Hamma

Loudit, Sandrine Mariela Bayendi, Durante, Antonio & Susini, Antonio, 2014, Membracidae of Gabon: the genus Hamma Buckton, 1905 (Hemiptera: Auchenorrhyncha) with description of three new species, Zootaxa 3838 (3), pp. 323-346 : 327

Key to the species of the genus Hamma

1 Posterior pronotal process without terminal spine............................................................ 2

- Posterior pronotal process with a terminal spine............................................................. 3

2 Pronotum with reddish brown blunt tubercles................................................... franciscae n. sp.

- Pronotum with black thorn-like tubercles.......................................................... carlini n. sp.

3 Suprahumeral horns prominent, ending in a thorn............................................................ 4

- Suprahumeral horns absent or not prominent, apex blunt...................................................... 14

4 Posterior pronotal process quite slender in lateral view without well evident nodes.................................. 5

- Posterior pronotal process in lateral view with well evident nodes............................................... 6

5 Suprahumeral horns globose (better visible in frontal view)............................................ cinnameus

- Suprahumeral horns conical....................................................................... capeneri

6 Suprahumeral horns very large, posterior process heart-shaped in dorsal view............................... fabulosum

- Suprahumeral horns smaller, posterior process not heart-shaped in dorsal view..................................... 7

7 Pronotum with reddish tubercles.................................................................... nodosum

- Pronotum with black tubercles........................................................................... 8

8 Suprahumeral horns upturned.................................................................... brevicornis

- Suprahumeral horns laterad.............................................................................. 9

9 Posterior process with terminal node large and clearly rounded in dorsal view..................................... 10

- Posterior process with terminal node quite slender, not rounded in dorsal view.............................. robustum

10 Suprahumeral horns about half as long as pronotal width (dorsal view).......................................... 11

- Suprahumeral horns about 1/4 to 1/3 as long as pronotal width (dorsal view)...................................... 13

11 Posterior process V-shaped in lateral view between second and third node........................................ 12

- Posterior process straight in lateral view between second and third node..................................... rectum

12 Suprahumeral horns straight in dorsal view........................................................... grahami

- Suprahumeral horns curved backwards in dorsal view..................................................... heimi

13 Posterior process shorter than tegmina, suprahumeral horns with short, stout terminal spine............... boulardi n. sp.

- Posterior process as long as the tegmina, suprahumeral horns with slender terminal spine...................... spinosum

14 Posterior process in dorsal view with large terminal node............................................... ugandensis

- Posterior process in dorsal view with very small terminal node................................................. 15

15 Posterior process slender in lateral view................................................................... 16

- Posterior process quite strong in lateral view......................................................... pattersoni

16 Flanks of the pronotal helmet and thoracic pleurae covered by white pilosity; posterior process with lateral carinae... simplex

- No presence of white pilosity; posterior process without lateral carinae................................... pygmaeum