Nysius (Ashlock, 1967)

Eyles, A. C. & Malipatil, M. B., 2010, Nysius caledoniae Distant, 1920 (Hemiptera: Heteroptera: Orsillidae) a recent introduction into New Zealand, and keys to the species of Nysius, and genera of Orsillidae, in New Zealand, Zootaxa 2484 (1), pp. 45-52 : 51

Key to the species of Nysius in New Zealand

1. Hemelytra with both semi-erect to erect setae, and short pubescence; with full double row of punctures along claval suture............................................................................................................................................................................. 2

- Hemelytra with one, only, of: semi-erect to erect setae, or short pubescence; with full single row of punctures following claval suture ..................................................................................................................................................... 3

2. Apex of scutellum rounded and upturned ( Fig. 1 ); vertex relatively flat, sunken below level of top of eyes; paramere ( Fig. 6−7 ) longer and less sharply curved ................................................................................................... caledoniae

- Apex of scutellum pointed and level; vertex convex, elevated above level of top of eyes ( Fig. 11 ); paramere ( Fig. 8 ) shorter and more sharply curved ......................................................................................................................... huttoni

3. Hemelytra without short pubescence, but with long erect or semi-erect setae only........................................ convexus

- Hemelytra with short pubescence, but without long erect or semi-erect setae.............................................. liliputanus

Figures

FIGURES 1−9. 1−4 Nysius caledoniae: 1, male (Pukekohe); 2, male (on left) and female (Bastion Point); 3, fifth instar showing dorsal markings on head and thorax (Bastion point); 4, another view of same to show abdominal markings (body length 3.63 mm, head width 1.14 mm). 5, Nysius huttoni fifth instar (mean body length 2.52 mm, mean head width 0.78 mm) [from Eyles (1960)]. 6−9 left paramere: 6, of N. caledoniae in situ dorsal view (Auckland Botanic Gardens); 7, same when turned slightly to the left; 8, of N. huttoni dorsal view (Waipukurau); 9, same one-quarter turn to the right (attachment at bottom left).

FIGURES 10−13. 10, Head, lateral view of Rhypodes clavicornis (F., 1794) male (Rimutakas) [from Eyles (1990)]; 11, same of Nysius huttoni male (Waipukurau); 12, spermatheca of Lepiorsillus tekapoensis Malipatil, 1979 [from Malipatil (1979)]; 13, spermatheca of Nysius convexus [from Eyles & Ashlock (1969)].