74 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



Male. — Length 3 mm. Clypeus more obtusely emarginate than in female; third 

 joint shorter than fourth; stigma not strongly tapering; hypopygidium narrowly rounded 

 at apex. Black; antennae, head (except interocellar area), margin of mesoprescutum, 

 lati, pectus, legs, and venter reddish yellow; wings as in female. 



Type locality. — Suisun, Cal., March 10, 1910 (R. W. Braucher); eight females and 

 one male. 



Type. — Catalogue No. 13471, U. S. National Museum. 



On April 20, 1909, while inspecting the cherry orchard of Mr. 

 Charles Barnes, Suisun, Cal., for the extent of injury caused by the 

 pear thrips, the writer found several cherries infested with small 

 white hymenopterous larvae. The full-grown larvae were about five- 

 sixteenths of an inch long and apparently did most of the feeding 

 inside of the kernel, or in the flesh immediately adjoining the kernel. 

 Although the cherry crop was light the injury was quite general, and 

 further search on April 25 showed the little larvae in greater or less 

 numbers in most of the cherry orchards of the Suisun Valley. A 

 large series of counts made of the fruit in Mr. Barnes's orchard 

 showed approximately 80 per cent of the fruit to have been injured 

 by these larvae. 



At this latter date, April 25, most of the larvae were full grown. 

 Some had evidently finished feeding and had left the fruit. How- 

 ever, careful search in the ground under the trees failed to show the 

 presence of any larvae or pupae. A large quantity of infested fruit 

 (See PL IX, figs. 1, 2) was taken to the laboratory for further study 

 and life-history observations. 



SEASONAL HISTORY AND HABITS. 



All of the larvae in the rearing cages had left the fruit and had 

 gone into the soil in the bottom of the cages by May 5, 1909. None 

 of them pupated among the sticks and trash which had been placed 

 in the cages on top of the soil. The cages were sunk in the ground 

 to approach as nearly as possible the normal out-of-doors conditions. 

 Unfortunately all of these larvae were killed by drainage water from 

 a near-by sink seeping into the cage during the absence of the writer. 



In June, 1912, the writer received from Mr. P. J. O'Gara, Medford, 

 Oreg., a consignment of cherries showing the characteristic injury 

 caused by this species. Mr. O'Gara stated that he had observed 

 the larvae in a few orchards in one locality in Jackson County, Oreg., 

 and that this insect also attacked prunes. 



So far as the writer has learned this is the only occurrence of the 

 cherry fruit sawfTy outside of the State of California. 



THE ADULT. 



Close watch was kept in the spring of 1910 for the first appearance 

 of adults in the field. Mr. K. W. Braucher, who was detailed to 

 look after the demonstration spraying for pear thrips in that locality 



