Connections to the mainland would have occurred during the glacial phases of the Quaternary. The island supports several differing vegetation communities ranging from wallum and heath to wet and dry eucalypt forest with small patches of rainforest occurring along the eastern edge at Eighteen Mile Swamp and on the western side of the island at Myora near Dunwich. Pinwheel snails have been recovered from both these rainforest patches, but the current species is known only from Myora.

Common name: Myora Pinwheel Snail.