BIOLOGY OP PHILIPPINE CULICID^. 249 



In dwellings, these mosquitoes fly during the same hours of the day 

 as do S. persistans, but are to be encountered much less frequently. 



HtTLECOETOMTIA PSETIDOTAENIATA Giles. 



Stegomyia pseudotaeniata Giles, Journ. Bombay 'Nat. Hist. Soc, 1 3, 607. 



, The Entomologist (1901), 36, 192. 



Theobald, Mono. Gulie. (1901), 1, 312. 



Giles, Handb. of Gnats (1902), 379. 



Hulecoetomyia pseudotaeniata Theob., Gen. Ins., Gulic. (1905), 20. 



Banks, Philip. Journ. Sci. (1900), 1, 986. 



Huleeoeteomyia ' pseudotaeniata Tlieob., Mono. Oulic. (1907), 4, 219. 



This species, which liyes in pot-holes in the rocks along the banks of 

 rivers, may properly be considered a dry-season form owing to the fact 

 that only during the dry season could it breed in abundance in such 

 situations, as the water is then low and the rocks are fully exposed. 



Veiy little is loiown at present with respect to the life history of this 

 insect. 



Egg: The egg has not been found. 



Larva: The full-grown larva measures 7.5 to 8 millimeters. It is a very dark 

 gray, almost black, the epiderm.is being somewhat iridescent. 



The lateral thoracic setae are pectinate, and from three to five grow from 

 each tubercle. 



The pseudopoda are slightly less developed than in Stegomyia samarensis 

 Ludlow and 8. persistans Banks, which this species resembles very closely, both 

 as larva and as adult. 



The chief distinctive characteristic of this larva is the presence upon the 

 frontal dorsal area of the head of 4 palmate bristles, each being 9— 11-parted. 

 Dorsad to the base of the antennae on each side of the head is a 6-parted bristle. 

 The abdominal bristles are arranged much as in S. samarensis Ludl. 



The lateral comb of the eighth segment is remarkable in that its structure is 

 entirely unlike Stegomyia and closely resembles that of Culex lasarensis Felt, 

 described and figured by him from the State of New York.^ Not only does the 

 comb resemble that of 0. lasarensis Felt, but the pecten scales are almost identical 

 in shape and their number is only 5 less than that indicated in Felt's drawing." 

 Moreover, the siphon is provided with a 6-parted group of pectinate bristles at 

 the distal extremity of each row of pecten scales as indicated in Felt's drawing. 



The chitinous sclerite of the ninth segment has two rows of stout, dark spines 

 on its posterior border; subdorsally and ventrad to these is a single, long bristle 

 on each side. 



The anal tracheal gills are three times the length of the ninth segment and, 

 unlike any others that I have examined, are sharply conical, their surfaces 

 being dotted with minute annular spots as in Stegomyia samarensis. The dor- 

 sal anchor bristles are six, the ventral from fourteen to sixteen. 



HABITS OF THE LABV^. 



The larvaa subsist upon decaying vegetable matter found in the pot- 

 holes of the rocks in which they breed. They are very shy, hiding for a 

 considerable time under leaves when disturbed. 



'Sic. 



^N. Y. State Mus. Bull. (1904), 79, 310-311, fig. 48. 



'Idem (1904), 79, 311, figs. 50 and 51. 



