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. 2018 Jul 5:(771):105-138.
doi: 10.3897/zookeys.771.20481. eCollection 2018.

Revision of the Palaearctic species of the Merodon desuturinus group (Diptera, Syrphidae)

Ante Vujić  1 , Snežana Radenković  1 , Laura Likov  1
Affiliations

Revision of the Palaearctic species of the Merodon desuturinus group (Diptera, Syrphidae)

Ante Vujić et al. Zookeys. .

Abstract

This revision of material belonging to the Merodon desuturinus group from the Palaearctic Region resulted in the delimitation of four species: Merodon cabanerensis Marcos-García, Vujić & Mengual, 2007; Merodon desuturinus Vujić, Šimić & Radenković, 1995; Merodon neolydicus Vujić, nom. n.; and Merodon murorum Fabricius, 1794. Merodon murorum is redescribed. A neotype for Merodon auripilus Meigen, 1830 is designated, which is a new junior synonym of Merodon murorum. The related Afrotropical species Merodon cuthbertsoni Curran, 1939 is re-evaluated and compared to its sibling Palaearctic taxon Merodon desuturinus. An identification key for the Merodon desuturinus group is provided.

Keywords: Merodon auripilus; Merodon cuthbertsoni; Merodon murorum; Merodon neolydicus nom. n..

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Figures

Figure 1.
Figure 1.
Merodon neolydicus Vujić, nom. n. male genitalia. A Epandrium, lateral view B Epandrium, ventral view C Hypandrium, lateral view D Aedeagous. Abbreviations: al-anterior surstyle lobe, pl-posterior surstyle lobe, c-cercus, e-ejaculatory apodeme, p-phallapodeme, s-lateral sclerite of aedeagus, it-inner thorn on medial part of surstylus, dp-distal prolongation on anterior surstyle lobe, vms-ventral margin of surstylus, vr-ventral ridge of theca, t-theca. Scale bar: 0.2 mm.
Figure 2.
Figure 2.
Male head, lateral view. A Merodon planifacies B Merodon neolydicus Vujić, nom. n. C Merodon murorum D Merodon desuturinus. Scale bar: 2 mm.
Figure 3.
Figure 3.
Male head, dorsal view. A Merodon flavocerus B Merodon neolydicus Vujić, nom. n. C Merodon murorum D Merodon desuturinus. Scale bar: 2 mm.
Figure 4.
Figure 4.
Male antennae, lateral view. A Merodon flavocerus B Merodon desuturinus C Merodon murorum D Merodon neolydicus Vujić, nom. n. Scale bar: 1 mm.
Figure 5.
Figure 5.
Metaleg, lateral view. A Merodon neolydicus Vujić, nom. n., male B Merodon murorum, male C Merodon neolydicus Vujić, nom. n., female D Merodon murorum, female. Scale bar: 1 mm.
Figure 6.
Figure 6.
Male abdomen, dorsal view. A Merodon neolydicus Vujić, nom. n. B Merodon murorum C Merodon desuturinus D Merodon cabanerensis. Scale bar: 2 mm.
Figure 7.
Figure 7.
Female abdomen, dorsal view. A Merodon neolydicus Vujić, nom. n. B Merodon murorum C Merodon desuturinus D Merodon commutabilis. Scale bar: 2 mm.
Figure 8.
Figure 8.
Female antennae, lateral view. A Merodon flavocerus B Merodon desuturinus C Merodon murorum D Merodon neolydicus Vujić, nom. n. E Merodon commutabilis. Scale bar: 1 mm.
Figure 9.
Figure 9.
Merodon cabanerensis male genitalia. A Epandrium, lateral view B Epandrium, ventral view C Hypandrium, lateral view D Part of hypandrium, ventral view. Abbreviations: al-anterior surstyle lobe, pl-posterior surstyle lobe, c-cercus, s-lateral sclerite of aedeagus, it-inner thorn on medial part of surstylus, dp-distal prolongation on anterior surstyle lobe, t-theca, vr-ventral ridge of theca. Scale bar: 0.2 mm.
Figure 10.
Figure 10.
Distribution map of Merodon cabanerensis, Merodon desuturinus, Merodon neolydicus Vujić, nom. n., and Merodon murorum.
Figure 11.
Figure 11.
Merodon desuturinus male genitalia. A Epandrium, lateral view B Epandrium, ventral view C Hypandrium, lateral view. Abbreviations: al-anterior surstyle lobe, pl-posterior surstyle lobe, c-cercus, it-inner thorn on medial part of surstylus, dp-distal prolongation on anterior surstyle lobe, s-lateral sclerite of aedeagus. Scale bar: 0.2 mm.
Figure 12.
Figure 12.
Merodon murorum male genitalia. A Epandrium, lateral view B Epandrium, ventral view C Part of hypandrium, ventral view D Hypandrium, lateral view, lateral view; ag-apical globule, al-anterior surstyle lobe, pl-posterior surstyle lobe, c-cercus, s-lateral sclerite of aedeagus, it-inner thorn on medial part of surstylus, dp-distal prolongation on anterior surstyle lobe, vr-ventral ridge of surstylus, t-theca. Scale bar: 0.2 mm.
Figure 13.
Figure 13.
Merodon cuthbertsoni, holotype, male. (A, C–D) Merodon desuturinus, male (B): A, B head, dorsal view C antenna D metaleg. Scale bars: 1 mm (A, B), 0.2 mm (C), 1 mm (D).
Figure 14.
Figure 14.
Merodon cuthbertsoni, holotype, male genitalia. A Epandrium, lateral view B Epandrium, ventral view C Hypandrium, lateral view. Abbreviations: al-anterior surstyle lobe, pl-posterior surstyle lobe, c-cercus, s-lateral sclerite of aedeagus, it-inner thorn on medial part of surstylus, dp-distal prolongation on anterior surstyle lobe, vms-ventral margin of surstylus, vr-ventral ridge of theca. Scale bar: 0.2 mm.
Figure 15.
Figure 15.
Surstylus, lateral view. A Merodon flavocerus B Merodon capensis C Merodon drakonis D Merodon melanocerus (lateral and ventral view) E Merodon commutabilis. Abbreviations: al- anterior surstyle lobe, pl-posterior surstyle lobe, it-inner thorn on medial part of surstylus, vms-ventral margin of surstylus. Scale bar: 0.2 mm.
Figure 16.
Figure 16.
Part of hypandrium. A Merodon capensis B Merodon drakonis C Merodon melanocerus D Merodon commutabilis. Abbreviations: w-ventral wing of theca, vr-ventral ridge of theca, sl-subapical lamella of theca, s-lateral sclerite of aedeagus. Scale bar: 0.2 mm.
Figure 17.
Figure 17.
Head, female. A Merodon planifacies B Merodon melanocerus C Merodon drakonis. A lateral view B–C dorsal view. Scale bar: 1 mm.
Figure 18.
Figure 18.
Head, female. A Merodon flavocerus B Merodon murorum. Scale bar: 1mm.
Figura 19.
Figura 19.
A Merodon neolydicus Vujić, nom. n. B Merodon drakonis C Merodon melanocerus. A, B metatrochanter, female, C abdomen, female. Scale bar: 1 mm.
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References

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