A Revision of the New World Species of the Shore-Fly Genus Nostima Coquillett (Diptera: Ephydridae)
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A Revision of the New World Species of the Shore-Fly Genus Nostima Coquillett (Diptera: Ephydridae) JAMES F. EDMISTON and WAYNE N. MATHIS W9\ I SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • NUMBER 623 SERIES PUBLICATIONS OF THE SMITHSONIAN INSTITUTION Emphasis upon publication as a means of "diffusing knowledge" was expressed by the first Secretary of the Smithsonian. In his formal plan for the Institution, Joseph Henry outlined a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge." This theme of basic research has been adhered to through the years by thousands of titles issued in series publications under the Smithsonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Contributions to Anthropology Smithsonian Contributions to Botany Smithsonian Contributions to the Earth Sciences Smithsonian Contributions to the Marine Sciences Smithsonian Contributions to Paleobiology Smithsonian Contributions to Zoology Smithsonian Folklife Studies Smithsonian Studies in Air and Space Smithsonian Studies in History and Technology In these series, the Institution publishes small papers and full-scale monographs that report the research and collections of its various museums and bureaux or of professional colleagues in the world of science and scholarship. The publications are distributed by mailing lists to libraries, universities, and similar institutions throughout the world. Papers or monographs submitted for series publication are received by the Smithsonian Institution Press, subject to its own review for format and style, only through departments of the various Smithsonian museums or bureaux, where the manuscripts are given substantive review. Press requirements for manuscript and art preparation are outlined on the inside back cover. Lawrence M. Small Secretary Smithsonian Institution SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • NUMBER 623 A Revision of the New World Species of the Shore-Fly Genus Nostima Coquillett (Diptera: Ephydridae) James F Edmiston and Wayne N. Mathis JUL I 3 2005 Smithsonian Contributions and Studies Series Smithsonian Institution Washington, D.C. 2005 ABSTRACT James F. Edmiston and Wayne N. Mathis. A Revision of the New World Species of the Shore-Fly Genus Nostima Coquillett (Diptera: Ephydridae). Smithsonian Contributions to Zoology, number 623, 108 pages, 255 figures, 3 tables, 2005. Thirty-eight New World species are revised, including 21 new species that are described (type locality in parentheses): Nostima atriscuta (Jamaica. Portland: Crystal Springs (18°12.5'N, 76°37.9'W)), N. cinnamea (Grand Bahamas Island. Freeport), N. duaguttata (Costa Rica. Puntarenas: Rincon (5 km S; 8°42.1'N, 83°30.8'W; 95 m)), N. footei (Panama. Canal Zone: Balboa), N. franciscana (Jamaica. St. Anns: Runaway Bay), N. lineata (Dominica: Layou (5 km E)), N. lucida (Bolivia. La Paz: Apa (8 km S Chulumani; 16°22'S, 67°30.4'W; 1960 m)), N. lutea (St. Vincent: Kingstown Botani- cal Garden), N. maculata (Argentina. Tucuman: La Cavera), N. magnifica (Ecuador. Chimbo- razo: Naranjapata Chilicay), N. melina (Panama. Canal Zone: Kobbe Beach), N. negruzca (Grenada. St. John: Concord Falls (12°07.1'N, 61°43'W)), N. simuliflavida (Dominica. Cabrit Swamp), N. spinosa (Bermuda. Paget Parish: Botanical Gardens), N. stellata (Ecuador. Orel- lana: Rio Tiputini (0°38.2'S, 76°8.9'W)), N. tresguttata (Ecuador. Napo: Baeza (17 km S; 1815 m)), N. velutina (Mexico. Chiapas: San Cristobal de Las Casas (2160 m)), N. williamsi (Costa Rica. Alajuela: San Mateo, Higuito), N. xenohypopia (Dominican Republic. Pedernales: Sierra de Baoruco, Las Abejas (1300 m)), N. xenoptera (Costa Rica. Puntarenas: Rinc6n (3 km SW, 9°55'N, 84°13'W, 10 m)), N. ypsilona (Costa Rica. Puntarenas: Rincon (3 km SW, 9°55'N, 84°13'W, 10 m)). This study revealed the species-group Nostima niveofasciata Cresson (1947) is synonymous with Nostima canens Cresson (1941). The cladistic analysis was based upon 10 morphological characters. An analysis using "implicit enumeration" (ie-) of Hennig86 resulted in a cladogram of minimal length. This cla- dogram has a length of 16 steps, a consistency index of 1.0, and a retention index of 1.0. From the cladogram (Figure 255) and supporting synapomorphies, the following hypotheses can be made: (1) Nostima is monophyletic; (2) Nostima and Garifuna form a monophyletic lineage (supported by three synapomorphies); (3) Garifuna is the immediate sister group of Nostima, and Philygria forms a clade immediately basal to the common lineage of Nostima and Gari- funa; and (4) New World species of Nostima are provisionally arrayed into five lineages. Some of these lineages apparently demonstrate a speciation pattern in which peripheral or isolated species diverged from more widely distributed species. Keys to the tribes and genera of Ilytheinae, as well as to the New World species of Nos- tima, are provided. Distribution maps are also produced for the New World species. OFFICIAL PUBLICATION DATE is handstamped in a limited number of initial copies and is recorded in the Institution's annual report, Annals of the Smithsonian Institution. SERIES COVER DESIGN: The coral Montastrea cavernosa (Linnaeus). Library of Congress Cataloging-in-Publication Data Edmiston, James F. A revision of the New World species of the shore-fly genus Nostima Coquillett (Diptera: Ephydridae) / James F. Edmiston and Wayne N. Mathis. p. cm.—(Smithsonian contributions to zoology ; no. 623) Includes bibliographical references (p.). 1. Nostima Classification. I. Mathis, Wayne N. II. Title. III. Series. QL537.E7E36 2005 595.77'4—dc22 2004062639 © The paper used in this publication meets the minimum requirements of the American National Standard for Permanence of Paper for Printed Library Materials Z39.48—1984. Contents Page Introduction 1 Methods and Material 2 Acknowledgments 2 Systematics 3 Subfamily Ilytheinae Cresson 3 Key to Tribes and Genera of Ilytheinae Cresson 4 Tribe Hyadinini Phillips et al 5 Genus Nostima Coquillett 6 Key to New World Species of Nostima 8 1. Nostima abbreviata Cresson 11 2. Nostima approximata Sturtevant and Wheeler 13 3. Nostima atriscuta, new species 15 4. Nostima canens Cresson 17 5. Nostima cinnamea, new species 19 6. Nostima duaguttata, new species 21 7. Nostima elegantula Hendel 23 8. Nostima flavida Cresson 25 9. Nostima footei, new species 27 10. Nostima franciscana, new species 29 11. Nostima gilvipes (Coquillett) 31 12. Nostima giovannolii Wirth 34 13. Nostima ilytheoides Cresson 36 14. Nostima lineata, new species 38 15. Nostima lucida, new species 40 16. Nostima lutea, new species 41 17. Nostima maculata, new species 43 18. Nostima magnifica, new species 45 19. Nostima melina, new species 47 20. Nostima negruzca, new species 49 21. Nostima nitidigaster Cresson 51 22. Nostima niveivenosa Cresson 52 23. Nostimapicta (Fallen) 55 24. Nostima pulchra (Williston) 60 25. Nostima quinquenotata Cresson 63 26. Nostima schildi Cresson 65 27. Nostima simuliflavida, new species 67 28. Nostima slossonae Coquillett 69 29. Nostima spilogaster Cresson 72 30. Nostima spinosa, new species 74 31. Nostima stellata, new species 76 32. Nostima tresguttata, new species 78 33. Nostima velutina, new species 79 34. Nostima williamsi, new species 81 35. Nostima willistoni Wirth 83 36. Nostima xenohypopia, new species 84 37. Nostima xenoptera, new species 86 38. Nostima ypsilona, new species 87 in IV SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY Phylogenetic Considerations 88 Characters Used for Phylogenetic Analysis 89 Generic-Level Phylogeny 90 Nostima Phylogeny 90 Zoogeographic Considerations 90 Concluding Remarks 91 Figures 139—255 95 Literature Cited 107 FIGURE 1.—Frontispiece of Noslimafranciscana Edmiston and Mathis (West Indies, d). Scale = 0.5 mm. A Revision of the New World Species of the Shore-Fly Genus Nostima Coquillett (Diptera: Ephydridae) James F Edmiston and Wayne N. Mathis Introduction ing priority (Cresson 1941, 1943). Cresson (1941, 1944, 1947) and Sturtevant and Wheeler (1954) significantly revised the Shore flies of the genus Nostima Coquillett have semiaquatic classification and described additional species. larval stages that feed on blue-green algae (Foote, 1995), and Except for polar regions, Nostima is essentially distributed adults are often collected in grassy habitats (Bahrmann, 1978; worldwide and is especially rich in tropical regions. More spe- Steinly, 1984). The natural history, ecology, and immature cies of the genus are known from the New World than from stages of only one species have been described (Foote, 1983). elsewhere (Mathis and Zatwarnicki, 1995). Cogan (1980, Species of Nostima are very small, obscure, and seldom col- 1984) cataloged three species from the Afrotropical Region lected. The purpose of this paper is to revise the New World and three species from the Palearctic Region. Canzoneri species, including an analysis of their phylogenetic relation- (1986), Canzoneri and Raffone (1987), and Canzoneri and ships. Rampini (1995) each described a new Afrotropical species. Nostima is derived from the Greek nostimos, meaning desir- Miyagi (1977) reported two species from Japan, and three spe- able. The generic name confirms Dahl's (1959:143) reference cies are known from the South Pacific and New Zealand (Mal- to Nostima as "our most beautiful ephydrid." Indeed, most spe- loch, 1933; Cresson, 1943; Mathis,