Euryphyminae

Genera of Euryphyminae can now be identified using this key to the males:

An updated key to the Southern African genera of Euryphyminae Modified from Dirsh (1956)

1. Pronotum in prozona crest-like with deep incision at first transverse sulcus (Fig. 5)....................... Pachyphymus

– Pronotum without “camel-like” humped crests.............................................................. 2

2. Male cerci straight.................................................................................... 3

– Male cerci excurved................................................................................... 5

3. Lower margin of male cercus strongly dented, cerci straight, ending in an acute point (Figs. 3C, 4B, 7G).... Aneuryphymus

– Male cercus longer, ending in rounded or flattened surface..................................................... 4

4. Wings shortened, male cercus long and slender, strongly excurved and rounded with the angle between apex and base of cercus obstuse (Fig. 7I).............................................................................. Phymeurus

– Male cercus stump-like, not quite straight along bottom margin, apex square-like, does not form right angle with bottom margin (Figs. 3G, 4E, 7H)........................................................................... Rhodesiana

5. Male cercus relatively short, with very wide triangular base covered in coarse sensilla or setae, ending in simple pointed or blunt apex................................................................................................ 6

– Male cercus relatively longer, often upcurved with or without complex 3-dimensional shape.......................... 7

6. Male cerci short and slightly excurved, as long as its width, posterior margin of pronotum acute angular (Figs. 3B, 4A, 6F)............................................................................................ Euryphymus

– Integument with a sandy brownish colour, posterior margin of pronotum with corrugated edges (Figs. 3M, 4M, 6B).............................................................................................. Plegmapteroides

7. Male cercus apex folded into almost right angle relative to base. Apex pointed or blunt. Sclerotized lobe extends outwards at right angle juncture.................................................................................... 8

– Male cercus upcurved at various angles with apex from pointed to blunt or rectangular or triangular.................... 9

8. Male cercus slender towards apex, ending in blunt point; basal lobe at right angle (Figs. 3I, 4G, 6E)........ Platacanthoides

– Body small. Cerci slightly excurved, with obliquely truncate apex; angle between apex and base of cercus rounded rather than angular (Figs. 3K, 4L, 7A)................................................................. Calliptamuloides

9. Male cerci long, very slender with obliquely truncate apex (Figs. 3D, 4C, 7C); hind tibia curved.............. Rhachitopis

– Hind tibia straight, cercus long and curved but not very slender................................................ 10

10. Body smooth, dorsum of pronotum flat when viewed laterally, posterior margin of pronotum obtuse................... 11

– Upcurved cercus, body varies in rugosity but not very smooth; dorsum of pronotum may be tectiform, rounded or irrelgular but does not appear flat when viewed laterally................................................................ 12

11. Body small. Fastigium of vertex concave, lower margin of male cerci slightly dented, male cerci hook shaped (Fig. 7E)............................................................................................. Calliptamulus

– Male cerci with a narrowed base and wided but obliquely truncate apex (Figs. 3F, 4H, 6A) …................. Calliptamicus

12. Integument marked with patterns of brown, reddish-brown and grey; abdomen may be yellow; integument appears smooth and rather shiny......................................................................................... 13

– Greyish brown integument moderately rugose and matte coloured, not smooth and shiny............................ 14

13. Male cerci hook-shaped and prosternal process “pointy” (Figs. 3E, 4D, 7D)............................ Brachyphymus

– Male cerci narrowed at base, apex strongly widened and rounded (Figs. 3H, 4F, 6D). ……….............. Amblyphymus

14. Body robust; hind wings often brightly coloured. Cercus upcurved sharply, apex with complex 3-dimensional shape (Figs.3J, 4J, 5C).................................................................................... Plegmapterus

– Body slender, cercus forms 45⁰ angle with base; apex knob-like rounded (Figs. 3M, 4K, 7B).............. Plegmapteropsis