Scrapter pallidicinctus Cockerell, 1933

Mack, Anne & Kuhlmann, Michael, 2023, Revision of the nitidus species group of the bee genus Scrapter Lepeletier & Serville, 1828 (Hymenoptera: Apoidea), European Journal of Taxonomy 912, pp. 1-119 : 90-94

Scrapter pallidicinctus Cockerell, 1933

Figs 64–66

Scrapter pallidicincta [sic!] Cockerell, 1933: 206–208, holotype ♂ (type locality: Oudtshoorn, South Africa) (NHML), examined.

Diagnosis

The female of S. pallidicinctus can be separated from that of all other species of this group by the following character combination: scutum is coarsely and sparsely (i = 1–4 d) punctate ( Fig. 64C ); discs of T1–T4 deeply and regularly punctate ( Fig. 64E ); propodeum smooth and shiny on posterior half ( Fig. 64D ). The male is characterized by punctation on discs of T1–T4 basally dense (i = 1 d), apically sparse (i = 2–3 d) ( Fig. 65D ); propodeum completely areolate ( Fig. 65C ) and form of S7 ( Fig. 66C ).

Material examined (1 specimen)

SOUTH AFRICA • 1 ♀; Oudtshoorn ; 33°39′ S, 22°13′ E; 380 m a.s.l.; 1 Nov?; unknown leg.; NHML .

Description

Female

BODY LENGTH. 7.3 mm.

HEAD. Wider than long. Integument brownish, mandibles dark brownish to reddish. Face irregularly and sparsely covered with brownish hair, more densely around basis of antennae. Ocelli in line with posterior margin of compound eyes. Facial fovea narrow, at least 5 times as long as wide. Clypeus medially with shallow longitudinal depression; laterally punctate (i = 1–2 d), in middle sparsely punctate (i> 3 d). Surface between punctures smooth and shiny ( Fig. 64B ). Malar area medially narrow, slightly curved. Supraclypeal area triangularly elevated.

MESOSOMA. Integument dark brownish to black, pronotal lobe brownish. Scutum coarsely and irregularly punctate (i = 1–4 d), surface between punctures smooth and shiny ( Fig. 64C ). Metanotum about half as long as scutellum. Propodeum basally broadly, finely carinate, posteriorly smooth ( Fig. 64D ). Scutum, scutellum, metanotum, mesepisternum and propodeum sparsely covered with short, brownish to greyish, erect hair.

WINGS. Yellowish-brown, stigma and wing venation brownish ( Fig. 64A ).

LEGS. Integument dark brownish to black. Vestiture and scopa greyish-white ( Fig. 64A )

METASOMA. Integument dark brownish, marginal zones yellowish-brown shimmering. T3 anterior of premarginal line with row of hairs across whole width of tergum ( Fig. 64E ). T4 sparsely haired with short, greyish-yellow, erect hair. Prepygidial and pygidial fimbriae yellowish-grey ( Fig. 64E ). Discs of T1–T3 finely punctate (i ~ 2 d); surface between punctures smooth and shiny ( Fig. 64E–F ).

Male

BODY LENGTH. 9 mm.

HEAD. Slightly wider than long. Integument black, mandibles dark brownish. Face densely covered with long, white, erect hair. Malar area medially narrow, slightly curved. Antennal flagella ventrally yellow, dorsally black.

MESOSOMA. Integument black. Scutum irregularly and densely (i = 0.5–2 d) punctate; surface between punctures smooth and shiny ( Fig. 65B ). Propodeum completely areolate, matt ( Fig. 65C ). Scutum, scutellum, metanotum, mesepisternum and propodeum sparsely covered with long, brownish to greyish, erect hair.

WINGS. Yellowish-brown, stigma and wing venation brownish ( Fig. 65A ).

LEGS. Integument dark brownish, fore and mid tibia with yellow spot. Vestiture greyish-white ( Fig. 65A ).

METASOMA. Integument dark brownish, marginal zone light brownish. Disc of T1 without hair ( Fig. 66A ), T2–T4 basally greyish, dense, short, erect hair band, covering fifth of terga. T3–T4 anterior of premarginal line with row of short, erect, greyish hair ( Fig. 65D ). Disc of T1 regularly and densely (i=1–2 d) punctate ( Fig. 66A ). T2–T4 basally more densely (i = 1 d) and more finely punctate than apically (i = 2–4 d). T2–T3 anterior of premarginal line with row of points ( Fig. 65D ).

TERMINALIA. Genitalia ( Fig. 66B ), S7 ( Fig. 66C ) and terminal plate of S8 ( Fig. 66D ) as illustrated.

Distribution

Only known from the type locality Oudtshoorn.

Floral hosts

Unknown.

Seasonal activity

November.

Remarks

Eardley (1996) synonymised this species with S. opacus (Friese) .

Figures

Fig. 64. Scrapter pallidicinctus Cockerell, 1933, ♀. A. Lateral view. B. Head (dorsal view). C. Scutum and scutellum (dorsal view). D. Metanotum and propodeum (dorsal view). E. Metasoma (dorsal view). F. Terga 1–2 (dorsal view).

Fig. 65. Scrapter pallidincinctus Cockerell, 1933, ♂. A. Lateral view. B. Scutum and scutellum (dorsal view). C. Metanotum and propodeum (dorsal view). D. Metasoma (dorsal view).

Fig. 66. Scrapter pallidicinctus Cockerell, 1933, ♂. A. Terga 1–2 (dorsal view). B. Genitalia (dorsal view). C. Sternum 8. D. Sternum 7.