ON A COLLECTION OF THYSANOPTEFIA FROM PORTO RICO 153 

 Gynaikothrips uzeli Zimmermann. 



1900. Mesothrips uzeli Zimmermann, Bull. Inst. Bot. Buitenzorg, No. VII, 



p. 12; fig. 4, i-iv {"Gynaikothrips uzeli"), fig. 5, i, ii. 

 1 908. PMoeothripsficorum Marchal, Bull. Soc. Ent. France. 1 908. No. 1 4, p. 252. 



1910. Liothrips bakeri D. L. Crawford. Pomona Coll. Journ. Ent., Vol. II, 

 No. l.p. 161; fig. 67, A-D. 



1911. Gynaikothrips uzeli Karny, Centralb. f . Bakteriol.. Parasitenk., etc., 

 II Abteil.. XXX Bd., pp, 559, 560, 561, 562; figs. 1. 2. 5, 9, 13. 



Apr., 1912. [Mesothrips (?)] bakeri Hood, Proc. Biol. Soc. Wash., Vol. 



XXV, p. 62. 

 June, 1912. Gynaikothrips ficorum Karny, Fauna exotica, II Jahrg., No. 5, p. 19. 

 July, 1912. Phlceothrips ficorum Houard, Ann. Soc. Ent. France, Vol. 



LXXXI, p. 56, figs. 103-108. 

 Oct., 1912. [Mesothrips or Smerinthothrips] bakeri Karny, Trans. Ent. Soc. 



Lond., 1912, p. 472. 

 Dec. 9, 1912. Gynaikothrips ficorum Karny, Marcellia, Vol. XI, p. 129. 

 Dec. 9, 1912. Gynaikothrips uzeli idem, ibidem. 

 Dec. 14, 1912. Mesothrips ficorum Russell, Bull. 99, Pt. II, Bur. Ent., U. S. 



Dept. Agr., p. 17 (footnote). 

 1913. Gynaikothrips uzeli Karny, Bull. Jard. Bot. Buitenzorg, Deux. Ser., 



No. 10, p. 103; figs. 73, 74? 

 1913. Gynaikothrips uzeli van Leeuwen-Reijnvaan, ibidem, pp. 7-10, figs. 2, 3. 



Type locality : Buitenzorg, Java. 



Distribution : Java, Algeria, Canary Islands, Cuba, Porto Rico, Florida. 



Food plants : Various species of Ficus, especially F. retusa and F. 

 bsnjamina ; tobacco ? 



Dr. Hooker's collection contains a large number of specimens of this 

 insect, labeled as having been taken at Mayagiiez, Porto Rico, May 2 3, 

 1912, on tobacco. If this food-plant record is correct, and the habit a 

 usual one, the species deserves to be watched very carefully by the eco- 

 nomic entomologist. 



The synonjTny given above is the result of a comparison of specimens 

 from Java, Algeria, Canary Islands, Cuba, Porto Rico, and Florida, re- 

 ceived through the kindnesses of Dr. Louis Trabut, Dr. Heinrich Karny, 

 Dr. W. A. Hooker, Mr. E. A. Schwarz, and Mr. D. L. Crawford. 



The specimens from Dr. Trabut are from the same locality as those 

 sent by him in 1 908 to Dr. Marchal and which were described as 

 Phlozothrips ficorum. The specimens from Dr. Karny were almost cer- 

 tain compared with some of Zimmermann's types. Those from Mr. 

 Crawford consisted of five cotypes of his Liothrips bakeri. 



Working with this well-authenticated material, I have found it abso- 



