Fastosarion mcdonaldi Stanisic, 1993

Hyman, Isabel T. & Köhler, Frank, 2019, Phylogeny and systematic revision of the helicarionid semislugs of eastern Queensland (Stylommatophora, Helicarionidae), Contributions to Zoology 88 (4), pp. 351-451 : 430

publication ID	https://doi.org/ 10.1163/18759866-20191416
DOI	https://doi.org/10.5281/zenodo.8366913
persistent identifier	https://treatment.plazi.org/id/03F32A40-FF96-B14F-5367-9F26F6B7FC24
treatment provided by	Felipe
scientific name	Fastosarion mcdonaldi Stanisic, 1993
status

Treatment

Fastosarion mcdonaldi Stanisic, 1993 View in CoL View at ENA

Figs. 18 View FIGURE 18 , 19H View FIGURE 19 , 20G View FIGURE 20 , 22G–H View FIGURE 22 , 28 View FIGURE 28

Eungarion mcdonaldi Stanisic, 1993: 28 View in CoL , figs. 1a–b, 2 View FIGURE 2 , 3a–f, 4a–c; Hyman & Ponder, 2010: 56, figs. 6L–M, 13K, 14E–F, 18C, 19C, 21C; Stanisic et al., 2010: 316–317, 333; Stanisic, 2018: fig. 4F.

Material examined

Types: Holotype: QM MO43309 ( Dalrymple Heights , Eungella National Park, 1000 m, ME QLD).

Paratypes: QM MO43310 .

Non-type material: See table 1 View TABLE 1 .

Diagnosis

External morphology: Shell (fig. 19H) small (11.3–11.6), orange amber, 3.2–3.5 whorls, flattened, thin, base uncalcified, membraneous. Shell sculpture very faint on protoconch, obsolete on teleoconch. Body (fig. 20G) 28–32 mm, reddish brown. Shell lappets and mantle lobes large with pigmented pustules, lappets joined on both sides by a narrow collar.

Genital anatomy: Genitalia (figs. 22G–H, 28) with medium length vagina, very swollen; bursa copulatrix moderately short, duct distinct, bursa elongate oval. Penis long, swollen proximally, internally with 2–4 longitudinal pilasters, internal wall pustulose; 60% of penis contained in penial tunica. Epiphallus approx. equal length to penis, enters penis through small rounded verge; epiphallic caecum of moderate length; flagellum short, slender. Spermatophore simple.

Remarks

Fastosarion mcdonaldi is restricted to the Clarke Ranges in Mideastern Qld, usually found above 900 m altitude (fig. 18). Several other semislugs are found in this region, including F. aquavitae , F. comerfordae , F. ephelis and F. tuljun . Fastosarion mcdonaldi can be distinguished from F. aquavitae , F. comerfordae and F. ephelis by its more flattened, reduced shell and smaller size, and from F. tuljun by its larger size, pustulose shell lappets and more reduced shell with a membraneous base.