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Riana
Member Purpuricenus

South Africa
155 Posts

Posted - 01/12/2016 :  14:06:39  Show Profile  Email Poster  Reply with Quote
Prosopocera (Alphitopola) capensis Breuning, 1936 vs Prosopocera (Alphitopola) trimaculata Breuning, 1936
After translating the descriptions of both species (BREUNING S., 1936. Études sur les Lamiaires (Coléop. Cerambycidæ). Troisième Tribu : Prosopocerini Thomson. Novitates Entomologicæ, 3ème supplément (21-29): 157-230, figs 269-371.) the differences seem very slight to me. Are these two species synonyms or am I just missing something in my ignorance

Prosopocera (Alphitopola) capensis Breuning 1936 (translated)

Elongated stature; The frons provided with a small horn in the male. The antennae a quarter (female) or half (male) longer than the body; In the male, the third, fourth and fifth antennae segments (except the apical part) and the basal half of the sixth segment slightly enlarged; Antennae tubers of medium height. The lower lobes of the eyes as long as broad, as long as the cheek. The pronotum provided with a minimal lateral spine, sometimes only indicated by a black nipple; The transverse furrows quite deep, the elytra very elongated, parallel and coarsely punctated; Punctures finer on the apical half.
Reddish brown, covered with a fine yellowish-brown pubescence; A white elongated oval spot on the middle of the pronotum. Each elytron decorated with three white maculae; A half-round at the base between the suture and the humus callus, an elongated rhomboidal on the disc a little before the middle, and a elongated triangular shape on the disc at the apical third; The first and second with a reddish brown nucleus. The underside of the body covered with a fine greyish-brown pubescence; The legs and antennae of a yellowish brown pubescence. Length: 14 mm, ½ to 17 mm. Width 4 mm. ½ to 6 mm.

Prosopocera (Alphitopola) trimaculata Breuning, 1936 (translated)

Very elongated stature; The frons provided with a small horn (male) and finely granulated on its lateral parts. Antennae almost twice as long as the body (male); The third, the fourth and the fifth segment, and the basilar half of the sixth slightly thickened; The antennal tubercles close and elevated. The lower lobes of the eyes are as long as broad, a little shorter than the cheeks. The pronotum adorned with a small black spot instead of the lateral spine; The anterior transverse furrow quite profound, slightly sinuous. The elytra are very elongated, parallel, rather coarsely punctuated after the shoulders, and then finely punctated; punctures touching in the apical third.
Reddish brown, covered with a light brown pubescence; In the middle of the pronotum a white spot; On the inner side of the black lateral spot (located in place of the lateral thorn), a small whitish spot. On each elytron, a whitish triangular spot in the middle of the base, surrounding a small elongated black spot, a large pre-median triangular disc spot, interrupted in the middle by a tiny blackish spot, and a smaller white triangular disc spot at the beginning of the apical quarter; A round black on the lateral edge shortly after the shoulder; The disk of the elytra, between the first and the second white maculae and between the second and the third, is covered with a darker brownish reddish pubescence; The metasternum and posterior hips are covered for the most part with whitish pubescence. Length: 18 mm. Width 5 mm. This species is closest to P. paykulli.

Capitaine
Scientific Collaborator

France
1164 Posts

Posted - 01/12/2016 :  16:16:07  Show Profile  Email Poster  Reply with Quote
While reading the description I can note many differences between the two species (Antennal lenght, cheeks/eyes, pattern, etc...)

Claude

Edited by - Capitaine on 01/12/2016 16:17:46
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Xavier
Scientific Collaborator

France
8073 Posts

Posted - 09/06/2017 :  18:56:57  Show Profile  Email Poster  Reply with Quote
Some new holotype pictures of Prosopocera sp. are available here
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