Emesinae

Tatarnic, Nikolai J. & Cassis, Gerasimos, 2011, The thread-legged bugs (Hemiptera: Heteroptera: Reduviidae: Emesinae) of Lord Howe and Norfolk Islands, Zootaxa 2967, pp. 21-43 : 22-23

Key to Emesinae species of Lord Howe Island

1. Macropterous........................................................................................ 2

- Apterous........................................................................................... 5

2. Brachypterous; posterior margin of wing upturned............................................ Emesopsis cirratus

- Not brachypterous; posterior margin of forewing not upturned.................................................. 3

3. Forewing with one closed cell (discal cell)................................................................. 4

- Forewing with two closed cells (discal cell + subbasal cell).................................... Tridemula metabates

4. Lateral margin of pronotum without carina; forewings with transverse RS vein joining M to outer margin, without mottled colouration............................................................................. Ploiaria chilensis

- Lateral margin of pronotum with carina; forewings lacking transverse vein joining M to outer margin, with mottled colouration............................................................................... Empicoris rubromaculatus

5. Forefemora without a large proximoventral process; metasternum not carinate...................... Pseudobargylia leai

- Forefemora with a large proximoventral process; metasternum carinate......................................... 6

6. Forefemora with proximoventral process bifid ( Fig. 2 C); forelimbs brown with irregular cream banding ( Fig. 1 ); length ~ 13 mm .................................................................... Atisne derelictus (lowland rainforest)

- Forefemora with proximoventral process not divided ( Fig. 2 B); forelimbs mostly concolourous orange-brown ( Fig. 1 ); length ~ 10 mm ................................................................... Atisne reidi (Mt. Gower summit)

Figures

FIGURE 1. Lateral photographs of females of Atisne derelictus (above) and Atisne reidi (below).

FIGURE 2. A, Atisne derelictus, head and pronotum. B, Atisne reidi, proximoventral forefemoral process. C – E Atisne derelictus: C, Proximoventral forefemoral process; D, paramere (redrawn from Wygodzinsky 1966: Fig. 20 I); E, aedeagus (redrawn from Wygodzinsky 1966: Fig. 20 J). F – I Emesopsis cirratus: F, Paramere; G, head and pronotum, lateral view; H, hemelytron; I, aedeagus. (Not to scale.)