Afrotropical region

New data on the rare Afrotropical scarab beetles Orphnus drumonti and Delopleurus naviauxi

 

Frolov, A. V. & Akhmetova, L. A. 2015. New data on the rare Afrotropical scarab beetles Orphnus drumonti Frolov and Delopleurus naviauxi Frolov et Cambefort (Coleoptera, Scarabaeidae, Orphninae and Scarabaeinae). Biodiversity Data Journal, 3: e5444.

The scarab beetle genera Orphnus Macleay and Delopleurus Boheman are most speciose in the Afrotropical region. However, a number of species are only known from type specimens, sometimes only from one sex. New locality records of Orphnus drumonti Frolov (Orphninae) and Delopleurus naviauxi Frolov et Cambefort (Scarabaeinae) are given. The previously unknown female of the former and male of the latter species are described.

A new species of the dung beetle genus Namakwanus from Namibia

Frolov, A.V. 2005. A new species of the dung beetle genus Namakwanus (Coleoptera, Scarabaeidae) from Namibia. In: Konstantinov, Tishechkin & Penev (Eds), Papers celebrating 80th anniversary of Prof. I.K.Lopatin. Pensoft Publishers, Sofia – Moscow, pp. 245-247.

Abstract—A second species of the genus Namakwanus Scholtz et Howden, N. streyi sp. n., is described from Namibia.

Genus Orphnus (Scarabaeidae, Orphninae)

Orphninae, Orphnus angolensis Quedenfeldt, 1884

Small to rather large beetles (length 5–25 mm). Color uniformly brown to black. Clypeus of males of most species with more or less pronounced horn having, in case of full development in some species, a species-specific shape. Shape of pronotum varies from simply convex to having 2 more or less developed longitudinal ridges and an excavation between the ridges. Similar to clypeal horns, pronotal ridges are subject to both interspecific and intraspecific allometric variability which can only be assessed if large series of beetles are examined. Elytra convex, without ridges, more or less densely punctate with rounded punctures. In some species punctures mark elytral stria on disc, but most species have only 1st (sutural) stria distinct. Anterior tibiae normally with 3 strong outer teeth. Lateral margin basad of outer teeth not crenulated. Middle and posterior legs similar in shape; posterior femora and tibiae about 1/8 longer than middle ones. Parameres of many species are simple, flattened and tapering apically, with 1 lateral tooth near apex of each paramere. In many species the paramere shape reasonably deviates from this common type and is species-specific...

Genus Goniorphnus (Scarabaeidae, Orphninae)

Orphninae, Goniorphnus felschei

Middle-sized beetles (length 9.5–11.5 mm). Color uniformly dark brown to black. Clypeus with more or less pronounced horn in males, without horn in females. Mandibles with angulate lateral margin. Pronotum with 4 tubercles in males, convex in females. Elytra convex, without ridges, punctures mark elytral stria on disc. Anterior tibiae with 3 strong outer teeth. Lateral margin basad of outer teeth not crenulated. Middle and posterior legs similar in shape; posterior femora and tibiae about 1/8 longer than middle ones. Phallobase with membranous ventral side. Except for the absence of clypeal horn and pronotal tubercles, females differ from males in having a spur on protibia. ...

Genus Hybaloides (Scarabaeidae, Orphninae)

Orphninae, Hybaloides foveolatus

Small to medium-sized beetle (length 5.3-8.7 mm) with strongly shiny body. Color dark brown to brown, upper side sometimes with bronze tint. Clypeus with short transversal carina with round tubercle in the middle. Disc of pronotum with slight but distinct impression in the middle near anterior margin. Scutellum triangular, rounded apically, about 1/12 length of elytra. Elytra convex, with feebly marked to indistinct humeral umbones. Maximum width approximately at the middle. Striae 1-4 feebly marked with rows of punctures, indistinct in most specimens. Wings reduced, about 1/2 length of elytra. Anterior tibiae with 2 strong outer teeth and a smaller one. Lateral margin basad of outer teeth not crenulated. Middle and posterior legs similar in shape; posterior femora and tibiae about 1/8 longer than middle ones. Tibiae somewhat triangular, with two apical spurs, with inner margin straight or very slightly concave and with 1 transverse keel. Longer tibial spur as long as two basal segments of tarsus. Claws 1/3 length of last tarsal segment. Femora almost impunctate, with two rows of long setae. Females are similar to males and differs in having short spur of anterior tibia, slightly smaller pronotum, less distinct impression near anterior margin of pronotum in the middle and smaller frontal tubercle...