A List of Thysanoptera Known to Occur in Indiana

Abstract

Although about 75 species of Thysanoptera are known from the four bordering states, including at least 70 recorded from Illinois alone, only 15 species have been previously reported from Indiana. Russel in 1912 recorded Aeolothrips bicolor Hines as occurring in Indiana. Watson in 1923 cited only three species-Frankliniella tenuicornis (Uzel), Limothrips cerealium Halliday, and Neoheegeria verbasci (Osborn)actually known from Indiana, although a fourth, Haplothrips leucanthemi (Schrank), was listed as present in all the states, and a fifth, Heliothrips haemorrhoidalis (Bauche), as common in greenhouses in the northern states. Hood added Sericothrips apicalis Hood to the list in 1927, and Davis reported Taeniothrips simplex Morison for Indiana in 1932. Bailey in his list of injurious thrips of the United States, published in 1940, listed seven additional species for Indiana, but did not give the original records. During 1942 and 1943 the author collected and studied thrips during the preparation of an undergraduate thesis.t The following list condensed from the thesis is based upon records, in literature, specimens collected by the author in 1942 and 1943, and other specimens from Indiana in the Entomological Collections of Purdue University. The list includes 34 species of which 18 are recorded from the state for the first time. Many species that certainly occur in Indiana as indicated by records of their distribution in neighboring states have not been collected within the state to the knowledge of the author and are not recorded here. In the following records initials are used to designate the collector as follows: JJD-J. J. Davis, GEG-G. E. Gould, CCA-C. C. Alexander, GCG. Cummins, JMA-J. M. Amos, and CCB-C. C. Blickenstaff. Appreciation is extended to Dr. H. 0. Deay, Dr. B. E. Montgomery, and Prof. J. J. Davis of Purdue University for their guidance in this study. Most of the determinations were checked by J. C. Crawford of the U. S. National Museum; many of the specimens collected by J. J. Davis had been checked by J. D. Hood. Species marked with an asterisk are those recorded from Indiana for the first time.