Nomada erhardti KUHLMANN, 2023

Kuhlmann, Michael, 2023, The South African species of the bee genus Nomada SCOPOLI, 1770 (Hymenoptera, Apidae), Linzer biologische Beiträge 55 (1), pp. 155-186 : 168-169

Nomada erhardti KUHLMANN nov.sp. ( Figs 57-66 )

T y p e m a t e r i a l: (1 specimen). Holotype, ♀: South Africa: N. Cape, Nieuwoudtville, Flower Reserve East, 31°21´56´´S 19°08´52´´E, 735 m, 12.viii.2004, leg. M. Kuhlmann ( SAMC).

D i a g n o s i s: The female of N. erhardti is very similar to N. maximiliani , but can be distinguished by a pair of reddish-brown spots on the clypeus (completely black in N. maximiliani ) ( Fig. 64 ), scutum with coarser punctation and well-defined pair of reddish-brown longitudinal stripes ( Fig. 60 ) (almost invisible in N. maximiliani ). Moreover, first and second flagellar segments about equal length ( Fig. 63 ) and pygidial plate broad and finely punctate ( Fig. 66 ).

D e s c r i p t i o n

F e m a l e: Body-length: 11.6 mm (Habitus: Figs 57-58 ). Head: Head black, reddish-brown are: base of antennal scape, ventral side of antennal flagellum (except first flagellar segment orange), pair of reddish-brown spots on the lower half of the clypeus, malar area, mandible partly reddish-brown ( Fig. 59 ), lateral margin of labrum ( Fig. 65 ). Head slightly broader than long. First and second flagellar segments about the same length (ratio 1: 1) ( Fig. 63 ) and longer than wide. Supraclypleal area with longitudinal keel raised with highest point between the base of the antenna. Clypeus in lateral view slightly asymmetrically convex, with the highest part in the upper half and flattened in the lower part, punctation fine and dense, between punctures smooth and shiny ( Fig. 64 ). Labrum transversely oval in shape, medially with three to four small black teeth, surface finely punctate, smooth and shiny between punctures ( Fig. 65 ). Mesosoma: Integument black, reddish-brown are: pronotal lobe, pair of longitudinal stripes on the scutum, tegula, axilla ( Fig. 60 ), scutellum with pair of lateral spots on anterior swelling and lower posterior margin, metanotum with broad traversal oval spot ( Fig. 61 ) and horseshoe-shaped maculation on the mesepisternum. Scutum and propodeum finely punctate, shiny and smooth between punctures; scutellum and metanotum with slightly finer punctation, matt ( Fig. 60 ); scutellum medially depressed and laterally with distinct swelling ( Fig. 61 ). Wings: Wing venation reddish-brown at the base, apically brownish to black, membrane hyaline brown. Legs: Front leg predominantly reddish-brown with black and brown maculations, tibia brownish-black with reddish-brown maculation, mid and hind legs predominantly black with reddish brown maculations ( Fig. 58 ). Hind tibia apically with three bent black spines. Metasoma: Metasoma mostly black; reddish-brown are posterior two thirds of T1, all of T2, T3-4 with a narrow transverse stripe in front of the marginal zone ( Fig. 62 ); S1-2 reddish-brown, S3 black with broad reddish-brown stripe posteriorly, S4-5 black with small reddish-brown stripe posteriorly. Punctation of T1 more scattered than on following terga, punctures are about as far apart as their diameter, following terga densely punctate and matt, punctation of T2-5 successively coarser, marginal zones of T1-4 smooth and impunctate. Pseudopygidial area on T5 medially with pointed black setae, that are slightly bent upwards and directed backwards, laterally thinner pale silverish setae ( Fig. 66 ). Pygidial plate broad and flat triangular with rounded tip, finely and irregularly punctate ( Fig. 66 ).

M a l e: Unknown.

E t y m o l o g y: The species is dedicated to Hergen Erhardt, Edewecht ( Germany), who has joined me for fieldwork and supported South African bee taxonomic projects in various ways over many years.

G e n e r a l d i s t r i b u t i o n: Only known from the type locality in the vicinity of Nieuwoudtville.

H o s t: Unknown.

Figures

Figs 57-62: Nomada erhardti KUHLMANN nov.sp., ♀ (57) dorsal view; (58) lateral view; (59) head; (60) scutum; (61) propodeum; (62) metasoma.

Figs 63-66: Nomada erhardti KUHLMANN nov.sp., ♀ (63) first and second flagellar segments; (64) clypeus; (65) labrum; (66) pseudopygidial area and pygidial plate.