Scrapter crassipunctatus, 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 : 26-30

Scrapter crassipunctatus sp. nov.

urn:lsid:zoobank.org:act:7C308682-3343-46BC-8F57-4658B8C7CE62

Figs 18–20

Diagnosis

The female of S. crassipunctatus sp. nov. can be separated from that of all other species of this group by the following character combination: T3 anterior of premarginal line with a row of points ( Fig. 18E–F); punctation on discs of T1–T4 mostly dense (i<0,5–1 d), disc of T3 often basally more densely punctate than apically ( Fig. 31E–F); punctation of scutum relatively dense (I <1.5 d) ( Fig. 18C); propodeum with carinae, smooth stripes laterally possible ( Fig. 31D). The male is characterized by punctation of meso- and metasoma completely fine and very dense (i = 0.1 d) ( Fig. 19B–D), no stripe on T3 parallel to posterior margin without punctation ( Fig. 19D) and form of S7 ( Fig. 20C).

Etymology

The species is named after the unusual very dense punctation of meso- and metasoma in both sexes.

Type material (30 specimens)

Holotype

SOUTH AFRICA • ♀; W Cape, Rondeberg ; 32°00′06″ S, 18°46′21″ E; 180 m a.s.l.; 21 Sep. 2011; CE leg.; SANC.

Paratypes

SOUTH AFRICA • 2 ♀♀, 2 ♂♂; 12 km NW of Nieuwoudtville, Farm Avontuur, Fynbos ; 31°16′18″ S, 19°02′55″ E; 770 m a.s.l.; 25 Aug. 2010; MK leg.; RCMK • 1 ♂; same collection data as for preceding; 16 Aug. 2011; MK leg.; RCMK • 3 ♀♀; 20 km S of Nieuwoudtville, Farm Papkuilsfontein, Fynbos ; 31°33′16″ S, 19°08′31″ E; 680 m a.s.l.; 20 Sep. 2014; MK leg.; RCMK • 1 ♀; same collection data as for preceding; NHML • 1 ♀; same collection data as for preceding; 7 Sep. 2007; MK leg.; RCMK • 1 ♀; same collection data as for preceding; 9 Sep. 2007; KT leg.; RCMK • 1 ♀: Lamberts Bay, Strandveld, sand ; 32°06′19″ S, 18°18′16″ E; 5 m a.s.l.; 7 Sep. 2017; MK leg.; RCMK • 7 ♀♀; N Cape, 15 km NW of Nieuwoudtville, Farm Engelsepunt, Fynbos ; 31°14′30″ S, 18°59′13″ E; 830 m a.s.l.; 29 Sep. 2006; MK leg.; RCMK • 1 ♀; same collection data as for preceding; NHML • 2 ♀♀; same collection data as for preceding; 10 Oct. 2006; MK leg.; RCMK • 2 ♂♂; N Cape, Fynbos, 15 km NW of Nieuwoudtville, Farm Engelsepunt ; 31°14′31″ S, 18°59′08″ E; 830 m a.s.l.; 23 Jul. 2003; KT leg.; RCMK • 2 ♀♀; same collection data as for preceding; 24 Sep. 2003; KT leg.; RCMK • 1 ♀; same collection data as for preceding; 6 Oct. 2003; KT leg.; RCMK • 1 ♀; same collection data as for preceding; 28 Aug. 2003; KT leg.; RCMK • 1 ♂; same collection data as for preceding; 22 Jul. 2003; KT leg.; RCMK • 1 ♀; Roggeveld Mts , 2 km S of Farm Perdekloof, river, dolerite ; 31°47′35″, 19°58′16″ E; 1220 m a.s.l.; 2 Sep. 2017; MK leg.; RCMK • 1 ♀; 10–20 km E Lamberts Bay ; 32°08′ S, 18°28′ E; 180 m a.s.l.; 3 Oct. 1990; CE leg.; SANC .

Description

Female

BODY LENGTH. 7.2–8 mm.

HEAD. Slightly wider than long. Integument black, 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.

CLYPEUS. Medially with longitudinal depression; coarse punctation, apically sparse (i = 2–4 d), laterally dense (i = 1 d); surface between punctures smooth and shiny ( Fig. 18B). Malar area medially narrow, slightly curved. Antennal flagella ventrally yellow, dorsally black. Supraclypeal area at upper margin distinctly emarginated and edges slightly extended.

MESOSOMA. Integument black, pronotal lobe dark brown to black, marginal zones yellowish-brown shimmering. Scutum finely and irregularly punctate (I <1.5 d); surface between punctures smooth and shiny ( Fig. 18C). Metanotum about half as long as scutellum. Propodeum anterolaterally longitudinally, broadly, coarsely carinate, posterior half with finer transverse carinae, laterally narrow coriaceous stripe possible, medially rugulose-areolate ( Fig. 18D). Scutum, scutellum, metanotum, mesepisternum and propodeum sparsely covered with middle long, brownish to greyish, erect hair.

WINGS. Yellowish-brown, stigma and wing venation dark brownish ( Fig. 18A).

LEGS. Integument brownish-black, fore tibia with yellow spot. Vestiture greyish-white, scopa greyish to brownish, partly black ( Fig. 18A).

METASOMA. Integument black, T1–T2 yellow, marginal zones yellowish-brown shimmering. Basal half of T2–T3 with hair patches of greyish-white, erect, sparse, short hair, broader towards posterior; T3 anterior of premarginal line at least laterally row of hairs; T4 completely haired, basally more shortly and more densely than apically; prepygidial and pygidial fimbriae dark brownish to black ( Fig. 18E–F). Disc of T1 shallowly, coarsely, and densely (i = 1–2 d) punctate; discs of T2–T4 densely (i = 0.5–1 d) and shallowly punctate; punctation on discs of T2–T3 often basally more densely than apically; T3 anterior of premarginal line with row of points; surface between punctures smooth and shiny ( Fig. 18E–F).

Male

BODY LENGTH. 7.2–7.5 mm.

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

MESOSOMA. Integument black. Scutum completely densely (i = 0.1 d) punctate ( Fig. 19B). Basal half of propodeum laterally coarsely carinate, medially and posterior half rugulose-areolate ( Fig. 19C). Scutum, scutellum, metanotum, mesepisternum and propodeum sparsely covered with long, brownish to greyish, erect hair.

WINGS. Yellowish-brown, stigma and wing venation dark brownish ( Fig. 19A).

LEGS. Integument brownish-black, fore and mid tibia with yellow spot. Vestiture greyish-white ( Fig. 19A).

METASOMA. Integument brownish, T1–T2 partly yellow, marginal zone yellowish-brown ( Fig. 20A). Disc of T1 without hair ( Fig. 20A), T2–T4 basally greyish-white, dense, short, erect hair band, covering about third of the tergum, T3 anterior of premarginal line with row of short, erect, greyish hair ( Fig. 19D). Punctation of T1–T4 completely dense (i = 0.1 d) ( Fig. 19D).

TERMINALIA. Genitalia ( Fig. 20B), S7 ( Fig. 20C) and terminal plate of S8 ( Fig. 20D) as illustrated.

Distribution

Found at numerous sites in southern Namaqualand from the coast (Lamberts Bay) to the northern extension of the Roggeveld Mts south of Calvinia.

Floral hosts

On unidentified yellow Asteraceae and yellow Senecio sp. ( Asteraceae ).

Seasonal activity

August–September.