Scrapter acanthophorus Davies, 2005

Kuhlmann, Michael, 2014, Revision of the euryglossiform species of the Afrotropical bee genus Scrapter Lepeletier & Serville, 1828 (Hymenoptera: Apoidea: Colletidae), European Journal of Taxonomy 95, pp. 1-69 : 4-7

publication ID

https://doi.org/ 10.5852/ejt.2014.95

publication LSID

lsid:zoobank.org:pub:BE14FE18-E9AB-4C5A-B260-BD9C54464A2A

DOI

https://doi.org/10.5281/zenodo.3861161

persistent identifier

https://treatment.plazi.org/id/3E519972-9F02-2700-FD9D-81D3FE0EF85B

treatment provided by

Valdenar

scientific name

Scrapter acanthophorus Davies, 2005
status

 

Scrapter acanthophorus Davies, 2005 View in CoL

Figs 1–2 View Fig View Fig

Scrapter acanthophorus Davies, 2005: 153–155 View in CoL View Cited Treatment , figs 4–8, holotype ♂ (type locality: Knersvlakte, 30 km north of Vanrhynsdorp, South Africa) (SANC).

Diagnosis

The female of S. acanthophorus is here described for the first time. It can be separated from other species of this group by the combination of the following characters: clypeus distinctly convex ( Fig. 1 View Fig C–D), foretibia dominantly blackish-brown, stigma brown, apical margins of metasomal terga broadly brownish translucent, terga between punctures smooth and shiny ( Fig. 1B View Fig ). The male is characterized by an unmodified antenna, hind tibia apically broadened inside forming a spine ( Fig. 2E View Fig ), coarsely but more sparsely punctate scutum and metasomal terga ( Fig. 2C View Fig ) and the form of S7 ( Fig. 2D View Fig ).

Material examined (25 specimens)

SOUTH AFRICA: 1 ♀,W. Cape, Knersvlakte, Sukkulent Karoo, 40 km N of Vanrhynsdorp, Farm Kalkgat, 140 m, 31°07'04" S, 18°55'18" E, 10 Sep. 2003, KT (RCMK); 1 ♀, W. Cape, Knersvlakte, Sukkulent Karoo, 30 km N of Vanrhynsdorp, 146 m, 31°22'23" S, 18°42'37" E, 22 Aug. 2003, KT (RCMK); 7 ♀♀, 2 ♂♂, idem, 6 Sep. 2003, KT (RCMK); 2 ♀♀, idem, 11 Sep. 2003, KT (RCMK); 11 ♀♀, 1 ♂, idem, 5–6 Sep. 2003, KT (RCMK 6 ♀♀, 1 ♂, NHML 5 ♀♀).

Description

Female

BODY LENGTH. 6.0– 6.5 mm.

HEAD. Head wider than long. Integument black except part of mandibles dark reddish-brown. Face sparsely covered with long, greyish, erect hair ( Fig. 1C View Fig ). Clypeus strongly convex with coarse punctation, apically sparse (i = 2–3 d), basally dense (i = 0.5–1 d); surface between punctures apically smooth and shiny, basally superficially shagreened and slightly matt ( Fig. 1 View Fig C–D). Malar area medially narrow, almost linear. Antenna dorsally blackish-brown, ventrally yellowish-brown.

MESOSOMA. Integument black. Mesoscutal disc between punctures superficially shagreened but shiny; disc densely (i = 0.5–1.0 d) and coarsely punctate ( Fig. 1 View Fig E–F). Metanotum slightly shorter than basal area of propodeum, apically with narrow carinate depression ( Fig. 1F View Fig ). Propodeum basally finely but

broadly carinate ( Fig. 1F View Fig ). Mesoscutum, scutellum, metanotum, mesepisternum and propodeum sparsely covered with short, greyish, erect hair ( Fig. 1A View Fig ).

WINGS. Slightly yellowish-brown; wing venation and stigma brown.

LEGS. Integument black to dark reddish-brown; fore and mid tibia basally with small yellowish spot. Vestiture greyish-white, scopa greyish-white.

METASOMA. Integument black, apical margins of terga broadly translucent yellowish to reddish-brown ( Fig. 1B View Fig ). Discs of T1 and T2 without hair, laterally sparsely covered with long erect greyish-white hair; following terga with increasingly more and longer hair; T3–T4 basally with a very narrow and sparse band of very fine, short, erect hair; apical tergal hair bands missing on all terga ( Fig. 1B View Fig ). Prepygidial and pygidial fimbriae greyish-brown. T1 densely (i = 1 d) but finely punctate, between punctures polished and shiny; T2–T4 shiny, with dense, fine, superficial punctation; T2–T4 with polished broad apical tergal depression ( Fig. 1B View Fig ).

Male

BODY LENGTH. 5.2–6.0 mm.

HEAD. Head slightly wider than long. Integument black, except mandible partly dark reddish-brown. Face densely covered with long, greyish-white, erect hair. Malar area medially narrow, almost linear. Antenna dorsally dark brown, ventrally yellowish-brown ( Fig. 2A View Fig ).

MESOSOMA. Integument black. Mesoscutal disc between punctures superficially shagreened but shiny; disc densely (i = 0.5–1.0 d) and coarsely punctate. Mesoscutum, scutellum, metanotum, mesepisternum and propodeum covered with long, greyish, erect hair.

WINGS. Slightly yellowish-brown; wing venation and stigma brown.

LEGS. Integument black, fore tarsi and inner side of fore tibia yellow, base of mid tibia with small yellow spot ( Fig. 2A View Fig ). Hind tibia inside apically broadened, with a spine; hind basitarsus medially broadened ( Fig. 2E View Fig ). Vestiture greyish-white.

METASOMA. Integument black, apical margins of terga broadly translucent yellowish to reddish-brown ( Fig. 2C View Fig ). Discs of T1–T3 without hair, laterally sparsely covered with short, erect greyish-white hair; following terga with increasingly more and longer hair; T2–T4 basally with a very narrow and sparse band of very fine, short, erect hair; apical tergal hair bands missing on all terga ( Fig. 2C View Fig ). T1 and following terga densely (i ˂ 0.5–1 d) but finely punctate, between punctures polished or superficially sculptured, shiny to slightly matt; terga with broad, polished to superficially sculptured but shiny apical tergal depression ( Fig. 2C View Fig ). S3 and particularly S4–S5 with long apical hair fringes.

TERMINALIA. Genitalia ( Fig. 2B View Fig ), S7 ( Fig. 2D View Fig ) and terminal plate of S8 ( Fig. 2F View Fig ) as illustrated.

Distribution

The species is only known from the Knersvlakte, a semi-desert plane in southern Namaqualand.

Floral hosts

Unknown.

Seasonal activity

August–September.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Colletidae

Genus

Scrapter

Loc

Scrapter acanthophorus Davies, 2005

Kuhlmann, Michael 2014
2014
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF