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L 1: 9 er EQUATCBIA PROVINCE REIZCRD 1 1 Kajo Kaji On grass Dec (BMNH)

British Museum (Natural History) specimens, collected by Captain C. H. Stigand in the early 1900's are the only ones extant from the sedan (Hoogstraal 1954.B,0). This is the most northern and eastern record for the occurrence of the rare West African elephant dernncentor. It is unlikely to be found elsewhere in the Sudan other than on the west bank of Equatoria Province and possibly in Bahr E1 Ghazal Province.

DISTRIBUTION

D. c. circ ttatus, a Central and West African elephant pa.ras'ite',' extefis IE3 East Africa only so far as the western parts of Uganda and the Strlan. In Mozambique, a separate sub. species is tentatively recognized on the basis of somewhat larger size and more irregular spotting.

wrsrr AFRICA: LIBERIA (Bequaert 193011). smmu. mom: (SimpSO11 l9l3)._W@Y COAST (Rousselot l951,l953B).

CENTRAL AFRICA: CAMEROONS (Neumann 1901. Ziemann 1905. Ragea-u_l~ ,B). FRENCH EQUATCRIAL AFRICA (Neumann 1897. Tonelli_Rondelli 1930A. Rousselot l95l,l953B. Rageau 1953B). EIGIAN CONGO (Neumann 1897. Nuttall and Warburton 1916. Schwetz l927A,B,C. Schouteden 1929. Bequaert l93OA,B,l93l. Tonelli-. Rondelli l93OA. Rodhain 1936. Fain 1949. Schoenaers 1951A. Theiler and Robinson 1954).

NOTE: According to Theiler (correspondence), the record for Ruanda..Urundi by Santos Dias (l95l,D) is incorrect.

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HCBTS

All authors report this species from elephants, Ioxodonta

africana subsp. Mettam (1932) also listed the “commoH'd§IEEP'. BIOIDGY

Unstudied. In Banningville territory of Belgian Congo "all sick elephants carry this tick and Amblyomma tholloni, sometimes in great numbers’ (Fain 1949).

DISEASE REIATIONS

It has been suggested that either this species or Ambl omma tholloni may transmit piroplasnnsis (Nuttallia loxodontisl of

elephants in the Congo.

REMARKS

Schulze (1941) noted featues of the tarsus and ha11er's organ of this tick.

Santos Dias (1952F) has separated Mozambique populations into another subspecies, Q. cir ttatus cumha.silvai. These specimens are larger than those rom more norther y parts of Africa and exhibit more irregular pale scutal coloration in several smaller, nore divided spots rather than in three large spots as in females of the typical subspecies and eight large regular spots as in males of the typical subspecies. These dif_ ferences, however, appear to be similar to individual variants of Q. rhinocerinus, reported by Bequaert (193OB), and larger sub_ sequent collections may indicate the necessity of dropping this subspecies.

IDENTIFICATION

Characters in the generic key readily identify this tick and separate it from the only other species in the Sudan.

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‘ Figures 124 and 125, o’-, dorsal and ventral views Figures 126 and 127, Q, dorsal and ventral views

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L N 9 6‘ EQUNTORIA PROVINCE RECORDS 1 l Magwe on grass Feb (SVS) 1 1 Nimule on grass Jan (just west of) Localities uncertain 1. 2 Acholi (Lado) May (sec) 8 12 Atiambo (Lado) Jun (sec) 8 10 Azzar (Mongalla) May (SGC) 8 13 How River (Lado) Mar (sec)

The material from uncertain localities near the Suda.n..Uganda border, which was the basis of King's (l91l,l926) reports of the

rhinoceros dermacentor from the Sudan, was collected by him in 1909 and 1911.

The recent specimens from Magwe and from the game reserve just west of the Nile near Nimule establish this species on both the west and east banks of Equatoria Province.

DISTRIBUTION IN THE SUDAN

Bahr £1 Ghazal: All specimens from grass, near Yirol to 25 miles west of Tirol; 23 November 1954, E. T. M. Reid le it (7c?c"‘, 1'n HR

599). 9 June 1954, P. Blasdale legit (19). Material col. lection.

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DISTRIBUI‘ ION

_l_)_. rhinocerinus parasitizes the black and the white rhinoceros in eastern E southern Africa and in the Belgian Congo.

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