1919] Brues — Anopheles PuncHpennis in Northern New England 143 



THE OCCURRENCE OF ANOPHELES PUNCTIPENNIS 

 IN NORTHERN NEW ENGLAND. 



By Charles T. Brues, 

 Bussey Institution, Harvard University. 



On a visit to northern Maine during the past summer, I had the 

 opportunity to collect the larvae of several species of mosquitoes, 

 including Anopheles punctipennis, which has, so far as I can ascer- 

 tain, not previously been reported so far north as this district. 



In eastern Massachusetts where I have examined many localities, 

 A. punctipennis IS the most abundant and widespread Anopheles, and 

 it is listed from many localities in New England by Howard, Dyar 

 and Knab.^ These include several in southern New Hampshire 

 and one in Maine, while it has been found over the Canadian border 

 at Ottawa. The present specimens are from Telos Lake which lies 

 well toward the northern part of Maine in the region of spruce and 

 fir forests. It is a day's journey from the nearest railway on the 

 east and a two days' trip from the railway to the south, so that there 

 is no possibility of mosquitoes reaching the lake during the summer 

 to become established temporarily, and any occurring there can be 

 considered as permanent members of the fauna. I think there can 

 be no reasonable doubt that the larvae are actually those of A. 

 punctipennis. Although not to be distinguished anatomically from 

 A. quadrimaculatus, the habitat of the two species is rather con- 

 stantly quite different. 



Compared with Ottawa and Weld the position of Telos Lake is 

 as follows : 



Weld, Maine, Lat. 44° 12' North. 



Ottawa, Canada, Lat. 45° 25' North. 

 Telos Lake, Maine, Lat. 46° 7' North. 



In Europe the extreme northern limit of malaria, and probably 

 that of Anopheles also, lies at from 63° to 69° latitude while in 

 North America malaria is said to be endemic at scattered localities 

 as far north as the forty-fifth parallel. This would mean, of course, 

 the presence of Anopheles quadrimaculatus, the northern range of 

 which would thus appear to be nearly coincident with that of A. 

 punctipennis in New England at least. 



At Telos Lake, I secured also larvae of Culiseta impatiens Walker 

 and Culex restuans Theobald, both species of general occurrence in 

 this region. 



'Moaquitoea of North America, Vol. IV, pp. 1013 (1917). 



