Phylogeny and systematic revision of the helicarionid semislugs of eastern Queensland (Stylommatophora, Helicarionidae)
Author
Hyman, Isabel T.
Author
Köhler, Frank
text
Contributions to Zoology
2019
2019-10-03
88
4
351
451
http://dx.doi.org/10.1163/18759866-20191416
journal article
268615
10.1163/18759866-20191416
6388d839-a72d-4598-a141-053897bfc900
1875-9866
8343061
1935CAD4-4BD5-450D-92AC-63D1A5D84CD9
Fastosarion superbus (
Cox, 1871
)
Figs. 6
,
7A
,
8A
,
9
Vitrina superba
Cox, 1871: 54
;
Pfeiffer, 1876: 23
;
Cox, 1887: 1063
, pl. 21, figs. 8–9.
Helicarion superbus
:
Tryon, 1885: 172
;
Hedley,
1888: 49;
Cox, 1909: 5
.
Helicarion (Fastosarion) superbus
:
Iredale,
1933: 37
.
Fastosarion superbus
:
Iredale, 1937: 9
.
Fastosarion superba
:
Smith, 1992: 232
;
Scott,
1995:71-74, figs. 1a-b, 3, 4, 5a; Hyman & Ponder, 2010: 47-49, figs. 6H–I, 7L, 8L, 9L, 12I, 13H, 17A– C;
Stanisic et al., 2010: 306–307
;
Stanisic, 2018
: fig. 4C.
Material examined
Types
:
Holotype
:
Status
unknown, whereabouts unknown, presumed lost (
Smith et al., 2002
,
Mt Dryander
,
Port Denison
, QLD).
Non-type material
: See
table 1
.
Diagnosis
External morphology
: Shell (fig. 7A) large (20.2–38.0 mm), golden amber, 3.2–3.8 whorls, subglobose with a very low spire, protoconch slightly raised. Body (fig. 8A)
60–75 mm
long, dark speckled greenish brownish grey, sole slightly paler with narrow with indistinct dark vertical stripes, faint spots on sides of tail. Mantle lobes moderately large; shell lappets large, finely pustulose, each with a single ridge; lobes and lappets darker than body with a pale border. Tail strongly keeled, slime network moderately strong.
Genital anatomy:
Genitalia (fig. 9) with swollen vagina, internally with faint longitudinal pilasters; bursa copulatrix short, duct indistinct, internally with longitudinal pilasters, bursa internally with transverse ridges. Penis very large, internally with one longitudinal pilaster, internal wall sculptured with fine diagonal lamellae arranged in a chevron pattern; approx. 60% contained in penial tunica. Penis longer than epiphallus; two arms of epiphallus approx. equal in length; epiphallus 2 equal in diameter to penis; epiphallus 1 narrower than penis; flagellum moderate length, slender.
Remarks
Fastosarion superbus
has been reported from Mt Dryander to Clarke Range in mid-eastern Qld (
Stanisic et al., 2010
). However, both the results of
Stanisic (2018)
and the present work have demonstrated that specimens attributed to
F. superbus
from the Clarke Range belong to
F. comerfordae
, limiting the range of
F. superbus
to just the
type
locality, Mt Dryander (fig. 6). This means that specimens figured by
Scott (1995)
for
F. superbus
actually belong to
F. comerfordae
.
Fastosarion superbus
can be distinguished from its congeners by its large size and dark (often greenish) colouration, and its finely pustulose shell lappets. Anatomically, it is most similar to
F. comerfordae
,
F. brazieri
and
F. paluma
, sharing with all three species a similar internal penial anatomy. Specimens of
Fastosarion comerfordae
have often been misidentified as
F. superbus
; however, while similar in size and body colour, they can be distinguished by their more orange brown coloration, the absence of a ridge on the left shell lappet, and the very dark vertical stripes along the edge of the sole.