INSECUTOR INSClTlvi; MENSTRUUS ' 99 



Aedes varipalpus Coquillett. 



The western tree-hole species occurs both in lowland and the 

 mountains. Specimens have been recorded from Seattle in 

 the monograph and I met with it commonly at Lake Cushman, 

 in the Olympics. A larva was found at Longmire Springs, 

 June 11, in water in a sawed-ofif stump. 



Aedes aboriginis, new species. 



Head and mesonotum with dark yellow or brownish yellow 

 narrow curved scales ; a double line of small dark brown ones 

 dorsally ; traces only of the posterior lateral lines ; area around 

 antescutellar space golden. Abdomen black with basal seg- 

 mental narrow white bands, triangularly widened at the sides, 

 narrow posteriorly ; venter grayish white scaled, with traces 

 of a medioventral black stripe. Legs black, femora whitish 

 beneath nearly to tip ; tibire with a sprinkling of gray scales ; 

 knee-spot white. Wing-scales black, the scaling uniform, fine 

 outstanding scales on the third vein like the rest. 



In the male, the medioventral stripe of the abdomen is dis- 

 tinct, crossed by apical segmental black bands. 



Genitalia (See Plate II). Apical lobe of sidepiece small, 

 with slightly curved, partly appressed setse; basal lobe large, 

 expanded, tubercular, setose, the setae very long and dense on 

 the lower edge, concealing a moderately stout curved spine, 

 not longer than the setse. A thickened area between basal 

 lobe and base, punctured by the insertions of small setse. 

 Stem of harpago moderate, the filament rather short, fusiform, 

 with pointed curved tip. This is essentially as in hexodontus. 



Larva (See Plate II). Scales of the lateral comb about 20, 

 each with a row of apical spines. Air-tube with the pecten 

 evenly spaced, followed by a 5-haired tuft. Anal segment not 

 ringed by the plate, the plate reaching near the ventral line and 

 evenly margined. Head hairs: Upper in threes, rarely fours; 

 lower in threes, rarely in twos. Ante-antennal tuft of eight. 



Types, male and female. No. 21544, U. S. Nat. Mus. ; bred 

 from larvse found the middle of June, in the last stage, but 

 with few pupse, in temporary puddles on the marsh and in 

 woods-pools near the marsh, Longmire Springs, Mount 



