NORTH AMERICAN ACROLOPHIDAE — HASBROUCK 679 



Kemarks. — This species has been recorded ahnost exclusively from 

 southern Arizona. It undoubtedly ranges southward into Mexico. 

 A. macrophallus is closely related to variabilis, seculatus, and vauriei, 

 forming with them a distinct species group. The members of this 

 group are bound together by similarities of cephalic structures, general 

 habitus, and genital structures. The group has been characterized in 

 the key and in the foregoing remarks on variabilis. 



A. macrophallus may be easily separated from its close relatives, as 

 well as from the other acrolophids treated here, on the basis of its 

 genitalia. As in variabilis, its entire genital capsule is markedly elon- 

 gate. The aedeagus of macrophallus is extremely elongate. In dried 

 specimens, this organ is invariably extruded from the tip of the abdo- 

 men, while its basal extremity commonly extends as far back into the 

 moth as the second abdominal segment. The vesica of the aedeagus is 

 armed at or near its apex with a large cornutus. The genital charac- 

 ters are consistent throughout my series of specimens representing 

 macrophallus. The name is descriptive of the extremely elongate 

 aedeagus exhibited by this species. 



48. Acrolophus vauriei, new species 



Figures 217-219 



Male. — Somewhat similar to variabilis in general habitus. Head 

 white sprinkled with fuscous. Labial palpi of intermediate length, 

 fuscous contrastingly suffused with w^hite, erect, extending consider- 

 ably above head, basal extremities appressed to head and to each 

 other, major portions weU separated from head and from each other, 

 each segment heavily clothed with scales developing into prominent 

 tuft along anterior margin, segmentation clearly visible despite vesti- 

 ture. Eyes large, protruding, naked or with several minute setae, 

 without lashes. Antennae simple, laminate, ochreous, covered dorsad 

 with bro^vn and fuscous scales, segmental processes set closely together 

 throughout antennae. Thorax white suffused with fuscous. Fore- 

 wings fuscous heavily suffused with contrasting grayish white, pattern 

 somewhat variable; markings in form of alternating light and dark bars 

 along fringe and apical half of costa, dark patch at outer end of cell 

 bordered on either side by grayish-white area, and dark patch beneath 

 center of fold bordered by grayish-white area extending from fold to 

 posterior margin. Hind\vings brown, fringes contrastingly grayish- 

 white streaked with brown. Abdomen dull brown. Wing expanse: 

 19 to 21 mm. 



Female. — Coloration similar to that of cf, but pattern less con- 

 trasting. Labial palpi slightly shorter than in cf, porrect, rather 

 closely appressed to each other, heavily clothed with scales, segmenta- 



676-573—64 13 



