Newnhamia fenestrata King, 1855

Díaz, Analia & Martens, Koen, 2018, Psammoecus simonis Grouvelle 1892, Zoological Studies 57 (10), pp. 1-13 : 7

Newnhamia fenestrata King, 1855

( Figs. 5 A-E)

Generic Differential Diagnosis (modified after De Deckker 1979a and George and Martens 2003): Valves rounded in lateral view, externally covered with polygonal elevation and rounded or pointed tubercles ( Figs. 5A, B, C, D ,). Ventral side of carapace ( Fig. 5E ) with anterior lip-like expansions of valve margins, near mouth; large part of ventral surface plate-like, set with 2-3 rows of rounded elevations and bordered by an elevated outer list. Each valve with prominent, rounded and opaque antero-dorsal eye-tubercles ( Figs. 5C, D ). Mandibular palp with 6 plumose internal setae and about 10 apical setae on terminal segment. Maxillula with 6 zahnborsten on third endite and two very large setae near first endite. T 2 without d-setae, penultimate segment divided, terminal segment with one long claw and two subapical setae, the latter unusually long in at least some species. T 3 with terminal segment separate from penultimate segment. Caudal ramus with distal seta.

Type locality and type material: Swamp 2 km east of Princetown, near Port Campbell, Victoria, Australia, 38°41'0"S 142°09'0"E: Neotypes (ò, ñ), NHMS - Xe 19841, 19842.

Material examined here: several dozen specimens, collected by P. De Deckker and K. Martens from a pond near Good Hope resort, near Canberra ( ACT /NSW - coordinates.: 35°6'26"S 148°51'670"E) on 25.03.2013.

Figures

Fig. 5. Newnhamia fenestrata (A-E) and Kennethia cristata (F-L) Newnhamia fenestrata. Females. (A) LV, int. view; (B) RV, int. view; (C) Cp, dorsal view; (D) Cp, left lateral view (E); Cp, ventral view. Kennethia cristata. Females. (F) Cp, right lateral view; (G) Cp, left lateral view; (H) Detail of muscle scars; (I) Cp, dorsal view; (J) LV, int. view; (K) RV, int. view; (L) Cp, ventral view. Scale bars: A-G, I-K = 250 µm, H = 50 µm.