Sphiximorpha petronillae ( Rondani, 1850 )

Steenis, Jeroen Van, Ricarte, Antonio, Vujić, Ante, Birtele, Daniele & Speight, Martin C. D., 2016, Revision of the West-Palaearctic species of the tribe Cerioidini (Diptera, Syrphidae), Zootaxa 4196 (2), pp. 151-209 : 197-198

Sphiximorpha petronillae ( Rondani, 1850)

Figs 119 , 127 , 135 , 154 , 169

Sphecomorpha petronillae Rondani, 1850: 213 . Type locality: Italy, Parma [ST 2 ♀ MZLS] Cerioides petronillae: Sack (1932) comb. nov.

Sphiximorpha petronillae: Rondani (1857) comb. nov., Peck (1988), Dirickx (1994), Belcari et al. (1995), Vujić et al. (2009), Burgio et al. (2015).

Redescription. FEMALE ( Figs 119 , 127 ). Body length: 11.3–15.3 mm; wing length: 9.0– 12.6 mm. Head ( Fig. 135 ). Face hardly protruding antero-ventrally without tubercle and very strongly concave below antennae. Head 1.6–1.7 times wider than face just below the antennae. Face with characteristic yellow and black colour pattern; genae, mouth edge and hypostomal bridge black; face with medial black rhombic vitta with two black round maculae laterally; a black fascia at antennal insertion. Frons with yellow posterior fascia. Vertical triangle and ocellar triangle black. Dorsal surface of head capsule yellow. Pile on face, frons, vertex, ocelli and dorsal surface of head capsule long and white; on genae longer, about as long as width of profemur. Frontal prominence 0.49 times longer than wide; relative length of pedicel is as 2.4–2.6: 1: 2.4–2.5. Antennae orange; arista white pilose. Thorax. Scutum black with yellow macula on postpronotum and notopleuron, a yellow vitta anterolaterally of scutellum and two yellow maculae anterior of scutellum. Pleuron black with two yellow maculae on posterior part of posterior anepisternum and on dorsal part of katepisternum. Pile short and white; ventral half of anterior anepisternum with pile slightly shorter than pile on adjacent part of dorsal surface of head capsule. Scutellum entirely yellow. Legs. Coxae and trochanter entirely and basal 1/2–2/3 of femora black, all other parts red-brown. Metatrochanter without setulae; on apico-ventral part of meso- and metatibia some black setulae. Mesofemur with a short flattened area antero-basally; metatrochanter with a very weak sulcus and narrow rim laterally. Metafemur elongate and metatibia without appendix on apico-ventral part, elongate ( Fig. 154 ). Wing. Hyaline except for anterior 1/2 to spurious vein and along vein CuA. Vein R4+5 straight with short appendix into cell r4+5. Cross-vein rm slightly curved. Membrane covered in microtrichia, except anterobasal 1/3 of cell cup; alula 3.2 times longer than wide. Abdomen. Black and yellow coloured. Length of tergite I: II: III: IV: V is as 1: 3.4: 3.8: 4.0: 1.9. Width of yellow fascia medially: length of tergite of respectively tergite II, III, IV and V as 1: 4.7, 1: 6.8, 1: 5.5 and 1: 7.0. Tergite II about as wide as long, anteromedial part most narrow; length of tergite II: width of tergite II at respectively anterior: narrowest: posterior as 1: 0.95: 0.73: 1.4. Tergite II with specific yellow marking enclosing a spades-shaped black marking antero-medially; fascia on tergite II straight, slightly concave postero-lateral; fascia on tergite III–V nearly straight. Tergite IV weakly emarginated. Tergite III and IV with large triangular grey-yellow pollinose maculae with a black non pollinose macula in the centre; tergite V with rectangular grey-yellow pollinose maculae. Sternites I–IV with posterior yellow fascia. MALE. Unknown.

Material examined. Lectotype and paralectotype of Sphecomorpha petronillae : 1 ♀, "373" [red letters on oval white label], "Museo ‘La Specola' / coll. Rondani / Syntypus" [red label], "Lectotype / Sphecomorpha petronillae Rondani, 1850 / design van Steenis 2016 " [red label], (MSNF); 1 ♀, "373" [red letters on oval white label], "Museo ‘La Specola' / coll. Rondani / Syntypus" [red label], "Paralectotype / Sphecomorpha petronillae Rondani, 1850 / design van Steenis 2016 " [red label], (MSNF). Additional material: 2 ♀, (FSUNS, PCV).

Distribution ( Fig. 169 ). Italy, Montenegro.

Biology. Known adult habitats are Quercus cerris forests and Castanea / Quercus / Laurus forests. They visit flowers of Euphorbia sp. ( Rondani 1857), Pyracantha coccinea , and Smyrnium sp. ( Speight 2013). Adults fly in May. Larva unknown.

Figures

FIGURES 118 – 121. Adults of Sphiximorpha species, overall appearance, dorsal view. 118 Sphiximorpha euprosopa male, holotype 119 Sphiximorpha petronillae female, lectotype 120 Sphiximorpha subsessilis male, the Netherlands 121 Sphiximorpha subsessilis female, Greece. Scale line = 1 mm.

FIGURES 122 – 129. Adults of Primocerioides and Sphiximorpha species, overall appearance, lateral view. 122 Primocerioides regale male (holotype of Sphiximorpha hiemalis) 123 Primocerioides regale female, Cyprus 124 Sphiximorpha garibaldii male, holotype 125 Sphiximorpha garibaldii female, (holotype of Ceria tridens) 126 Sphiximorpha euprosopa male, holotype 127 Sphiximorpha petronillae female, lectotype 128 Sphiximorpha subsessilis male, Greece 129 Sphiximorpha subsessilis female, Greece. Scale line = 1 mm.

FIGURES 130 – 137. Head of Primocerioides and Sphiximorpha species, frontal view. 130 Primocerioides regale male (holotype of Sphiximorpha hiemalis) 131 Primocerioides regale female, Cyprus 132 Sphiximorpha euprosopa male, holotype 133 Sphiximorpha garibaldii male, holotype 134 Sphiximorpha garibaldii female, (holotype of Ceria tridens) 135 Sphiximorpha petronillae female, lectotype 136 Sphiximorpha subsessilis male, Greece 137 Sphiximorpha subsessilis female, Greece. Scale line = 1 mm.

FIGURES 151 – 156. Metafemur and tibia of Primocerioides and Sphiximorpha species, lateral view. 151 Primocerioides regale male (holotype of Sphiximorpha hiemalis) 152 Sphiximorpha euprosopa male, holotype 153 Sphiximorpha garibaldii male, holotype 154 Sphiximorpha petronillae female, lectotype 155 Sphiximorpha subsessilis male, The Netherlands 156 Sphiximorpha subsessilis female, Greece. Scale line = 1 mm.

FIGURES 169 – 172. Distribution maps of the West-Palaearctic Cerioidini. 169 Ceriana glaebosa (red square), Sphiximorpha euprosopa (green circle) and Sphiximorpha petronillae (blue triangle) 170 Ceriana vespiformis (red circle) 171 Primocerioides regale (red circle) and Sphiximorpha garibaldii (blue triangle) 172 Sphiximorpha subsessilis (yellow circle).