Macroderes

Macroderes undulatus Preudhomme de Borre

Macroderes undulatus can be separated from other Macroderes species by the combination of the following characters: head with small tubercle in the middle of frontal suture; base of pronotum with large, adjoining punctures becoming sparser and smaller towards anterior margin; metasternum smooth, without distinct punctuation; elytral intervals with sparse punctures surrounded by matte areas separated by smooth elevated areas.

The range of Macroderes undulatus in unclear since most of the older specimens have locality label “Cape of Good Hope”. The only exact locality record available, “Rietpoel”, although probably originally misspelled, suggest western Cape distribution.

Macroderes namakwanus Frolov et Scholtz

Macroderes namakwanus Frolov et Scholtz, habitus

Macroderes namakwanus is very similar to M. endroedyi but can be separated from it in having the base of the pronotum with denser, regular punctures and without distinct tubercles in-between, elytral intervals less shagreened, without distinct shiny tubercles, and less curved basal part of internal sac of aedeagus.

Macroderes namakwanus is distributed mostly in the Namaqualand with one specimen collected in southern Richtersveld (South Africa).

Macroderes minutus Frolov et Scholtz

Macroderes minutus Frolov et Scholtz, habitus

This species differs from other Macroderes species in its smaller average size (7.0-9.5 mm). It is similar to M. politulus and M. nitidus in body shape and punctuation of pronotum but can be separated from the former species by evenly shiny to slightly opaque, flat elytral intervals and from the latter species in having lateral margins of pronotum not punctate. From both species it also differs in the shape of internal sac sclerite.

Macroderes minutus is known from Western Cape Sandveld and Cederberg Range (South Africa).

Macroderes nitidus Harold

Macroderes nitidus Harold, habitus

Macroderes nitidus is very similar to M. minutus and M. politulus in body shape and punctuation of pronotum but males can easily be separated from them by the peculiar shape of internal sac sclerite. From the former species it also differs in larger average size. From the latter species it also differs in having impunctate lateral border of pronotum.

The only exact locality known for this species is the Cederberg Range (Western Cape Province, South Africa).

Macroderes mutilans Kolbe

Macroderes mutilans Kolbe, habitus

Macroderes mutilans is similar to M. bias and M. fornicatus in having elytral intervals almost flat and matte, but can be separated from them in having impunctate lateral border of pronotum and different shape of internal sac  sclerite. From the former species it also differs in having elytral stria 9 widely separated from stria 10.

Macroderes mutilans is known from a few localities in the Namaqualand, South Africa.

Macroderes greeni (Kirby)

Macroderes greeni (Kirby), habitus

Macroderes greeni is similar to M. arrowi, M. foveatus sp. n. and M. cornutus sp. n. in having elytral intervals with punctures with slightly carinate margins, but can be separated from them in having pronotum regularly punctate with round punctures as opposed to being granular in the former species and punctate with very elongated punctures in the two latter species. From the two latter species it also differs in having the pronotum without a deep concavity at the base. Body length 9.8-11.8 mm, width 6.3-8.0 mm.

Macroderes greeni is known from a few localities on the south-western coast of South Africa from Saldanha Bay in the north-west to Cape Agulhas in the south-east.

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