NORTH AMERICAN ACROLOPHIDAE — HASBROUCK 671 



Paratypes (8 cf cf). — California Academy of Sciences (1 cf); U.S. 

 National Museum (7 cfcf). 



Type locality. — Baboquivari Mountains, Pima Co., Ariz. (Aug. 

 15-30, 1924, O. C. Poling). 



Distribution. — Southwestern United States. Southern Arizona. 



Specimens examined. — 9 (all cf cf), from 2 localities: 



Arizona: Baboquivari Mountains, Pima Co., 3 cf cf (July 15-30, 1923, eleva- 

 tion 5000 to 7000 feet, 0. C. Poling), cf (Aug. 1-15, 1923, Poling), 2 c? d' (July 

 1-15, 1924, Poling), 2 cf cT (Aug. 15-30, 1924, Poling); Pinal County, "14 miles 

 east of Oracle," 6" (July 27, 1924, E. P. Van Duzee). 



Remarks. — This species undoubtedly ranges southward into Mex- 

 ico. Due to the characters selected for the construction of my key, 

 A. seciUatus is represented there as related to those species having 

 shortened labial palpi, naked eyes, simple antennae with segments 

 encircled by rings of scales, simple uncus, and fused gnathos. How- 

 ever, seculatvs exhibits so many affinities with the vanabilis-macrophal- 

 lus-vauriei species group that it should be considered a fourth member 

 of the latter. This species group, characterized in the key and in the 

 remarks on the following species, variabilis, falls within that general 

 series of acrolophids having a type of antenna in which each segment 

 is clothed only dorsad or dorsolaterad with scales. Since each antennal 

 segment of seculatus is completely encircled with one ring of scales, 

 this species and its related group emerge at different points in the key. 



A. seculatus is probably less closely related to variabilis, vauriei, and 

 macro'phallus than are the latter three to one another. In addition to 

 the dijfference in antennal vestiture mentioned above, seculatus may 

 be easily distinguished from its closer relatives on the basis of its 

 considerably smaller size, the shape of its harpe, and its oddly sickle- 

 shaped aedeagus. The various characters of the genitalia are both 

 consistent throughout my small series of seculatus and distinct from 

 those of all the other species treated in this work. 



Superficially, seculatus perhaps most closely resembles pyramellus in 

 size and general habitus, although the two may also be separated by 

 external characters. The antennal scales of seculatus are short and 

 extend less than half the length of each segment while the antennal 

 scales of pyramellus are long and extend more than half the length of 

 each segment. Further, the ventral vestiture of the labial palpi of 

 seculatus is heavier and more tuftlike than it is in pyramellus. 



Among the specimens received from Cornell University is a single cf 

 specimen labeled "Sanderson, Texas, May 16, 1918, J. Ch. Bradley" 

 and a microscope slide mount, presumably of its genitalia. Exter- 

 nally, this moth agrees very closely with my series of specimens from 

 Arizona representing seculatus. However, the genitalia in the accom- 

 panying sHde mount, although undoubtedly belonging to Acrolophus, 



