74 WILLIAM T. M. FORBES 



the ovipositor has not been examined. The genera of this family 

 are repealed in the key to the Tineid;e for convenience in identification. 



Key to the r/cncra 



1. Antenna 1 at least a fourth longer than fore wings. 



2. R and M, of hind wing stalked 8. Nemotois. 



2. M! free from R, sometimes closely associated with M. 7. Adela. 



1. Antenna 1 hardly if at all longer than fore wings. 

 2. Maxillary palpi very short and porrect, or absent. 



3. Tongue strong, labial palpi moderate 7. Adela. 



3. Tongue obsolete, labial palpi minute 4. Chalceopla. 



2. Maxillary palpi well developed, folded, usually covering base of tongue. 

 3. Folded part or maxillary palpus two-thirds as long as width of head. 

 4. Females (with exserted ovipositor). 



5. Maxilla with a long, thick, naked, coiled tentacle besides palpus and 



tongue 2. Tegeticula. 



5. Maxilla with a sharp angle on second joint of maxillary palpus only. 



1. Prodoxus. 

 4. Males, (with large claspers). 



5. Valve one-fourth as long as fore wing 1. Prodoxus. 



5. Valve less than one-sixth as long as fore wing 2. Tegeticula. 



3. Folded part of maxillary palpus half as long as width of head. 



4. Venation complete 3. Incurvaria. 



4. Fore wing with a vein lost. 



5. Hind wing with 7 veins, lanceolate, with open cell 6. Eudarcia. 



5. Hind wing broader, with complete, normal venation. . .5. Paraclemensia. 



1. PRODOXUS Riley 



Similar to Tegeticula, male with larger valves; female with only a rudiment 

 of the maxillary tentacle. Caterpillars boring in Yucca, our species in Y. fila- 

 inentosa; much like Pronuba but without thoracic legs or projections representing 

 the abdominal legs. Pupa fairly smooth, with spine-patches, and an anterior, 

 toothed ridge on each segment. Pupa transforming in a silk cocoon at the mouth 

 of its burrow ( fig. 44 ) . 



1. P. quinquepunctella Chambers. Cream white, typically with about five black 

 points, but in var. decipiens Riley immaculate. 15-20 mm." (H. p. 438 f. 255-259.) 



Common. The caterpillar bores in the flesh of the fruit and fruit-stalk 

 of Y. filament osa, emerging a little earlier than Tegeticula yuccasella. 



Central New Jersey to Missouri and south. 



2. TEGETICULA Zeller 



(Proniiba Rile}- 1872, not Thomson 1860; Valentinia Coolidge 1909, not 



Walsingham 1909) 



Antennae smoothly scaled, the scaling not regularly formed of two whorls to 

 a segment; scales easily lost, uncovering the fine, chitinous spinules; palpi 

 rather small and slender, upturned, with scales and bristles, the basal segment 

 decidedly the longest; maxillary palpi folded, five-jointed, the first joint very 

 long; vertex roughly hairy. The female with a long, roughly spinulose, coiled 

 tentacle growing out from the junction of the first and second joints of the max- 



