Myolepta vara ( Panzer, 1798 )

Steenis, Jeroen Van, 2020, A new species of the genus Myolepta Newman (Diptera: Syrphidae), with short description and key to all species of the M. vara subgroup, Zootaxa 4750 (3), pp. 370-390 : 383-386

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) .

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).

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.

Figures

FIGURE 2. Adult habitus of Myolepta hoverflies, male; A, C, E. dorsal view; B, D, F. lateral view. A, B. Myolepta obscura, Paris, France, fig no JvSMo1-003. C, D. Myolepta shikokuana, Fukui pref., Japan, fig no JvSMo1-004. E, F. Myolepta vara, Mechelen, the Netherlands, fig no JvSMo1-005. 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.