Diptera: Scathophagidae) with Description of Gimnomera Freyi Sp
Total Page:16
File Type:pdf, Size:1020Kb
© Entomologica Fennica. 28 November 2019 Review of Fennoscandian species of Gimnomera Rondani (Diptera: Scathophagidae) with description of Gimnomera freyi sp. n. and Ozerovia subg. n. Roger Engelmark & Antti Haarto Engelmark, R. & Haarto, A. 2019: Review of Fennoscandian species of Gimno- mera Rondani (Diptera: Scathophagidae) with description of Gimnomera freyi sp. n. and Ozerovia subg. n. — Entomol. Fennica 30: 145–158. https://doi.org/ 10.33338/ef.87170 The Fennoscandian species of the genus Gimnomera Rondani, 1867 were stud- ied and a new species, G. freyi, is described. Anew subgenus, Ozerovia ,isestab- lished for Gimnomera albipila (Zetterstedt, 1846). Gimnomera albipila (Zetter- stedt, 1846) is redescribed and a lectotype is designated for it. An identification key for the Fennoscandian species of Gimnomera is given. R. Engelmark, Gubböle 129, S-905 93 Umeå, Sweden; E-mail: roger.engelmark @umu.se A. Haarto, Zoological Museum, Biodiversity Unit, University of Turku, FI-20014 Turku, Finland; E-mail: [email protected] Received 9 October 2017, accepted 26 September 2018 1. Introduction There are similarities in the structures of the male genitalia and the female ovipositor of the two The genera Cordilura and Scatomyza were estab- genera and there are no good reasons to keep lished by Fallén (1810) and Zetterstedt (1846) in- them apart. The exception is Gimnomera albipila cluded all the species of the family Scathopha- with different terminalia and the lack of spines on gidae into these two genera in his Diptera Scandi- the frontal part of humeral callus. For these rea- navie. The genus Gimnomera was established by sons, we propose a new subgenus Ozerovia with Rondani (1867) with Cordilura tarsea Fallén, the type species Cordilura albipila Zetterstedt 1819 as the type species. In the revision of the 1846. family Scathophagidae (as Scatomyzidae), About 200 species of Scathophagidae have Becker (1894) established a new genus Cochli- been described from the Palaearctic region (de arium, using Cordilura cuneiventris Zetterstedt, Jong 2000) and approximately 100 occur in Fen- 1846 as type species, and described two new noscandia. Most species of Scathophagidae have Cochliarium species from Central Europe. In ad- northern, arctic or boreo-alpine distribution pat- dition to these species only one additional species terns. This is true also for the Fennoscandian occurring in Fennoscandia, Cordilura albipila, Gimnomera species and only the distribution of was described by Zetterstedt in 1846. G. tarsea (Fallén, 1819) extends to the southern Šifner (2003: 32) synonymised Cochliarium part of Fennoscandia, the other taxa occur in with Gimnomera, since the two genera are simi- mountain areas. In addition to Gimnomera tar- lar. Further species added into the genus have sea, four additional species of Gimnomera are made the earlier diagnostic key characters (body currently known from Fennoscandia: G. dorsata colours and number of dorsocentrals) unreliable. (Zetterstedt, 1838), G. cuneiventris (Zetterstedt, 146 Engelmark & Haarto • ENTOMOL. FENNICA Vol. 30 Fig. 1. The malaise trap by which the female of Gimnomera freyi sp. n. was collected on an alpine willow heath at the Muotkatunturi wilderness area in North Finland. Photo: Eerikki Rundgren. 1846), G. albipila (Zetterstedt 1846) and G. hirta NHRM Swedish Museum of Natural History, Hendel, 1930. Stockholm, Sweden During our review of the Fennoscandian spe- MZLU Museum of Zoology, Lund, Sweden cies of the genus Gimnomera we studied a speci- ZMUT Zoological Museum of the University of men previously identified as a putative species Turku, Finland new to science by R. Frey, and we here describe it MZH Finnish Museum of Natural History, Hel- as Gimnomera freyi sp. n. We also provide a de- sinki, Finland scription of Ozerovia subg. n .aswellasare- ZMHB Museum für Naturkunde, Berlin, Ger- description of Cordilura (Ozerovia) albipila many Zetterstedt, 1846. 2.2. History and specimens 2. Materials and methods of Gimnomera freyi sp. n. 2.1. Depository institutions A specimen of Gimnomera was collected in 1907 and the acronyms by Bertil Poppius who spent a summer in the area of Sarek in northern Sweden (that area became a AHPC Antti Haarto personal collection, National Park in 1910) investigating the insect Mynämäki, Finland fauna on behalf of and financed by Axel REPC Roger Engelmark personal collection, Hamberg. The collected Diptera material was ex- Umeå, Sweden amined by Carl Lundström, who identified ENTOMOL. FENNICA Vol. 30 • Gimnomera freyi sp. n. and Ozerovia subg. n. 147 Fig. 2. Gimnomera castanipes (Becker, 1894). – a. Male lectotype. – b. Female paralectotype. Nematocera, and Richard Frey who worked with The female specimen of Gimnomera freyi sp. the rest of Diptera. Frey identified a certain speci- n. was collected by Eerikki Rundgren in one of men as Microprosopa Becker, 1894 and made the his three expeditions for studying insects at the following notes on it; “a small obviously new Muotkatunturi wilderness area in years 2013– species, unfortunately, there is only a damaged 2015. The specimen was collected by a malaise specimen at hand” (our translation) and he never trap on an alpine willow heath (Fig. 1). described it (Poppius et al. 1917: 693). Luckily, the damages were restricted to some- what wrinkled wings and the specimen could be 2.3. Other studied species and specimens selected as the holotype of G. freyi sp. n. de- scribed below. The coordinates used with the newest Finnish Later another male specimen was collected in findings are given in Finnish National Coordinate the willow shrub along the shore of Paturkårså, a System (yhtenäiskoordinaatisto, YKJ) with addi- small stream on the southern slope of mountain tional geographical coordinates (Heikinheimo & Tarrekaise in 1997 by one of the authors (R.E.). Raatikainen 1971) are given in square brackets. 148 Engelmark & Haarto • ENTOMOL. FENNICA Vol. 30 The sampling sites of the older collected speci- [69°09’59” N, 21°27’ 55” E], 11.–16.VII.2007 mens are not always precise enough to allow full by R. Jussila (both in AHPC). geographical coordinates. Gimnomera castanipes (Becker, 1894). The studied type specimens were the lectotype male 2.4. Images, drawings and terminology (Fig. 2a) St. Moritz, and paralectotype 2, a female (Fig. 2b) St. Moritz [Switzerland] (see Fig. 2a, b Images of the external morphology and the tips of for additional label information). The paralecto- female abdomens were taken using Quick- type 1, a male (St. Moritz), was also studied but PHOTO MICRO software vs 3.1 with Deep Fo- not photographed (all deposited in MNB). cus module, using a Canon EOS 7D MARK II Gimnomera sibirica (Engelmark, 1999). We digital camera and a Olympus SZX16 micro- studied the male holotype, labeled Russia, scope. The images were composed using Wrangel Island, 70°58’N 179°34’E, 23.–24.VII. CombineZP software vs. 2 (Hadley 2010). Most 1994, S.-A. Bengtson leg., and the male paratype of the drawings of male genitalia were made with Russia, delta of Indigirka river, Lopatka, 71°36’ the help of a Euromex Novex RZ trinocular mi- N 148°15’ E, 14.–15.VII.1994, S.-A. Bengtson croscope and an Olympus C-5050 Zoom digital leg. (in MZLU). camera. The photo of the genitalia of the male pa- Gimnomera dorsata (Zetterstedt, 1838). A ratype of Gimnomera freyi sp. n. was taken with a male, collected from Finland: Le : Enontekiö, Nikon SMZ 1000 microscope and a System cam- Jogasjärvi, 76860:2806 [69°09’59” N, 21°27’ era Canon EOS 7D and composed using 55” E], 11.–16.VII.2007 by R. Jussila, was used CombineZP software. for the drawing of the genitalia. The photo of the The characters used in the descriptions, draw- female terminalia was taken of a similarly labeled ings and photos employ the terminology used by specimen. Both specimens are deposited in Šifner (2003). AHPC. Gimnomera hirta Hendel, 1930. A male from Finland: Lkor : Pelkosenniemi, 7453290: 35380- 68 [67°09’58”N, 27°52’29” E], 31.VII.–29.IX. 3. Taxonomy 2015 by J. Salmela (in ZMUT), was used for the 3.1. Genus Gimnomera Rondani drawing of the genitalia. The photo of the female of terminalia was taken from a specimen col- In addition to Gimnomera (Ozerovia ) albipila, lected from Finland: Ok : Suomussalmi, Hossa, there are 17 species of Gimnomera known in the 72635:36188 [65°26’43”N, 29°33’33”E], 30.VI. Palaearctic region, but only four species of them 2011 by A. Haarto (in AHPC). are earlier known from Fennoscandia (Šifner Gimnomera tarsea (Fallén, 1819). A male, 2008). These four species, G. freyi sp. n. (de- collected from Finland: Ks : Kuusamo, Poron- scribed below) and G. (O. ) albipila are included tima, 73487:36083 [66°12’45”N, 29°24’ 11”E], into the key below. 11.VII.2010 by A. Haarto (in AHPC), was used Differential diagnosis. Gimnomera can be for the drawing of the genitalia. The photo of the separated from other scathophagid genera by a female terminalia was taken from a specimen col- combination of the following characters: Head is lected in Finland: N : Tvärminne, Zool. stat. short as well as antennae and palps, kate- [59°50’N, 23°14’E], 19.VI.1931 by Alex[ander] pisternum has one bristle, humeral callus is with Luther (in MZH). small black spines anteriorly (humeral callus of Gimnomera cuneiventris (Zetterstedt, 1846). G. incisurata Malloch, 1920 is without spines), A male, collected in Finland: Le : Enontekiö, legs are without rows of spines and strong bris- Urtasjoki, 7692:3263 [69°12’ N, 21°01’ E], tles. They have two pair of scutellar bristles (ex- 11.VII.2009 by A. Haarto, was used for the draw- ceptions G. alanica (Ozerov, 1999), G. lasio- ing of the genitalia. The photo of the female ter- stoma (Becker, 1894 with one pair) and G. minalia was taken from a specimen collected in mellina Becker, 1900) and small hairs on apical Finland: Le : Enontekiö, Jogasjärvi, 76860:2806 part of wing vein R1 (exceptions G.