676 PROCEEDINGS OF THE NATIONAL MUSEUM vol. U4 



47. Acrolophus macrophallus, new species 



Figures 214-216 



Male. — Similar to variabilis in general habitus, but somewhat 

 smaller. Head pale ochreous. Labial palpi of intermediate length, 

 ochreous suffused with fuscous, erect, extending well above head, 

 basal extremities appressed to head and to each other, major portions 

 well separated from head and from each other, each segment heavily 

 clothed with scales developing into prominent tuft along anterior 

 margin, segmentation clearly visible despite vestiture. Eyes large, 

 protruding, sparsely and finely setose, without lashes. Antennae 

 simple, laminate, ochreous, covered dorsad with scales, segmental 

 processes set closely together throughout antennae. Thorax ochreous 

 fringed with fuscous and white. Forewings brown, marked with 

 dark brown and ochreous, pattern variable; markings commonly 

 consisting of alternate light and dark bars along apical half of costa, 

 ochreous streaks beneath costa and fold, and dark bars in cell and on 

 fold. Hindwings and fringes glossy brown. Abdomen brown. Wing 

 expanse: 17 to 23 mm. 



Female. — Coloration similar to that of cf , pattern variable as in cT. 

 Labial palpi somewhat shorter than in cf , directed forward and down- 

 ward, closely appressed to each other, heavily clothed with scales, 

 segmentation largely obscured by vestiture. Eyes essentially same as 

 those of cf . Antennae simple, slender, segments entirely encircled 

 by scales. Wing expanse: 22 to 29 mm. 



Male genitalia. — Vinculum large, elongate, ventral surface pro- 

 duced considerably caudad. 



Tegumen with lateral arm glabrous, greatly elongated, basal half 

 articulating with vinculum very slender, apical half gradually widen- 

 ing caudad; dorsal area of medium width, glabrous, indistinctly 

 fusing with base of uncus. 



Harpe simple. Lateral aspect: sublinear, slender, greatly elongated, 

 closest to that of variabilis. Costa and sacculus fused, comprising 

 approximate basal two-thirds of harpe, glabrous except for punctate 

 and setose ventrocaudal margin of sacculus, apical third evenly ex- 

 panded somewhat ventrad and markedly dorsad, central third becom- 

 ing narrow and attenuated basad basal third narrow but somewhat 

 expanded dorsad and ventrad slightly before basal extremity, ental 

 area from base to apex produced dorsad in form of weakly sclerotized 

 expansion extending somewhat beyond arm of transtilla and basal 

 two-thirds of costa. Cucullus indistinctly fused with costa and saccu- 

 lus, rather short and slender, punctate and setose, approximate basal 

 third slender, apical two-thirds gradually and evenly expanding ven- 



