25.03.2013 Views

Synopsis of a hundred common non-anopheline mosquitoes of the ...

Synopsis of a hundred common non-anopheline mosquitoes of the ...

Synopsis of a hundred common non-anopheline mosquitoes of the ...

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

IO<br />

sidered as <strong>the</strong> vector <strong>of</strong> filariasis in <strong>the</strong> Fiji Islands. After a careful follow up, he came<br />

to <strong>the</strong> conclusion that at best <strong>the</strong> numbers <strong>of</strong> <strong>the</strong> filaria carrier in Fiji can hardly be<br />

reduced by more than j per cent.<br />

The breeding places <strong>of</strong> Toxorhy~zcMes are usually vegetable ones, though occasionall><br />

larvae have been found in artificial breeding places.<br />

Aote. Females <strong>of</strong> Toxovhynchifes species are ra<strong>the</strong>r variable in colourational characters, Thus,<br />

closely related species and varieties are sometimes difficult to identify. Xoreover, <strong>of</strong>ten sexual<br />

differeiices exist in some species and larvae do not show strikin g characters to help in identification.<br />

Males are not so variable and are easier to recognize.<br />

Toxorhynchites splendens Wiedemann 1S19<br />

A large, beautiful mosquito with well developed lateral tufts <strong>of</strong> yellow, black and<br />

orange hairs on terminal abdominal segments and with <strong>the</strong> proboscis strongly curved<br />

downIvards and backwards in <strong>the</strong> middle, basal<br />

half rigid (Fig. 5b).<br />

ADULT. Female. Head with <strong>the</strong> scales<br />

brightly coloured: green and blue with purple<br />

reflections, a narrow pale border to <strong>the</strong> eyes;<br />

<strong>the</strong> stout basal portion <strong>of</strong> <strong>the</strong> proboscis purple<br />

or dark blue, palpi purple, about as long as first<br />

six flagellar segments <strong>of</strong> <strong>the</strong> antenna; antenna1<br />

hairs ra<strong>the</strong>r short, fine ancl sparse.<br />

z@y772<br />

I horax. Mesonotum with <strong>the</strong> scales greenish<br />

:<br />

A<br />

6<br />

a b<br />

Fig. j. Toxovlq~ucl~ites, details <strong>of</strong> adult :<br />

(17) win;; with T’-shaped thickening indicated br asterisk; (b) head <strong>of</strong> male showing curved proboscis.<br />

metallic on dorsal surface; <strong>the</strong> scales at <strong>the</strong> sides may be somewhat bluish, those on scu-<br />

tellum bluish green; afin covered with brassy scales ivith bluish reflections, or <strong>the</strong> scales<br />

are blue or green; p@z bluish above, silvery below, scales on pleura silvery. Wings with<br />

<strong>the</strong> membrane brownish, especially anteriorly; scales at base <strong>of</strong> wing deep blue or<br />

purple. Legs with front and mid-femora purple, pale golden ventrally and posteriorly,<br />

hind -pair mainly pale golden, purple dorsally on distal half; front tibia purple, with<br />

usually some pale golden scaling posteriorly, mid-legs with <strong>the</strong> tibiae mainly pale golden,<br />

purplish at base and apex; on hind pair <strong>the</strong> tibiae are purple, with greenish reflections;<br />

tarsal ;marlting T:ariable, t3-tj on front and hind tarsi dark, LI <strong>of</strong> front tarsi white, with<br />

dark basal ring and sometimes dark tip, a basal white ring on tz variable in width;<br />

ornamentation <strong>of</strong> tI-tj on mid-legs very variable: sometimes entirely white except<br />

for a dorsal dark mark at base <strong>of</strong> tI and a dark tip to t5; in some specimens <strong>the</strong> white<br />

markings reduced to a subbasal white ring on tr and a basal white ring on tz; tz <strong>of</strong> hind<br />

legs dark or with pale scaling, forming a more or less complete basal or subbasal band;

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!