Review of South African Euryphyminae
Tshililo, Precious
Zootaxa
2020
2020-07-27
4820
1
70
104
8NKVN
[283,470,942,968]
Insecta
Acrididae
Animalia
Orthoptera
31
101
Arthropoda
subFamily
Euryphyminae
An updated key to the Southern African genera of Euryphyminae Modifiedfrom 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