65 



Parker (J. R.). Notes on the more common Mosquitos of Montana. 



— Fourteenth Annual Report of the State Entomologist of Montana ; 

 Montana Agric. Expt.Sta., Bozeman, Bull. no. 112, December 1916, 

 pp. 69-75. [Received 2nd January 1918.] 



The great majority of the Montana mosquitos belong to the genus 

 Aedes and hibernate in the egg-stage, hatching taking place at various 

 intervals during the following season under the influence of snow water, 

 or of spring or summer rains. The eggs, which are laid on the ground, 

 do not necessarily all hatch at the first flooding, and newly emerged 

 larvae may appear at subsequent floodings. A. curriei, Coq., is one 

 of the most abundant, most widely distributed, and most virulent of 

 the Montanao msquitos, occurring in the river valleys and plains and 

 hatching throughout the late spring and summer months whenever 

 the necessary moisture is j)resent ; the larval period lasts from 5 to 

 7 days and the pupal period 2 to 3 days. The adults are voracious at 

 all times, except when forced into inactivity by low temperatures or 

 high winds. A. sylvestris, Theo., occurs in much the same localities as 

 A. curriei, but in smaller numbers, the adults biting severely both by 

 day and night. A. nigromacitlis, Ludl., is another troublesome species, 

 especially towards nightfall, occurring abundantly in some locahties, 

 but being much more restricted in range and in numbers than the two 

 previous species. A. spenceri, Theo., bites severely both by day and 

 night and has been found in similar localities. A. pullatus, Coq., is 

 extremely annoying in several of the higher mountain valleys, where it 

 has been taken in timber, but is not widely distributed. Other species 

 which occur in small numbers and are not of much economic 

 importance include A. campestris, D. & K., A. fletcheri, Coq., 

 A. idahoensis, Theo., A. hirsuteron, Theo., and A. fuscus, O.S. 



The species of Montana mosquitos belonging to the genus Theohaldia 

 (Cultseta) seldom occur in such numbers as to be troublesome 

 T. inornata, Willis., T. incidens, Thomps., T. impatiens, Walk., and 

 T. alaskaensis, Lind., all pass the winter in the adult stage, the eggs 

 being laid directly in the water in more or less permanent pools. 



Only two species of the genus Culex, C. tar satis, Coq., and 0. territans, 

 Walk., the former of which is stated to bite at night, occur in Montana. 

 They are continuous breeders in more or less permanent pools, where 

 the eggs are deposited directly in the water and hatch during the same 

 season. 



There are only three records of the occurrence of an Anophehne 

 mosquito, viz., Anopheles occidentalis, D. & K. 



ScHOPPE (W. F.). Control of Poultry Lice and Mites. — Univ. Montana 

 Agric. Expt. Sta., Bozeman, Circ. 64, February 1917, pp. 65-71, 

 6 figs. [Received 2nd January 1918.] 



Infestation of poultry with Dermanyssus gallinae (poultry mite), 

 which is far more harmful than the louse, is induced by want of 

 sanitation and cleanliness. A satisfactory spraying solution consists 

 of 4|- gals, water, 1 quart Zenoleum, 1 quart kerosene, and this should 

 be apphed with a stifE brush or force pump so as to reach all crevices. 



Menopon pallidum (poultry louse) is specially harmful to young 

 chicks, occurring on the head and under the wings, while in the adult 



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