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A New Species of the Shore-Fly Genus Paralimna Loew, 1862 (Diptera: Ephydridae) from Australia

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A New Species of the Shore-Fly Genus Paralimna Loew, 1862 (Diptera: Ephydridae) from Australia Russian Entomol. J. 29(2): 222–226 © RUSSIAN ENTOMOLOGICAL JOURNAL, 2020 A new species of the shore-fly genus Paralimna Loew, 1862 (Diptera: Ephydridae) from Australia Íîâûé âèä ìóõ-áåðåãîâóøåê ðîäà Paralimna Loew, 1862 (Diptera: Ephydridae) èç Àâñòðàëèè M.G. Krivosheina1,3, A.L. Ozerov2 Ì.Ã. Êðèâîøåèíà1,3, À.Ë. Îçåðîâ2 1A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 119071 Moscow, Russia. E-mail: [email protected] 1Институт проблем экологии и эволюции им. А.Н. Северцова РАН, Ленинский проспект, 33, Москва 119071, Россия. 2Zoological Museum, Moscow Lomonosov State University, Bol’shaya Nikitskaya 2, Moscow 125009, Russia (ZMUM). E-mail: [email protected] 2Зоологический музей, Московский государственный университет им. М.В. Ломоносова, Большая Никитская ул., 2, Москва 125009, Россия. 3corresponding author KEY WORDS: Diptera, Ephydridae, Paralimna bocki, new species, Australia, description, key. КЛЮЧЕВЫЕ СЛОВА: Diptera, Ephydridae, Paralimna bocki, новый вид, Австралия, описание, определительная таблица. ABSTRACT. A new shore-fly species, Paralimna 1995, 2002; Krivosheina, 2013; Raffone, 2012, 2015; (Paralimna) bocki sp. n. from Australia, is described. Ale-Rocha, Mathis, 2015]. Attention of many dipterol- Due to general brown coloration and many strong fa- ogists was attaracted to this group of Diptera because cial setae the new species is differentiated well exter- in this tribe we discover the largest and remarkable nally from the other Australian species of the subgenus specimens among Ephydridae with body length to 12 Paralimna Loew, 1862. The new species differs by the mm. Cogan completed first significant revision of this shape of presurstyli in posterior view: presurtyli of P. group, considering it inside tribe Notiphilini, and de- (P.) bocki broader than those of P. (P.) millepuncta scribed more than 10 species mainly from the genus and significantly longer and narrower than in P. (P.) Paralimna [Cogan, 1968]. The latest revision of the spatiosa. New World species of the genus Paralimna allowed to describe 15 new to science species [Ale-Rocha, Math- РЕЗЮМЕ. Новый вид мух-береговушек is, 2015]. In the same year G. Raffone described 2 new Paralimna (Paralimna) bocki sp. n. описан из Авст- species of Paralimna from Africa [Raffone, 2015]. ралии. По коричневой окраске тела и большому Paralimna was divided into two subgenera for a количеству щетинок на лице новый вид внешне long time: Paralimna Loew, 1862 and Phaoisterna хорошо отличается от других видов подрода Cresson, 1916. These subgenera are distinguished by Paralimna Loew, 1862, известных из Австралии. the shape of the eye, which is nearly round in Paralim- Новый вид отличается также по форме пресурсти- na and the height of which is distinctly exceeding its лей, которые значительно шире, чем у P. (P.) width in Phaiosterna, and gena high in Paralimna and millepuncta и длиннее и уже, чем у P. (P.) spatiosa. short in Phaiosterna. The subgenus Phaiosterna was described by Cresson in 1916 and was accepted by Introduction subsequent authors. Mathis and Zatwarnicki [2002] revised Phaoisterna with 6 included species from the The genus Paralimna Loew, 1862 includes 100 Old and New Worlds. Four more species were de- described species and is one of the richest in species scribed in this subgenus [Raffone, 2012, 2015]; so the genera in the tribe Dryxini, proposed by T. Zatwarnicki number of Phaiosterna species reached ten. The sub- [1992]. This tribe comprises 9 genera, distributed both genus Paralimna was richer in species and more di- in the Old and New Worlds with Afrotropical Region verse and divided into several species groups [Cogan, being especially rich in species [Mathis, Zatwarnicki, 1968]. One of these groups, limbata, was surely mono- How to cite this article: Krivosheina M.G., Ozerov A.L. 2020. A new species of the shore-fly genus Paralimna Loew, 1862 (Diptera: Ephydridae) from Australia // Russian Entomol. J. Vol.29. No.2. P.222–226. doi: 10.15298/ rusentj.29.2.19 A New Species of the Shore-Fly Genus Paralimna Loew 223 phyletic as characterized by gena being secondary short usually present; lacking in Papuama Mathis et Zatwar- [Ale-Rocha, Mathis, 2015]. This fact was discussed in nicki and one species of Oedenops Becker); mid- and the work of Mathis and Zatwarnicki [2002] by separa- hindfemora normally developed, length much shorter tion of the group in the Key to subgenera of Paralimna. than that of abdomen ................................................... 5 As a result, this species group was raised to subgeneric 2. Ocellar seta present, although short, inserted slightly in front of anterior ocellus; reclinate fronto-orbital seta level and the new subgenus Coganolimna Ale-Rocha et present; anepisternum bearing one well-developed seta Mathis, 2015 was described [Ale-Rocha, Mathis, 2015]. along posterior margin; vein R1 bare along dorsum; R The species of Coganolimna are known from Afro- stem vein lacking setulae; crossvein dm–cu normally tropical Region only. The members of the other developed, nearly straight, forming acute inner angle two subgenera are distributed widely in the Old with vein M (southern Afrotropical) .............................. and New Worlds countries, including Australasi- ............................................ Corythophora Loew, 1862 an/Oceanian. — Ocellar seta lacking; reclinate fronto-orbital seta lacking; The Australian fauna of Paralimna was investigat- anepisternum bearing two to three thin, long, hair-like setae along posterior margin; vein R bearing several ed by Ian R. Bock [1988] who mentioned 9 species 1 from this genus. The further changes in the nomencla- setulae along dorsum; R stem vein basad of humeral crossvein bearing several pale thin setulae on ventral ture of Ephydridae replaced 3 of these species to other surface; crossvein dm–cu moderately long to long, sinu- ephydrid genera: Paralimna calva Bock, 1988 was ous ................................................................................ 3 attributed to newly described genus Papuama Mathis 3. Scutellum with apical tubercles bearing setae and lateral et Zatwarnicki, 2002; P. uniseta Malloch, 1925 and P. projections lacking setae; wings maculate; both vte and javana van der Wulp, 1891 — to the genus Oedenopi- vti setae reduced ................. Dryxella Krivosheina, 2013 forma Cogan, 1968 [Mathis, Zatwarnicki, 2002, 2012]. — Scutellum without apical tubercles bearing setae and Two species, P. (Phaiosterna) fusca Bock, 1988 and without lateral projections; wings generally hyaline ex- P. (Ph.) lineata de Meijere, 1908 belong to the subge- cept in a few cases; both vte and vti setae or at least vte nus Phaiosterna [Mathis, Zatwarnicki, 2002]. The rest seta developed .............................................................. 4 of species, 4 species, belong to the subgenus Paralim- 4. Arista bearing seven to nine long, dorsal hairs; katepister- num lacking row of slender setae along dorsal margin na: P. (P.) stirlingi Malloch, 1926, P. (P.) millepuncta and katepisternal seta reduced; crossvein dm–cu shal- Malloch, 1925, P. (P.) pilosa Bock, 1988 and P. (P.) lowly sinuous, generally forming angle with adjacent spatiosa Bock, 1988. margin of wing; mid- and hindfemora normally devel- The determination of Paralimna (Paralimna) spec- oped, much shorter than length of abdomen (India, Iran, imens from the collection of the Zoological Museum of Oman) .................. Omyxa Mathis et Zatwarnicki, 2002 the Moscow Lomonosov State University allowed us — Arista bearing 12 or more long, dorsal hairs; katepister- to discover one new species from this subgenus. num bearing a row of slender setae near dorsal margin and katepisternal seta usually well developed (second- arily reduced or absent in some species); crossvein dm– Materials and methods cu sinuous, long, generally running parallel with adja- cent margin of wing; mid- and hindfemora elongate, The descriptive terminology follows that used by subequal to length of abdomen (Afrotropical, Austra- Mathis & Zatwarnicki [2002]. Dissections of male ter- lian, Oriental) ........... Dryxo Robineau-Desvoidy, 1830 minalia were performed using the following method: 5. Katepisternal seta absent or very weakly developed ..... 6 microforceps were used to remove the most end of — Katepisternal seta present, usually well developed (some- male abdomen, which was macerated in a potassium or times pale) ..................................................................... 7 sodium hydroxide solution. Cleared genitalia were 6. Arista bearing three to five dorsal rays (Afrotropical, rinsed in distilled water and then in 70% ethanol, the Australian [Queensland], Nearctic [southern], Neotropi- cal, Oriental, Palearctic [Egypt, Israel, Japan]) ............. figures were made from genitalia placed to glycerin. ................................................. Oedenops Becker, 1903 Rest of abdomen and genital structures were placed in — Arista bearing eight or more dorsal rays (Australasian, a plastic microvial filled with glycerin and attached to Oriental) .......... Papuama Mathis et Zatwarnicki, 2002 the pin supporting the insect from which it was re- 7. R stem vein usually bearing one to three setulae on moved. dorsum (usually two; lacking in Oedenopiforma javana The holotype and paratypes of the new species are (Wulp)). Two to three long facial setae, length subequal deposited in the collection of the Zoological Museum to combined length of pedicel and basal flagellomere, if of Moscow State
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