MOSQUITOS OF THE PALAEARCTIC REGION. 325 



35. Aedes (Stegomyia) albopictus (Skuse). 



Culex albopictus, Skuse, Ind. Mus. Notes iii, p. 20 (1895). 



Stegomyia scutellaris, Theobald [nee Walker), Mon. Cul. i, p. 298 (1901). 



This is the only species of Aedcs in the Palaearctic region in which the front and 

 middle claws of the female are not toothed ; it cannot however be removed from 

 the genus, or even from the subgenus Stegomyia, with which it agrees in all other 

 respects. The silvery line down the middle of the mesonotum will at once differentiate 

 it from all other mosquitos in the region except A. cretinus, its Mediterranean 

 representative. 



The larva has been described and figured by Banks (Phil. J. Sci. A, iii, 1908, 

 p. 246) but he omits to notice the structural difference from A . argenteus in the shape 

 of the comb-teeth. 



Distrihntion. — A common semi-domestic species throughout the Oriental region, 

 occurring in Japan in the neighbourhood of Tokio {Yamada) ; Mt. Takao, near Hachioji 

 and Kofou (Paris Museum) ; Yokohama and Kobe, also Shanghai (Lamborn). It 

 occurs also in Madagascar and Reunion. 



36. Aedes (Stegomyia) cretinus, sp. n. 



Closely allied to A. albopictus, Skuse, but differs as follows : — A pair of small 

 round spots of white scales in the middle of the mesonotum, a little in front of the 

 wing-roots level with the posterior end of the central white stripe. Abdomen with 

 very distinct white basal bands on segments 2-7, somewhat narrowed in the middle. 

 Fourth hind tarsal joint darkened only at the extreme tip. Front and middle claws 

 toothed. As in A. albopictus, the front and middle femora have a narrow line of 

 white scales towards the base anteriorly, but no median white .spot. 



A single female in Herr Lichtwardt's collection, labelled " Creta. v. O. Cidex 

 calopus, Mg." Since, apart from the toothed claws, there are slight differences from 

 both A. albopictus, Skuse, of the Oriental region, and A. imilineatus, Theo., of Africa 

 and the Punjab, it is more likely that we are dealing with a distinct Mediterranean 

 representative of A . albopictus than that there has been any error in labelling. 



A second female is in the Buda-Pest Museum from Amari, Crete, 4. vi. 1906 (Biro) ; 

 the abdomen and claws agree with the type, but the mesonotum is rubbed and the 

 hind tarsi missing. 



37. Aedes (Stegomyia) argenteus (Poiret) {Stegomyia fasciata). 



Culex argenteus, Poiret, Journ. de Phys. xxx, p. 245 (1787). 



Culex fasciatus, Fabricius, Syst. Antl. p. 36 (1805). 



Culex calopus. Meigen, Syst. Beschr. i, p. 3 (1818). 



Culex konoupi, BruUe, Exp. Sci. de Morfee, Zool. iii, p. 289 (1836). 



(?) Culex niveus, Eichwald, Reise Casp. Kauk. ii, p. 183 (1837). 



Culex elcgans, Ficalbi, Bull. Soc. Ent. Ital. xxi, p. 95 (1889). 



Culex albopalposus, Becker, Mitt. Zool. Mus. Berhn, iv, p. 80 (1908). 



Culex angustealatus, Becker, Mitt. Zool. Mus. Berlin, iv, p. 79 (1908). 



? Culex aegypti, Linnaeus, Hasselquist's Reise nach Palestina, p. 470 (1762). 



The yellow fever mosquito is widely spread, though apparently nowhere very 

 abundant, in the warmer parts of the Palaearctic region. It occurs on the Atlantic 

 islands, in Portugal, and all round the Mediterranean coasts. In the eastern 

 Mediterranean it is by no means confined to the coasts, since Barraud has found it 

 to be common at Aleppo. Further east it is known from Mesopotamia, Persia, and 

 Japan . 



Eichwald says of Culex niveus, which he records from Tiflis and Baku, "in 

 unzahliger Menge abends in den Zimmern bemerkt werden." This, together with 

 his " thorax nigro alboque varius, alba pube obsitus" and "pedibus nigro canoque 

 varus," seems io SMggGsi Aedes argenteus, but other parts of the description(" alis 



