New species of Linognathus and Polyplax (Anoplura)

Onderstepoort Journal o.f Feterinar-y Science anrl Animal Industry, Folume 7, Nitmbm· 1, Iuly, 1936.

New Species of Linognathus and Polyplax ( A noplura).

J3y G. A. H. BEDFORD, t:lection of Pmasitology, Onllerstepoort.

Liuo.rpwthus peleus noY. sp.

(FIGS. 1-2.)

MALES anrl females taken off Pelea cazneol1ts (Yaal Hhebok), XaaU\Y- poort, C.P., 26th July, 1922 (coll. Amtin Hoberts). Holotype a male.

A. ^ll.

Fig. J. -!.inognathus 11eleus nov. sp., female (A) atl(l male (T3).

:KE\\. SrECIES OF LI:NOGXATH"CS .'~ND POLYPL~X.

Female (Fig. L~).-Length 2·1 mm. Hearl elongate, the fore- head parabolic \Yith a transverse band on the venter; antennae set ,,·ell fonYarcl; hind head with the lateral margins gradually broad- ening from base to apex; tlorsum with a distinct, irregular sclerot:ie pattern, the setae of medium length; pharynx \Yith brushes, mouth- part; extending beyoncl posterior margin of the head.

Thom:v sho1-ter than the head; sternal plate absent.

i!bdomen elongate oval, the setae arranged dorsally and ven- trally into median and lateral groups. Spiracles large \Yith distinct markingc;. Gmwpophyses (Fig. 2.l) elongate with a fe,Y short setae on thei1, inner margins; genitnl plate spatulate.

.

...

A. B.

Fig. 2.- Linognathu.s peletts nov. sp., A. genital reg1on of female; B. malo genitaba.

Jlalc (Fig. lB). -Length 1· G mm. Heatl aud th01ax as in tbe female. Abdomen terminating posteriorly in a pointed pn1ces6.

Genitalia (Fig. 2n) with the basal plate long antl slender, like\Yise the pa rameres; endomeral piece well deYelopetl.

A wry distinct species apparently belonging to the tibialis group. It can be Jistiugui6hed by the shape of the hea<l, the female genital region, male genitalia, and apex of the abdomen of the male.

G. A. II. BEDFORD.

Lino.IJIIOilnts damaliscus nov. ,;p. (Fws. 3-4.)

Males and females (indudinp: the holot:;·pe, a male, and allo- type) taken off Drunal/scu8 alb /.fr-ons (bles hok), Zoological Garc1ens, .Johannesburg (coll. G. 1\Iartinag-lia), and females off Damalisc11S dorcas (Bontehol,), Bredasdorp, C.P. (coll. Austin Hoberts).

_-\. B.

Fig. 3.- Linognoth1tS danwliscus nov. s1J., female (A) and Jllnle (B).

Female (Fig. !1~).-Leng-ih 1· 75 1mu. !lead elongate; the fore- head acutely pointed with a transYerse band on the venter; antennae elongate, set allllut the mir1dle; dorsum with a distinct, irregular sclerotic pattern, the setae of medium length; hand head with lateral margins convex and sclerotic: phm·ynx "·ith b1·ushes; mouth-parts extending beyond posterior margin of head.

Thorax shorter than the head; sternal plate present, Yery na rro"·.

Gl

NEW SPECIES OF LIJ\OGJ\ATIIlJS AND POLYPLAX.

Abdomen elongate o\·al, sparcely haire(l, the setae which are short and slender anangell in normal pattern. SzJimcles medium sized ·without nw1-kings. GonopozJhyses (Fig. 4A) small, rounded posteriorly, with a 1'0\\. of setae on their inner margins; genital plate subtriangular.

Jfale (Fig. 3B).- Length 1·55 mm. Head and thorax as in the female. Abdomen terminating posteriorly in a short. broad lobe.

Uenitalia (Fig. 413) '"ith the basal plate long and slenrler; parameres ruch with a pointed expansion on their inner margins rwcl pointed nt their .apices; en(lomeral piere elongate, extending almost to the hase of the parameres anll pointecl in front. This speeies belongs to the tibiaHs group. The female cau be distinguished by the shape of the genital plate nnd gonopophyses, and the male by the genitalia, especially the shape of the endomeral plate.

·.··.

•. :_ ·. ·-~

·.·.

B.

Fig. 4.-Linoanatlnts damaliscus nov. sp.₁. A. genital region of female; B. male gcmtalla.

Linogncdlws cwzJyce?·us nov. sp.

(FIGS. 6-G.)

~'[ales and females (including the holotype, a male, and allo type) taken off Aep:yceros melamznls (Impala), behYeen Pretoria and Johannesburg; also females (mostly slightly immature) off some host species, Rustenburg District, TransYaal.

Female .--Length 1 · 85-2 mm. H eacl short and broad; forehead rounded; autennae situated slightly fonYarcl beyond the middle; hind head \Yith lateral margins distinctly angulate and constricted posteriorly; pharynx \Yith '"ell-deYeloped brushes; mouth-parts 'extending beyond posterior margin of the head.

G. A. H. DEDFOIW.

Tlwra,c short and broad, of ordinary form; sternal plate preseut, slender.

Abdomen elongate oYal, similar to other specie,; of the 7ne'L·icez!s group, the setae sparse anil short exeept for a median pair on each segm<mt dorsally and Yentrally; long marginal sei.ae present on ,;egments yj to Yiii, and a single long seta near the spiracle on the second segment. Spiracles small. Gonopl1yses (Fig. GA) elongate with long setae on posterior margin; genital plate racquet-shaped.

··.:

Fig. 5.-Linognatlms aepycerus nov. sp., head of male.

J/ ale.- Length 1 ·] 9 mm. Similar to the female in general characters, except that the abdomen is pointed posteriorly. Genitalia (Fig. Gn) "·ith the basal plate long and slender; parmneres slender, without notches on their inner margins; endomeral piece long and slender, pointed in front. This species belongs t·o the b1'e1;icezJS group. Both sexes can be distinguished from L. rmgv.lat11S (Piaget) by the shape of the he a cl, and the male also by the genitalia. In the male -of L. an.r;ulatus the pa mmeres are slightly notched at their apices. From other species belonging to the group the females can be distinguished, 1.11ter alia, by the shape of the genital plate, anil the males by the genitalia.

J>olyplaa· svbtateme nov. sp.

(FTG. 7.)

~Iales and females taken off Tatem liodon smithii, Kampala, D ganda ( coll. G. II. E. Hopkins). ll o7otype a female.

F emale.- Length 1· 34 mm. Hearl slightly longer than broad;

antennae set close to the anterior margin, ""·hich is almost truncate; hind head 'rith prominent post-antennal angles and strongly con- stricted occipital region, lateral ma rp;i n stra ip;ht. Antennae with the first segment dilated.

63

NE\\- SPECIES OF LIKOGKATII"CS AKJJ l'OLYPLAX.

T!totrt.T ::1bout as long a~ the heflll, "-ith the lflteral angles roundly c:om·ex: on tl1e dorsum there is Qne short seta ou earh sicle aboYe the spirade aud a long one on the submargin. Stemal plate as in fig. 7H. dlidomen "·ilh the tergal and sternal pbtes short and Yer.'- nmTo\Y, thP teTgal plates of the second :md eighth segments each with about eight setaP, allll the n~maincler "-ith about bYent.v or lliOrP seiae. Sternal plate of the t'ec·ond segmP11t 1vith te11 setae, those of the median sPgments ''"ith nbout seYeniPen setne, aud of the se,·enth six setae: bPb'.een the encls of each stenwl plaie on the third to ,;evPnth segment:; and the cone~pmHling paratPrg-al plnles there is a single seta.

A.

'··

..

. ·.·

>::

:·.

B.

Fig. 6.- Linoanulhus aepycents nov. sp., A. genital region of fernale; 13. H. ale genitalia.

l'w·afet.r;ol pl((fes (fig. 7.~) as follo,Ys: 'l'ho:-;e of the second H<-:gment clistindly diYiclecl longiituliually, e:1c:h portiou with a .~iJJg-le

seta, and lJH" elm-sal pod ion with a tapering proc·es::;; platPs of the thircl to :;[xi h ~Pg-ments eac·h ,,·ith a small tooth nl each posterior angle: tho;;e of the third and fourth seglllents e:1ch ''"ith a short ventral seta ancl a very long clorsal setn; thosP of the fifth ancl sixth segmenb "'ith h,-o Yery ;;l10ri setaP; plnies -of the seven!b aud eighth seg))Jent::; small, e~peuially the latter, each "-ith bYo long setae.

MaZe. -Length 1- F) unn. llrad about ns hroacl as loug, "·ith the lateral mm-:.6ns ·of the hind hearl rounded, other\\·ise ns in the female. Antennae \Tith the basal segment llluch dilaierl and \Yith the third seg-ment strong-l:v morlified. Thorax similar to thnt of the female.

G. A. H. llEDl'ORD.

Abdom.en as in P. tcemeri (Glink), except that the stental plates are smaller, and there is only one seta on each .of the mer1ian segments between the sternal plates and the corresponding para- tergal plates; also the long setae on the third and fourth }Jara·

tf~rgal plates are much longer, lJeing as long as tl1e three follO\Yiug segments. Oendal/a as in P. 1cerneri. 1'his species helollgs to the znaec1sa group, awl amwars to be intermediate het\l·eeu F. tatewe Ferris and P. tcctneri (Glink). From P. tateuw, P. znaecisa aml F.

biseriata it can be distinguished in haYing the short setae on the pnratergal plates much shorter, and the male also by the genitalia.

:From P. ·werne1·1: the male can be clistinguisl1ecl, aparl from the characters giYen above, b)· the shape of the ste1·nal plate.

A. n.

Fig. 7.-PolyzJlax suutaterue nov. sp., A. p:uatergal plates of female; B. sternnl plate.

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