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A. Dorsum covered by leathery integument

laclcing scutum. Mouthparts ventral. Eyes

absent , or present in lateral folds . Spi...

racular plates snnll , anterior of coxa IV . ticks")QIIOICIOOOOOIOOOIOOIIOOOOOOIlO0.0IIFM~

E?g{11‘e~

Body periphery flattened and usually

structurally different from dorsum;

lateral suture usually present".

(From birds , bats , or their resting

places - only 5. brumpti from mammals

or 1iz€n.dS).OOOOOQOIOIOQOOUOIOOQQQOOIOIOOIOOOCIOOOOOOOIOARGAS

Figures 13 F5 53

Body periphery undifferentiated;

lateral suture absent. (Thick,

leathery ticks from houses , corrals ,

blErOw5 or retreats)...¢.......¢.....¢-...¢--.--aiNITHUJ(F-(3

Figures 8 to IE, §§ E 53

B. Dorsum completely covered by scutum (db?)
or anteriorly covered by scutum (go). Mouth.
parts anterior. Eyes absent, or present near
lateral nnrgin of scutum. Spiracular plates
large, posterior of coxa IV. (“Hard ticks")......FAMILY IXCDIDAE.

Figures 4 Q '7, J to

[graphic]

‘Characters in this key do not necessarily apply to species within
the same genera from areas outside of the Sudan. Two other genera,
Otobius (Argasidae) a.nd Rhi icentor (Ixodidae), occur in the Ethiopian
'F'aurFl._Region outside of an and are not listed in this key.

A few other genera occur in other faunal regions. Another family,
Nuttalliellidae, is known only from Southwest Africa.

"The peripheral differentiation of _§. boueti and _1_\. confusus is only slight a.nd these species lack a laterfi suture.

[graphic]

Anal groove distinct, extending anteriorly around anus. Scutum without eyes, festoons, or orna. mentation. dU‘with seven shields adhering to and almost entirely covering ventral surface. (Rare

in &fian)OOOOOIOOCIIQOQOQQIOOQOOOIOOOOOO0OOOOOIOHDDES

Figures 212 to §§§

Anal groove distinct or indistinct

but never extending anteriorly around

anus. 68‘ with fewer (2 to 6) or no

ventral shields, these partially non.

adherent and only circumanal.............................2

Without eyes. (Basis capituli rec. dorsally)...........QQI...Q...I..‘.....'."...’.3

eyeSQOOIOOOOQCCOOOOOOOOOOIOIOOOOOOOIOIIQOIOOOOOIIOQO4

Palpi narrow, elongate; segment 2 at least twice as long as wide. (Rep. ~Sites).................'.‘....'.'...QIIQO~

Figures §5 to IE3

Palpi conical, short; se ‘nt 2 about twice as wide as long. Mammal or bird‘ paraSit'eS)OOIOOOOOOIOOOOOOOOOOOOOOOOOOII~mmJIS

Figures I53 to I57

Palpi as wide as or wider than long......................5

Palpi longer than wide (Common, ti-~Q..I....."..‘..I.'..........'..'....8

Large ticks with colored ornamentation.

Basis capituli rectangular dorsally.

(Rare in Sudan parasites of elephant

and rhinoceros)................................DERMACENTOR

Figures I55 to IQ’?

Small or moderated.sized, unornamented, common ticks. Basis capituli usually dorsal-lyOOIIOOIOOOOOIOOOOOOOOQOIIOOOOOOOOOOCOOO6

6. Anal grooves faint or obsolete.
Festoons absent. Spiracular plates
I'D“-nd or Qvalo fi‘ v9ry Sfloooooooooooe0oooooooooooooo7

Anal grooves distinct. Festoons
present. Spiracular plates with
a tail...like protrusion. £‘

nnderate 8128.............................RHEICFTHBIU3

Figures ZZO F5 H5

7. Palpi ridged dorsally and lateral...
ly. <13‘ with normal legs. (COIIIIDH
chiefly on domestic cattle and

equines)........................................BQQPHI-BUS Figures l'OI'$'II'§

Palpi not ridged and somewhat more

elongate. did‘ with massive, beady

leg segments. (Rare in Sudan, known

Only frOm gira£fes)OOOOOOOOOOOOIOOOOOOOOOIOOOOOMmGAR»OPUS

Figures 2355 to 23%

8. Scutum without colored orna.mentation.

<58‘ with adanal and subanal shields.

Palpal segment 2 at least twice as

long as segment 3. Festoons ir..

1‘eg'U.l8.1‘ caalescedoooooooooooooooooooooHY~ Figures 153 to ZII

Scutum with colored o_rnamentation*.

av without adanal or subanal shields .

Palpal segment 2 less than twice as

long as segment 3 . Festoons regular,

nflt CO8.leSC8d...................................AMBI-IQMA

Figures HZ E §§

~

*0rnamentation is often not extensive in the elephant tick, A.

tholloni. Ornamentation may be more or less faded in poorly-preserva specimens.

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2. Genital apertme undeveloped. Scutum of 9 type but basis capituli lacking MWOOOOOOIOIOOOOCOOCOOIOOOOOOOOOOOOOOCOOOOOO~

Genital aperture developed. Scutum
of :3‘ or Q type and basis capituli of
Q with two porose areas (Figure 6 )...................Adults

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On the following pages all available EQUATORIA PROVINCE RECRDS for each species are listed according to numbers of specimens of each stage and sex, locality within the Province, host, and month of collection. The mammlian hosts are described by Setzer (l956B) in his "Mammals of the Anglo-Egyptian Sudan". Domestic animals and wild birds or reptiles are listed following wild mammals. Where human beings have served as hosts, the records precede those from animals. Different collections from one kind of host are listed geographically from east to west.

If two or more collections have been made from a single kind of host in the same locality during one month, the data have been collated on one line and the number of collections noted in parentheses immediately following the month. The "number of collections" are statistically unreliable since they may refer to one day's collection or to a collection from one herd of domestic animals. However, every collection from a single wild animal host is considered as a single collection.

[graphic]

It will be noted that most specimens were taken during the dry season, November to April. This has no significance except to indicate that much of my tick collecting in Equatoria Province was accomplished during this season. bbst Sudan material presented by other persons has also been gathered during this period when travel is easier and most officials have returned from home leave.

The great bulk of records in the Equatoria Province section are from my collection and are not otherwise noted. Any data from other sources are indicated by initials in parentheses following the month of collection: (SVS) for Sudan Veterinary Service, (SOC) for Sudan Government Collections, (BMNH) for British Museum (Natural History),

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