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Atelerix eri oweni Majan Yom 2 May 1953 E. T. M. Reid legit. ~ rodent burrowing in termite,nound", Haynjok,

N. U. Gogrial, April, 1953, V. Dees le it. , tiang, Damaliscus korri tian , Galual.-Nyang Forest, Ipril, l 53, E. T. M. ReId éeéfi. 3, Ieopard, 36 miles south of Yirol, 18 January, 1953, . . M. Reid le ‘t. 19, domestic cat, Galua1...Nyang Forest, March 1953, ~, same host, weu, October, 1953, both svs.

"mongoose", Had Medani, 29 November

Blue Nile: 566‘, 39%,
t soc).

1950, 15. J. Iewis legi

Khartoum: 4&5", "fox", Khartoum, 9 January 1918, R. Cottam leét (flf.


The subspecies muhsami occurs in all areas of the Ethiopian Faunal Region, incl~e mountains of the Yemen in south.. western Arabia. We have not seen it in Egypt. The data will

be published subsequently in a series of reports on Africa haema. physalids.


The subspecies muhsami is especially common on small carni_ vores such as mongooses, genets, civets, and wild cats. It seldom attacks wild or domestic canines or wild antelopes. Usually smal... ler numbers are found on mole rats, shrews, hedgehogs and hares; ' the possibility that certain of these may represent separate forms

is being studied. Full data will be presented in the report men... tioned under DISTRIBUTION above.



This subject requires study, especially in relation to that of the subspecies leachii. DISEASE RELATIONS



As already indicated, Theiler and the writer have been studying variation in this species for some years and the final report is nearing completion. Recent material sent by Santos Dias to Theiler for identification, and returned with the note that this was typical of what we were povisionally referring to as "H. near indicaF pending completion 0 our studies, was utilized-as the ype series for the "species" muhsami. These specimens and their description and illustration correspond with what we have been considering as the ‘H. leachii near indicaF of Theiler (l943B). Subsequent Theiler. Santos Dias correspondence, however, indicates that the latter worker considers muhsami as a separate species separate and distinct from "near indica". Recently (November 1955; Dr. J. Bequaert has kindly sent me his paratype specimens of "H. muhsami" and study of these confirms the already mentioned Theiler viewpoint.

Santos Dias (19540) reports a nymph of "R. muhsami" from a tchagra shrike in Mozambique. The likelihood that this is actual. ly a specimen of §. hoodi hoodi should be considered.



H. leachii muhsami in some instances intergrades with H. 1. leachIi E5d_th§se specimens may be difficult or impossible to

separate to subspecies. Criteria for separating this species from others are established in the key and under IDETIFICATION

of H. leachii and in the latter section the characters differen. tiating the two subspecies are also noted. Results of a long. term study of this subject will be presented subsequently. Here, only a brief resue of the characters separating H. leachii muhsami from the nominal subspecies is provided.


Males. These ticks are smaller and their scutal outline is

wider than that of the subspecies leachii. Scutal punctations

are only moderate in number and are generally fairly large and shallow. In outline, the palpal outlines of the two are quite similar except that the lateral margin of muhsami is slightly concave though in exceptional specimens it may be straight and

even more uncommonly it may be very slightly convex. The ventral retrograde spur of palpal segment 3 notably is like that of leachii,


but in mzhseml the basal. spurs may be more reduced. The basis capituJE'§-short and wide, with lateral mrgins widely diverging anteriorly, and the cornua are usually smaller and weaker than those of leachii. The coxal spurs are comparable with those of leachii, an important criterion for separating this subspecies from some other equally small, not otherwise greatly differing species in Africa.

The scutal size varies from 1.3 mm. to 2.2 mm. long and from 0.8 mm. to 1.2 mm. wide. A majority of specimens fall within the lower size range and are easily recognizable. The few larger specimens may be typical or they may approach the form of the subspecies leachii in shape of palpal lateral margin or in development of Kpfl. spurs. The smaller and more compact size and shape of muhsami. is almost always reflected in stouter and

more abruptly tapering tarsi.

Females. Like males, this sex is smaller, rounder, and more compac-t"thTn females of leachii. The scutal length is about equal to or only very slightly greater than the width; the posterior mrgin is more broadly rounded; the punctations are rather large and moderate in numbers; and the cervical grooves are more concave and more distant from each other. The palpal outline usually has the lateral margin definitely concave; the ventral basal spur is absent but the dorsal basal spur is quite variable; the ventral retrograde spur of segment 3 is like that of the male and of the subspecies leachii. The basis capituli in all avail. able specimens is definiteIy short and wide with lateral mrgins distinctly diverging anteriorly and the cornua are usually broadly tapered and short. Ccxal spurs correspond to those of the male. Tarsi tend to be shorter, stouter, and more abruptly tapered than those of female leachii.


Figures 154 and 155, d‘, dorsal and ventral views Figures 156 and 157, Q, dorsal and ventral views

Rio 5&1 specimens


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l Noli Hills Cephalogus caerulus musculoides Mar (SGC)

1 Nagichot omes c cattle Jul

2 Gilo domestic cattle Dec


ll 16 Lotti Forest Guttera edouardi sethsmithi Apr


These localities , all in the central area of the east bank of Equatoria Province, lie between 4500 feet and 6500 feet elevation. H. ta has not been found in other Provinces of the Sudan. The ~§ specimen is somewhat atypical, see REMARKS below.


Li. %tea is a quite common Central and West African tick that ranges in s er numbers into the forested highlands of eastern Africa. It is especially numerous in the Cameroons.

wasr mum: com COAST (Nuttall and Warburton 1915). FRENCH vrsr ~iers 1955). smm mans (Simpson 1913. Nuttall and Warburton 1915). NIGERIA (Ziemann 1905. Neumann 1911. Simpson 1912B. Nuttall and lilarbuirton 1915).

CENTRAL AFRICA: CMEOONS (Neunnnn 1905,1911. Ziemann 1905, 191u~ Warburton 1915. Rageau 1951 ,l953A,B. HOOgSti‘8.81 19540). RIO MUNI (Nmnerous specimens in HH collection from north... central part of state; K. C. Brown le t; gift of Colonel R. Traub). FRHICH EQUATORIAL AFRICA (Fi.8.SSO1'1 1 . RlO\1S8610‘|’. 1951,1953B. Hoogstraal 19546)» BEGILN CONGO and RUANDL-UKUNDI (Nuttall and Warburton 1915,1916. Bequaert 1930A,B,1931. Schoenaors 1951l,B. Van Vaerenbergh 1954. Santos Dias l954D. See IRSTS below).

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