PROC. ENT. SOC. WASH., VOL. 24, NO. 1, JAN., 1922 



females disclosed only some 20 to 40 rather large eggs in each 

 female, but it is possible that additional eggs may be formed 

 before egglaying begins. 



A technical description of the known stages follows: 



Larva (Plates 1,2, Figs. 1,2, 3, 4, 10) full grown 18-20 mm. long by 2-2.5 

 mm. wide. Ventral and ventro-lateral surface of body pale smoky grey white; 

 lateral area white, more or less suffused with pinkish and with occasional slight 

 suffusion of yellow, the white area extending in a continuous, clearly defined, 

 longitudinal band the length of the body and including the areas of the spiracle, 

 thoracic setae III, IV and V and abdominal setae IV and V; above the spiracle 

 a broad subdorsal longitudinal band of smoky black including all the setal areas 

 above the spiracles; along mid dorsum a rather narrow, sharply defined longi- 

 tudinal yellowish white strip faintly suffused with pink and dividing both the 

 thoracic and anal shields; chitinized areas about tubercles large, round or oval, 

 deep dull black; legs strongly chitinized with chitinized areas shiny jet black; 

 crochets of prolegs black, 26 to 30; chitinized attachment of proleg muscles in 

 prolegs black, conspicuous; thoracic and anal shields deep, dull black; body 

 setae moderately long, black; setae group VII on 9th abdominal segment con- 

 sisting of a cluster of several minute hairs; spiracles small, round, with chitin- 

 ized rim black. Head and chitinized areas of trophi shining jet black; an 

 irregular transverse white band extending across the top of the head and includ- 

 ing in its area setae A2, A3 and Adfl; ocellar lenses whitish. 



The presence of secondary hairs on some part of the body 

 coupled with the normal micro arrangement of three setae 

 (III, IV and V) on the prespiracular shield of prothorax and 

 of the close approximation of setae IV and V under the spiracle 

 on the pro-leg bearing abdominal segments appears to be 

 characteristic of the family Ethmiidae. In E. macelhosiella 

 the secondary hairs are limited to a small cluster in group VII 

 on the 9th abdominal segment. 



Pupa. (Plate 2, Figs. 7, 8, 9) 9.5 mm. long by 3 mm. wide at widest part; 

 dark brown, rather stout; somewhat flattened; abdomen laterally swollen 

 between abdominal segments 4 ami f-., widest at abdominal segment 5. With- 

 out spines or hairs of any kind, entire surface however finely and irregularly 

 corrugated (see Fig. 7a). Cephalic end rounded; vertex distinct, rather 

 narrow; labrum prominent; labial palpi very small; mandibles rather large; 

 maxillary palpi not reaching proximo-lateral angles of maxillae; maxillae less 

 than half the length of the wing cases; prothoracic and mesothoracic legs half 

 the length of the wing cases; antennae reaching to tips of wings; no femora 

 exposed; wings extending to anterior margin of fifth abdominal segment; 

 spiracles minute, round, not produced; caudal end of abdomen bluntly rounded, 

 bent under and appressed for last three segments; sutures between abdominal 

 segments 5-6 and 6-7 wide and deep; segments 8, 9, 10 narrow; abdominal 10 

 entirely ventral and flatly appressed. Anal prolegs (apl) with their crochets 

 present; anal and genital openings slit-like, the latter lying between the prolegs; 

 cremaster absent. 



