Abstract
Reikosiella Yoshimoto, 1969 is synonymized under Merostenus Walker, 1837 n. syn. and treated as M. (Reikosiella), one of four subgenera recognized in the genus. Hirticauda Bouček, 1988, previously treated as a subgenus of Reikosiella, is synonymized under M. (Merostenus) n. syn., and two subgenera established in Reikosiella by Gibson (1995) are synonymized under Merostenus and treated as the subgenera M. (Capreocauda) and M. (Incohata) n. syns. The new generic synonymy is proposed after morphological comparison of females and males of Merostenus and Reikosiella sensu Gibson (1995), including reanalysis of features possessed by a basal group of genera of Eupelminae whose females share two hypothesized symplesiomorphies—a medially divided mesotrochantinal plate and lack of a mesotibial apical groove. A checklist of the 51 world species assigned to Merostenus is given, with 1 described species in M. (Incohata), 6 in M. (Capreocauda), 6 in M. (Reikosiella) and 38 in M. (Merostenus). All but one, the type species of Merostenus, represent new combinations. The species of Merostenus with brachypterous females are revised, with 8 of 10 species described as new. In addition to M. (Merostenus) excavatus (Dalman) (♀, ♂) from the Palaearctic, described in the same subgenus are one new species from Mexico, M. (Merostenus) mexicanus n. sp. (♀), and seven from the Afrotropical region, M. (Merostenus) distigma n. sp. (♀: Kenya, Tanzania), M. (Merostenus) micropterus n. sp. (♀: Democratic Republic of the Congo), M. (Merostenus) platyscapus n. sp. (♀: South Africa), M. (Merostenus) reticulatus n. sp. (♀, ♂: Kenya), M. (Merostenus) speculum n. sp. (♀: Burundi), M. (Merostenus) congoensis (♀: Democratic Republic of the Congo), and M. (Merostenus) longistylus n. sp. (♀, ♂: South Africa). The first seven species are assigned to the excavatus species-group of M. (Merostenus) based on females sharing a completely sclerotized pronotum and apically truncate syntergum. Also treated is M. (Reikosiella) melinus (Yoshimoto) n. comb. (♀: Argentina, Brazil, Hawaii), the only species known with macropterous to variably strongly brachypterous females. Six species are transferred to other genera. Merostenus ferrugineus Yoshimoto & Ishii is transferred to Anastatus Motschulsky as A. ferrugineus (Yoshimoto & Ishii) n. comb., Merostenus guamensis Yoshimoto & Ishii and Merostenus palauensis Yoshimoto & Ishii are transferred to Eupelmus Dalman and provisionally classified in E. (Eupelmus) as E. (Eupelmus) guamensis (Yoshimoto & Ishii) n. comb. and E. (Eupelmus) palauensis (Yoshimoto & Ishii) n. comb., Eupelminus subapterus Ashmead is transferred to E. (Eupelmus) as E. (Eupelmus) subapterus (Ashmead) n. comb., and Eupelminus robustus Brues and Eupelminus tarsatus Waterston are transferred to Arachnophaga (Parasolindenia Brues) as Arachnophaga (Parasolindenia) robusta (Brues) n. comb. and Arachnophaga (Parasolindenia) tarsata (Waterston) n. comb. The character-state analysis and treated species are illustrated through macrophotography and, except for A. robusta, notes and illustrations provided for the excluded species to assist their future recognition.
References
Anil, K. & Narendran, T.C. (1991) A new species of Hirticauda Bouček (Hymenoptera: Eupelmidae) from India. Hexapoda, 3, 21–23.
Ashmead, W.H. (1900) Report upon the aculeate Hymenoptera of the islands of St. Vincent and Grenada, with additions to the parasitic Hymenoptera and a list of the described Hymenoptera of the West Indies. Transactions of the Entomological Society of London, 48, 207–367.
https://doi.org/10.1111/j.1365-2311.1900.tb02379.x
Ashmead, W.H. (1901) Hymenoptera Parasitica. Fauna Hawaiiensis, 1 (3), 277–364.
Askew, R.R. (1987) Anastatus ruficaudus Ferrière (Hym., Chalcidoidea), a eupelmid new to Britain. Entomologist's Monthly Magazine, 123, 49–50.
Askew, R.R. & Nieves-Aldrey, J.L. (2000) The genus Eupelmus Dalman, 1820 (Hymenoptera, Chalcidoidea, Eupelmidae) in peninsular Spain and the Canary Islands, with taxonomic notes and descriptions of new species. Graellsia, 56, 49–61. https://doi.org/10.3989/graellsia.2000.v56.i0.309
Bouček, Z. (1977) A faunistic review of the Yugoslavian Chalcidoidea (Parasitic Hymenoptera). Acta Entomologica Jugoslavica, 13 (Supplement), 1–145.
Bouček, Z. (1988) Australasian Chalcidoidea (Hymenoptera). A Biosystematic Revision of Genera of Fourteen Families, with a Reclassification of Species. C.A.B. International, Wallingford, 832 pp.
Brues, C.T. (1907) New chalcid-flies from Cape Colony. Bulletin of the Wisconsin Natural History Society, 5, 46–53.
Burks, B.D. (1979) Family Eupelmidae. In: Krombein, K.V., Hurd, P.D., Smith, D.R. & Burks, B.D. (Eds.), Catalog of Hymenoptera in America North of Mexico. Vol. I. Smithsonian Institute Press, Washington, pp. 878–889.
Chamberlin, T.R. (1924a) Introduction of parasites of the alfalfa weevil into the United States. United States Department of Agriculture, Department Circular, 301, 1–9.
Chamberlin, T.R. (1924b) Studies of the parasites of the alfalfa weevil in Europe. Journal of Economic Entomology, 17 (6), 623–632.
https://doi.org/10.1093/jee/17.6.623
Dalla Torre, K.W. von (1897) Zur Nomenclatur der Chalcididen-Genera. Wiener Entomologische Zeitung, 16, 83–88.
Dalla Torre, K.W. von (1898) Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. V. Chalcididae et Proctotrupidae. Engelmann, Lepzig, 598 pp.
Dalman, J.W. (1820) Försök till uppställning af insect-familjen Pteromalini, i synnerhet med afseende på de i Sverige funne arter. Kungliga Svenska Vetenskapsakademiens Handlingar, 41, 340–385.
De Santis, L. (1979) Catálogo de los himenópteros calcidoideos de América al sur de los Estados Unidos. Publicación especial. Comisión de Investigaciónes Científicas de la Provincia de Buenos Aires, La Plata, 488 pp.
Erdős, J. (1959) Species nova Eupelmidarum in territorio reservato Bátorliget detecta. Folia Entomologica Hungarica, Series Nova, 12, 327–330.
Erdős, J. (1960) Magyarország Allatvilága. XII. Kötet. Hymenoptera II. 3. Füzet. Fémfürkészek II. Chalcidoidea II. Torymidae, Eurytomidae, Agaonidae, Cleonymidae, Eupelmidae. Fauna Hungariae, 52, 1–230 + 1–6.
Essig, E.O. & Michelbacher, A.E. (1933) The alfalfa weevil. University of California College of Agriculture, Agricultural Experiment Station, Bulletin 567, 1–99.
Fullaway, D.T. (1947) Notes and exhibitions. Proceedings of the Hawaiian Entomological Society, 13, 10–11.
Fusu, L. (2013) A revision of the Palaearctic species of Reikosiella (Hirticauda) (Hymenoptera, Eupelmidae). Zootaxa, 3636 (1), 1–34.
https://doi.org/10.11646/zootaxa.3636.1.1Fusu, L., Ebrahimi, E., Siebold, C. & Villemant, C. (2015) Revision of the Eupelmidae Walker, 1833 described by Jean Risbec. Part 1: the slide mounted specimens housed at the Muséum national d’Histoire naturelle in Paris. Zoosystema, 37 (3), 457–480. https://doi.org/10.5252/z2015n3a3
Gibson, G.A.P. (1986) Mesothoracic skeletomusculature and mechanics of flight and jumping in Eupelminae (Hymenoptera, Chalcidoidea: Eupelmidae). The Canadian Entomologist, 118, 691–728.
https://doi.org/10.4039/Ent118691-7
Gibson, G.A.P. (1989) Phylogeny and classification of Eupelmidae, with a revision of the world genera of Calosotinae and Metapelmatinae (Hymenoptera: Chalcidoidea). Memoirs of the Entomological Society of Canada, 149, 1–121.
https://doi.org/10.4039/entm121149fv
Gibson, G.A.P. (1995) Parasitic wasps of the subfamily Eupelminae: classification and revision of world genera (Hymenoptera: Chalcidoidea: Eupelmidae). Memoirs on Entomology, International, 5, i–v + 1–421.
Gibson, G.A.P. (2004) Species of Australoodera Girault from the New World, with remarks on world species (Hymenoptera: Chalcidoidea: Eupelmidae). In: Perspectives on biosystematics and biodiversity. Prof. T.C. Narendran commemoration volume. March 2004. Systematic Entomology Research Scholars Association (SERSA), Kerala, pp. 161–175.
Gibson, G.A.P. (2011) The species of Eupelmus (Eupelmus) Dalman and Eupelmus (Episolindelia) Girault (Hymenoptera: Eupelmidae) in North America north of Mexico. Zootaxa, 2951, 1–97.
Gibson, G.A.P., Dewhurst, C. & Makai, S. (2012) Nomenclatural changes in Anastatus Motschulsky and the description of Anastatus eurycanthae Gibson n. sp. (Eupelmidae: Eupelminae), and egg parasitoid of Eurycantha calcarata Lucas (Phasmida: Phasmatidae) from Papua New Guinea. Zootaxa, 3419, 53–61.
Gibson, G.A.P. (2016) Revision of the Neotropical genus Macreupelmus Ashmead (Hymenoptera: Chalcidoidea: Eupelmidae). Zootaxa, 4161 (1), 81–115.
https://doi.org/10.11646/zootaxa.4161.1.3Gibson, G.A.P. & Fusu, L. (2016) Revision of the Palaearctic species of Eupelmus (Eupelmus) Dalman (Hymenoptera: Chalcidoidea: Eupelmidae). Zootaxa, 4081 (1), 1–331.
https://doi.org/10.11646/zootaxa.4081.1
Giles, G.M. (1904) Notes on some collections of mosquitoes, &c., received from the Philippine Islands and Angola. The Journal of Tropical Medicine, 7 (23), 365–369.
Girault, A.A. (1913) Diagnoses of new chalcidoids Hymenoptera from Queensland, Australia. Archiv für Naturgeschichte, 79A, 90–107.
Girault, A.A. (1915) Australian Hymenoptera Chalcidoidea--VII. The family Encyrtidae with descriptions of new genera and species. Memoirs of the Queensland Museum, 4, 1–184.
Girault, A.A. (1916) Descriptions of and observations on some chalcidoid Hymenoptera. Canadian Entomologist, 48, 242–246.
https://doi.org/10.4039/Ent48242-7Girault, A.A. (1917) New chalcid flies from Maryland, II (Hym.). Entomological News, 28, 255–257.
Girault, A.A. (1918) Three new Australian chalcid flies. Redia, 13, 197–198.
Girault, A.A. (1921a) New animals of Australia and old men of the earth. Private publication, Brisbane, 3 pp.
Girault, A.A. (1921b) Miscellaneous species of chalcid-flies from Australia (Hymenoptera, Chalcididae). Insecutor Inscitiae Menstruus, 9, 186–191.
Girault, A.A. (1922) New Eupelminae from Australia (Hymenoptera). Insecutor Inscitiae Menstruus, 10, 108–110.
Girault, A.A. (1923a) Remarkable chalcid-flies collected in northern Australia by A. P. Dodd (Hymenoptera). Insecutor Inscitiae Menstruus, 11, 96–100.
Girault, A.A. (1923b) Microscopitis, womanitis and new Hexapoda. Private publication, Sydney, 7 pp.
Girault, A.A. (1924) Lése majestè, new Insecta and robbery. Private publication, Gympie, 1 pp.
Girault, A.A. (1925) An essay on when a fly is lovable, the ceremony of baptizing some and unlovely hate. Private publication, Brisbane, 4 pp.
Girault, A.A. (1926) Notes and descriptions of Australian chalcid-flies. IV (Hymenoptera). Insecutor Inscitiae Menstruus, 14, 58–73.
Girault, A.A. (1929) Notes on, and descriptions of, chalcid wasps in the South Australian Museum. Concluding paper. Transactions and Proceedings of the Royal Society of South Australia, 53, 309–346.
Girault, A.A. (1932) New pests from Australia, X. Private publication, Brisbane, 6 pp.
Girault, A.A. (1934) New Capsidae and Hymenoptera, with note on an unmentionable. Private publication, Brisbane, 4 pp.
Graham, M.W.R. de V. (1969) Some Eupelmidae (Hymenoptera: Chalcidoidea) new to Britain, with notes on new synonymy in this family. Proceedings of the Royal Entomological Society of London (B), 38 (7/8), 89–94.
https://doi.org/10.1111/j.1365-3113.1969.tb00236.x
Haliday, A.H. (1844) Contributions towards the classification of the Chalcididae. Transactions of the Entomological Society of London, 3, 295–301.
https://doi.org/10.1111/j.1365-2311.1843.tb02930.x
Hedqvist, K.J. (1970) Hymenoptera, Chalcidoidea, Eupelmidae. In: Hanstrom, B., Brinck, P. & Rudebeck, G. (Eds.), South African Animal Life. Results of the Lund University Expedition in 1950-1951. XIV. Swedish Natural Research Council, Stockholm, pp. 402–443
Howard, L.O. (1897) A study in insect parasitism: A consideration of the parasites of the white-marked tussock moth, with an account of their habits and interrelationships, and with descriptions of new species. United States Department of Agriculture Technical Series, 5, 1–57.
Kalina, V. (1988) Descriptions of new Palearctic species of the genus Eupelmus Dalman with a key to species (Hymenoptera, Chalcidoidea, Eupelmidae). Silvaecultura Tropica et Subtropica, 12, 3–33.
Narendran, T.C. (1996) Alpha systematics of some Eupelmidae (Hymenoptera: Chalcidoidea) from India. Entomon, 21, 77–87.
Narendran, T.C. & Sheela, S. (1996) A new species of Reikosiella Yoshimoto (Hymenoptera: Eupelmidae) from India. Geobios new Reports, 15, 82–84.
Nieves-Aldrey, J.L., Fontal-Cazalla, F., Garrido-Torres, A.M. & Rey del Castillo, C. (2003) Inventario de Hymenoptera (Hexapoda) en El Ventorrillo: un rico enclave de biodiversidad en la Sierra de Guadarrama (España Central). Graellsia, 59 (2–3), 25–43.
https://doi.org/10.3989/graellsia.2003.v59.i2-3.234
Nikol’skaya, M.N. (1952) Khaltsidy fauny SSSR (Chalcidoidea). Opredeliteli po faune SSSR. Vol. 44. Akademiia Nauk SSSR, Moscow, 575 pp. [in Russian, English translation: Nikol’skaya M.N. (1963) The Chalcid Fauna of the U.S.S.R. Israel Program for Scientific Translations, Jerusalem, 593 pp.]
Noonan, G.R. (1984) Type specimens in the insect collections of the Milwaukee public museum. Milwaukee Public Museum, Contributions in Biology and Geology, 58, 14 pp.
Noyes, J.S. (2016) Universal Chalcidoidea Database. World Wide Web electronic publication. Avaliable from: http://www.nhm.ac.uk/chalcidoids (accessed 31 July 2016)
Peck, O. (1963) A catalogue of the Nearctic Chalcidoidea (Insecta: Hymenoptera). Canadian Entomologist, Supplement, 30, 1–1092.
https://doi.org/10.4039/entm9530fv
Peck, O., Bouček, Z. & Hoffer, A. (1964) Keys to the Chalcidoidea of Czechoslovakia (Insecta: Hymenoptera). Memoirs of the Entomological Society of Canada, 34, 1–120.
https://doi.org/10.4039/entm9634fv
Risbec, J. (1952) Contribution à l'étude des Chalcidoïdes de Madagascar. Mémoires de l'Institute Scientifique de Madagascar, Série E, 2, 1–449.
Ruschka, F. (1921) Chalcididenstudien I. Verhandlungen der Zoologisch-Botanischen Gesellschaft in Wien, 70, 234–315.
Temminck, C.J. (1838) Over de geslachten Taphozous, Emballonura, Urocryptus en Diclidurus. Tijdschrift voor natuurlijke geschiednis en physiologie, Amsterdam, 5, 1–34.
Thomson, C.G. (1876) Skandinaviens Hymenoptera. Vol. 4. Typis expressit H. Ohlsson, Lund, 192 pp.
Trjapitzin, V.A. (1978) 6. Family Eupelmidae (eupelmids). In: Medvedev, G.S. (Ed.), Opredelitel Nasekomykh Evropeiskoi Chasti SSR. III. Hymenoptera. II, Nauka, Leningrad, pp. 228–235. [in Russian, English translation: Trjapitzin, V.A. (1987) In: Keys to Insects of the European part of the USSR. Vol III. Hymenoptera. pt. II. Amerind Pub. Co., New Delhi, pp. 411–427.]
Walker, F. (1837) Monographia Chalciditum. Entomological Magazine, London, 4, 349–364, 439–461.
Walker, F. (1839) Monoraphia Chalciditum. Vol. 2. Balliere, London, 100 pp.
Waterston, J. (1916a) Chalcidoidea bred from Glossina morsitans in Nyasaland. Bulletin of Entomological Research, 6, 381–393.
https://doi.org/10.1017/S0007485300043674Waterston, J. (1916b) Notes on African Chalcidoidea - V. Bulletin of Entomological Research, 7 (2), 123–132.
https://doi.org/10.1017/S0007485300017442Westwood, J.O. (1839) Synopsis of the genera of British insects. Order VI. Trichoptera Kirby. Order VII. Hymenoptera Linn. (Piezata Fab.). In: Introduction to the modern classification of insects founded on the natural habits and corresponding organisation; with observations on the economy and transformations of the different families. 2(XIII). Appendix. Longman, Orme, Brown, Green, and Longmans, London, pp. 49–80.
Yoshimoto, C.M. (1969) Description of a new genus of Eupelminae from Hawaii with remarks on its biology (Hymenoptera: Encyrtidae). Pacific Insects, 11, 627–632.
Yoshimoto, C.M. & Ishii, T. (1965) Insects of Micronesia: Hymenoptera Chalcidoidea: Eulophidae, Encyrtidae (part), Pteromalidae. Insects of Micronesia, 19 (4), 109–178.
Zimmerman, E.C. (1958) Insects of Hawaii: Lepidoptera: Pyraloidea. University of Hawaii Press, Honolulu, ix + 456 pp.