Eumerus coeruleus ( Becker, 1913 )

Gilasian, Ebrahim, Steenis, Jeroen van & Parchami-Araghi, Mehrdad, 2020, Review of the Eumerus tricolor species group (Diptera: Syrphidae) in Iran, with description of six new species, European Journal of Taxonomy 722, pp. 106-152 : 122

Eumerus coeruleus ( Becker, 1913)

Figs 3E , 5B , 6E , 8B , 14 C–D, 15A–B, 18D, 20D, 22D

Lampetia coerulea Becker, 1913: 602 .

Diagnosis

Eyes pilose ( Fig. 14 C–D), males dichoptic, distance between eyes in males less than width of ocellar triangle ( Fig. 15 A–B); face with whitish pile; ocellar triangle equilateral ( Fig. 15A ); basoflagellomere orange; scutum and scutellum with dense and long whitish pile ( Figs 6E , 8B ), weakly pollinose; pleura above metacoxa bare; legs long pilose; tarsi and basal half of tibiae orange; metafemur enlarged; metatarsus without dense thick black pile fringe; wing hyaline, entirely covered with microtrichia; vein R 4+5 deeply sinuate ( Fig. 5B ); abdominal terga II–IV orange laterally; terga II–III with distinct median black vitta ( Fig. 3E ); male genitalia as in Figs 18D , 20D , 22D .

Material examined

Holotype

IRAN • ♂; “P. Beluchist. / 13.V.1901 // Lampetia coerulea Beck. / det. Becker // Holotypus Eumerus / coeruleus / Becker, 1913 [red label]”; ZISP.

Other material

IRAN • 1 ♀; “IRAN: Khorasan prov., Ghoochan / Emamgholi, Chovinli / 37°25′44.1″N, 058°31′57.3″E, / 1746 m.; 30.v.2006 / E. Gilasian // Eumerus coeruleus / ( Becker, 1913)”; HMIM • 1 ♀; same collection data as for preceding; JSA • 23 ♂♂, 59 ♀♀; “ IRAN: Markazi prov., Haftad / Qolleh Protected Area, / Chekab Valley , 2219 m, / 34°07′0.5″N, 050°16′25.3″E, / 25.v–15.vi.2016, Malaise trap / near pool, E. Gilasian & M. / Parchami-Araghi // Eumerus coeruleus / ( Becker, 1913)”; HMIM • 2 ♂♂; same collection data as for preceding; JSA .

Distribution

Central Asia, Iran (Sistan & Balouchestan prov., Kuh-e Taftan; Khorasan and Markazi provinces) ( Peck 1988).

Figures

Fig. 3. Adult habitus, ♂, dorsal view. A. Eumerus atricolorus Gilasian & van Steenis sp. nov., holotype (HMIM). B. E. brevipilosus Gilasian & van Steenis sp. nov., holotype (HMIM). C. E. falsus Becker, 1922, Chekab Valley, Iran (HMIM). D. E. chekabicus Gilasian & van Steenis sp. nov., holotype (HMIM). E. E. coeruleus (Becker, 1913), Chekab Valley, Iran (JSA). F. E. jacobsoni Becker, 1913, Chekab Valley, Iran (JSA). G. E. kazanovzkyae Paramonov, 1927, abdomen, Paveh, Iran (HMIM). H. E. longitarsis Peck, 1979, Chekab Valley, Iran (JSA). Scale bars = 1.0 mm.

Fig. 5. Adult habitus, ♀, dorsal view. A. Eumerus brevipilosus Gilasian & van Steenis sp. nov., paratype (HMIM). B. E. coeruleus (Becker, 1913), Ghoochan, Iran (HMIM). C. E. longitarsis Peck, 1979, Mian Jangal, Iran (JSA). D. E. persarum Stackelberg, 1961, Bazman, Iran (JSA). Scale bars = 1.0 mm.

Fig. 6. Adult habitus, ♂, lateral view. A. Eumerus atricolorus Gilasian & van Steenis sp. nov., holotype (HMIM). B. E. brevipilosus Gilasian & van Steenis sp. nov., holotype (HMIM). C. E. falsus Becker, 1922, Chekab Valley, Iran (HMIM). D. E. chekabicus Gilasian & van Steenis sp. nov., holotype (HMIM). E. E. coeruleus (Becker, 1913), Chekab Valley, Iran (JSA). F. E. jacobsoni Becker, 1913, Chekab Valley, Iran (JSA). G. E. kazanovzkyae Paramonov, 1927, Paveh, Iran (HMIM). H. E. longitarsis Peck, 1979, Chekab Valley, Iran (JSA). Scale bars = 1.0 mm.

Fig. 8. A–E. Adult habitus, lateral view. F. Basicosta. A–D. Female. E–F. Male. A. Eumerus brevipilosus Gilasian & van Steenis sp. nov., paratype (HMIM). B. E. coeruleus (Becker, 1913), Ghoochan, Iran (HMIM). C. E. longitarsis Peck, 1979, Mian Jangal, Iran (JSA). D. E. persarum Stackelberg, 1961, Bazman, Iran (JSA). E. E. tricolor (Fabricius, 1798), Paleochori, Greece (JSA). F. E. tadzhikorum Stackelberg, 1949, Chekab Valley, Iran (JSA). Scale bars = 1.0 mm. Abbreviations: ac = anterodorsal costal setae; pc = posterodorsal costal setae.

Fig. 14. Head, ♀, dorsal view (A, C, E, G) and lateral view (B, D, F, H). A–B. Eumerus brevipilosus Gilasian & van Steenis sp. nov., paratype (HMIM). C–D. E. coeruleus (Becker, 1913), Ghoochan, Iran (HMIM). E–F. E. longitarsis Peck, 1979, Mian Jangal, Iran (JSA). G–H. E. persarum Stackelberg, 1961, Bazman, Iran (JSA). Scale bars = 0.5 mm.

Fig. 15. Head, ♂, dorsal view (A, C, E, G) and lateral view (B, D, F, H). A–B. Eumerus coeruleus (Becker, 1913), Chekab Valley, Iran (JSA). C–D. E. jacobsoni Becker, 1913, Chekab Valley, Iran (JSA). E–F. E. kazanovzkyae Paramonov, 1927, Paveh, Iran (HMIM). G–H. E. longitarsis Peck, 1979, Chekab Valley, Iran (JSA). Scale bars = 0.5 mm.

Fig. 18. Epandrium, cercus and surstylus, lateral view. A. Eumerus atricolorus Gilasian & van Steenis sp. nov., holotype (HMIM). B. E. brevipilosus Gilasian & van Steenis sp. nov., holotype (HMIM). C. E. chekabicus Gilasian & van Steenis sp. nov., holotype (HMIM). D. E. coeruleus (Becker, 1913), Chekab Valley, Iran (HMIM). E. E. ovoformus Gilasian & van Steenis sp. nov., holotype (HMIM). F. E. richteri Stackelberg, 1960, Lar, Iran (HMIM). Scale bars = 0.1 mm.

Fig. 20. Right surstylus, dorsal view. A. Eumerus atricolorus Gilasian & van Steenis sp. nov., holotype (HMIM). B. E. brevipilosus Gilasian & van Steenis sp. nov., holotype (HMIM). C. E. chekabicus Gilasian & van Steenis. sp. nov., holotype (HMIM). D. E. coeruleus (Becker, 1913), Chekab Valley, Iran (HMIM). E. E. ovoformus Gilasian & van Steenis sp. nov., holotype (HMIM). F. E. richteri Stackelberg, 1960, Lar, Iran (HMIM). Scale bars = 0.1 mm.

Fig. 22. Hypandrium, lateral view. A. Eumerus atricolorus Gilasian & van Steenis sp. nov., holotype (HMIM). B. E. brevipilosus Gilasian & van Steenis sp. nov., holotype (HMIM). C. E. chekabicus Gilasian & van Steenis sp. nov., holotype (HMIM). D. E. coeruleus (Becker, 1913), Chekab Valley, Iran (HMIM). E. E. ovoformus Gilasian & van Steenis sp. nov., holotype (HMIM). F. E. richteri Stackelberg, 1960, Lar, Iran (HMIM). Scale bars = 0.1 mm.