Madrasostes depressum Paulian, 1992

Alberto Ballerio & Munetoshi Maruyama, 2010, The Ceratocanthinae of Ulu Gombak: high species richness at a single site, with descriptions of three new species and an annotated checklist of the Ceratocanthinae of Western Malaysia and Singapore (Coleoptera, Scarabaeoidea, Hybosoridae), Zookeys 34, pp. 77-104 : 85

Madrasostes depressum Paulian, 1992 ( Fig. 2 A)

Known distribution: Indonesia (Sumatra) (Paulian, 1992).

Remarks. First record for West Malaysia (Selangor). This species has two distinctive paired thick sclerites in the internal sac of aedeagus. The shape of these sclerites in the Ulu Gombak material is slightly different from the shape of the sclerites of the holotype, however, due also to the circumstance that the Sumatran population is known by the type only, we were unable to find further differences that could allow a taxonomic separation of the Sumatran populations from Peninsular Malaysian specimens.

Madrasostes malayanum Paulian, 1979 ( Fig. 2 E)

Known distribution: West Malaysia (Pahang).

Remarks. First record for Selangor. This species was known only by its type series, which consists only on females. The overall morphology suggests a close similarity to Madrasostes parcepunctatum Paulian, 1989 from Borneo (Sabah).