Manerogeneia maneroo (J. L. Barnard 1972)

Pontogeneiella maneroo

DIAGNOSIS (including characters of generic value).—Rostrum of medium length, thick, but almost becoming acute apically; eye of medium size, composed of large ommatidia, with weak core of purple pigment lateral cephalic lobe obtusely and softly rounded, defined below by rounded excavation, anteroventral corner of head rounded; antenna 1 about 60 percent length of body, antenna 2 only 85 percent as long as antenna 1, peduncles short, accessory flagellum absent but marked by setose bulge on inner margin of article 3 of peduncle on antenna 1, articles of flagella on either antenna even or nearly so, on middle of antenna 1 flagellum with alternate articles bearing 1 aesthetasc epistome rounded in front, upper lip rounded below from anterior view; mandibular molar small but columnar and slightly cup shaped apically, heavily triturative, and each molar bearing medium ragged seta, left lacinia mobilis normal and serrate, right composed of 2 spines basally fused, 1 spine bearing weak cusp, right spine row with 2 main spines, left with 3 main spines; palp articles 2–3 subequal to each other in length, article 1 naked, article 2 bearing 1–2 setae, article 3 with 1 medium apical spine and 1 stout apical spine, inner edge with about 7 spines on distal half, 1 basofacial seta, article 3 scarcely falcate; lower lip with inner lobes clearly outlined but thin and tightly appressed to outer lobes, mandibular lobes unevenly rounded and smooth; inner plate of maxilla 1 fully lined on medial margin, with about 9 large setae and 1 giant apical seta, outer plate with 9 spines, some with very long serrations, palp 2-articulate, article 2 elongate, right apex with teeth, left with articulate spines; inner plate of maxilla 2 with strongly submarginal oblique row of about 6 setae, plus setae on medial margin; inner plate of maxilliped with 2 apicomedial spines, 1 simple, 1 plumose, then small lateral gap and another smooth spine, palp ordinary; coxae 1–4 ordinary, posterior lobes of coxae 5 and 6 weakly to strongly larger than anterior lobes; gnathopods small, first slightly larger than second, fifth articles with scarcely produced long flat posterior margins bearing heavy spines, hands 1.3 and 1.15 times as long as article 5 respectively on gnathopods 1–2, hands rectangular, palms ordinarily oblique, dactyls with about 3 recumbant serrations on inner edge, pereopods 1–2 slender, locking spines paired and bearing 4 other setae in group, locking spines on pereopods 1–2 hooked but straight or slightly curved on pereopods 3–5, dactyls of all pereopods similar, bearing large inner protrusion slightly thicker than nail, plus sharp seta proximal to protrusion and facial seta, plus about 5 accessory setules on outer marginal faces (3 outer, 2 inner on pereopods 1–2, reversed on pereopods 3–5) see Figure 113P for proportions of pereopods, not diagnostic as not highly distinct from other species in genus; uropods 1–2 reaching equally, and slightly surpassing, uropod 3; outer rami of uropods 1–3 shortened, uropod 3 with inner row of heavy spines on peduncle, outer ramus with about 3 dorsal spines, inner ramus with about 4 spines on inner edge, 2 on outer, no setae; telson linguiform, entire, slightly longer than peduncle of uropod 3, bearing setules dorsally, and slight apical trifoliation marked with 2 setules; no dorsal teeth; pleonal epimera 1–2 softly rounded behind but becoming flat near weakly produced posteroventral corners, epimeron 3 softly rounded behind, posteroventral corner bearing weak cusp, epimera 1–2 with lateral ridge, ventral margins with 1, 1, and 3 spines respectively. Female about 3.3 mm long.

MALE (about 2.2 mm long).—Like female, but gnathopods slightly larger and difference in size between gnathopods 1 and 2 slightly more exaggerated. Possibly terminal males not yet found.

FORMULA OF AESTHETASCS (on antenna 1 of female, no bulges, no calceoli).—1–1-1–0-1–0-1–0-1–0-1–0-1–0-1–0-1–0-1–0-1–0-(half-sized aesthetasc)-0–0-0–0-0-(terminus).

HATCHED JUVENILE.—Recognizable as this species by dactyls of pereopods, size approximately 0.80 mm long.

HOLOTYPE.—WAM, female, 3.4 mm.

TYPE-LOCALITY.—JLB Australia 3, Sugarloaf Rock, Cape Naturaliste, Western Australia, intertidal, wash of common seaweeds, 1 September 1968.

DISTRIBUTION.—Southwestern Australia and South Australia, intertidal.

Gondogeneia, new genus

TYPE-SPECIES.—Atylus microdeuteropus Haswell (1880a).

DIAGNOSIS.—Lower lip lacking inner lobes; telson cleft, lacking large spines on apices; maxilla 2 bearing no submarginal setae but typically bearing 2–3 enlarged mediomarginal setae on inner plate plus occasional small setae between them; accessory flagellum present or absent, usually article 3 of peduncle on antenna 1 bearing lump indicating fused accessory flagellum; setae on inner plate of maxilla 1 confined mainly toward apex; rostrum short and blunt.

ADDITIONAL CHARACTER (not known for many genera in this complex and not necessarily occurring in all species of Gondogeneia).—Males bearing complex calceoli composed of 3 or 4 saucers in tandem.

Some species of this genus have gnathopod 1 significantly enlarged.

LIST OF SPECIES.—

microdeuteropa (Haswell, 1880a), type-species

danai (Thomson) (see J. L. Barnard, in press)

species (part of P. danai identified by J. L. Barnard, in press)

rotorua (J. L. Barnard, in press)

antarctica (Chevreux, 1906)

simplex (Dana, 1853)

subantarctica (Stephensen, 1938)

bidentata (Stephensen, 1927)

tasmaniae (Thomson, 1893)

?georgiana (Pfeffer, 1888)

?gracilicauda (Schellenberg, 1931)

?macrodon (Schellenberg, 1931)

?ushuaiae (Schellenberg, 1931)

?thistanensis (K. H. Barnard, 1932)

A key to the species of Gondogeneia and Tethygeneia follows the description of the latter new genus.