sHT. 28 REVISION OF DISONYCHA XOKTH OF MEXICO BLAKE 39 



Mr. Schaeffer has described as D. qu'mqueiutata the paler, smaller, 

 southwestern variety that corresponds with the Arizona specimens 

 of furtiata in the LeConte collection. He has also described as D. 

 lodingi a paler form that occurs in Alabama. Neither the small, 

 southwestern arid country form nor the larger Alabama form is 

 separable by any structural differences from the Texas specimens. 

 The aedeagi of all three are indistinguishable. I have, however, 

 retained Mr. Schaeffer's names as varietal names for these color 

 forms. The food plant in the West is Aster spinosits as recorded 

 by H. R. Brisley,-^ and H. P. Loding has collected it in Alabama 

 on a species of wild aster. 



DISONYCHA FUMATA rar. QUINQUERUTATA Schaeffer 



Plate 4, Figure 19 



Disonycha quinqnerutata Schaeffer, Journ. New York Ent. Soc, vol. 27, p. 336, 



1919 (Bill Williams Fork, Ariz.; type, U.S.N.M. No. 42419). 

 Disonycha Carolina Buisley, Trans. Aiiier. P^nt. Soc, vol. 51, p. 175, 1925. 



Deset^ption. — Smaller and paler then typical specimens of fumata^ 

 with pronotal spots not so closely placed and undersurface paler. 

 Length, 5.7 mm. 



Type and one paratype in the United States National Museum. 



Type locality, — Bill Williams Fork, Ariz. 



Distribution. — Arizona (Bill Williams Fork, Clemenceau, Douglas, 

 Florence, Fort Yuma) ; New Mexico (Albuquerque) ; southwestern 

 Utah; California (El Centro, Meloland). 



DISONYCHA FUMATA var. LODINGI Schaeffer 



Plate 4, Figure 18 



Disonycha lodingi Schaeffer, Journ. New York Ent. Soc, vol. 27, p. 837, 1919 

 (Delchamps, Ala.; type, U.S.N.M. No. 42421). 



indistinctly punctate ; sutural, median, and submarginal dark vittae not so wide as pale 

 intervening vittae, the submarginal and sutural vittae sometimes uniting at apex. Body 

 t>eneath finely pubescent, pale, tlie middle of metasternum, area about coxae, and most of 

 the tibiae and tarsi dark. Length, 7.5 to 7.8 mm ; width, 4 mm. 



Type male and three paratypes, U.S.N.M. No. 43651. 



Type locality. — Tcapa, Tabasco, Mexico, cxjllected in March by H. H. Smith. 



Distribution. — Known only from the type locality. 



Remarks.— Thia species is labeled D. horni by Jacoby in the Biologia material in the 

 National Museum, in the Museum of Comparative Zoology, and in the British Museum, and 

 these specimens seem to be paratypes of D. horni Jacoby. The typiflcation of Jacoby's 

 name has been discussed above. 



D. tcapensis belongs to the alternata group, having a similar uneven pronotum and 

 traces of elytral costae in the female. It most closely resembles D. pluriUyata var. purn. 

 a Sonoran form. D. tcapensis, on tlie other hand, comes from the lowlands of sout' east- 

 ern Mexico. It is slenderer than pluriliuala, the head is smoother, and the aedengus has 

 a broadly pointed tip, which is broader than in any of the other species in that group 

 possessing an acute tip. 



^ Brisley, Trans. Amer. Ent. Soc, vol. 51, p. 175, 1925. The specimens on which this 

 record was based, listed by Brisley as " Carolina ", have been examined by the writer and 

 found to be D. fumata. 



