Fig 1.
Distribution of the sample localities for the Merodon melanocerus subgroup.
Fig 2.
Merodon capensis sp. n., male genitalia (holotype).
(A) epandrium, lateral view; (B) surstyle lobe, ventral view; (C) hypandrium, lateral view; (D) apical part of the hypandrium, ventral view; (a) anterior lobe of surstyle; (t) inner thorn on median part of surstyle; (p) posterior lobe of surstyle; (c) cercus; (l) lateral sclerite of aedeagus; (r) ventral ridge of theca.
Fig 3.
Merodon melanocerus Bezzi, 1915, male genitalia (RSA).
(A) epandrium, lateral view; (B) surstyle lobe, ventral view; (C) hypandrium, lateral view; (D) aedeagus with accessory structures, lateral view; (a) anterior lobe of surstyle; (at) inner thorn on anterior lobe of surstyle; (p) posterior lobe of surstyle; (t) inner thorns on median part of surstyle; (c) cercus; (l) lateral sclerite of aedeagus; (r) ventral ridge of theca.
Fig 4.
(A, B) Merodon planifacies Bezzi, 1915 (holotype): (A) lateral view; (B) face, anterior view. (C) Merodon desuturinus Vujić, Šimić et Radenković, 1995 (Kopaonik, Serbia), lateral view.
Fig 5.
Pile on ocellar triangle of Merodon drakonis sp. n. (SEM).
Fig 6.
Merodon capensis sp. n. (male holotype RSA, Cape Province, female paratype RSA, Northern Cape, Hantam Botanical Garden).
(A) head of male, lateral view: (o) oral margin; (B) head of female, lateral view; (C) antenna of male, lateral view; (D) antenna of female, lateral view; (E) hind leg of male, anterior view; (F) hind leg of female, anterior view.
Fig 7.
Merodon flavocerus sp. n. (paratype, RSA).
(A) head of male, lateral view: (o) oral margin; (B) head of female, lateral view; (C) head of male, dorsal view; (D) antenna of male, lateral view: (f) fossette; (E) antenna of female, lateral view.
Fig 8.
Merodon commutabilis sp. n., male genitalia (holotype, KwaZulu-Natal, RSA).
(A) epandrium, lateral view; (B) surstyle lobe, ventral view; (C) hypandrium, lateral view; (D) apical part of the hypandrium, ventral view; (a) anterior lobe of surstyle; (p) posterior lobe of surstyle; (t) inner thorns on median part of surstyle; (c) cercus; (l) lateral sclerite of aedeagus; (s) subapical lamella of theca; (w) lateral wings of theca.
Fig 9.
(A-F) Merodon melanocerus Bezzi, 1915 (RSA): (A) head of male, lateral view: (o) oral margin; (B) head of female, lateral view; (C) vertex of male, dorsal view; (D) head of female, dorsal view; (E) antenna of male, lateral view; (F) antenna of female, lateral view. (G) Merodon drakonis sp. n. (RSA, Drakensberg Mountains): vertex of female, dorsal view.
Fig 10.
Bayesian interference tree based on analysis of combined 3'- and 5'- fragments of the COI gene.
Numbers on nodes depict Bayesian posterior probabilities. The scale bar indicates expected number of changes by site. Four lineages observed in genus Merodon are marked on the tree. For species that belong to Merodon melanocerus subgroup, photos of adult specimens and male genitalia are presented.
Fig 11.
Merodon drakonis sp. n., male genitalia (holotype RSA, Drakensberg Mountains).
(A) epandrium, lateral view; (B) surstyle lobe, ventral view; (C) hypandrium, lateral view; (D) apical part of the hypandrium, ventral view; (a) anterior lobe of surstyle; (p) posterior lobe of surstyle; (t) inner thorns on median part of surstyle; (c) cercus; (l) lateral sclerite of aedeagus; (s) subapical lamella of theca; (w) lateral wings of theca.
Fig 12.
(A, B) Merodon flavocerus sp. n. (paratype, RSA); (C, D) Merodon melanocerus Bezzi, 1915 (RSA); (A, C) male; (B, D) female.
Fig 13.
Merodon flavocerus sp. n., male genitalia (paratype, RSA); (A) epandrium, lateral view; (B) surstyle lobe, ventral view; (C) hypandrium, lateral view; (D) apical part of the hypandrium, ventral view; (a) anterior lobe of surstyle; (p) posterior lobe of surstyle; (t) inner thorns on median part of surstyle; (c) cercus; (l) lateral sclerite of aedeagus; (r) ventral ridge of theca.
Fig 14.
Maximum likelihood tree based on analysis of combined 3'- and 5'- fragments of the COI gene.
The tree is drawn to scale, with branch lengths measured in the number of substitutions per site.