Sphex stadelmanni stadelmanni Kohl, 1895

Dörfel, Thorleif H. & Ohl, Michael, 2022, The wasp genus Sphex in Sub-Saharan Africa (Hymenoptera: Sphecidae), European Journal of Taxonomy 796 (1), pp. 1-170 : 117-120

publication ID

https://doi.org/10.5852/ejt.2022.796.1665

publication LSID

lsid:zoobank.org:pub:76C5C9C4-C6C1-4EDC-8FF8-9828A6EF2040

DOI

https://doi.org/10.5281/zenodo.6535890

persistent identifier

https://treatment.plazi.org/id/03C20928-FFE5-FFD4-423C-17FA3F0809F0

treatment provided by

Felipe

scientific name

Sphex stadelmanni stadelmanni Kohl, 1895
status

 

Sphex stadelmanni stadelmanni Kohl, 1895

Figs 16 View Figs 13–18 , 21–22 View Figs 19–24. 19–20 , 95, 99 View Figure 93–99. 93, 96 (yellow)

Sphex stadelmanni Kohl, 1895: 67 Chlorion stadelmanni var. integrum Arnold, 1928: 372 , ♀, ♂ (syntypes: South Africa, KwaZulu-Natal, Scottburgh; Zimbabwe, Manicaland, Chirinda Forest; Mozambique, “Rikatla”, R. Stevenson leg.; SAM, TMP, not examined). Syn. nov.

Differential diagnosis

Within their species group, members of this species ( Fig. 95 View Figure 93–99. 93, 96 ) closely resemble those of S. abyssinicus and S. schoutedeni malawicus subsp. nov., as all three are black with primarily dark vestiture. The males of S. stadelmanni s. lat. are most easily distinguishable through the structure of their genitalia. The penis valvae are fused and curved towards the dorsal side, where they form a chalice-like configuration with a slightly widened margin ( Figs 21–22 View Figs 19–24. 19–20 ). The valvicipites are curved posteroventrally. In S. schoutedeni and its subspecies S. s. malawicus subsp. nov., the penis valvae lack a widened margin, and the valvicipites do not curve back toward the ventral side, but continue in dorsal direction ( Figs 23–24 View Figs 19–24. 19–20 ). In S. abyssinicus , the fused part of the valvae is dorsoventrally enlarged ( Fig. 26 View Figs 25–32. 25–26 ) and sternum VIII is conspicuously rectangular ( Fig. 25 View Figs 25–32. 25–26 ).

Males of S. abbotti abbotti ( Fig. 88 View Figs 85–92. 85–86 ) and S. bohemanni ( Fig. 90 View Figs 85–92. 85–86 ) are also similar, but can be identified via their incised sternum VII ( Figs 19–20 View Figs 19–24. 19–20 ). Those of the subspecies S. stadelmanni rufus subsp. nov. ( Fig. 97 View Figure 93–99. 93, 96 ) are characterized by having the central and lower part of the clypeus, as well as trochanter, femur and tibia, ferruginous instead of black.

Females of S. stadelmanni stadelmanni are very difficult to distinguish from those of S. abbotti abbotti , as both share uniformly black appressed clypeal and paraocular setae without a differently-colored luster ( Figs 15–16 View Figs 13–18 ). However, the ferruginous color of the mandibles is more extensive and also present on the free clypeal margin in S. stadelmanni stadelmanni . In contrast, S. abbotti abbotti has the clypeal margin and most of the mandibular base black. In some of the other females of the bohemanni group, the appressed setae on the paraocular area and clypeus are also black, but show a luster of a different color when viewed from certain angles ( Figs 14, 17–18 View Figs 13–18 ).

Material examined

Holotype

MOZAMBIQUE – Maputo Province • ♂; Delagoa Bay [now Maputo Bay] ; [25°59ʹ S, 32°42ʹ E]; ZMB. GoogleMaps

Other material

ESWATINI – Manzini Region • 1 ♂, 1 ♀; Middleveld, Malkerns Research Station ; [26°31ʹ41.7ʺ S, 31°11ʹ55.5ʺ E]; 16 Mar. 1979; G.G.M. Schulten leg.; RMNH GoogleMaps 1 ♂; same collection data as for preceding but 19 Apr. 1979; RMNH GoogleMaps .

MOZAMBIQUE – Maputo City • 1 ♀; Maputo, Universidade ; [25°58ʹ S, 32°35ʹ E]; 7 Feb. 1976; H.R. Feijen leg.; RMNH GoogleMaps . – Maputo Province • 3 ♂♂; same collection data as for holotype; ZMB GoogleMaps 3 ♂♂; same locality as for holotype; R. Monteiro leg.; ZMB GoogleMaps .

SOUTH AFRICA – Gauteng • 1 ♀; Johannesburg, Bloksberg ; [26°12ʹ16ʺ S, 28°02ʹ44ʺ E]; 1907; C.H. Pead leg.; BMNH GoogleMaps 2 ♀; Pretoria ; [25°43ʹ32ʺ S, 28°14ʹ38ʺ E]; W.L. Distant leg.; BMNH GoogleMaps 1 ♀; same locality as for preceding; 1 Jan. 1924; W. Lingnau leg.; DEI GoogleMaps . – KwaZulu-Natal • 1 ♂; 20 km S of Manguzi; [27°10ʹ45ʺ S, 32°42ʹ46ʺ E]; 3 Dec. 2002; Ma. Halada leg.; OÖLM GoogleMaps 1 ♂; Durban ; [29°53ʹ S, 31°03ʹ E]; 1902; F. Muir leg.; BMNH GoogleMaps 1 ♂; same locality as for preceding; W.L. Distant leg.; BMNH GoogleMaps 1 ♂; Durban, Blue Lagoon ; [29°48ʹ34.1ʺ S, 31°01ʹ59.4ʺ E]; 11 Mar. 1963; H.N. Empey leg.; RMNH GoogleMaps 1 ♀; Elephant Game Park, Tembe ; 27°03ʹ S, 32°24ʹ E; 23 Feb. 1997; F. Koch leg.; ZMB GoogleMaps 1 ♂; same collection data as for preceding but 19 Nov. 1999; ZMB GoogleMaps 1 ♀; Ithala Game Res. ; 27°30ʹ S, 31°20ʹ E; 28–30 Jan. 1995; F. Koch leg.; ZMB GoogleMaps 1 ♂; Ithala Game Res., Savannah ; 27°30ʹ S, 31°20ʹ E; 4–10 Apr. 2001; F. Koch leg.; ZMB GoogleMaps 1 ♂; Ithala Game Reserve, Louwsburg ; [27°32ʹ48.14ʺ S, 31°18ʹ48.71ʺ E]; 10–23 Dec. 1993; F. Koch leg.; THD-008-ZMB ; GenBank LWR gene: MW582288 View Materials ; ZMB GoogleMaps 1 ♂; same collection data as for preceding; ZMB GoogleMaps 1 ♂; Kosi Bay Nature Reserve ; 26°58ʹ S, 32°50ʹ E; 19 Apr. 1999; F. Koch leg.; THD-009-ZMB ; GenBank CO1 gene: MW538556 View Materials ; ZMB GoogleMaps 1 ♂; Malvern ; [29°53ʹ06ʺ S, 30°55ʹ30ʺ E]; 1904; J.P. Cregoe leg.; BMNH GoogleMaps 1 ♂, 1 ♀; Mbazwana ; [27°30ʹ S, 32°34ʹ44.4ʺ E]; 6 Dec. 2002; Ma. Halada leg.; OÖLM GoogleMaps 2 ♂♂; Pinetown ; [29°49ʹ S, 30°51ʹ E]; 21 Mar. 1910; G.F. Leigh leg.; TMP GoogleMaps 2 ♂♂; Salt Rock Beach ; [29°30ʹ10.98ʺ S, 31°14ʹ19.98ʺ E]; 8 Apr. 1958; CAS GoogleMaps 1 ♀; Scottburgh ; [30°17ʹ S, 30°45ʹ E]; 15 Mar. 1963; H.N. Empey leg.; RMNH GoogleMaps 1 ♂; same locality as for preceding; 14 Mar. 1926; R.H.R. Stevenson leg.; BMNH GoogleMaps 1 ♀; Shongweni Dam ; [29°51ʹ15ʺ S, 30°42ʹ50ʺ E]; 15 Jan. 1976; F.J. Herbst leg.; AMG GoogleMaps 1 ♂; same locality as for preceding; 25 Feb. 1971; F.L. Farquharson leg.; AMG GoogleMaps 2 ♀♀; Umtentweni ; 30°43ʹ S, 30°28ʹ E; 20 Apr. 1973; H.N. Empey leg.; AMG GoogleMaps . – Limpopo • 1 ♀; 16 km E of Louis Trichardt; [23°03ʹ59.6ʺ S, 30°03ʹ19.4ʺ E]; 8 Dec. 1974; J.G. and B.L. Rozen leg.; AMNH GoogleMaps 1 ♀; Lekgalameetse Nature Reserve ; 24°12ʹ S, 30°20ʹ E; 25–31 Mar. 2001; F. Koch leg.; ZMB GoogleMaps 1 ♂; same collection data as for preceding; ZMB GoogleMaps 1 ♀; same collection data as for preceding but 26 Mar.– 1 Apr. 2001; ZMB GoogleMaps 13 ♂♂, 3 ♀♀; same collection data as for preceding but 30 Oct.–3 Nov 2010; ZMB GoogleMaps . – Mpumalanga • 1 ♂, 1 ♀; 20 km NW of Nelspruit [now Mbombela]; [25°20ʹ09ʺ S, 30°49ʹ35.5ʺ E]; 26 Nov. 2003; J. Halada leg.; OÖLM GoogleMaps 1 ♀; Blyderevierspoort National Park ; 24°39ʹ S, 30°50ʹ E; 13 Dec. 1995; F. Koch leg.; ZMB GoogleMaps 2 ♀♀; same collection data as for preceding but 10 Nov. 1999; ZMB GoogleMaps 1 ♀; same collection data as for preceding but 13 Nov. 1999; ZMB GoogleMaps 1 ♀; same collection data as for preceding but 1–3 Apr. 2001; ZMB GoogleMaps .

ZAMBIA – Northern Province • 1 ♀; “L. Chambezi V. ; Kasama distr. ”; alt. 3900 ft; 4–6 May 1908; S.A. Neave leg.; OUMNH .

ZIMBABWE – Manicaland • 1 ♀; Chirinda Forest ; [20°24ʹ36ʺ S, 32°40ʹ08ʺ E]; Nov. 1930; BMNH GoogleMaps 1 ♂; same collection data as for preceding but Dec. 1935; BMNH GoogleMaps 1 ♂; same locality as for preceding; [20°24ʹ37ʺ S, 32°41ʹ57ʺ E]; 20 Oct. 1949; USNM GoogleMaps .

Description

Female

SIZE. 25.5–28.2 mm.

COLOR. Black except for basal half of mandible, free clypeal margin and occasionally femora, which are dark ferruginous. Wings uniformly fuscous, with cyan-purple iridescence.

VESTITURE.Appressed and erect setae on clypeus, paraocular area, collar, scutum and propodeal enclosure black. Erect propodeal setae oriented posteriorly. Lower center of clypeus glabrous. Scutellum densely and coarsely pubescent.

STRUCTURE. Free clypeal margin medially with two broad, indistinct processes, stepped above. Clypeus with indentation in lower center, longitudinal carina in upper center barely noticeable. Scutellum convex. Metanotum not raised, not notably bituberculate. 2 nd recurrent vein joins markedly proximal from interstitium between submarginal cells II and III. Propodeal enclosure without any notable ridges. Foretarsomere I 2.4–2.6 × length of antepenultimate spine. Petiole length 1.3–1.7× its medial width.

Male

SIZE. 22.9–27.0 mm.

COLOR. Black except for basal half of mandible, which is ferruginous. Wings slightly fuscous, with cyan-purple iridescence.

VESTITURE. Appressed setae on clypeus and paraocular area brassy, on collar, scutum and propodeal enclosure black. Erect setae on clypeus, paraocular area, collar, scutum and propodeal enclosure black, on posterior margin of propodeum brassy in some specimens. Erect propodeal setae oriented posteriorly.

Free clypeal margin glabrous. Scutellum densely and coarsely pubescent. Metasomal sterna II–VII with increasingly dense fringes of black setae.

STRUCTURE. Free clypeal margin simple. Scutellum convex. Metanotum not raised, not bituberculate. 2 nd recurrent vein joins markedly proximal from interstitium between submarginal cells II and III. Propodeal enclosure without any notable ridges. Posterior margin of metasomal tergum VII convex. Posterior margin of metasomal sternum VII simple, of metasomal sternum VIII semicircular. Fused penis valvae laterally widened, without notch, valviceps oriented posterodorsally. Petiole length 1.6–2.2× its medial width. Flagellomeres IV–VI with broad placoids covering their entire length.

Variation

Unknown.

Distribution

Southeastern Africa.

Remarks

Of Sphex stadelmanni stadelmanni , only the holotype is known. It differs from members of the subspecies S. s. integer ( Arnold, 1928), which was described about 30 years later, in a single character: S. s. stadelmanni possesses a very notable broad incision on the posterior margin of tergum VII, while S. s. integer has tergum VII entire. We have studied several other males from the same locality as the type, presumably collected in a similar time period, but all of them, as well as every other specimen we examined that belonged to S. stadelmanni s. lat. were either S. s. integer or S. s. rufus subsp. nov. The morphological disparity in the holotype of S. stadelmanni stadelmanni might have been the result of malformation during ontogeny. This hypothesis is corroborated by the fact that all of the other terga of the specimen appear to be deformed in a similar way, albeit asymmetrically and only on the right side. It seems as though in this case, the emarginations are placed more centrally on a tergum the further posterior it is, so the symmetrical incision on the final tergum could fit with this theory. We propose that S. s. integer becomes a synonym of S. s. stadelmanni , as the holotype of S. s. stadelmanni is presumably merely an aberration of the same species, though the name has priority. Perhaps future DNA analyses will reveal more information, but with the methods used in this project we cannot hope to generate meaningful data from this over 120-year-old specimen.

ZMB

Germany, Berlin, Museum fuer Naturkunde der Humboldt-Universitaet

BMNH

United Kingdom, London, The Natural History Museum [formerly British Museum (Natural History)]

DEI

Germany, Muencheberg, Deutsches Entomologisches Institut im ZALF

TMP

Taiwan [Republic of China], Taipei, Taiwan Provincial Museum

CAS

USA, California, San Francisco, California Academy of Sciences

AMG

South Africa, Cape Province, Grahamstown, Albany Museum

AMNH

USA, New York, New York, American Museum of Natural History

OUMNH

United Kingdom, Oxford, University Museum of Natural History

USNM

USA, Washington D.C., National Museum of Natural History, [formerly, United States National Museum]

ZMB

Museum für Naturkunde Berlin (Zoological Collections)

RMNH

National Museum of Natural History, Naturalis

DEI

Senckenberg Deutsches Entomologisches Institut

TMP

Transvaal Museum

CAS

California Academy of Sciences

AMG

Albany Museum

AMNH

American Museum of Natural History

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Vespidae

Genus

Sphex

Loc

Sphex stadelmanni stadelmanni Kohl, 1895

Dörfel, Thorleif H. & Ohl, Michael 2022
2022
Loc

Sphex stadelmanni

Arnold G. 1928: 372
Kohl F. F. 1895: 67
1895