Abstract
The third instar larva and puparium of Gastrops willistoni Cresson (Diptera: Ephydridae), preying on eggs in a foam nest of Leptodactylus knudseni Heyer (Anura: Leptodactylidae), in a central Amazonian dryland forest (Brazil) are described for the first time. The fusiform larva has a short breathing tube, its anterior spiracles are fan-shaped and posterior spiracles with three spircular openings. Pupa is ovoid with a broad anterior margin and bifurcate posterior tip. The taxonomic relationship of the frog egg predators, Gastrops Williston and Typopsilopa Cresson, are discussed.
References
Becker, T. (1926) 56a Ephydridae und 56b Canaceidae. In: Lindner, E. (Ed.), Die Fliegen der Palaearktischen Region. Band VI. Part 1. E. Schweizerbart’sche Verlag, Stuttgard, pp. 1–115.
Bohart, G.E. & Gressitt, J.L. (1951) Filth-inhabiting flies of Guam. Bernice P. Bishop Museum Bulletin 204. Bernice P. Bishop Museum, Honolulu, 152 pp.
Bokermann, W.C.A. (1957) Frog eggs parasitized by dipterous larvae. Herpetologica, 13(3), 231–232.
Carvalho, T.R. de, Facure, K.G. & Giaretta, A.A. (2012) Predation upon eggs of the terrestrial foam-nesting frog Leptodactylus fuscus (Leptodactylidae) by larvae of the ground beetle Loxandrus oophagus (Carabidae: Loxandrini). Herpetology Notes, 5, 319–322.
Cresson, E.T. (1949) A systematic annotated arrangement of the genera and species of the North American Ephydridae (Diptera). IV. The subfamily Napaeinae. Transactions of the American Entomological Society, 74, 225–260.
Downie, J.R. (1988) Functions of the foam in the foam-nesting leptodactylid Physalaemus pustulosus. Herpetological Journal, London, 1, 302–307.
Downie, J.R. (1990) Functions of the foam in foam-nesting leptodactylids: anti-predator effects of Physalaemus pustulosus foam. Herpetological Journal, London, 1, 501–503.
Eastin, W.C. & Foote, B.A. (1971) Biology and immature stages of Dichaeta caudata (Diptera: Ephydridae). Annals of the Entomological Society of America, 64 (1), 271–279.
https://doi.org/10.1093/aesa/64.1.271
Foote, B.A. (1984) Biology of Trimerina madizans, a predator of spider eggs (Diptera: Ephydridae). Proceeding of the Entomological Society of Washington, 86 (3), 486–492.
Frost, D.R. (2020) Amphibian Species of the World: an Online Reference. Version 6.1. Electronic Database. American Museum of Natural History, New York. Available from: https://amphibiansoftheworld.amnh.org/index.php (accessed 25 June 2020)
https://doi.org/10.5531/db.vz.0001
Gascon, C. (1991) Breeding of Leptodactylus knudseni: responses to rainfall variation. Copeia, 1991 (1), 248–252.
https://doi.org/10.2307/1446275
Haddad, C.F.B. & Prado, C.P.A. (2005) Reproductive modes in frogs and their unexpected diversity in the Atlantic Forest of Brazil. BioScience, 55 (3), 207–217.
https://doi.org/10.1641/0006-3568(2005)055[0207:RMIFAT]2.0.CO;2
Hennig, W. (1943) Übersicht über die bisher bekannten Metamorphosestadien der Ephydriden, mit Neubeschreibungen nach dem Material der Deutschen Limmnologishen Sundaexpedition. (Diptera: Ephydridae). Arbeiten über morphologische und taxonomische Entomologie aus Berlin-Dahlem, 10 (2–3), 105–138.
Keiper, J.B., Jiannino, J., Sanford, M. & Walton, W.E. (2001) Biology and immature stages of Typopsilopa nigra (Williston) (Diptera: Ephydridae), a secondary consumer of damaged stems of wetland monocots. Proceedings of the Entomological Society of Washington, 103 (1), 89–97.
Kirk-Spriggs, A.H. (1986) The puparium of Placopsidella cynocephala Kertész (Diptera: Ephydridae) and notes on its biology. Mitteilungen der schweizerischen Entomologischen Gesellschaft, 59, 481–485.
Krivosheina, M.G. & Ozerov, A.L. (1989) Ekologia i morfologia lichinok Athyroglossa glabra Meigen (Diptera, Ephydridae) - obitatelej trupov pozvonochnych zhivotnych [Ecology and morphology of the larvae of Athyroglossa glabra Meigen (Diptera, Ephydridae) - living in corpses of vertebrate animals]. Biologicheskie Nauki [Biological Sciences], 5 (305), 47–50.
Lacey, L.A. (1979) Predação em girinos por uma vespa e outras associações de insetos com ninhos de duas espécies de rãs da Amazônia. Acta Amazonica, 9 (4), 755–762.
https://doi.org/10.1590/1809-43921979094755
Lima, A.P., Magnusson, W.E., Menin, M., Erdtmann, L.K., Rodrigues, D.J., Keller, C. & Hödl, W. (2012) Guia de Sapos da Reserva Adolpho Ducke, Amazônia Central. 2nd Edition. Editora INPA, Manaus, 187 pp.
Lingnau, R. & Di-Bernardo, M. (2006) Predation on foam nests of two leptodactylid frogs by Solenopsis sp. (Hymenoptera, Formicidae) and Liophis miliaris (Serpentes, Colubridae). Biociências, 14 (2), 223–224.
Lizarralde de Grosso, M. (1998) Revisión del género Beckeriella Williston (Diptera, Ephydridae). Acta Zoológica Lilloana, 44 (1), 41–56.
Mathis, W.N. (2010) Ephydridae. In: Brown, B.V., Borkent, A., Cumming, J.M., Wood, D.M., Woodley, N.E. & Zumbado, M.A. (Eds.), Manual of Central American Diptera – Vol. 2. NRC Research Press, Ottawa, pp. 1211–1233.
Menin, M. & Giaretta, A.A. (2003) Predation on foam nests of leptodactyline frogs (Anura: Leptodactylidae) by larvae of Beckeriella niger (Diptera: Ephydridae). Journal of Zoology, London, 261 (3), 239–243.
https://doi.org/10.1017/S0952836903004138
Pinto, R.M. & Menin, M. (2017) Aspects of the natural history of Leptodactylus knudseni Heyer, 1972 (Anura: Leptodactylidae) in a pristine forest in Central Amazonia, Brazil, with comments on ontogenetic variation of its tadpoles. Journal of Natural History, 51 (41–42), 2523–2534.
https://doi.org/10.1080/00222933.2017.1371348
Pombal, J.P. & Haddad, C.F.B. (2005) Estratégias e modos reprodutivos de anuros (Amphibia) em uma poça permanente na Serra de Paranapiacaba, Sudeste do Brasil. Papéis Avulsos de Zoologia, Museu de Zoologia da Universidade de São Paulo, 45 (15), 201–213.
https://doi.org/10.1590/S0031-10492005001500001
Prado, C.P.A., Toledo, L.F., Zina, J. & Haddad, C.F.B. (2005) Trophic eggs in the foam nests of Leptodactylus labyrinthicus (Anura, Leptodactylidae): an experimental approach. Herpetological Journal, London, 15 (4), 279–284.
Ryan, M.J. (1985) The túngara frog: A study in sexual selection and communication. The University of Chicago Press, Chicago, Illinois, 230 pp.
Sá, R.O. de, Grant, T., Camargo, A., Heyer, W.R., Ponssa, M.L. & Stanley, E. (2014) Systematics of the Neotropical Genus Leptodactylus Fitzinger, 1826 (Anura: Leptodactylidae): Phylogeny, the Relevance of Non-molecular Evidence, and Species Accounts. South American Journal of Herpetology, 9 (Special Issue 1), 1–128.
https://doi.org/10.2994/SAJH-D-13-00022.1
Shorthouse, D. P. (2010) SimpleMappr, an online tool to produce publication-quality point maps. Available from: https://www.simplemappr.net. (accessed 17 July 2020)
Silva, W.R. & Giaretta, A.A. (2009) On the natural history of Leptodactylus syphax with comments on the evolution of reproductive features in the L. pentadactylus species group (Anura, Leptodactylidae). Journal of Natural History, 43 (3), 191–203.
https://doi.org/10.1080/00222930802484618
Silva, W.R., Giaretta, A.A. & Facure, K.G. (2005) On the natural history of the South American pepper frog, Leptodactylus labyrinthicus (Spix, 1824) (Anura, Leptodactylidae). Journal of Natural History, 39 (7), 555–566.
https://doi.org/10.1080/00222930410001671273
Simpson, K.W. (1975) Biology and Immature stages of three species of Nearctic Ochthera (Diptera: Ephydridae). Proceedings of the Entomological Society of Washington, 77, 129–155.
Tenorio, J.A. (1980) Family Ephydridae. In: Hardy, D.E. & Delfinado, M.D. (Eds.), Insects of Hawaii. Vol. 13. Diptera: Cyclorrhapha III. Series Schizophora section Acalypterae, exclusive of family Drosophilidae, The University Press of Hawaii, Honolulu, pp. 251–351.
Teskey, H.J. (1981) Morphology and terminology—Larvae. In: McAlpine, J.F., Peterson, B.V., Shewell, G.E., Teskey, H.J., Vockeroth, J.R. & Wood, D.M. (Eds.), Manual of Nearctic Diptera. Vol. 1. Research Branch Agriculture Canada Monograph No. 27. Biosystematic Research Institute, Ottawa, Ontario, pp. 65–88.
Villa, J. (1980) “Frogflies” from Central and South America with notes on other organisms of the amphibian egg microhabitat. Brenesia, 17, 49–68.
Villa, J., McDiarmid, R.W. & Gallardo, J.M. (1982) Arthropod predators of leptodactylid frog foam nests. Brenesia, 19/20, 578–589.
Vonesh, J.R. (2000) Dipteran predation on the arboreal eggs of four Hyperolius frog species in western Uganda. Copeia, 2000 (2), 560–566.
https://doi.org/10.1643/0045-8511(2000)000[0560:DPOTAE]2.0.CO;2
Vonesh, J.R. & Bolker, B.M. (2005) Compensatory larval responses shift trade-offs associated with predator-induced hatching plasticity. Ecology, 86 (6), 1580–1591, Appendix A. [Estimating the effect of egg-predation on larval densities with photographs of the field site, Hyperolius spinigularis and egg-stage predators. Ecological Archives E086-086-A1, 6 pp.]
https://doi.org/10.1890/04-0535
Williams, F.X. (1936) Two water beetles that lay their eggs in the frothy egg masses of a frog or tree toad. The Pan-Pacific Entomologist, 12 (1), 6–7.
Wirth, W.W. (1958) A review of the genus Gastrops Williston, with descriptions of two new species (Diptera, Ephydridae). Proceedings of the Entomological Society of Washington, 60 (6), 247–250.
Zatwarnicki, T. (1992) A new classification of Ephydridae based on phylogenetic reconstruction (Diptera Cyclorrhapha). Genus, 3 (2), 65–119.
Zatwarnicki, T. & Hagenlund, L.K. (2017) Systematic position of Gastropini (Diptera: Ephydridae), and a review of two included genera: Gastrops Williston and Notacanthina Macquart. Annales Zoologici, 67 (4), 837–858.
https://doi.org/10.3161/00034541ANZ2017.67.4.017