Diprioninae

Hara, Hideho, 2016, The North African sawfly genus Prionomeion (Hymenoptera, Diprionidae), with a key to the Palaearctic genera of the subfamily Diprioninae, Zootaxa 4127 (3), pp. 537-552 : 540

Key to Palaearctic genera of Diprioninae

1. In dorsal view, mesoscutellar appendage including its anterior margin visible throughout along posterior margin of mesoscutellum ( Figs 5A, C ); anterior end of lateral ocellus located anterior to level of posterior end of median ocellus ( Fig. 2C ); malar space narrower or wider than width of median ocellus; claws with inner tooth...................................... 2

- In dorsal view, mesoscutellar appendage concealed below mesoscutellum entirely or except for narrow apex, rarely visible except for most of its anterior margin; anterior end of lateral ocellus located anterior or posterior to level of posterior end of median ocellus; malar space about as long as or wider than width of median ocellus; claws with or without inner tooth.... 4

2. Abdomen dorsally distinctly microsculptured; posterior hind-tibial spur shorter than first hind-tarsomere exclusive of pulvillar pad....................................................................................... Prionomeion

- Abdomen dorsally polished; if abdomen weakly microsculptured, posterior hind-tibial spur as long as or longer than first hindtarsomere............................................................................................ 3

3. In female antenna, middle flagellomeres each with two ramus; posterior hind-tibial spur often as long as or longer than first hind-tarsomere............................................................. Nesodiprion in part (most species)

- In female antenna, middle flagellomeres each with one ramus and with small convexity on inner side; posterior hind-tibial spur shorter than first hind-tarsomere.................................................................. Neodiprion

4. Claws with inner tooth................................................................................. 5

- Claws without inner tooth. [Anterior end of lateral ocellus located anterior to level of posterior end of median ocellus; hind wing with section of vein 1A between crossveins a and cu-a less than 1.3 × width of cell 1A; abdomen dorsally polished or microsculptured.]............................................................................ Microdiprion

5. Abdomen dorsally microsculptured; anterior end of lateral ocellus located anterior to level of posterior end of median ocellus; hind wing with section of vein 1A between crossveins a and cu-a often more than 1.5 × width of cell 1A............... 6

- Abdomen dorsally polished; anterior end of lateral ocellus located slightly behind level of posterior end of median ocellus; hind wing with section of vein 1A between crossveins a and cu-a at most 1.5 × width of cell 1A............................................................................................ Nesodiprion in part (only N. shinoharai )

6. Female flagellum in lateral view abruptly narrowing at apex and dorsally serrate; male flagellum biramose except for apical five to six flagellomeres and most basal one....................................................... Macrodiprion

- Female flagellum in lateral view gradually narrowing toward apex and dorsally scarcely serrate; male flagellum biramose except for apical one to three flagellomeres and most basal one................................................ 7

7. Metascutellum length 0.8 × cenchrus width or longer................................................... Diprion

- Metascutellum length 0.7 × cenchrus width or shorter................................................... Gilpinia

Figures

FIGURES 5 A – F. Mesoscutellum and metanotum in Prionomeion gaullei (A – B, female, holotype) and P. maghrebense sp. nov. (C – F, female, holotype). A, C, Dorsal view; B, D, dorsolateral view; E, lateral view; F, posterodorsal view; C – D, SEM; c = cenchrus, mtsl = metascutellum.

FIGURES 2 A – I. Head in Prionomeion gaullei (A – D, female, holotype; E – F, male) and P. maghrebense sp. nov. (G – H, female, holotype; I, male, paratype). A, Dorsal view; B, dorsal part, anterior view; C, E, G, I, dorsal part, anterolateral view; D, F, H, ventral part, anterior view.