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L N Q 6' EQUATORIA PROVINCE RECORD 1 Kipia Crocidura sp. Jan (MNH)

This nymph was taken at 8000 feet elevation in the Imatong Mountains from the tail of an unidentified Crocidura shrew. It is specimen nuber l950.3.20.42 in British Museum (Natual History) collections and has recently been identified by Arthu (1956 cor.

resbondence).

DISTRIBUTION

Ixodes alluaudi is known only from the Imatong Mountains of

the Sudan, highIand forests and alpine meadows of Tanganyika, Kenya, and several localities in Basutoland and the Union of South

Africa. Intervening populations undoubtedly have been overlooked.

msr AFRICA: SUDAN (Not previously recorded. Arthur, ms.). TANoANY"'T1'<l_(‘_'Ne1rus.un 1913). KENYA (Arthur, ms.).

SOUTHERN AFRICA: UNION OF SOUTH AFRICA (Theiler 1941. Arthur,

ms.)."l§E§UTUEKN5'TArthu, ms.).

HOSTS

The species of the Sudan host is not known. Crocidura shows recorded from the Imatong Mountains during the present study are

C. hilde ardeae haios and Q. n ansae toritensis (comon), both of w c are escri as new subspecies (Setzer 1956). The host

of Neumann's material was not stated.

From Thei1er's (1941) study of South African data it appears that the red shrew, Q. flavescens, may be the true host and infes. tation of other rodents and insectivores is incidental. These hosts are the vlei or groove_toothed rat, Oto s irroratus subsp.; the four4triped grass mouse, Rhabdomys pumilio sub§pT?_R¥§nt's gerbil, Tatera brantsi maecalinus; Lobengula s gerbil, T. loben_ EE%ae subsp.; and the Eastern Province golden_mole, Ambl somus

o entotus subsp. Thirteen collections were made from red shrews and twelve from other hosts. Collections from red shrews also contained the mst specimens. Arthur (ms.) records the same

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hosts and adds Cryptomus capensi .

BIGLOGY

Life Cycle

"Probably a thee host tick; adults, nymphs, and larvae invariably have been collected separately except for two records from Brent's erbil when adults and nymphs were taken together" (Theiler 1941?.

Ecology

The fact that the few specimens known from the Suan and Tanganyika were taken in highland forests or alpine zones is of some interest. In southern Africa this altitudinal distri_ bution is not so restricted.

The red shew frequents runways made by rodents in long grass beside streams and rivers. In drier areas, this tick is taken in the smaller and shorter runways of other rodents associated with bunches of grass at the base of thorn bushes and other shrubs. Red shrews also inhabit the underground nesting burrows abandoned by rodents (Theiler 1941).

REMARKS

Theiler (1941) has made an extensive study of the morphological featues of this species to show its exceptionally prim. itive characters. This report should be studied by anyone in. terested in tick morphology or phylogeny.

IDENTIFICATION

The following notes are a brief abstract of Theiler's (1941) descriptions, which also include those of the larva and n h. Arthur (ms.) also redescribes this species; his manuscript Is not available at the time this is written but he has (correspondence) confirmed the accuacy of Theiler's description and of this sum.

mary.

Male. This is a small light brown tick with slender legs. The scutu, appoximately twice as long as wide and sharply pointed at both ends, bears fine, evenly distributed punctations posteriorly and coarser punctations anterolaterally. Cervical grooves are vaguely indicated. The short, converging palpi, which overlap the short, blut hypostome, are borne on a lateral projection of the basis capituli. The ventral plates and coxae are mst distinctive (Figure 340).

Female. Palpi are narrow and elongate but also borne on a later§I projection from the basis capituli. The scutu is widest just posterior of midlength and abruptly converging posteriorly; its faintly reticulate surface bears a few medium size punctations and scattered hairs; cervical grooves are absent; lateral grooves are fine. Ventrally, genital grooves are long, straight, diver. gent; anal grooves are truncate anterior of the anus, thence long and subparallel tending to converge distally.

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ARTHUR (1956 correspondence). Preliminary study of a large amount of material referrable to this name reveals that five species with closed circular or pointed anal grooves are involved. Incidental. ly, Neuann's type material, from hyra has pointed anal grooves. Rio Muni specimens especially are easily distinguishable from all others. Neuann's material from Togo (Berlin Museum), now at Toulouse, is I. oldi, although Neumann had identified it as I. rasus. What Nuttell considered as I. rasus is a new species

that is now being described. Schul§e's descriptions of the I. rasus group are very vague and it is difficult to associate his so_called subspecies with available material. I. rasus and re. lated species are no more variable than other Ixodes species and are easily separated once adequate criteria have been established.

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N.B. The exact status of the pair of specimens illustrated herein (Figures 222 to 225) and of the single male from the Sudan (page 550) has not yet been determined.

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Figures 342 to 346, 6‘; 347 to 351, Q; 352 to 358, nymph. Figures 342, 347, and 352, legs I to IV.

Figures 343, 344, 348, 349, 353, and 354, palpi, d01$8l

and ventral views.

Figures 345, 350, and 355, hypostome, ventral view.
Fig‘!-res 346, 351, and 356, spiracular plates.

Figures 357 and 358, nymph, dorsal and ventral views.

MARGAROPUS REIDI SP. NOV.
Qudan Paratypes

.. 896

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