. Bulletin of the Department of Agriculture. Agriculture; Agriculture. MEDITERRANEAN FRUIT FLY IN HAWAII. 85 femora, but the tibiae and tarsi are more yellowish. Length of body, about 2 mm. For the original description see Bolletino del Labora- torio di Zoologia, Portici, volume 9, page 374 (1914-15). Egg.—The egg is pure white, about mm. long, and shaped as shown in figure 17, d. Larva.—The well-grown larva is white and grub-like, about mm. long (fig. 17, a). When viewed from above, spiracles are evident on segments 3-9 (fig. 17, b). The mandibles are microscopic (fig. 17, c). W
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. MEDITERRANEAN FRUIT FLY IN HAWAII. 85 femora, but the tibiae and tarsi are more yellowish. Length of body, about 2 mm. For the original description see Bolletino del Labora- torio di Zoologia, Portici, volume 9, page 374 (1914-15). Egg.—The egg is pure white, about mm. long, and shaped as shown in figure 17, d. Larva.—The well-grown larva is white and grub-like, about mm. long (fig. 17, a). When viewed from above, spiracles are evident on segments 3-9 (fig. 17, b). The mandibles are microscopic (fig. 17, c). When first hatched, larvae are about to mm. long. Pupa.—The pupa is about mm. long. (See fig. 18.) Silvestri was unable to keep adults of giffardii (or giffardianus ?) alive for more than 15 days. His original statement that the female deposits her eggs within the eggs or young larva of the host has been proved by Fullaway and the writers to be incorrect. Oviposition by T. giffardi- anus oocurs largely in the well-grown larvae as in the case of the Opiinae. The adult parasite will enter larval chambers and breaks in the host fruit in search of fruit-fly larvae as has been proved by the writers under laboratory conditions, and accu- mulating data seem to indicate that adults oviposit for the most part in larvae within fruit already fallen to the ground. Adults are capable of begin- ning oviposition as soon as they'emerge from the puparium of the host. The female does not neces- sarily make a new puncture in the epidermis of its host for each egg deposited; in one instance 41 eggs were deposited through 17 punctures. When the female comes upon a larva within a larval channel she deposits her eggs at points about its posterior portion, but when access to the larva can be had through a thin membrane of the host fruit, she may deposit her eggs in any portion of the body. The punctures in the epidermis are evident as small dark brown depressions. Of a total of 322 a
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