492 P. W. CLAASSEN 
The larva.— The larva of the first instar is shown in Plate XLIII, 40. 
The following description is taken from a larva about thirty minutes after 
its emergence from the egg: 
Length 1.19 mm., greatest width 0.28mm. General color light pinkish or flesh color. Head 
and thoracic shield mottled with darker brown, restricted in the thoracic shield to the posterior 
part. A dark mottled area on the dorsal surface of the last abdominal segment also. 
The full-grown larva (Plate XLIII, 41) is described thus: 
Length from 7 to 10 mm.; about 2 mm. at its greatest width. Much flattened, and in 
general shape much like Lymnaecia phragmitella. General color flesh color. No special 
markings on the body except, as in the first instar, on the dorsal surface of the first thoracic 
segment and on the last abdominal segment. Head dark brown, with darker blotches near 
the outer margin. Epicranial suture very dark brown. Prothoracic shield dark brown, 
slightly lighter than the head, with two oblique oval spots near the lateral margin, the 
shield being mottled near the posterior margin. Dorsal surface of the last abdominal seg- 
ment mottled with brownish patches or spots, as shown in Plate XLIII, 41. Larva easily 
distinguished from that of Lymnaecia phragmitella in that it does not possess the five longi- 
tudinal stripes on the dorsal surface of the body. 
The pupa (Plate XLIII, 44) 
Length 7-8 mm., width 2.9-3 mm. General color yellowish brown to dark brown. Front 
of head not visible from the ventral aspect. Clypeo-labral suture distinct. Labrum with 
an emargination and very small, appearing somewhat like an arrow head. Two long hairs 
on the clypeus. Wings extending two-thirds across the fourth abdominal segment. Maxillae 
extending to the wing tips. Maxillary palpi absent. Prothoracic femora visible. Pro- 
thoracic leg extending two-thirds the length of the maxillae. Mesothoracie legs reaching 
to the tips of the wings. Antennae reaching to a point halfway between the tip of the 
prothoracic leg and the tips of the maxillae. Metathoracic legs not visible. Cremaster 
subquadrate, nearly smooth, with six cqually long, hooked spines arranged in groups of threes 
on the outer angle of the cremaster. Rudiments of prolegs on segments 5 and 6 of the 
abdomen. General surface of the body smooth. 
The adult— The adult female, shown in Plate XLVIII, 81, measures 
6 mm. in length and has a wing expanse of 18 mm. Walker (1859) 
describes the adult as follows: 
Whitish, slightly marked with ferruginous. . . Antennae stout, submoniliform. 
Abdomen with brownish speckles. . . Legsstout. . . Fore wings with two reddish bands; 
the first exterior; the second marginal; the intermediate part with blackish speckles, which 
are somewhat confluent by the bands. 
