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_ I4 Figures 13 and 14, Q, Hypothetical Argas species

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KEY MORPHOL(X}ICAL CHARACTERS, GENUS ARGAS

PLATE XII

KEY TO SUDAN SPEIIIES OF ARGAS

I

MAIESANDFEMAIES

1. Pair of transverse, slitlike organs situated just posterior of anus. Body outline generally subcircular or wider

than long. (Bat paraSit93)oeoooooo0o0oooooooooooocoocooooccz

Ventral paired organs lacldng. Body
outline oblong, considerably longer than
‘wide. (NOt bat parasite8).....................¢............4

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Body outline generally subcircular or
circular, never as wide as A. confusus.

Hood absent. Peripheral integument
striated and lateral suture present. . . . . . . . .A. VESPERTILIONIS

Fi'gur~s , , ,

1.. Dorsum with large, depressed polygonal areas. Size large (15 mm. to 22 mm.

long). (Adults parasitic on mammals)..............A. HIUMPTI Figures j§)2UI)32

Dorsum finely wrinkled. Size mderate
(10 long, usually less). (Fowl

maS1teS)IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII5

5. Dorsal and ventral periphery of distinct quadrangular "cells". Postpalpal hairs present. (Chicken parasite, common in

~.QQQQQQQQQQQQQQQQQQQQQQQQQQDQQQQQQQQQQQQQQQQAQ Figures l5,I5,§'7,2’B

Dorsal and ventral periphery finely
wrinkled. Postpalpal hairs absent.

(Pigeon parasite, very rare in Sudan).............A. REFLEXUS
Figures I7,I3,2§, 5O

Figures l5 and 16 Ar as ersicus Figures 21 and 22 Areas ves ertilionis
Figures 17 and 18: E as reflexus Figures 23 and 21.: I; as Eueti
Figures 19 and 20, Egas Brumpti Figures 25 a.nd 26, Eg-as coH'usus

DORSAL PIRIPHERAL DIFFERHWIATION (odd numbered figures) AND LATERAL INTEGUMENT (even numbered figures) OF ARGAS SPECIES.

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Note especially the presence of a lateral suture in Figures l6,l8,2O a.nd 22 ’ and its absence in Figures 21. and 26.

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Figures 27 and 28,
Figures 29 and 30,

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Ar as rsicus, Q, dorsal and ventral views
Irgas re exus, Q, dorsal and ventral views

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PLATEIX -58.. I 11.,’-'--~s~ - - ~ ~ ~ _

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