Abstract
Fossil and extant Diallactiini, which are mycophagous Cecidomyiidae (gall midges), are reviewed globally for the first time. Johnsonomyia Felt, 1908 stat. rev. is restored from synonymy with Haplusia Karsch, 1877 (with Chastomera Skuse, 1888 confirmed as a junior synonym) and both genera are re-defined. Haplusia funebris Plakidas, 2007 and Wyattella lobata Yukawa, 1968 are newly combined in Johnsonomyia. Gynapteromyia Mamaev, 1965 is shown to be a species-rich, almost cosmopolitan genus, which absorbs several of the species previously classified in Haplusia or Chastomera. Gynapteromyia brevipalpis (Mamaev, 1964) comb. nov., G. heteroptera (Mamaev & Spungis, 1980) comb. nov., G. hondrui (Mamaev, 1964) comb. nov., G. indica (Grover, 1971) comb. nov., G. longipalpis (Mamaev, 1964) comb. nov., and G. stricta (Fedotova & Sidorenko, 2005) comb. nov. are all new combinations. †Palaeocolpodia eocenica Meunier, 1904 is considered to be a nomen dubium. Prior to the present study, the tribe Diallactiini contained 28 extant species classified in 6 genera. Previously unworked specimens of Diallactiini gathered by the author in the past 15 years were examined and identified as belonging to 57 different species, all unnamed. From that material, the following new taxa are described: Bruneiplusia gen. nov. (from Brunei), B. kaspraki sp. nov., Gynapteromyia costaricensis sp. nov. (Costa Rica), G. furcata sp. nov. (Costa Rica), G. novaezealandiae sp. nov. (New Zealand), G. tasmanica sp. nov. (Australia), G. temburong sp. nov. (Brunei), G. tenuistylata sp. nov. (Brunei), Haplusia afrotropica sp. nov. (South Africa), Japoplusia gen. nov. (Japan), Jap. honshuensis sp. nov., Johnsonomyia scabra sp. nov. (Costa Rica), John. serrata sp. nov. (South Africa), Loboplusia gen. nov. (Costa Rica), L. zurqui sp. nov., Makrostyles gen. nov. (Costa Rica), Makr. terrifica sp. nov., Mikrostyles gen. nov. (Brunei), Mikr. angustilobata sp. nov., Mikr. latolobata sp. nov., Wahabia gen. nov. (Brunei), Wah. mantici sp. nov., and Wyattella japonica sp. nov. (Japan). A key to the genera of Diallactiini based on male characters is presented. Diallactiini are shown to be a remarkably diverse group in terms of adult morphology. The genitalia of some male Diallactiini represent the most strongly modified such structures known in Winnertziinae. Morphological novelties found in Diallactiini, but no other Cecidomyiidae, include the fringed leg setae of Loboplusia and the furcate palpal sensilla in some Gynapteromyia and Mikrostyles. Diallactiini occur in all zoogeographic regions, with the highest generic and specific diversity found in the tropics (although Afrotropical diallactiines are poorly researched). Local diversity is also highest in the tropics, with as many as 29 species (unnamed or named in this paper) of at least 6 genera found at a single site, Zurquí de Moravia, in the cloud forest of Costa Rica. The best-explored fauna of Winnertziinae, including Diallactiini, is certainly that of Europe, but diallactiine biodiversity there is low and most of the nine European species are rarely encountered in the field. Gynapteromyia brevipalpis is reported from Sweden for the first time.
References
Arillo, A. & Nel, A. (2000) Two new fossil cecidomyiid flies from the Lower Cretaceous amber of Alava (Spain) (Diptera, Cecidomyiidae). Bulletin de la Société Entomologique de France, 105, 285–288.
Barnes, H.F. (1927) Some Cecidomyidae from the Federated Malay States. Journal of the Federated Malay States Museum, 13, 269–274. Borkent, A. & Brown, B.V. (2015) How to inventory tropical flies (Diptera)—One of the megadiverse orders of insects. Zootaxa, 3949 (3), 301–322.
Fedotova, Z.A. & Sidorenko, V.S. (2005) New species of gall midges of the subfamily Porricondylinae from the Russian Far East (Diptera: Cecidomyiidae). International Journal of Dipterological Research, 16, 89–127.
Felt, E.P. (1908) Appendix D. Pp. 286–422, 489–510, pls. 33–34. In his 23d report of the State Entomologist on injurious and other insects of the State of New York 1907. New York State Museum Bulletin, 124, 5–541, 44 pls.
Felt, E.P. (1912) New Itonididae (Dipt.), Journal of the New York Entomological Society, 20, 102–107.
Felt, E.P. (1915) New South American gall midges. Psyche, 22, 152–157.
http://dx.doi.org/10.1155/1915/42393Felt, E.P. (1921) Observations of Johnsonomyia Felt with a description of a new species. The Canadian Entomologist, 53, 96.
http://dx.doi.org/10.4039/Ent5396-4Gagné, R.J. (1978) New synonymy and a review of Haplusia (Diptera: Cecidomyiidae). Proceedings of the Entomological Society of Washington, 80, 517–519.
Gagné, R.J. & Jaschhof, M. (2014) A Catalog of the Cecidomyiidae (Diptera) of the World. 3rd Edition. Digital version 2. Available from: http://www.ars.usda.gov/SP2UserFiles/Place/12454900/Gagne_2014_World_Cecidomyiidae_Catalog_3r
d_Edition.pdf (Accessed 20 Jun. 2016)Grover, P. (1971) Studies on gall‑midges from India XXXIV. On the study of Indian Porricondylini. Cecidologia Indica, 6, 1–38.
Jaschhof, M. (1994) Eine neue Lestremia‑Art aus Marokko (Cecidomyiidae, Lestremiinae). Studia dipterologica, 1, 122–125.
Jaschhof, M. & Hippa, H. (2005) The genus Manota in Costa Rica (Diptera: Mycetophilidae). Zootaxa, 1011, 1–54.
Jaschhof, M. & Jaschhof, C. (2009) The Wood Midges (Diptera: Cecidomyiidae: Lestremiinae) of Fennoscandia and Denmark. Studia dipterologica Supplement, 18, 1–333.
Jaschhof, M. & Jaschhof, C. (2013) The Porricondylinae (Diptera: Cecidomyiidae) of Sweden, with notes on extralimital species. Studia dipterologica Supplement, 20, 1–392.
Karsch, F. (1877) Revision der Gallmücken. Münster i. W., E.C. Brunn; 58 pp., 1 pl.
Mamaev, B.M. (1964) [Gall midges of the USSR. 6. New species of the tribe Porricondylini (Diptera, Cecidomyiidae).] Entomologicheskoe Obozrenie, 43, 894–913. Translated in Entomological Review, 43 (4) (1965), 456–465.
Mamaev, B.M. (1966) [New and little known Palaearctic gall midges of the tribe Porricondylini (Diptera, Cecidomyiidae).] Acta Entomologica Bohemoslovaca, 63, 213–239.
Mamaev, B.M. (1968) [New Nematocera of the USSR (Diptera, Axymyiidae, Mycetobiidae, Sciaridae, Cecidomyiidae).] Entomologicheskoe Obozrenie, 47, 605–616. Translated in Entomological Review, 47 (3) (1969), 371–377.
Mamaev, B.M. (1972) [Review of species and ecological relations of insect decomposers of wood of Ulmus propinqua Loidz.] Rol' Nasekomykh V Leshykh Biogeotsenozakh Primor'ya. Trudy Biologo-pochvennogo Instituta, Novaya Seriya, 7 (110), 106–120.
Mamaev, B.M. (1976) pp. 1–4. In Mamaev, B.M. & Rozhnova, T.A. The description of gall‑midge Wyattella fungicola Mamaev sp. n. (Cecidomyiidae: Diptera) with special reference to characters under scanning electron microscope. Cecidologia Indica, 11, 1–24.
Mamaev, B.M. & Krivosheina, N.P. (1965) [The Larvae of Gall Midges (Diptera, Cecidomyiidae).] Akademiya Nauk USSR, Moscow, 277 pp. Translated (1993) In: Roskam, J.C. & Balkema, A.A. (Eds), Rotterdam, ix + 293 pp.
Marshall, S.A. (2012) Flies: The Natural History and Diversity of Diptera. Firefly Books, Buffalo and Richmond Hill, 616 pp.
Meunier, F. (1904) Monographie des Cecidomyidae, des Sciaridae, des Mycetophilidae et des Chironomidae de l'ambre de la Baltique. Annales de la Société Scientifique de Bruxelles, 28, 12–275, pls. I–XVI.
http://dx.doi.org/10.5962/bhl.title.8565Mohrig, W., Mamaev, B.M. & Spungis, V. (1980). Information on wing-reduced Diptera in the ground-litter. Part X: Cecidomyiidae (Genus Chastomera and Micropteromyia) and Sciaridae (Genus Plastosciara). Zoologische Jahrbücher für Systematik, 107, 148–153.
Panelius, S. (1965) A revision of the European gall midges of the subfamily Porricondylinae (Diptera: Itonididae). Acta Zoologica Fennica, 113, 1–157.
Parnell, J.R. (1971) A revision of the Nearctic Porricondylinae (Diptera: Cecidomyiidae) based largely on an examination of the Felt types. Miscellaneous Publications of the Entomological Society of America, 7, 275–348.
Penttinen, J. & Jaschhof, M. (2009) On the systematics of Sylvenomyia Mamaev & Zaitzev (Diptera, Cecidomyiidae, "Porricondylinae"), with the description of a new species from Finland. Zootaxa, 2032, 48–54.
Plakidas, J.D. (1999) Identification of North American porricondyline larvae (Diptera: Cecidomyiidae). Loyalfield Publishing, Pittsburgh, Pennsylvania, [2 unnumb. +] 129 pp.
Plakidas, J.D. (2007) A new species of Haplusia (Diptera: Cecidomyiidae: Porricondylinae) from southwestern Pennsylvania. Proceedings of the Entolomogical Society of Washington, 109, 81–85.
Rübsaamen, E.H. (1892) Die Gallmücken des Königlichen Museums für Naturkunde zu Berlin. Berliner Entomologische Zeitschrift, 37, 319–411, pls. VII–XVII.
http://dx.doi.org/10.1002/mmnd.18920370305Saigusa, T. (2006) Homology of wing venation of Diptera. Unpublished handout distributed at the 6th International Congress of Dipterology, Fukuoka, Japan, 29 pp.
Skuse, F.A.A. (1888) Diptera of Australia. Part I. Proceedings of the Linnean Society of New South Wales (2), 3 (1–2), 7–144, pls. 2–3.
Spungis, V. 1985. [Gall midges of the subtribe Diallactina (Diptera, Cecidomyiidae) in Latvia.] Latvijas Entomologs, 28, 38–53.
Wootton, R.J. & Ennos, A.R. (1989) The implications of functions on the origin and homologies of the dipterous wing. Systematic Entomology, 14, 507–520.
http://dx.doi.org/10.1111/j.1365-3113.1989.tb00300.xYang, C. (1998) A new subfamily of gall midges from China, with descriptions of the new genus and new species (Diptera: Cecidomyiidae). Wuyi Science Journal, 14, 9–15.
Yukawa, J. (1968) Gall-midges from Formosa and Hong Kong (Diptera: Cecidomyiidae). Kontyû, 36, 250–254.