66 INSECUTOR INSCITI^ MENSTRUUS 



Pood Plant: "Loosestrife." Larvse rolling the terminal 

 leaves. 



Type: Cat. No. 22113, U. S. Nat. Mus. 



Described from three specimens (2 males and 1 female) 

 submitted by Dr. E. P. Felt under N. Y. S. No. A2726, with 

 request for a name. Male type and female paratype in U. S. 

 National Museum. One male paratype returned to New York 

 State collection. 



The species is close to and resembles very strikingly O. cya- 

 nana Murtfeldt. It differs in color of the palpi and thorax 

 and in genitalic characters. In cyanana the palpi and thorax 

 are a nearly uniform smoky fuscous without the ochreous 

 scaling of the new species. The male genitalia of the two are 

 strikingly different. O. approximana has a prominent, elon- 

 gate, strongly chitinized suhscaphtm (Ss), and a heavily chiti- 

 nized gnathos (G) with a long, spatulate central lip. In 

 cyanana the subscapium is indistinguishable and the gnathos, 

 as in most Olethreutidae, is merely a weakly chitinized band, 

 surrounding the anus and arising from the tegumen well back 

 from the rudimentary uncus (U). In place of the spatulate 

 central tip of approximana there is a loose, thin, apron-like 

 flap. The tegumen (T) and harpes (H) of the two species 

 are also differently shaped. (Compare figures on Plate I.) 



ON SOME NEW IDOLOTHRIPID^ 



(Thysanoptera) 



By J. DOUGLAS HOOD 



The present paper had its beginning several years ago in 

 what was planned to be a synoptic account of the entire family. 

 The publication by various authors, however, of the principal 

 facts which the writer proposed bringing out, particularly with 

 reference to terminology and synonymy, has left very little, 

 indeed, worthy of presentation except the descriptions which 

 follow. The two new genera and three new species described 

 below are from the Ethiopian and Oriental faunal regions. 



