A new species of the genus Myolepta Newman (Diptera: Syrphidae), with short description and key to all species of the M. vara subgroup Author Steenis, Jeroen Van text Zootaxa 2020 2020-03-12 4750 3 370 390 journal article 10.11646/zootaxa.4750.3.4 05055b8b-79f0-4143-a3b4-d901963e6e25 1175-5326 3707476 716CB870-1041-47B8-8423-0B5D04355E94 Myolepta vara ( Panzer, 1798 ) Figs 2 E−F, 5C−D, 11D, 13D, 14D−E, 15A–C, 16D−E, 17E Syrphus varus Panzer, 1798: 8 ; the type depository is unknown = Myolepta helvetica ( Wainwright, 1911: 107 ) Myolepta vara : Marcos-García 1988: 331 ; Hauser 1998: 18 ; Reemer et al . 2005: 566 ; Reemer et al . 2009: 258 ; De Courcy Williams et al . 2011: 192 ; Prokhorov et al . 2018: 128 . Material examined . France : “ 28-6-1993 / G. de la Caranca / Pyr. Orientales”, 1♂ ( GPA ) ; “FRANCE, dep. Yonne / Parc Naturel Régional du / Morvan. Foret au Duc. / 47°21’11” N- 004°00’32”E / 4-VI-2005 . M. Reemer ”, 1♀ ( MRL ) ; Germany : “ Germany : Hessen / Hungen Steinheim / GK: 34952-55897 / 5-V-2005 A. v. Eck ”, 1♂ , 2♀ ( AET ); Pahna-forst // b. Altenburg // Thür 26.5.49 // Krieger”, “rufic // ornis”, “coll. V .S. v.d. Goot // Acq. 1979”, 1♂ ( NBC ) ; “2 // 949”, “ Sammlung // Hiendlmayr “, “ München // [illegible, cut off margin]”, 1♀ ( NBC ) ; Greece : “ Greece Peloponnesos / Arkadia Karderas Mt Menalo / N 37°37’43” E 22°18’01” / 16 - v - 2012 alt. 980 m . / W. van Steenis wvs1196”, 1♂ ( WSB ) ; “ Griekenland / Pindos Mt. ( Elati ) / 26-06-2004 / leg. Pennards ”, 1♀ ( GPA ) ; “ Greece , Epirus , Kranea / NE of Metsovo , 900 m . / 39°54‘05“N 21°16‘22“E / 17.v.2015 , leg Th. Zeegers / on Eriobotrya ”, 1♀ ( TZS ) ; Hungary : “HUNGARY. Duna Ipoly / Nemzeti Park ( Danube Bend ) / 3 km E of Pilissentkerest / 7-v-2008 . S. Turnhout ”, 1♀ ( MRL ) ; Luxemburg : “ Luxembourg / Kautenbach camping / along Clerve Rau / 11 - VI - 2012 alt. 255 m . / Gauss-Lux 70 - 113 / N 49°57’20 ’- E 6°01’45” / leg. W. van Steenis ”, 1♂ ( WSB ) ; same data as previous except “ 15 - VI - 2012 ”, 1♀ ( WSB ) ; The Netherlands : “NL, Mechelen / Elzetterbos / amersf.co. / 4-V-2012 / leg. J. van Steenis ”, “ Myolepta sub-group / fig no JvSMo1-005”, 1♂ , ( JSA ) ; same data as previous, except “ Myolepta sub-group / fig no JvSMo1-009”, 1♀ ( JSA ) ; same data as previous, except no figure, 1♀ ( JSA ) ; “ Vijlen / Elzetterbos / amersf.c. 193-1998 / 09-05-1998 / W. van Steenis / B. Achterkamp ”, 1♀ ( WSB ) ; same data as previous except “W v. Steenis / L. Lankreijer ”, 1♀ ( WSB ) ; “NETHERLANDS. Vaals / Vijlenerbos AC : 196- / 308. 14. V .2015 . M. Reemer / ”, 2♀ ( MRL ) ; “ 2. V .2009 . Savelsbos / Moerslag. AC : 181-311 / leg. S. Turnhout ”, 1♀ ( MRL ) ; Romania : “ Herculane // leg. 7. V .1986 // Vl. Bradescu ”, 1♂ ( NBC ) ; Slovenia : “locq. Slov. // Metlika v.83 // Coll. W. Maassen ”, 1♀ ( NBC ) . FIGURE 13 . Adult metafemur and tibia of Myolepta hoverflies, lateral view. A . Myolpeta angustifacia sp. n. , paratype female, Shadriha river, Russia, fig no JvSMo1-006. B . Myolepta obscura , female, Pichoy, France, fig no JvSMo1-008. C . Myolepta shikokuana , male, Fukui pref., Japan, fig no JvSMo1-004. D . Myolepta vara , female, Mechelen, the Netherlands, fig no JvS- Mo1-009. Scale 1.0 mm. Short description . Face whitish-grey pollinose except for large non-pollinose shiny black trapezoid area from central knob down to mouth edge in male, like in the female; frons in female with grey-pollinose narrow vitta along eye margin reaching posteriorly as far as anterior ocellus. Mesonotum with dense, short, orange-yellow and slightly to strongly sub appressed pile; anterior margin of scutum rather narrowly grey-pollinose; pleura more or less entirely non-pollinose and shiny except pollinose and dull on proepimeron, except postero-ventral corner which is non-pollinose and shiny, anterior 1/6–1/3 of anterior anepisternum and sometimes pilose dorsal part of katepisterum weakly pollinose and sub-shiny; scutellum with rather long orange-yellow pile. Mesofemur with rather short yellow pile, longest ventral pile about 2/3 as long as width of metafemur. Terga II and III medially short appressed black pilose, along lateral margin with long yellow pile; tergum IV on anterior half with erect black pile and on posterior half with appressed longer yellow pile; tergum I entirely and densely grey pollinose; sterna rather densely grey-brown pollinose except for lateral margin of terga II–IV with long but narrow non-pollinose and shiny vitta. Genitalia ( Figs 15 A–C): surstylus with concave ventral margin, rounded apex and straight dorsal margin, some long yellow pile on baso-dorsal corner; hypandrium in ventral view basally rounded with very weak medio-lateral corners, apical part only slightly narrower; superior lobe with rather wide and rounded incision apico-ventrally, apico-dorsal corner rounded; aedeagus baso-dorsally with long triangular extension and without apico-dorsal extension. Body length 9.5–11.1 mm (male), 10.6–11.7 mm (female); wing length 7.6–8.5 mm (male), 7.9–9.2 mm (female). FIGURE 14 . Adult head of Myolepta hoverflies, dorsal view. A . Myolepta obscura , male, Paris, France, fig no JvSMo1-003. B . Myolepta obscura , female, Santiago do Cacém, Portugal, fig no JvSMo1-012. C . Myolepta shikokuana , male, Fukui pref., Japan, fig no JvSMo1-004. D . Myolepta vara , male, Mechelen, the Netherlands, fig no JvSMo1-005. E . Myolepta vara , female, Mechelen, the Netherlands, fig no JvSMo1-009. Scale 1.0 mm. FIGURE 15 . Male genitalia of Myolepta vara , Mechelen , the Netherlands, fig no JvSMo1-005. A . lateral view. B . aedeagus, lateral view. C . hypandrium, ventral view. Scale 0.5 mm. Remarks . The first records for Luxemburg are here presented. The species Myolepta vara is well known based on the description in Reemer et al . (2005) , so it was unnecessary to examine the type . Distribution . Widespread in central Europe from northern Germany and the south of the Netherlands to Spain and Greece and eastwards to Azerbaijan .