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Acridoidea of South-West Angola (Orthoptera)

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Acridoidea of South-West Angola (Orthoptera) Acridoidea of south-west Angola (Orthoptera) BY JOYCE B. MASON. (London). INTRODUCTION. This paper is a contribution to descriptions of the fauna of Acri- doidea of Angola. It relates to a collection of 407 specimens for- warded by Dr. José Passos de Carvalho of the Instituto de Investi- gaçäo Agronómica de Angola. A complete list for the region is given with additional notes in some cases. The specimens were mainly caught in south - west Angola or west Angola in various cultivations. 011e of the main features of the collection was the bright colouration of the hind wings, the inner side of the hind femur and the hind tibiae. Some unusual colouration combinations were noted. The terminology used for the figures of genitalia is similar to that in Dirsh (1956). The terminology used for describing the 9 genitalia was that of Slifer (1939) and Agarwala (1952). PYRGOMORPHIDAE. TAPHRONOTINAE. 1. Phymateus sp. (nymphs). Localities : Chianga, 26 - III - 1953, 1 8 (Mandes da Ponte) : Ouibala, 22 - IV - 1969, 1 9 (P. Carvalho). 9. Taphronota calliparea (Schaum, 1853). Poecilocerus calliparea Schaum, 1853. Ber. Verh. Akad. Wiss. Berlin, n.° 2, pág. 778 (Kevan, 1962: 230). 92 JOYCE B. MASON 2 e j')1 "94-4 •16 23 1,4•Ian9e 19 • • 21 12 12 24 11wSilva Porto e w-113 5 • 1 Lie Nova Lisboa 71 3 18 14 xSa da Bandeira • 17 6 16 22 15 Map I.—Map of Angola, showing localities where the material was collected 1) Alto Capaca ; 2) Bragança ; 3) Caála ; 4) Cacuso ; 5) Caimbambo ; 6) Caiundo ; 7) Calondo ; 8) Cangombe ; 9) Canhoca ; 10) Cassequel ; 11) Ceilunga ; 12) Cela ; 13) Chianga ; 14) Cruz ; 15) Cunene ; 16) Gangassol ; 17) Humpata ; 18) Lufefena ; 19) Muquitixe ; 20) Nova Lisboa ; 21) Quibala ; 22) Roçadas ; 23) Salazar ; 24) Soque. «ACRIDOIDEA» OF SOUTH - WEST ANGOLA 93 Poecilocerus porosus Stäl, 1855: 352 (I. Bolivar, 1884: 475). Taphronota subverrucosa Saussure, 1899: 645, 646 (Kevan, 1962: 230). Taphronota dimidiata I. Bolivar, 1904: 395, 397 (Sjöstedt, 1929: 12). Taphronota amaranthina I. Bolivar, 1904: 395, 400 (Kevan, 1962: 230). Taphronota calliparea var. poultoni I. Bolivar, 1904: 394, 397 (Kevan, 1955: 78). Pyrgophyma sabaudum Giglio - Tos, 1907: 3 (Kevan, 1963: 108). Taphronota vicina Sjöstedt, 1929: 13 (Kevan, 1955: 78). Taphronota calliparea var. imniaculata Sjöstedt, 1929: 13 (Kevan, 1955: 78). Taphronota cincta (Burmeister, 1838: 623) (Kevan, 1962: 230). Localities : Muquitixe, 13 - II - 1971, 2 8 8 (J. Manuel) : Chian- ga, 28 - IV - 1968, 1 y (P. Carvalho). This species damages Mucuna stans Welw. ex Bak. —a decorative legume—. The subspecies, forms, and distribution of Taphronota calliparea are rather uncertain. For these reasons I have treated the present material at specific level only. The basic synononymy is given also at specific level. The full synonymy of the subspecies and forms are given by Kevan (1974) in his revision of the genus Taphronota. PYRGOIVIORPHINAE. 3. Laufferia chloronota (I. Bolivar, 1889). Ochrophlebia chloronota I. Bolivar, 1889. J. Sci. Lisb., t. I (2), pág. 111 (I. Bolivar, 1904: 445, 446). Localities : Ceilunga, 22 - IX - 1971, 4 81/4 , 2 9 9 . 4. Scabropyrgus scabrosus (I. Bolivar, 1889). Ochrophlebia scabrosa I. Bolivar, 1889. J. Sci. Acad., Lisb., t. I (2), pág. 112. Tanita scabrosa (I. Bolivar, 1889: 112) (I. Bolivar, 1904: 446). Scabropyrgus scabrosus (I. Bolivar, 1889: 112) (Kevan, 1962: 127). Localities : C. E. Cela, 11 - X - 1968, 1 , 1 9 ; C. E. Ceilun- ga, 18 - VI - 1970, 1 9 (j. Correia) ; Ceilunga, 9 - IX - 1971, 1 9 (L. Amorim). 94 JOYCE B. MASON 5. Pyrgomorpha granulata Stäl, 1875. Pyrgontorpha granulata Stal, 1875. Bih. K. Svenska Vet. - Akad. Handl., t. III (14), pág. 26. Pyrgontorpha angolensis I. Bolívar, 1889: 108 (Dirsh, 1966: 84). Pyrgoniorpha sandeni Krauss, 1901: 287 (Uvarov, 1929: 67). Pyrgoinorpha cylindrica I. Bolívar, 1904: 452, 453 (Dirsh, 1966: 84). Localities : Muquitixe, 5 - V - 1971, 1 , 1 9 (Correia) ; Chian- ga, 12- III - 1971, 1 (Barradas ; Alto Capaca, 11 - XII - 1969, 3 y y (José Maia): Chianga, 27 - IV - 1964, 1 9 (L. Amorim), 12 - V - 1970, 1 8 (Patricio e Elias), 8 - V - 1970), 1 (Patricio e Elias), 24- XI - 1969, 1 y (José Maia), 31 - VII - 1969, 1 9 (P. Car- valho), 6- VIII - 1968, 2 (Gastäo) ; Humpata, 25 - IX - 1970, 1 9 ( J. Manuel). This species attacks Gossypium sp , Lycopersicum esculentum and Solanum guitdense. Eilenbergia gen. nov. Medium size, slender. Integument rugose and granulose. Antenna shorter than head and pronotum together, narrow ensiform. Head elongate narrow, acutely conical. Fastigium of vertex transversely slightly convex, narrowing to rounded apex ; fastigial areolae distinct with short lateral carinulae ; median carinula sharp, well developed ; frons strongly obligue and incurved ; frontal ridge narrow with deep sulcus aboye ocellus and with sharp lateral carinulae which expand aboye antennae, shallow sulcus below ocellus with obtuse lateral carinulae. Pronoturn with flattened dorsum ; median carina sharp linear ; lateral carinae in prozona sharp, in metazona indistinct ; two sulci interrupting median carina ; metazona much shorter than prozona ; posterior margin obtuse angular. Lower margin of lateral lobe obligue; posterior comer pointed. Prosternal process widely subconical, obtuse. Mesosternal interspace as wide as its length ; distant from metasternal interspace, which is transverse. Tegmina and wings fully developed, extending well beyond end of abdomen. Hind femur narrow, slender ; external apical spine of hind tibia absent. Arolium large. Supra - anal plate elongate angular. Cercus straight, narrowing to apex. Subgenital plate short subconical with obtuse apex. «ACRIDOIDEA» OF SOUTH - WEST ANGOLA 95 Subgenital plate trilobate. Ovipositor of moderate length, external with robust curved valves ; lower valve with small, angular lateral projection ; outer edge of upper valve slightly serrated. Type species Eilenbergia sagitta nov. sp. This genus is related to Pyrgomorpha and Tanita, though more It closely related to Pyrgomorpha, being more slender than Tanita. differs from both genera in the shape of the pronotum ; the dorsum in the is more flattened, the lateral carinae are sharply developed anterior half of the prozona, are parallel then slightly diverging towards the metazona where they are more or less obliterated. In poorly Pyrgomorpha they are irregular and obtuse ; in Tanita they are developed but noticeable in front of the first sulcus of the prozona margin in and in the posterior end of the metazona. The posterior Eilenbergia is obtuse angular but acute, while in Pyrgomorpha and of the Tanita it is widely rounded or rounded. The lower margin anterior part slightly lateral lobe of the pronotum is oblique with the shorter than the posterior part, the posterior comer is pointed, with the point projecting backwards. This genus and species has been named in the honour of in writing this Dr. M. D. Eilenberg whose help and encouragement paper is greatly appreciated. 6. Eilenbergia sagitta nov. sp. (Figs. 1 - 11). Holotype 8 , Caála, Angola (British Museum [Natural History]). holotype : Medium size, slender. Integument finely rugose and granulose. Fastigium of vertex slightly longer than its width apex tubercles rounded. Head as long as pronotum. Postocular row of numerous, comparatively small. Dorsum of pronotum finely granu- lose ; lateral carina in prozona sharp, diverging gradually towards prozona ; lower margin metazona, almo st parallel in anterior part of angle with small pointed of lateral lobe obligue: posterior lower angular, subacute. projection ; posterior margin of metazona obtuse tegmen- Tegmina and wings extending well beyond end of abdomen ; with pointed apex ; margin of wing anterior to vena dividens, pointed. Last ab- Lower lobe of hind knee on both sides angular subacute. 96 JOYCE B. MASON nov. gen. and nov. sp., 8 : 1) head and Figs. 1 - 11.—Eilenbergia sagitta lateral view ; 2) end of abdomen, dorsal view ; 3) the same, pronotum, dorsal view ; view ; 4) meso- and metanotum, ventral view ; 5) phallic complex, dorsal view ; 7) endophallus, lateral view ; 8) epiphallus, dorsal 6) the same, lateral dorsal view. 9 : 9) end of abdomen, ventral view ; 10) subgenital plate, view ; 11) spermatheca. «ACRIDOIDEA» OF SOUTH - WEST ANGOLA 97 dominal tergite with posterior margin rounded on sides. Cercus straight with lower part slightly expanded, almost reaching end of supra - anal plate, narrowing to subacute apex. Subgenital plate obtusely conical. Phallic complex Apical part of valves of penis short, in profile strongly upcurved, narrowing towards apex, which is slightly ex- panded, apical sheath of penis (AV aedeagal valves, Akbar and Kevan, 1963) is attached to sclerotized membrane which is analogous to arch of cingulum of Acrididae (Dirsh, 1956), which is equivalent to the pseudoarch of Akbar and Kevan (1963) ; apical sclerotization of ectophallus (valves of cingulum, Dirsh, 1956) not reaching apex of penis, wide, with abruptly strongly sclerotized dentate apex ; basal part of valves of penis moderately short, greatly widening at rounded proximal ends, with apices curving towards each other ; middle part of valves wide ; ectophallus pear - shaped, capsule - like ; central membrane thin and triangular ; proximal ernargination of capsule moderately narrow and deep ; proximal projections of capsule curving inwards, apices subacute ; extending beyond proximal ends of valves of penis. Epiphallus with wide bridge, anterior processes lobe - like, divergent ; lophi finger - like, facing outwards ; dorso - lateral plates
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