Amplirhagada fitzpatricki, Köhler & Johnson, 2012

Köhler, Frank & Johnson, Michael S., 2012, Species limits in molecular phylogenies: a cautionary tale from Australian land snails (Camaenidae: Amplirhagada Iredale, 1933), Zoological Journal of the Linnean Society (Zool. J. Linn. Soc.) 165 (2), pp. 337-362 : 352

AMPLIRHAGADA FITZPATRICKI SP. NOV.

FIGURES 7Q–R , 12 , 13

Amplirhagada montalivetensis – Solem, 1981: 305– 306, fig. 70d–f (not Helix (Hadra) montalivetensis Smith, 1894 ).

Type locality: Western Australia, Kimberley, Bonaparte Archipelago, West Montalivet Island (14°17′ 55.2″S, 125°13′17.3″E) .

Material examined ( Table 1): Holotype WAM S42937 (dissected specimen) . Paratypes WAM S33028 (four preserved specimens), WAM S33008 (seven preserved specimens), WAM S33010 (eight preserved specimens), AM C.470985 (two preserved bodies) .

Etymology: For Jeremy Fitzpatrick, who collected the material and instigated the study in the Bonaparte Archipelago; noun in the genitive case.

Description: Shell ( Fig. 7Q–R ) broadly conical, with moderately elevated spire; periphery rounded to slightly compressed, transparent ( Table 3). Teleoconch smooth with regular, fine axial ribs on upper sectors of whorls (less prominent on last whorl). Umbilicus 80–100% concealed by columellar reflection. Background colour light brownish crème with whitish base, with rather thin brown sub-sutural and mid-whorl bands, rarely bands blending into each other, covering upper part of shell in light brown suffusion; lip colour white ( Table 4). Aperture simple, well slightly expanded, weakly reflected, with welldeveloped to weak basal node. Genital anatomy ( Figs 12 , 13 ). Penis tubular, long, straight; vas deferens entering penial sheath apically, penial retractor muscle short; penial verge moderate in length (1/4 length of penial chamber), pointed; inner penial wall with long, broad, regularly corrugated main pilaster, comprising more than posterior half of penial wall, segments supporting three rows of little hooks; posteriorly surface of inner penial wall with radial corrugations in continuation of main pilaster segmentation, with two indistinct corrugated longitudinal pilasters comprising entire length of penial wall; anterior end of inner penial with dense, distinct, roundish pustules. Vagina short (much shorter than penis), inflated; bursa copulatrix long, tubular, extending to anterior end of spermoviduct, with strongly inflated head.

Comparative remarks: This species was mistaken for A. montalivetensis by Solem (1981). For comparison with A. montalivetensis and A. ambulator see above; species differing most conspicuously in details of sculpture and overall size. Typical for the present species is the transparent shell with axial ribs on upper sector of whorls.

Distribution: West Montalivet Island only ( Fig. 6 ).

Figures

Figure 6. Map of the study area with known occurrences of Amplirhagada species as documented by Solem (1981) and Köhler (2010a, 2011a, c). Triangles (in italics): Localities of known species: and, A. anderdonensis; bas, A. basilica; ber, A. berthierana; boo, A. boongareensis; buf, A. buffonensis; cam, A. camdenensis; cof, A. coffea; dec, A. decora; dis, A. discoidea; epi; A. epiphallica; for, A. forrestiana; gem, A. gemina; gib, A. gibsoni; glo, A. globosa; int, A. intermedia; inu, A. inusitata; kes, A. kessneri; kim, A. kimberleyana; lam, A. lamarckiana; lin, A. lindsayae; mon, A. montalivetensis; pue, A. puescheli; reg, A. regia; sph, A. sphaeroidea; tri, A. tricenaria; uwi, A. uwinsensis; via, A. vialae; yor, A. yorkensis. Circles (in bold): material studied herein: alb, A. albertiana sp. nov. (Albert Island); emo, A. ambulator sp. nov. (East Montalivet Island group); lul-wip, A. gemina; nma, A. intermedia (North Maret Island); prr, A. tealei sp. nov. (Mainland View, Prince Regent Reserve); sb, A. imperialis sp. nov. (Boongaree Island); sma, A. intermedia (South Maret and Natfi Island); tur, A. turbinensis sp. nov. (Turbin island); wal, A. montalivetensis (Walker Island); wmo, A. fitzpatricki sp. nov. (West Montalivet Island).

Figure 7. Shells of CLADES 1 and 2 (columns showing front view, top view, basal view each). A–C, Amplirhagada montalivetensis (Smith, 1894). A, lectotype of Helix (Hadra) montalivetensis Smith, 1894 NHMUK 1890.12.30.138–142, Montalivet Island. B, paralectotype AM C33896. C, WAM S33021 (Walker Island). D–H, Amplirhagada ambulator sp. nov. D, paratype WAM S33019 (East Montalivet Island). E, East Montalivet Island (WAM S33018). F, Patricia Island (WAM S33027). G, East Montalivet Island (WAM S42934). H, Don Island (WAM S33025). I–P, Amplirhagada intermedia (Solem, 1981). I, North Maret Island (WAM S42940). J, North Maret Island (WAM S33007). K, North Maret Island (WAM S33007). L, North Maret Island (WAM S42939). M, South Maret Island (WAM S42943). N, South Maret Island (WAM S42942). O, South Maret Island (WAM S42941). P, Natfi Island (WAM S42944). Q–R, Amplirhagada fitzpatricki sp. nov. paratypes West Montalivet Island (WAM S33010). S, Amplirhagada turbinensis sp. nov. paratype, Turbin Island (WAM S42946). T–U, Amplirhagada berthierana Köhler, 2010a, Berthier Island. T, paratype WAM S33029. U, holotype WAM S34611. V, Amplirhagada albertiana sp. nov. paratype Albert Island (WAM S33000). Note that foot tissue protrudes from some of the shells. Scale bar = 10 mm.

Figure 12. Genital anatomy of Amplirhagada fitzpatricki sp. nov. holotype WAM S42937 (West Montalivet Island). Abbreviations: ag, albumen gland; at, atrium; bc, bursa copulatrix; hd, hermaphroditic duct; p, penis; rm, penial retractor muscle; so, spermoviduct; vd, vas deferens; vg, vagina. Scale bar = 10 mm.

Figure 13. Penial anatomy of Amplirhagada fitzpatricki sp. nov. holotype WAM S42937 (West Montalivet Island). Abbreviations: mp, main pilaster of inner penial wall; pv, penial verge; sh, penial sheath. Scale bar = 3 mm.