Scrapter convexoides, Mack & Kuhlmann, 2023

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 : 20-22

Scrapter convexoides sp. nov.

urn:lsid:zoobank.org:act:C5906DDB-F342-4622-A86D-13D30A94463F

Figs 13–14

Diagnosis

The male of S. convexoides sp. nov. can be separated from that of all other species of this group by the following character combination: dense (i = 0.3 d) punctation of discs of T1–T4 ( Fig. 13D ); dense (i = 0.3 d) punctation on disc of T2 covers more than half of the tergum ( Fig. 14A ); each tergum curved from anterior to posterior ( Fig. 13A ) and form of S7 ( Fig. 14C ). The female is unknown.

Etymology

The name refers to the conspicuously (in lateral view) convex metasomal terga of the male.

Type material (3 specimens)

Holotype

SOUTH AFRICA • ♂; Keiski Mts , 3 km E of Farm M’Vera, shale ; 31°45′29″ S, 19°54′13″ E; 1190 m a.s.l.; 13 Sep. 2016; MK leg.; SAMC.

Paratypes

SOUTH AFRICA • 1 ♂; same collection data as for holotype; 15 Sep. 2016; MK leg.; RCMK • 1 ♂; Roggeveld Mts , 2 km SE of Farm Allemansdam, burnt area ; 31°49′32″ S, 19°59′55″ E; 1290 m a.s.l.; 29 Aug. 2018; MK leg.; RCMK .

Description

Female

Unknown.

Male

BODY LENGTH. 7.4–8.2 mm.

HEAD. Slightly wider than long. Integument black, mandibles dark brownish to reddish. Face densely covered with long, white, erect hair. Ocelli in line with posterior margin of compound eyes. Malar area medially narrow, slightly curved. Antennal flagella ventrally yellow, dorsally black.

MESOSOMA. Integument black. Scutum finely and densely (i = 0.3–1.5 d) punctate; surface between punctures smooth and shiny ( Fig. 13B ). Propodeum completely rugulose-areolate ( Fig. 13C ). Scutum, scutellum, metanotum, mesepisternum and propodeum sparsely covered with long, greyish, erect hair.

WINGS. Yellowish-brown, stigma and wing venation brownish ( Fig. 13A ).

LEGS. Integument brownish, fore and mid tibia with yellow spot. Vestiture greyish-white ( Fig. 13A ).

METASOMA. Integument brownish-black, marginal zone yellowish-brown. Each tergum curved from anterior to posterior ( Fig. 13A ). Disc of T1 without hair ( Fig. 14A ), T2–T4 basally greyish, dense, short, erect hair band, covering about half of the terga. T3–T4 anterior of premarginal line with a hair band of short, erect, greyish hair. Punctation on discs of T2–T4 basally dense (i = 0.3 d) ( Fig. 13D ); dense (i = 0.3 d) punctation on disc of T2 covers more than half of the tergum; apical half of terga sparsely punctate to impunctate ( Fig. 14A ). T2–T4 anterior of premarginal line with row of points.

TERMINALIA. Genitalia ( Fig. 14B ), S7 ( Fig. 14C ) and terminal plate of S8 ( Fig. 14D ) as illustrated.

Distribution

Only known from the type locality (Keiski Mts) south of Calvinia.

Floral hosts

On unidentified Asteraceae .

Seasonal activity

September.

Figures

Fig. 13. Scrapter convexoides sp. nov., paratype, ♂ (RCMK). A. Lateral view. B. Scutum and scutellum (dorsal view). C. Metanotum and propodeum (dorsal view). D. Metasoma (dorsal view).

Fig. 14. Scrapter convexoides sp. nov., paratype, ♂ (RCMK). A. Terga 1–2 (dorsal view). B. Genitalia (dorsal view). C. Sternum 7. D. Sternum 8.