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1969 ] Dumal of the Lepidopterists' Society 101 4) Traps of this type should prove to be quite useful in mark-release and recapture experiments and quantitative population studies o.f certain species of Lepidoptera. In conclusion, these traps provide an efficient means of collecting all species of Lepidoptera known to be attracted to baits. Samples taken with traps are highly selective, being biased in .favor of certain nymphalids (i.e. the Angle Wings) and the satyrs. However, by altering the type of bait, the distance of the opening between the platform and the lower rim of the trap, and by placing these traps in other than woodland habitats, additional species can probably be collected with them. ACKNOWLEDGMENTS The author is grateful to Dr. L. P. Brower of Amherst College and to Dr. C. W. Kidder III of Wesleyan University for their helpful suggestions in designing these traps. I sincerely appreciate the help of my summer assistant, J. C. Lincoln, and my wi.fe, P. C. Platt, both in constructing the traps, and .for tending them in the field. I wish also to express my thanks to Mr. J. Muller of Lebanon, N.]., who introduced me to collecting Lepidoptera with bait traps. This study was supported in part by a summer grant-in-aid from Wesleyan University. LITERATURE CITED BROWER, L. P., 1963. The evolution of sex-limited mimicry. Mimicry Symposium, Proc. Internat'1. Congr. Zool., 16(4); 173-179. RYDON, A., 1964. Notes of the use of butterfly traps in East Africa. J. Lepid. Soc., 18(1); 51-58. BOOK REVIEW UNTERSUCHUNGEN UBER DIE SYSTEMATIK DER TRffiUS THYATlRINI, lVIACROTHYATJRINI, HABROSYNINI UND TETHEINI (LEPIDOPTERA; THYATIRIDAE), by Karl Werny. 463 pp., 436 figs. and maps. 1966. Inaugural-Dissertation, Universibit des Saarlandes, Saar­ brucken, Germany. An important worldwide revision of parts of the moth family Thyatiridae has re­ mained little noticed, on this continent. The work encompasses the 102 species of the tribes Thyatirini, Macrothyatirini, Habrosynini and Tetheini. The revision was published as the author's Ph.D. thesis by the faculty of Mathematics and Natural Sciences of the University of Saarbrucken, under the auspices of the late Professor Dr. G. de Lattin who expressed the hope that the research on the remaining tribes of the subfamily Thyatirinae (28 species) and the small subfamily Polyplocinae (50 species) would follow soon. In the North American fauna we do not have many species of the family Thya- 102 RIOTTE: Book review Vol. 23, no. 2 tiridae. However, the status of some of these was unelarified. Therefore, we are duly thankful to the author for having presented us with an answer to our old questions. The revisionary work itself is thorough and anyone who has done something along this line will appreciate the enormous work the author did. Not only have every species and subspecies, genus and tribe been profusely discussed, but also the male and female genitalia and some venation drawings are shown, as well as black and white photographs of the moths. Maps show the worldwide distribution of almost all genera involved. An impressive bibliography and indices to tribes, genera and species with subspecies and forms complete the very satisfactory and industrious work. For us on this continent, what the author has to say about our well known species of the following genera is of special interest. Euthyatira Smith, 1891: pudens (Guenee, 1852); W erny shows with the help of the malc and female genitalia that there is a specific difference between pudens and what was up to now thought to be only an individual form of it, pennsylvanica. The valvae are different enough to warrant alone the decision of the author. There fol­ lows the interesting nomenclatorial fact that pennsylvanica will have as author Werny, as Smith had previously described it only as a "varicty" of pudens. E. larata (Grote, 1881) and semicil'culal'is (Grote, 1881); Werny says that they are distributed all over the nOlthern United States, and adds, in the case of the latter, southern Canada. This, however, is erroneous. Both species are clearly, at least as is known from specimens in our American collections, only western, as is also convincingly shown by the locali­ ties of the specimens used by the author, who succumbed to a common error of European authors dealing with North American species, not having a vivid enough idea about the influence of the Rockies on distributional facts. Habrosyne Hubner, 1816: Only two of the many species of this genus are familiar with us; scripta (Gosse, 1840) and glariosa Guenee, 1852, the latter being quite rare but probably more widely distributed than supposed previously. As subspecies to scripta are chatfeldti Grote, 1895, and abrasoides Barnes & Benjamin, 1929, to gZariosa, arizonensis Barnes & McDunnough, 1912. In dealing with abrasoides and arizonensis author did not understand the meaning of Barnes & Benjamin in their description of abrasoides, that it is "a parallel to gloriosa (rectangulata) race arizonensis B. & McD." Of course, the subspecies as such are not parallel. What the author misinterprets as "identical," refers to the development of similar characters in two nearly related species, i.e. parallel development under the same local conditions. Pseudothyatira Grote, 1865: Here, too, we are shown that what we considered to be individual forms of one specics, arc in reality two species: cymatophoroides (Guenee, 1852) and expultrix (Grote, 1863). The male and the female genitalia show constant differences in 178 specimens investigated by the author. The reviewer checked the genitalia of a series of both species in our collection from different North American localities and found that W erny's findings were confimled. Both species fly at the same time of the year and in many localities they both occur, cymatophoroides being the more uncommon. Werny says that there is no knowledge about the im­ mature stages of both species. Research in this direction should prove to be rewarding. Following the old (and perhaps a little outmoded) way Werny had first made slidcs of the genitalia and then the drawings. The result is artificially distorted geni­ talia, and the aedoeagi are not all shown in the same position, which makes com­ parison difficult. Drawings can be made from the genitalia while these are put in alcohol and glycerin (80% alcohol and glycerin at equal parts) in small glass dishes. They may then be kept indefinitely in vials with the same mixture or, if absolutely not avoidable, slides can be made then. This would be very recommendable for the future work. Notwithstanding the above few little remarks, we have all reason to congratulate thc author on his tremendous work and we can only hope that he will bring it to a good finale, soon.-J. C. E. RlOTTE, Research Associate, Department of Entomology, Raljal Ontario Museum, Toronto, Ontario, Canada. .

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