AEDES AUREOSTRIATA 855 



hair-whorls; hairs of whorls long, black, not as dense as usual in males. Colora- 

 tion similar to the female. Abdomen elongate, dorsally depressed, lateral cilia- 

 tion of sparse irregular black hairs. Wings about as broad as in the female, the 

 scales less abundant. Claw formula, 2.0-2.0-0.0. 

 Length : Body about 3.5 mm, ; wing 2.5 mm. 



Genitalia (plate 33, fig. 219) : Side-pieces about twice as long as wide, tips 

 conically tapered ; apical lobe absent, basal lobe broadly conical, bearing a single 

 stout terminal seta. Clasp-filament long, slender, slightly enlarged at base, with 

 a long articulated terminal spine. Harpes elliptical, inner margins and tip 

 broadly thickened and revolute, end bent over. Harpagones wanting. TJnei 

 approximate, revolute, forming a stout basal cylinder. Basal appendages absent, 

 represented by a group of several stout setae on either side. 



Larva, Stage IV (plate 124, fig. 430). Head rounded, widest through eyes, 

 a slight notch at insertion of antennse, front margin broadly arcuate. Antennae 

 slender, moderate, uniform, a single hair near middle ; three short spines and a 

 digit at tip. Upper pair of dorsal head-hairs single, lower pair double, ante- 

 antennal hairs double. Mental plate broadly triangular, with a central tooth 

 and twelve on each side, the last small. Mandible quadrangular, slightly spined 

 at base ; a filament and three short ones before tip ; an outer row of cilia from a 

 collar; a dense row of long filaments on outer margin, the two basal ones 

 feathered ; dentition of four teeth on a process, the first longest ; a spine before, 

 a trifid tooth at base, a broad smooth filament and row of long feathered hairs 

 within; process below furcate, with a longitudinal median row of hairs and a 

 tuft at tip of each limb ; basal angle small, with a row of hairs within and a row 

 at base. Maxilla elongate conical, divided by a suture; inner half with a 

 rounded enlargement at base bearing two filaments at its tip and a row of 

 spinose hairs without, a row of cilia above on margin and a dense band within, 

 a row of coarse serrate hairs at tip ; outer half with two filaments near apex, a 

 spine on other side and a few hairs below ; palpus long and slender, two-thirds 

 as long as the maxilla, with four small apical digits. Thorax rounded, wider 

 than long. Abdomen moderate, anterior segments shorter; lateral hairs in 

 threes on first segment, in twos on second to sixth ; secondary hairs in stellate 

 tufts. Air-tube very stout, tapered on outer half, about twice as long as wide ; 

 pecten running beyond the middle, of few short stout spines, a small tuft just 

 within the last tooth ; single pecten-tooth a long spine with a small basal branch. 

 Lateral comb of eighth segment of about fifteen scales in a single row; single 

 scale elongate, rounded at tip, fringed with spinules. Anal segment as long as 

 wide, with a dorsal plate reaching over halfway down the sides, fringed with 

 long spines on posterior margin ; dorsal tuft a long hair and group of three 

 shorter ones on each side ; a lateral tuft of three long hairs at posterior angles 

 of plate ; ventral brush long but sparse, with a small triangular chitinous plate 

 on each side of barred area ; anal gills about twice as long as the segment, broad 

 and sack-like, bluntly rounded at tips. 



The larvae live in the water in bamboo-stumps and in tree-holes. Mr. Busck 

 found them in the former, Dr. Dyar in a hole in the trunk of a Eoyal Ponciana 

 filled by rain-water. 



Island of Santo Domingo and the Bahamas. 



San Francisco Mountains, Santo Domingo, September 3, 1905 (A. Busck) ; 

 Nassau, New Providence, Bahamas, March 1, 1915 (H. G. Dyar). 



AEDES AUREOSTRIATA (Grabham). 



Howardina aureostriata Grabham, Can. Ent., xxxviii, 171, 1906. 



HcBtnagogus aureostriata Dyar & Knab, Proc. Biol. Soc. Wash., xix, 167, 1906. 



Howardina inequalis Grabham, Can. Ent., xxxix, 25, 1907. 



Howardina aureostriata Theobald, Mon. Cullc, v, 609, 1910. 



Howardina inwqualis Theobald, Mon. Culic, v, 611, 1910. 



