Scrapter luteistigma, Kuhlmann, 2014

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 : 22-25

Scrapter luteistigma sp. nov.

urn:lsid:zoobank.org:act:6CECCB95-325C-4E9D-9A17-55FEED5B269F

Figs 11–12

Diagnosis

Both the female and male of S. luteistigma sp. nov. can be separated from all other species of this group by the bright yellowish stigma ( Figs 11A , 12A ).

Etymology

Named after the unique bright yellow stigma in the forewing of both males and females.

Type material (77 specimens)

Holotype

SOUTH AFRICA: ♀, Gemsbokrivier-Pad , 4.5 km NE of Grootdrif, road side, 170 m, 31°25'54" S, 18°55'16" E, 22 Aug. 2012, MK ( SANC).

Paratypes

SOUTH AFRICA: 43 ♀♀, same data as holotype (SANC 5 ♀♀, NHML 25 ♀♀, RCMK 13 ♀♀); 1 ♀, idem, 20 Aug. 2010, MK (NHML); 2 ♀♀, 1 ♂, idem, 15 Aug. 2011, MK (NHML 2 ♀♀, RCMK 1 ♂); 1 ♀, idem, 20 Aug. 2011, MK (NHML); 1 ♂, idem, 9 Aug. 2012, MK (RCMK); 4 ♀♀, idem, 17 Aug. 2012, MK (RCMK); 15 ♀♀, idem, 4 Sep. 2012, MK (NHML 12 ♀♀, RCMK 3 ♀♀); 6 ♀♀, Knersvlakte, 5 km N of Grootdrif, 195 m, 31°26'40" S, 18°56'23" E, 21 Sep. 2007, KT (NHML 2 ♀♀, RCMK 4 ♀♀); 2 ♀♀, idem, 24 Aug. 2008, MK (NHML, RCMK).

Description

Female

BODY LENGTH. 4.5–5.2 mm.

HEAD. Head slightly wider than long. Integument black, except part of mandibles dark reddish-brown. Face sparsely covered with long, greyish, erect hair ( Fig. 11C ). Clypeus slightly convex with sparse fine and shallow punctation (i = 2–3 d); surface between punctures apically superficial and shiny, basally distinctly reticulate and matt ( Fig. 11 C–D). Malar area medially narrow, almost linear. Antenna dorsally light brown, ventrally yellowish-brown ( Fig. 11C ).

MESOSOMA. Integument black. Mesoscutal disc between punctures densely reticulate, matt; disc sparsely (i = 3–5 d) and shallowly punctate ( Fig. 11 E–F). Metanotum slightly shorter than basal area of propodeum, apically with narrow carinate depression ( Fig. 11F ). Propodeum broadly but finely carinate ( Fig. 11F ). Mesoscutum, scutellum, metanotum, mesepisternum and propodeum sparsely covered with short, greyish, erect hair ( Fig. 11A ).

WINGS. Yellowish-brown; wing venation yellowish-brown, stigma bright yellowish ( Fig. 11A ).

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 narrowly translucent yellowish to reddish-brown ( Fig. 11B ). Discs of T1–T4 without hair; apical tergal hair bands missing on all terga ( Fig. 11B ).

Prepygidial and pygidial fimbriae yellowish-brown. Terga impunctate, densely sculptured and matt; T2–T4 with indistinct, narrow apical tergal depression ( Fig. 11B ).

Male

BODY LENGTH. 4.4–4.7 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. Antennal flagellum bright yellowish-orange, medioapically broadened ( Fig. 12B ).

MESOSOMA. Integument black. Mesoscutal disc impunctate, strongly and densely sculptured, completely matt. Mesoscutum, scutellum, metanotum, mesepisternum and propodeum covered with long, greyish, erect hair ( Fig. 12A ).

WINGS. Slightly yellowish-brown; wing venation yellowish-brown, stigma bright yellow ( Fig. 12A ).

LEGS. Integument black, tarsi, tibiae and femora apically yellow, tibia on both sides with darker spots of variable size ( Fig. 12A, E ). Hind tibia basally slightly curved, apically broadened and with a dense tuft of short, white hair on the inside ( Fig. 12E ). Vestiture greyish-white.

METASOMA. Integument black, apical margins of terga narrowly translucent yellowish-brown ( Fig. 12C ). T1 medially, T2 densely and following terga successively less covered with short, appressed scale-like hair; apical tergal hair bands missing on all terga ( Fig. 12C ). Terga impunctate, densely sculptured and matt; terga with narrow apical tergal depression ( Fig. 12C ). S3–S5 without conspicuous apical hair fringes.

TERMINALIA. S7 ( Fig. 12D ) and terminal plate of S8 ( Fig. 12F ) as illustrated.

Distribution

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

Floral hosts

Aizoaceae : Galenia sarcophylla .

Seasonal activity

August–September.

Figures

Fig. 11. Scrapter luteistigma sp. nov., ♀. A. Lateral view. B. Metasoma (dorsal view). C. Head. D. Head (SEM). E. Thorax (dorsal view). F. Thorax (dorsal view, SEM). Scale bars: photos: 1 mm, SEM: 0.1 mm.

Fig. 12. Scrapter luteistigma sp. nov., ♂. A. Lateral view. B. Antenna. C. Metasoma (dorsal view). D. S7 (dorsal view, SEM). E. Hind tibia. F. S8, apical end (SEM). Scale bars: photos: 1 mm, SEM: 0.1 mm.