Nomada sp.

Kuhlmann, Michael, 2023, The South African species of the bee genus Nomada SCOPOLI, 1770 (Hymenoptera, Apidae), Linzer biologische Beiträge 55 (1), pp. 155-186 : 181-184

publication ID	https://doi.org/ 10.5281/zenodo.10788031
persistent identifier	https://treatment.plazi.org/id/03C8F03A-FFB7-B822-ACE6-FD48FE20FE8D
treatment provided by	Felipe
scientific name	Nomada sp.
status

Treatment

Unidentified male Nomada sp. ( Figs 111-122 View Figs 111-116 View Figs 117-122 )

M a t e r i a l e x a m i n e d: (1 specimen). South Africa: 1♁, Kotzesrus, Farm Rondabel, 3017DD [30°58´S 17°50´E], 29.viii.1996, leg. V.B. Whitehead, SAM-HYM-B008067 (SAMC).

This specimen is clearly different from the presumed male of N. whiteheadi . It is only described but not named because it was collected separately and cannot reliably associated with any of the females. Morphology of the labrum, namely the arcuate apical transverse ridge with medially three or four asymmetrically arranged small teeth on its upper margin ( Fig. 118 View Figs 117-122 ), suggests that it might be the unknown male of either N. erhardti nov.sp., N. maximiliani nov.sp., N. redivivoides nov.sp. or N. whiteheadi . Females of these species have a similarly structured labrum ( Figs 65 View Figs 63-66 , 75 View Figs 73-76 , 85 View Figs 83-88 , 97 View Figs 95-98 ). However, it is also possible that the male represents a new species different from the ones treated in this publication. A description is here provided to encourage and facilitate future studies.

D i a g n o s i s: The male Nomada sp. indet. is characterised by the following character combination: labrum with arcuate apical transverse ridge that medially has three or four asymmetrically arranged small teeth on its upper margin ( Fig. 118 View Figs 117-122 ), first flagellar segment longer than second (ratio 1: 0.77) ( Fig. 117 View Figs 117-122 ), scutum with a pair of two reddish-brown longitudinal stripes ( Fig. 113 View Figs 111-116 ), front tarsi with hair fringes ( Fig. 119 View Figs 117-122 ), metasoma with reddish-brown maculation ( Fig. 115 View Figs 111-116 ), pygidial plate narrow and coarsely punctate ( Fig. 116 View Figs 111-116 ), genitalia and S7 as illustrated ( Figs 120-122 View Figs 117-122 ).

D e s c r i p t i o n

M a l e: Body-length. 11.7 mm (Habitus: Fig. 111 View Figs 111-116 ). Head: Head black, reddish-brown are: lower 2/3 of antennal scape, ventral side of antennal flagellum (except first flagellar segment orange), lower margin of clypeus, malar area, mandible except tip ( Fig. 112 View Figs 111-116 ), labrum ( Fig. 118 View Figs 117-122 ). Head broader than long. First flagellar segment longer than second (ratio 1: 0.77) ( Fig. 117 View Figs 117-122 ), all flagellar segments longer than wide. Supraclypeal 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.112 View Figs 111-116 ). Labrum transversely oval in shape, apical transverse ridge medially with three to four small teeth, tooth in the middle black and longer, lateral teeth smaller and brownish translucent, labrum unevenly and finely punctate, smooth and shiny between punctation ( Fig. 118 View Figs 117-122 ). Mesosoma: Integument black, reddish-brown are: pronotal lobe, pair of longitudinal stripes on the scutum, tegula, axilla ( Fig. 113 View Figs 111-116 ), scutellum with pair of lateral spots on anterior swelling and lower posterior margin ( Fig. 114 View Figs 111-116 ), metanotum and inverted U-shaped maculation on the mesepisternum. Scutum and propodeum finely punctate, shiny and smooth between punctures; scutellum and metanotum with slightly finer punctation; scutellum medially depressed and laterally with distinct swelling. Wings: Wing venation reddish-brown at the base, apically brownish to black, membrane hyaline brown ( Fig. 111 View Figs 111-116 ). Legs: Front leg predominantly reddish-brown with black and brown maculation, mid and hind legs predominantly brown with reddish brown maculation. Hair fringes on the front tarsi ( Fig. 119 View Figs 117-122 ). Metasoma: Metasoma black, reddish-brown are: posterior half of T1, all of T2-3 except a black narrow transverse stripe on the upper margin, marginal zone of T4-T6 slightly reddish-brown ( Fig. 115 View Figs 111-116 ), posterior half of S1, all of S3, S4-6 marginal zone slightly reddish-brown. 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 T2-6 successively coarser, marginal zones of T1-6 smooth and impunctate. Pygidial plate narrow and flat triangular with rounded tip, coarsely punctate ( Fig. 116 View Figs 111-116 ). Terminalia: Genitalia ( Figs 121-122 View Figs 117-122 ) and S7 ( Fig. 120 View Figs 117-122 ) as illustrated.