Pectoctenus bryanti Lepesme, 1948

Pectoctenus bryanti Lepesme, 1948 View in CoL : HOLOTYPE ♂ (BMNH). ZIMBABWE

Harare Province. Labels: “ Type ” [red circle] || “Col light | Salisbury [= Harare] | 12.10.[19]09 | Ac. No 1950” || “45” || “43” || “23” || “Pres. by | Imp.Inst.Ent. | B.M.1947-434” || “Pectotenus | Bryanti | mihi | TYPE | P.Lepesmedet.”||“[QRcode]|NHMUK013310003”( Fig.1b).

Other material examined

SOUTH AFRICA

Eastern Cape Province

- 1 ♂ Transkei , Port St Johns, Silaka, 31°33’S 29°30’E, 23.xi.1987, S Endrödy-Younga ( TMSA) GoogleMaps .

Northern Cape Province

- 1 ♀ PK le Roux Dam [Vanderkloof Dam], [30°01’S 24°43’E], 19– 20.x.1970, Snyman & Jones ( TMSA) GoogleMaps .

Gauteng

- 1 ♂ Pretoria, Roodeplaat VOPI [Vegetable & Ornamental Plant Institute], 25°35’S 28°22’E, 06.xi.2001, W Breytenbach ( SANC) GoogleMaps .

- 1 ♂ Pretoria, 25°35’S 28°22’E, xii.1972, H Mayer;? Zamium bicolor , det. P Téocchi, 1983 ( SANC) GoogleMaps .

- 1 ♂ Pretoria, N.A. 6, [25°36’S 28°21’E], v.1958, A.R. I. [Agricultural Research Institute] Pretoria;? Zamium bicolor , det. P Téocchi, 1983 ( SANC) GoogleMaps .

- 1 ♀ Pretoria N [orth], [25°40’S 28°10’E], 27.x.1943, G van Son ( TMSA) GoogleMaps .

- 1 ♂ Pretoria, [25°35’S 28°22’E], 25.x.1976, W Haacke ( TMSA) GoogleMaps .

KwaZulu-Natal

- 1 ♂ Mkuze [uMkhuze Game Reserve], 27°39’S 32°15’E, 10.xi.1981, PE Reavell ( SANC) GoogleMaps .

- 1 ♂ Dukuduku Forest , [28°22’S 32°20’E], 20-21.xi.1956, Van Son & Martin ( TMSA) GoogleMaps .

- 1 ♀ Midlands, Karkloof [Nature Reserve], 29°18’S 30°13’E, 13.xii.1989, S Endrödy-Younga ( TMSA) GoogleMaps .

- 1 ♂ Durban, [29°51’S 31°01’E], 16.xi.2008, GF Leigh ( TMSA) GoogleMaps .

Limpopo Province

- 1 ♂ Meletse Private Game Reserve , near Rooiberg, 24°38’S 27°39’E, 01-02.xii.2014, R Müller ( TMSA) GoogleMaps .

- 1 ♂ Mogol Nature Reserve , Ellisras [= Lephalale] district, 23°58’S [recte 23°18’S] 27°45’E, 19-23.xi.1979, SJ van Tonder ( SANC) GoogleMaps .

- 1 ♂ Punda Milia [= Punda Maria], NKW [Kruger National Park], [22°41’S 31°01’E], 11.xi.1969, T. W.D. [TW Drinkwater]; Alocerus bicolor ,?det. MC Ferreira ( SANC) GoogleMaps .

Mpumalanga

- 1 ♀ Luipershoek Farm, near Roossenekal, 25°07’S 28°50’E, 22.xi. 1989, LG le Roux ( SANC) GoogleMaps .

- 1 ♂ 1 ♀ Presidentsrus, 25°45’S 29°19’E, 17.xi.2018, MD Bate, JM Bate ( SANC) GoogleMaps .

North West Province

- 1 ♂ Rustenburg, [25°40’S 27°15’E], iii.1965, J vd M;? Zamium bicolor , det. P Téocchi, 1983 ( SANC) GoogleMaps .

- 1 ♂ Saartjiesnek, [25°45’S 27°56’E], xii.1983, E Holm ( TMSA) GoogleMaps .

BOTSWANA

Central District

- 1 ♂ Serowe Farmer’s Brigade, 22°25’S 26°44’E, 08.x.1988, P Forchhammer ( SANC) GoogleMaps .

ZIMBABWE

Mashonaland West

- 1 ♀ 20 km W of Ngezi R[ecreational] P[ark], [18°36’S 30°18’E], 30.xi–02.xii.1998, A Kudrna Jr., ex Delahaye coll. ( SANC) GoogleMaps .

Harare Province

- 1 ♀ Wingate [assumed golf course, Harare], [17°43’S 31°04’E], 16.x.1971, Duke ( TMSA) GoogleMaps .

Mashonaland East

- 1 ♂ Marandellas [= Marondera], [18°11’S 31°32’E], xii.1965, Duke ( TMSA) GoogleMaps .

Remarks. – In our opinion, Ferreira (1954: 367) correctly indicated that Z. bicolor could not continue to be allocated in Zamium Pascoe 1864 , the genus where it was originally placed, based on the following morphological characteristics: “last joint of the palpi acuminate at the apex, antennae pectinate, starting from the third joint, eyes very big, antennal tubercles not chamfered” ( Ferreira, 1954). These morphological characteristics together with the observed obtuse posterior angles of the pronotum conform to the characteristics of the genus Pectoctenus , rather than to the genus Alocerus as proposed by Ferreira (1954). Mulsant (1862) proposed the genus Alocerus for A. fulvus Mulsant, 1862 (currently, a junior synonym of A. moesiacus (Frivaldszky, 1837)) , Mediterranean species (Southern Europe and Northern Africa) ( Sama, 1987; Verdugo Páez & Coello, 2003; Trócoli, 2018). The genus Alocerus is well defined by its habitus and especially by the short antennae in the male, with the pedicel almost equal to half the length of antennomere III, and the antero-external angles of antennomeres V–X toothed; the pronotum wider than long, widest at three-sevenths of its length measured from the base, with posterior angles almost directed outwards in the form of a small tooth ( Mulsant, 1862).

The characteristics and distribution mentioned above differentiate Alocerus from the related genus Pectoctenus Fairmaire, 1896 , which was proposed for P. scalabrii Fairmaire, 1896 , a Madagascan and sub-Saharan species ( Lepesme, 1948; Adlbauer, 2018). In Pectoctenus , the male antennae are short and thickened, the pedicel is short, the antero-external angles of antennomeres III–X acutely serrate ( Fairmaire, 1896); and the pronotum is basely depressed, with the posterior angles obtuse.

The southern African distribution of Z. bicolor further suggests the placement in the genus Pectoctenus . As such, we propose Z. bicolor to be transferred to the genus Pectoctenus .

We examined the type specimens of Zamium bicolor Distant, 1898 and Pectoctenus bryanti Lepesme, 1948 . They show no morphological differences which leads us to treat them as synonyms. Pectoctenus bicolor is thus a senior subjective synonym of Pectoctenus bryanti .

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Based on the detailed description and figure of Nannoprionus insignis Aurivillius, 1907 , it is evident that this species may also be a member of the genus Pectoctenus , but unfortunately the type specimen could not be located for confirmation.

Distribution. – Zimbabwe, Botswana, Namibia, South Africa: Eastern Cape Province, Gauteng, Kwazulu-Natal, Limpopo, Mpumalanga, North West Province, Northern Cape Province.

Subfamily Cerambycinae Latreille, 1802