Adults of E. sundevallii are slate-grey to black or dark brown on the upper body, with whitish to pinkish bellies. Juveniles are banded.[2]
Males grow to be longer than females. The maximum recorded snout-to-vent length (SVL) for a male is 93 cm (37 in). The maximum recorded SVL for a female is only 65 cm (26 in).[4]
Although E. sundevallii is venomous and can inflict a serious bite, few bites have been recorded, and none has resulted in a human fatality. Symptoms may include pain and swelling, nausea and vomiting, blurred vision, and loss of consciousness.[4]
Reproduction
The species E. sundevallii is oviparous.[2] A sexually mature female may lay a clutch of as many as 10 eggs.[4]
^ abcBeolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN978-1-4214-0135-5. (Elapsoidea sundevallii decosteri, p. 67; Elapsoidea sundevallii fitzsimonsi, p. 91; "Elapsoidea sundevalli [sic]", p. 258).
^ abcdBranch, Bill (2004). Field Guide to Snakes and other Reptiles of Southern Africa. Third Revised edition, Second impression. Sanibel Island, Florida: Ralph Curtis Books. 399 pp. ISBN0-88359-042-5. ("Elapsoidea sunderwallii [sic]", p. 106 + Plates 21, 32, 37).
Further reading
Boulenger GA (1888). "On new or little-known South-African Reptiles". Annals and Magazine of Natural History, Sixth Series2: 136–141. (Elapsoidea decosteri, new species, p. 141).
Boulenger GA (1896). Catalogue of the Snakes in the British Museum (Natural History). Volume III. Containing the Colubridæ (Opisthoglyphæ and Proteroglyphæ) .... London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xiv + 727 pp. + Plates I–XXV. (Elapechis sundevallii, new combination, pp. 360–361).
Broadley DG (1971). "A revision of the African snake genus ElapsoideaBocage (Elapidae)". Occasional Papers of the National Museum of Southern Rhodesia32: 577–626. (Elapsoidea sundevallii longicauda, new subspecies; Elapsoidea sundevallii media, new subspecies).
Loveridge A (1944). "Further revisions of African Snake Genera". Bulletin of the Museum of Comparative Zoölogy at Harvard College95 (2): 121–247. (Elapsoidea sundevalli fitzsimonsi, new subspecies, pp. 229–231).
Smith A (1848). Illustrations of the Zoology of South Africa; Consisting Chiefly of Descriptions and Figures of the Objects of Natural History Collected during an Expedition into the Interior of South Africa, in the Years 1834, 1835, and 1836; Fitted out by "The Cape of Good Hope Association for the Exploring Central Africa:" Together with a Summary of African Zoology, and an Inquiry into the Geographical Ranges of Species in that Quarter of the Globe. [Volume III. Reptilia.] London: Lords Commissioners of Her Majesty's Treasury. (Smith, Elder and Co., printers). Plates + unnumbered pages of text. (Elaps sunderwallii, new species, Plate 56). (in English and Latin).