. Bulletin of the Department of Agriculture. Agriculture. MEDITERRANEAN FRUIT ELY IN HAWAII. 95 Table XXVI.—Percentage of parasitism among larvae oj the Mediterranean fruit fly emerging during various periods after the gathering of the host fruit {coffee). Locality. 1752 Luso Street, Hono- lulu. Booth Estate, Pauoa Val- ley. Kealakekua, Kona dis- trict. Kainaliu, Kona Kahaloa, Kona Hookena, Kona Date of collection of fruit. •Oct. 21,- Dec. 8,1915 >Dec. 1,1915 June 18,1915 Oct. 30,1914 Oct. 31,1914 Date of larval emergence. [Oct. 21-23. •{Oct. 23-25. |O
. Bulletin of the Department of Agriculture. Agriculture. MEDITERRANEAN FRUIT ELY IN HAWAII. 95 Table XXVI.—Percentage of parasitism among larvae oj the Mediterranean fruit fly emerging during various periods after the gathering of the host fruit {coffee). Locality. 1752 Luso Street, Hono- lulu. Booth Estate, Pauoa Val- ley. Kealakekua, Kona dis- trict. Kainaliu, Kona Kahaloa, Kona Hookena, Kona Date of collection of fruit. •Oct. 21,- Dec. 8,1915 >Dec. 1,1915 June 18,1915 Oct. 30,1914 Oct. 31,1914 Date of larval emergence. [Oct. 21-23. •{Oct. 23-25. |Oct. 25-27. {Dec. Dec. 10-13. Dec. 13-16. Dec. 16-18. Dec. Number of pupaj yielding aJults or parasites. 37 34 52 256 338 609 258 76 5 15 21 33 46 46 65 107 240 125 64 52 36 86 79 Percentage of parasitism. Opius humilis. Dia- cbasma tryoni. 0 .6 0 0 63 56 0 17 0 0 0 0 .6 .1 0 0 60 13 0 0 19 0 0 Dia- chasma fullawayi. Total. 15 0 0 0 0 0 0 0 0 79 100 100 0 36 0 Resistance to cold-storage temperatures. —Indications are that Opius humilis can withstand greater cold for longer periods than can its host. Thus 5 O. humilis emerged from 2,500 C. capitata pupae after thej had been refrigerated for 9 days at about 26° F. Four lots of 1,200 pupae refrigerated at the same temperature for 5, 6, 7, and 8 days yielded on removal to normal temperatures 30, 32, 8, and 4 Opius. No adult C. capitata emerged from those pupae refrigerated J from 5 to 9 days, but from 1,300 pupae, refrigerated at about 26° F. I for a period of 4 days, 3 adults emerged along with 40 O. humilis. No adult C. capitata emerged from two lots of 1,900 and 4,500 pupae refrigerated for 9 and 10 days, respectively, at 32° F., but 7 and 13, respectively, of O. humilis emerged. From 1,228 pu
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