86 



below middle of discocellulars (quadrifed) 6 and 7 (M^ and R) short stalked 

 from upper angle, 8 anastomosing with cell to near middle. 



H. idella, originally described as a Cerathosia seems to have caused 

 some trouble in classifications. It was questionably placed as a Cera- 

 thosia by Sir George Hampson, 1910, Cat. Lep. Phal. B. M., X, 643. 

 It was removed in the Check List Lep. Boreal Amer., B. & McD., 1917, 

 to Spragueia. Here it cannot remain because the veination of the 

 secondaries is quadrifed; and not tried with 5 (Mj) obsolescent. The 

 frontal prominence is so poorly developed that //. idella might almost 

 be considered congeneric with the African genus Pseudosterrha ; but as 

 there are no described Erastrian genera from the Boreal America pos- 

 sessing an aerole, with smooth front and untufted abdomen, the authors 

 prefer to consider the frons as rounded out, especially as it is rough- 

 ened. Also Pseudosterrha has the apex of the fore wing produced 

 and the wing itself more or less trigonate, whereas in H. idella the 

 apex is rounded and the primaries elongate. Such a combination of 

 characters would place the insect remarkably close to the genus 

 Tarache; but an entirely different habitus and minor structural char- 

 acters seem to render a new genus desirable. From Tarache, the new 

 genus may be distinguished by the simple antennae in both sexes, 

 shorter palpi, less curvature to the front, smoother scaling and lack 

 of crests on the thorax, from the largest group of Tarache by the 

 stalking of veins 3 and 4 (Cuj and M3) on the secondaries and from 

 all known species of Tarache by the stalking of veins 6 and 7 (Mj 

 and R) of hind wing. This last character coupled with the elongate 

 primaries immediately separates Hemispragueia from Tarache. 



The new genus is placed after Tarache because of the structural 

 characters mentioned above but this separates it from apparently closely 

 allied genera, Cerathosia and Spragueia ; an unfortunate circumstance, 

 but one which often occurs due to a list of species or genera only hav- 

 ing the dimension length, whereas phylogeny branches in all directions. 



NOTODONTIDAE 



Heterocampa cubana Grt. 



1865, Grote, Proc. Ent. Soc. Phila., V, 252, pi. IV, f. 7, Heterocampa; 

 1918, B. & McD., Contr. Nat. Hist. Lep. N. A., IV, #2, 128. pi. XX, f. 14, 



Heterocampa; 

 1$21, Dj'ar, Ins. Insc. Mcnst., IX, 139, DispJtragis. 



