292 



UNITED STATES NATIONAL MUSEUM BULLETIN 207 



Genera 180-185: Caudellia to Plodia 



[Venational division E. Forewing with 9 veins; 10 from the 

 cell; 9 absent; 4 absent; 2 and 3 from the cell. Hind wing with 

 discocellular vein curved. Male genitalia with transtilla com- 

 plete or its elements greatly enlarged. Female genitalia with 

 ductus bursae sclerotized for a considerable part of its length 

 and usually flattened.] 



180. Genus Caudellia Dyar 



Caudellia Dyar, Proc. Ent. See. Washington, vol. 6, p. 116, 

 1904.— Forbes, Cornell Mem. 68, p. 636, 1923. (Type of 

 genus: Caudellia apyrella Dyar.) 



Tongue well developed. Antenna pubescent; shaft 

 of male with a short, shallow sinus near base (as in 

 Moodna) . Labial palpus oblique, reaching to or slightly 

 above vertex, somewhat flattened laterally; third seg- 

 ment nearly as long as second (somewhat broadly scaled 

 and deflected forward in apyrella and albovittella) . Max- 

 illary palpus minute, filiform. Forewing smooth; 9 

 veins; vein 2 from before but rather near lower outer 

 angle of cell; 3 from the angle; 4 absent; 5 more or less 

 approximate to 3 at base; 6 from below upper angle of 

 cell, straight; 8 and 9 united (9 absent); 10 from the 

 cell, separated from 8 at base; male with costal fold 

 enclosing a scale tuft. Hind wing with vein 2 from well 

 before lower outer angle of cell; 3 and 5 connate, rarely 

 very shortly stalked; 7 and 8 anastomosed for most or 

 all of their lengths beyond cell (8 when present very 

 short) ; cell one-half or slightly less than half the length 

 of wing; discoceUular vein curved. Eighth abdominal 

 segment of male with compoimd dorsal tufts. 



Male genitalia with transtilla complete {dedivella) or 

 its elements broadened and often fused with arms of 

 gnathos. Aedeagus straight, smooth; penis with cor- 

 nutus developed as a weakly sclerotized, narrow, flat- 

 tened band, otherwise unarmed. 



Female genitalia with ductus bursae sclerotized for a 

 third or more of its length from genital opening; signa 

 present as a cluster of small, bluntly rounded, projecting 

 discs or spines more or less fused at then- bases; ductus 

 seminalis from bursa adjacent to signa (approximately 

 at middle of bursa) . 



This genus and the following genera with sclerotized 

 ductus bursae form a compact, strictly American group 

 closely related to and evidently derived from the 

 Moodna-Vitula complex. The moths of Cavdellia also 

 resemble Moodna in color and maculation and male 

 antennal structures. The species differ markedly from 

 each other in male genitalia. On labial palpi they 

 divide into two groups: 



Palpus somewhat broadly scaled and third segment deflected 



forward. 

 Palpus slender and third segment not deflected. 



The deflection of the third segment in our two species 

 from the Eastern United States is rather slight and does 

 not give the palpus nearly so pronouncedly porrect an 

 appearance as, for example, that of Plodia, and I do not 



believe justifies any generic separation of the two 

 species groups. 



Genus Caudellia, Species 602 and 603: C. apyrella 

 and C. albovittella 



[Labial palpus somewhat broadly scaled and third segment de- 

 tected forward.) 



602. Caudellia apyreUa Dyar 



Figures 122, 613 



Caudellia apyrella Dyar, Proc. Ent. Soc. Washington, vol. 6, 

 p. 116, 1904.— Forbes, Cornell Mem. 68, p. 636, 1923.— 

 McDunnough, Check list. No. 6376, 1939. 



Forewing vinous brown overlaid with blackish brown, 

 the blackish shading most obvious at apex; a faint pale 

 patch on outer third of costa; transverse lines and discal 

 spots obscm-ed, the antemedial line very faintly indi- 

 cated, oblique, pale vinous brown. Hind wing whitish, 

 faintly tinted with fuscous; veins not appreciably 

 darkened. Alar expanse, 14-15 mm. 



Male genitalia with gnathos terminating in a stubby, 

 angulate projection; harpe simple. 



Type locality: Plummers Island, Md. (type in 

 USNM). 



Food plant: Unknown. 



Known only from the type (c?, July) and paratype 

 (cf , June) from the type locality. 



603. Caudellia albovittella Dyar 



Figure 1103 



Caudellia albovittella Dyar, Proc. Ent. Soc. Washington, vol. 6, 

 p. 116, 1904.— Forbes, Cornell Mem. 68, p. 636, 1923.— 

 McDunnough, Check list. No. 6377, 1939. 



Forewing vinous brown shaded with blackish brown, 

 the blackish shading less diffused than in apyrella, con- 

 centrated as a dark median streak at base, a dark blotch 

 on outer side of antemedial line and a fainter shade at 

 apex; antemedial line oblique, strongly contrasted, 

 white, preceded by a short white dash on iimer margin; 

 subterminal line obscure, distinguishable on fresh speci- 

 mens as a thin irregular pale line near termen; discal 

 dots faint, blackish, separate; terminal dots confluent. 

 Hind wing pale fuscous, veins very slightly darkened. 

 Alar expanse, 13-21 mm. 



Male genitalia not distinguishable from those of 

 apyrella. Female genitalia with ductus bursae scler- 

 otized for slightly less than half its length from genital 

 opening; signa a double line of 6 to 8 short discs, close 

 together and fusing at their bases. 



Type locality: Plummers Island, Md. 



Food plant: Unknown. 



Distribution: Maryland, Hyattsville (July), Plum- 

 mers Isl. (June, July) ; Missouri, St. Louis (Aug.) . 



Probably not specifically distinct from apyrella which 

 may be only a suffused color form or food-plant race; but 

 as nothing is known of the biology and no females cor- 

 responding to the males of apyrella are available for 

 genitalic comparison, the two will have to be kept as 

 separate species for the time being. 



