Stanisicarion wolvi, Hyman & Köhler, 2019

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 : 445-448

Stanisicarion wolvi sp. nov.

Figs. 33 , 34C , 39E–F , 40

Etymology

For Mt Wolvi , the type locality; noun in apposition.

Material examined

Types: Holotype: AM C.581912 ( Gympie District , Mt. Wolvi, Salmon Lookout , 26° 10' 41" S, 152° 52' 21" E, coll. 04 Aug 2011, J. Ferguson).

Paratypes: AM C.478035 (same data as holotype) .

Non-type material: See table 1 .

Description

External morphology: Shell (fig. 34C) large (20.5–20.7 mm), golden amber, 3.9–4.4 whorls, subglobose with a very low spire. Body 40–45 mm, colour (in alcohol) uniform grey, mid field of sole white, shell lappets and mantle lobes grey with few black spots. Shell lappets and mantle lobes moderately large, lappets heavily pustulose, lobes finely pustulose. Dark line along mantle edge. Tail weakly keeled at tip, slime network prominent.

Genital anatomy: Genitalia (figs. 39E–F, 40) with moderately long vagina, slightly swollen; bursa copulatrix moderately long, duct distinct, bursa elongate oval. Penis long, slender, narrowing distally, internally with fine, numerous pustules arranged in longitudinal rows; 40% of penis contained in penial tunica. Epiphallus slightly longer than penis; epiphallus enters penis through a very short, broad verge, pointed at tip; epiphallus 2 longer than epiphallus 1; epiphallic caecum of moderate length; flagellum moderately long, slender. Spermatophore with a very long, narrow tail-pipe sculptured with a single spiraling row of small teeth.

Remarks

Stanisicarion wolvi (referred to above as ‘ Helicarionidae sp. Mt Wolvi’) is known only from Mt Wolvi near Gympie in southeastern Qld (fig. 33). It is closely related to S. aquila , which is not recorded from Mt Wolvi but is found only a short distance to the south in Kenilworth. However, S. wolvi is larger than S. aquila and while it is only known from preserved specimens, appears to differ in its uniform grey colouration with fewer spots on the shell lappets. Stanisicarion wolvi was found buried in the soil under rocks in notophyll vine thicket.

Figures

FIGURE 33 Distribution of Clade C species. ▲ = S.aquila, ● = S. freycineyti, ◻ = S.wolvi.

FIGURE 34 Shells of Stanisicarion. A. Stanisicarion freycineti, MO70449. B. Stanisicarion aquila, MO49825. C. Stanisicarion wolvi sp. nov., AM C.581912.Scale bar 5 mm.

FIGURE 39 Stanisicarion spermatophores (Clade C).A–B. S.aquila, MO77158.C–D.S.aquila, AM C.269856.E–F. S.wolvi, AM C.581912.

FIGURE 40 Genitalia of S.wolvi sp. nov., AM C.581912,Wolvi Lookout, Mt Salmon. A. Reproductive system.Arrow shows the junction of the penis and epiphallus.B.Penis interior. C. Downloaded Spermatophorefrom Brill.. com Scale10/17 bars /20221 12 mm:50:28PM (A–B), 2 mm (C). via free access