Pamphagus

Benkenana, Naima & Massa, Bruno, 2017, A new species of Pamphagus (Orthoptera: Pamphagidae) from Algeria with a key to all the species of the genus, Zootaxa 4254 (1), pp. 102-110 : 107

Key to species of the gen. Pamphagus

(cf. also Table 1 and Figs 1−56)

This key works rather well for males, while if only females without males are available, their identification may result more problematic.

1. Pronotum in males and females raised and protruding backwards and forwards, laterally compressed ( Figs 1−6, 11−16, 23−34 ); ratio length/height of pronotum mostly higher than 1.0. Tansverse sulcus interrupting or not interrupting the pronotum keel.................................................................................................2

1’. Pronotum less raised and protruding, laterally not or scarcely compressed, mainly in males, less in females ( Fig. 7−10, 17−22); ratio length/height of pronotum mostly lower than 1.0. Transverse sulcus (especially in males) interrupting the pronotum keel, which before the sulcus is just higher than after it.............................................................7

2. Transverse sulcus in males and in some females interrupting the pronotum keel (not always in females), but lateral sulcus always evident along the lobes of the pronotum, both in males and females. Pronotum protruding mainly anteriorly, less posteriorly. Krauss's organ smooth, roughly streaked, or finely streaked. Marbled coloration (also evident in old specimens). Teguments wrinkled or smooth...............................................................................3

2’. Transverse sulcus not interrupting the pronotum keel and scarcely evident in the central part of its lateral lobes. Evenly green, with the exception of the upper edge of the pronotum, metanotum and tergites, generally cream (old specimens may be bleached, but they show an even coloration, not marbled). Pronotum protruding both anteriorly and posteriorly. Metanotum and first two tergites raised as a keel. Mostly smooth teguments. Krauss’s organ roughly streaked in both sexes. Phallic complex not much curved ( Fig. 39 ), epiphallus with many small spines arranged in two rows, aedeagus long, with a regular profile ( Fig. 47 ). Central-northern Algeria............................................................. P. elephas (L.)

3. Larger size (length of body in males 50.0‾70.0, in females 64.0‾94.0). Cerci as long as wide at the base. First tergites show a small keel. Krauss’s organ roughly streaked in both sexes. Phallic complex not much curved ( Fig. 41 ), epiphallus with many pseudolophi arranged in two or three rows, aedeagus just laterally enlarged, with regular profile ( Fig. 48 ). Green to brownishgrey, always marbled. Western Algeria and eastern Morocco....................................... P. caprai Massa

Figures

FIGURES 23 – 28. Lateral view of the head and pronotum of males of Pamphagus milevitanus n. sp. (23) and the most related species (24 ‾ 28).

FIGURES 29 – 34. Lateral view of the head and pronotum of females of Pamphagus milevitanus n. sp. (29) and the most related species (30 ‾ 34).

FIGURES 37 – 46. Lateral view of the phallic complex of P. milevitanus n. sp. (37) compared to that of other species of the genus (38 ‾ 46).

FIGURES 47 – 56. Back view of the apex of aedeagus of P. milevitanus n. sp. (47) compared to that of other species of the genus (48 ‾ 56).