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This is a member of the R. simus group (page 751).
Males: Males are characterized by a combination of char. actors including few, large scutal punctations arranged in four irregular longitudinal rows that form an especially distinctive pattern posteriorly (as in R. simus sene alensis); lateral grooves varying from deep to shallow (narrow and shallow in Sudanese spec. imen) but containing a row of large, deep, almost adjacent puncta. tions etending from the first or second festoon to the eyes (this row of punctations also extending from the eyes to the scapulae but more widely spaced and not in a groove; coxa I with a dorsal projection that is small but definitely pointed; posteromedian groove and paramedian grooves more or less marked, indicated by narrow, shallow depressions (uncommonly all but oh. solete; distinct in Sudanese specimen). The adanal shields of material from southern Africa are narrowly elongate, subovate, with rounded external margin, pointed anterior and posterior junctures, and slightly recurved inner margin posteriorly; those of the single available Sudanese specimen (Figure 262) are broader posteriorly and the externoposterior juncture forms almost a right angle (see Rmmxs above). Accessory shields are indicated only by posterior points. In addition to the already mentioned scutal punctations, there is a cluster of several punctations on the scapulae and two to six others may be scattered on the scutum; interstitial punctations are faintly indicated.
Females: The scutum of specimens from Southwest Africa is subcirculzf and either as wide as long or slightly wider than long; lateral grooves are entirely absent but are replaced by a convex line of three to seven large punctations; in the median field four or five other large punctations are scattered and a few others are clustered on the scapulae; interstitial puncta. tions are fine and cover most of the scutal surface. Lateral margins are slightly elevated, devoid of punctations posterior of the scapulae,'and bear flat eyes. Cervical grooves are short, deep, and either convex or narrowly ovate and converging. Porose areas are small, circular, and not widely separated. Color is as in males; size is slightly greater than that of males but increases greatly when feeding; upon engorgement the body out. line is subcircular.
As stated in RDMRKS above, it is possible that when females of this species are found in the Sudan they will be similar to those described and illustrated herein except that the scutum
will be considerably more elongate and narrowly pointed posterior. ly.
Note: Zumpt (l950A) attributes the name R. distinctus to ‘Bedford, Fmg. S. Afr., no.ll, 1935, p.6," anerror repeated by Santos Dias (19530). The name R. distinctus was proposed on page 523 of Bedford's (l932B) checE]Ist.
Figures 265 and 266, 6‘, dorsal and ventral views
dorsal and ventral views
THE RED TICK L N 9 d‘ EQUATCRIA PROVINCE RED@DS 10 16 Kapoeta Kle hantulus rufescens hoo straali Apr (n1merc';s 1 1 Lokila Essie ourebi uatoria Feb 1 L Torit 5ure5i'a oure5i' ~§ Dec (3) 2 2 Torit HI tr s §uii nus 55151-1 Jan 1 Terakeka. auro r s o attersonianus Jan (S06) 2 13 Torit Hce1a Ens buse¥a&us roosevefii Dec (2) 1 1 Kapoeta. domestic goa s Jul 6 6 Kapoeta. domestic goats Dec 30 38 Labalwa domestic goats Dec 1 9 30 Sunat domestic goats Dec 21 15 Torit domestic goats Dec 1 2 25 Torit domestic goats Nov 53 60 Torit domestic goats J an 126 24 67 Loronyo domestic goats Jan 3 17 8 Il1l111‘Ok domestic goats Jan 27 38 Juba domestic goats Dec 11 20 Kaguada domestic goats Dec 151 48 89 Kajo Keji domestic goats Dec 2 2 2 Kapoeta domestic sheep Dec 4 Kapoeta domestic sheep Jul 9 2 3 Loronyo domestic sheep Jan 11, 1 4 Katire domestic sheep Jan 3 14 Torit domestic sheep Nov 4 7 Juba domestic sheep Dec 16 21 Juba domestic sheep Jan 4 9 Kaguada domestic sheep Dec 3 2 Yei domestic sheep Jun 3 1 3 Yambio domestic sheep Jun 2 2 Kapoeta domestic dogs Dec 2 Torit domestic dogs Jan 1 1 Torit domestic dogs May (SVS) 1 Torit domestic pig Dec 1 3 Torit domestic horse May (SVS)
Bahr El Ghazal:
DISTRIBUTION IN THE SUDAN
All Provinces, except Northern Province (King 1926). below, however, Sudan Government collections contain specimens from Shendi, which is on the Nile in the southern part of Northern Prov. ince (l6°42'N. latitude), but this tick is probably absent from most areas of Northern Province.
Collections containing specimens with the following data have been seen:
Wau (sheep, goats, especially common on horses and a‘fi'E'<> eys—; ‘sVsTHn). Fanjak (sheep and goats; rm). Yirol and Galual_Nyang Forest (horses; SVS). Lake Nyubor (cattle; SVS). The absence of the red tick on the many wild animals examined in this Province is noteworthy.