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(1892), Salmon and Stiles E1902), Hunter and Hooker (1907), and Hooker, Bishopp, and Wood 1912). The latter report contains a useful summary of the antecedent ]_iterature.
IDENT IF ICAT ION
Males are easily identified in the African fauna. They have no comm‘ appendage on the posterior body margin and the inner margin of the adanal shields does not project posteriorly as a spine. Palpal segment I is without a ventral bristle.bearing protuberance. The hypostome formula is 4/1. and the denticles are noticeably finer than those of B. decoloratus. In size, males are about the same as those of _B_. decolorat .
Females are usually readily separated from Q. decoloratus by absence of a deep gap between the inner and outer spurs of coxa I. A shallow concave emargination replaces this gap. There is no bristle_bearing protuberance on the internal ventral margin of palpal segment I; this margin is fairly elongate and mildly con. cave. The scutal margins anterior of the eyes are usually straight and parallel. The scutum is definitely longer than wide. The hypostome formula is as for the male. The color of this species is usually paler than that of Q. decoloratus.
Figures 108 and 109, d‘, dorsal and ventral views Figures ll0 and 111, Q, dorsal and ventral views
THE BLUE TICK L N 9 6‘ EQUATORIA PROVINE RECODS 15 1 Tereteina Alcela hus busela%us roosevelti Feb 1 1 Torit Alcela hus se a us roosevelti Dec (2) l0 3 Meridi Taurotr _us er anus gigas Feb 5! S) 7 2 Nagichot domestic cattIe Jul 9 1 Nagichot domestic cattle Dec (2) l Ileu domestic cattle Oct 1 9 Katire domestic cattle Jan 8 Katire domestic cattle Oct 30 Gilo domestic cattle Dec 1 4 Torit domestic cattle Jan 2 7 Torit domestic cattle Feb 4 10 Torit domestic cattle Nov 4 9 1 Torit domestic cattle Dec (2) 6 Juba domestic cattle Dec 1 Tombe domestic cattle Mar (SVS) 13 1 Muni domestic cattle Mar (SV S) ll Terakeka domestic cattle Mar (SVS) 1 4 Kajo Kaji domestic cattle Dec 10 Yei domestic cattle Mar 2 8 l Meridi domestic cattle May (S! S) 4 Yambio domestic cattle Jan 2 Li Rangu domestic cattle Apr 1 Kapoeta domestic sheep Dec 3 2 Juba domestic horse Jan 3 2 More (Yei River) domestic donkey Jan ($6) 1 Gilo domestic dog Dec
DISTRIBUTION IN THE SUDAN
Equatoria, Bahr el Ghazal, Upper Nile, Kordofan and Blue Nile Province; specimens also taken from cattle arriving at the Halfa
Quarantine in Northern Province, but it is by no means certain that the species is established there (King 1926).
Specimens have been seen from the following localities, eoccept Blue Nile Province, 2 from donnstic cattle unless otherwise noted:
U r Nile: Fangak and Ler (SVS). Maban (domestic pi s- SVS). -23 5 1
Bor, Pm-ia1€'“:~f', alakal (svs, HR). Akobo and Taufikia (soc). Daga.. Kigille Road (Tora hartebeest; SOC).
)Blue Nile: Fang District (Singa headquarters) (= Funo) (King 1926 .
Bah.r E1 Ghazal: Wan (domestic donkeys, horses and cattle; SVS, Y-HT: '§usser:|. (domestic horse; SVS). Fanjak (domestic dogs and cattle; SVS, HH). Galual_Nya.ng Forest (hartebeest and sick domstic donkeys; svs; tiang; HH). Sixty miles north of Aweil (domestic goat; SVS). Khor Sharmnam, Boro, near Raga, Lau, Karu, Akot, Yl1‘O1, and Path (svs).
Kordofan: Talodi (SVS). El Obeid (SVS and Gordon College collection].
Khartoum: Khartoum (horse; Gordon College collection). Khartoum Quarantine Station (on Darfur cattle; HH).
Darfur: Radom, Nyala, Sibdo, and Zalingei (domestic horses and cattle; SVS). Near Safaha (domestic sheep; SVS).
Kassala: Kassala and Port Sudan (SVS). Only four female specimens are known from this Province.
1- Northern: Quarantine Station specimens from southern
Since it appears that B. decoloratus is not established in Northern Province and is very rare In Kassala Province, Sudan evidence corroborates earlier expressed beliefs that l5°N. is about the northern limit of this species. The most northern Sudan locality in which B. decoloratus commonly occurs is El.
Obeid, at l3°ll'N. In Kassfia Frov1n' ce, the blue tick is rare and is found, in association with either local humid coastal
situations or with cattle movements, as far north as Port Sudan, which is at almost 20°N. latitude. Small populations also exist in more humid riverside garden areas in and around Khartoum.
The blue tick is distributed throughout most of the Ethiopian Faunal Region, barring the northern and southern periphery of this region on continental Africa. Within its range, B. decoloratus occurs widely everywhere except in more open, dry areas, n tropical forests. It is usually common where a fair degree of shade and humidity is present. Outlying specimens have been re. ported from other continents but whether these are from imported
hosts or from established populations is not clear.
NRTH ATLANTIC OCEAN: CAPE VERDE ISLANS (Howard 1908. Bacelar 1950).
wssr AFRICA: NIGERIA (Simpson 191213. Unsworth 1949,1952. r4eriem_“9‘51“*1 . Gambles 1951). GOLD coAsr (Simpson 1914. Beel 1920. Stewa.rt 1933,1934. Minning 1934). FRENCH wssr AFRICA Minning 1934. Rousselot 195l,l953B. Villiers 1955). LIBERIA Minning 1934). PORTUGESE GUINEA (Monteiro da Costa 1926. Tendeiro 1946A,
B,1948,l951.C,l952A,C‘,D,E,1953,1954. Bacelar 1950). SIERRA LEONE
CENTRAL AFRICA: CAMEROONS (Ziemann 1912A. Minning 1934. Rageau l95I,I953A,B. Rousselot 1951,l953B. Unsworth 1952. Dezest
1953). FRENCH EQUATCRIAL AFRICA (Minning 1934. Fiasson 19438. Rousselot l95l,l953A,B).
ELGIAN CONGO and RUANA.URUNI (Newstead, Dutton and Todd 1907. As B. ca nsis: Massey 1908. Roubaud and Van Saceghem 1916. Nuttall and Wargurton 1916. Seydel 1925. Schwetz 1927A,B,C,l932, 1933B,l934. Schouteden 1929. Bequaert 193QA,B,1931. Minning 1934. Van Slype and Bouvier 1936. Bouvier 1945. Fain 1949. Schoenaers
195lA,B. Rousselot 1951,l953B. Theiler and Robinson 1954. Santos Dias 19541). Van Vaerenbergh 1954).
EAST AFRICA: SUDAN (Balfour l9lIF incorrectly stated that B.
decoloratus does not occur in the Suan. King 1908,l9l1,l926. Hoogstraal l954B,C).