PROC. ENTOMOL. SOC. WASH. 79(4), 1977, pp. 499-517 A TAXONOMIC STUDY OF HEMIGYMNASPIS (LINDINGER) (HOMOPTERA: DIASPIDIDAE) INCLUDING DESCRIPTIONS OF FOUR NEW SPECIES^ John A. Davidson and Douglass R. Miller Abstract. — A generic diagnosis of Hemigymnaspis is given and four new species are described and illustrated; they are Hemigymnaspis hrayi from Dominica, H. jessopae from southern Florida, H. orchidicola from Venezuela, and H. pimentae from the Dominican Republic. A key is given for the five species. In 1972, Davidson redescribed Hemigymnaspis and gave a detailed treatment of the only included species H. eugeniae (Lindinger). Since that time, four additional species have been discovered and are here described. Methods and Depositories Temiinologies used in the descriptions of the adult male and first instar are that of Ghauri (1962) and Stoetzel and Davidson (1974) respectively. Terminology regarding sclerotized areas on the pygidium of the adult fe-male is that of Davidson (1970). In the descriptions, total numbers of stiiictures are given for half of the body as they appear on the illustrations unless indicated otherwise. For example, on H. eugeniae there is an average of 60 pygidial macroducts on each specimen; in the description we state that there are about 30. Nu-merical values are based on 10 specimens and are given as a range followed by an average (rounded off to the nearest whole number) in parentheses. Depositories and their abbreviations are as follows: British Museum (Natural History), London (BM); California State Department of Agri-culture, Sacramento (CD A); Florida State Collection of Arthropods, Gaines-ville (FSCA); Museo de Historia Natural de la Ciudad de Mexico, Mexico City (MNC); Museum National d'Histoire Naturelle, Paris (MNH); South African National Collection of Insects, Pretoria (SA); University of Cali-fornia, Davis (UCD); University of Delaware, Newark (UD); Uni\ersity of Hawaii at Manoa, Honolulu (UH); United States National Museum of Natural History, Washington, D.C. (USNM); Virginia Polytechnic Insti-tute and State University, Blacksburg (\TI); Zoological Academy of Science of USSR, Leningrad (ZAS). Genus Hemigymnaspis Lindinger, 1934 Hemigi/mnaspis Lindinger, 1934:45 (as a subgenus of Melana.spis Cock-erell).
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