Onthophagus semicornis

Ziani, Stefano, 2011, A new Iranian Onthophagus species belonging to the O. semicornis group (Coleoptera: Scarabaeidae: Onthophagini), Zootaxa 2907, pp. 47-50 : 50

publication ID

https://doi.org/ 10.5281/zenodo.277769

DOI

https://doi.org/10.5281/zenodo.6193256

persistent identifier

https://treatment.plazi.org/id/03DC8232-D207-FFD7-49F6-FF322FD532B2

treatment provided by

Plazi

scientific name

Onthophagus semicornis
status

 

Key to the species in the O. semicornis View in CoL group modified from Ziani & Gudenzi (2007)

1. Clypeal margin more-or-less shallowly emarginate medially; pronotal punctures on disc separated by 0.5–2.0 diameters .............................................................................................................................................................................. 2

-. Clypeal margin arcuately excised medially; pronotal punctures on disc separated by 2–4 diameters. Kazakhstan, Uzbekistan, Kyrgyzstan............................................................................................................ O. silus Balthasar, 1960 View in CoL

2. Pronotum with two anteromedian tubercles, tubercles distinctly separated................................................................ 3

-. Pronotum with an anteromedian prominence, prominence sometimes appearing bilobate ......................................... 5

3. Pronotal punctures simple, large, umbilicate on disc. Afghanistan............................. O. nurestanicus Kabakov, 1982 View in CoL

-. Pronotal punctures with a small granule at anterior margin ........................................................................................ 4

4. Superior edge of occipital carina straight in dorsal view, with no trace of lateral horns; occipital carina broader basally than the clypeofrontal carina. Turkmenistan........................................................ O.rufimanus Kabakov, 1982 View in CoL

-. Superior edge of occipital carina sinuate in dorsal view, weakly dentate at middle and/or with a lateral horn more-orless erect on each side; occipital carina basally at least as broad as the clypeofrontal carina. Eastern Russia, northern and central China, Mongolia, Korea, Japan................................................................. O. olsoufieffi Boucomont, 1924 View in CoL

5. Pronotum doubly sinuate laterally; occipital carina with a high, slender, bifurcate horn; anteromedian pronotal prominence slender, prolonged to top of occipital horn. South Korea. .................................. O. koryoensis Kim, 1985 View in CoL

-. Sides of pronotum only distinctly sinuate behind anterior angles ............................................................................... 6

6. Occipital carina with an erect, terminally narrow crest; base of carina distinctly not extending from side to side of head ............................................................................................................................................................................... 7

-. Occipital carina with a simple, more-or-less erect lamina; carina base extended, or nearly extended, from side to side of head.......................................................................................................................................................................... 8

7. Anteromedian pronotal prominence broad, transverse, more than twice as wide as long, only slightly more projecting forward than the anterolateral tubercles ( Fig. 8 View FIGURES 7 – 10 ). Dorsal surface shiny. Central and southern Europe; Turkmenistan, Kazakhstan, Uzbekistan, Mongolia........................................................................ O. semicornis (Panzer, 1798) View in CoL

-. Anteromedian pronotal prominence less than twice wider than long, clearly more projecting forward than anterolateral tubercles ( Fig. 7 View FIGURES 7 – 10 ). Dorsal surface dull. Northeastern Iran................................................................ O. samai View in CoL n. sp.

8. Occipital carina erected in a rectangular lamina with vertical sides, straight in dorsal view, extending at base to inner edge of eyes ( Fig. 9 View FIGURES 7 – 10 ). Greece, Bulgaria........................................................................ O. eulaminicornis Pittino, 2006 View in CoL

-. Occipital carina weakly elevated, sometimes raised at edges, sinuate in dorsal view, distinctly bent back laterally, clearly twisted over each lateral extremity and visibly turning out and backwards, extending at base almost to outer edge of eyes ( Fig. 10 View FIGURES 7 – 10 ). Turkey, Caucasus, southern European Russia; northwestern Iran............................................. ................................................................................................................................... O. sacharovskii Olsoufieff, 1918 View in CoL

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Scarabaeidae

Genus

Onthophagus

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF