INJURIOUS INSECTS OF 1904. 19 



foot, twelve times enlarged, showing crown of hooks; Fig. 8, 

 freshly made cocoon, formed in flour, showing larva within, three 

 times enlarged; Fig. 9, one fore wing, showing venation, six 

 times enlarged ; Fig. 10, a hind wing, showing venation, six times 

 enlarged; Fig. 11, a freshly laid egg, enlarged twenty-five times. 

 The hind wings are thin, translucent and silvery. Both fore and 

 hind wings are heavily fringed. All the above figures refer to the 

 colored plate, not to the illustrations in text. 



The females are a little larger than the males, but the colora- 

 tion of the wings of both sexes is alike. The females have a char- 

 acteristic habit, upon emerging from the pupa, of remaining for 

 hours with tip of abdomen and head raised above the level of the 

 rest of the body; see Fig. 15 in the text. Egg laying, which lasts 

 several days, takes place, as a rule, immediately after copulation, 

 each female averaging about 200 eggs. These eggs may be placed 

 any~where, in cracks, in flour, in spouts, purifiers or other machin- 

 ery, in sacks containing flour or meal, in any place, in fact, to 

 which the moth has access. 



Fig. 7. — Larvae of Mediterranean Flour Moth, four times enlarged. Original. 



The larva, sometimes called "the worm" (see colored plate, 

 also Figs. 7 and 15 in the text), is about 1/25 of an inch when 

 first hatched, from white to pink in color, with a reddish brown 



