The overall colour of adult insects is usually green, with a finely dotted shiny integument. Antennae are longer than the head and pronotum together. The pronotum is cylindrical, with three deep and wide sulci (grooves) crossing the dorsum.
The colour of immature insects may vary depending on their phase (illustrated right) during a particularly fertile year, dense populations of H. daganensis showed a distinct blackening in certain areas of cuticle.
^Krauss (1877) Orthoptera von Senegal, gesammelt von Dr. Franz Steindachner, Sitzungsberichte der Österreichischen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Klasse (Abt. 1) (Sitz. öst. Akad. Wiss. Math-naturw. Kl. Abt. 1) 76(1):29-38
^Roskov Y.; Kunze T.; Orrell T.; Abucay L.; Paglinawan L.; Culham A.; Bailly N.; Kirk P.; Bourgoin T.; Baillargeon G.; Decock W.; De Wever A. (2011). Didžiulis V. (ed.). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Retrieved 24 September 2012.
^Uvarov, B.P. (1966). "Phase polymorphism". Grasshoppers and Locusts. Vol. 1. Cambridge University Press.
^COPR (Centre for Overseas Pest Research) (1982), The Locust and Grasshopper Agricultural Manual
^Johnston, H.B. (1968), Annotated catalogue of African grasshoppers, The Cambridge University Press, Cambridge Suppl:448 pp.
^Johnston, H.B. (1956), Annotated catalogue of African grasshoppers, The Cambridge University Press, Cambridge 833 pp.
^Dirsh (1965), The African Genera of Acridoidea, Cambridge University Press, Antilocust Centre, London 579 pp.
^Mestre & Chiffaud (2006), Catalogue et atlas des acridiens d'Afrique de l'Ouest
^Descamps (1965) Acridoides du Mali (Deuxieme contribution). Regions de San et Sikasso (Zone soudanaise) (1 partie) et (2 partie), Bulletin de l'Institut Fondamental d'Afrique Noire (IFAN). Série A: Sciences Naturelles (Bull. IFAN (A)) 27:922-962, 1259-1314
^Davey, Descamps & Demange (1959) Notes on the Acrididae of the French Sudan with special reference to the central Niger delta (I, II), Bulletin de l'Institut Fondamental d'Afrique Noire (IFAN). Série A: Sciences Naturelles (Bull. IFAN (A)) 21(1-2):60-112, 565-600
^Descamps (1956) Insectes nuisibles au riz dans le Nord Cameroun, AgronomieTropicale (Nogent-sur-Marne) (Agron. Trop. (Nogent-sur-Marne)) 11:732-755
^Kevan, D.K.M. (1956) Results from the Danish Expedition to the French Cameroons 1949-50: XV. Orthoptera: Acrididae, Bulletin de l'Institut Fondamental d'Afrique Noire (IFAN). Série A: Sciences Naturelles (Bull. IFAN (A)) 18(3):960-977
^Popov, G.B. (1959) Some notes on injurious Acrididae (Orthoptera) in the Sudan-Chad area, Entomologist's Monthly Magazine, London (Ent. Monthly Mag.) 95:90-92
^Mason, J.B. (1973) A revision of the genera Hieroglyphus Krauss, Parahieroglyphus Carl and Hieroglyphodes Uvarov (Orthoptera: Acridoidea), Bulletin of the British Museum (Natural History) Entomology (Bull. Br. Mus. (Nat. Hist.) Ent.) 28(7):507-560
^Southcott (1994) A new larval erythraeine mite (Acari: Erythraeidae) from West Africa, International Journal of Acarology (Int. J. Acarology) 20(2):81-85
^Kalaisekar, A (2017). Insect pests of millets: systematics, bionomics, and management. London: Elsevier. ISBN978-0-12-804243-4. OCLC967265246.