Sphex jansei Cameron, 1910

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 : 129-133

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.6535900

persistent identifier

https://treatment.plazi.org/id/03C20928-FF11-FF27-4240-12C23F5B0AB9

treatment provided by

Felipe

scientific name

Sphex jansei Cameron, 1910
status

 

Sphex jansei Cameron, 1910

Figs 2 View Figs 1–6. 1–3 , 29–30 View Figs 25–32. 25–26 , 106–107, 112 View Figs 106–112. 106–107 (purple)

Sphex jansei Cameron, 1910: 139 , ♂ (holotype or syntype: 1 ♂, South Africa, Gauteng, Pretoria, TMP, not examined).

Chlorion rufiscute R. Turner, 1918: 359 , ♀, ♂ (as C. rufiscutis , incorrect original termination). Syn. nov.

Sphex mochii Giordani Soika, 1942: 197 , ♀ (as S. Mochii , incorrrect original capitalization) (holotype: ♀, Ethiopia, Oromia Region, km 46 on Harrar– Dire Daua Road, depository?, not examined). Syn. nov.

Differential diagnosis

Females of S. jansei ( Fig. 106 View Figs 106–112. 106–107 ) are distinguished through their hyaline cellular wing area ( Fig. 29 View Figs 25–32. 25–26 ) and silvery-white propodeal setae, whereas those of S. gaullei ( Fig. 104 View Figs 100–105. 100–101 ) and S. schmideggeri sp. nov. ( Fig. 108 View Figs 106–112. 106–107 ) have the propodeal setae brownish-grey. The cellular wing area of S. gaullei is somewhat infuscate ( Fig. 31 View Figs 25–32. 25–26 ), while that of S. schmideggeri sp. nov. has a distinct yellow tinge.

Males of S. jansei ( Fig. 107 View Figs 106–112. 106–107 ), as well as those of S. gaullei ( Fig. 105 View Figs 100–105. 100–101 ), are distinguished from those of the remaining group members by their combination of a notable ferruginous clypeus and golden erect facial setae. Sphex jansei has the cellular forewing area hyaline and only a fuscous spot on the anterior part of the apical hindwing margin ( Fig. 30 View Figs 25–32. 25–26 ), whereas S. gaullei has most of the cellular forewing area and all of the hindwing apex infuscate ( Fig. 32 View Figs 25–32. 25–26 ).

Material examined

AFRICA • 3 ♀♀; ZMB .

BOTSWANA – South-East District • 1 ♂, 1 ♀; Gaborone Dam ; [24°42ʹ0.58ʺ S, 25°55ʹ34.97ʺ E]; 28 Dec. 1977; H.R. Feijen leg.; RMNH GoogleMaps .

CENTRAL AFRICAN REPUBLIC – Ouham-Pendé • 1 ♀; Bozoum ; [6°19ʹ02ʺ N, 16°22ʹ42ʺ E]; 30 Apr. 1914; S. Tessmann leg.; ZMB GoogleMaps .

KENYA – Homa Bay County • 1 ♂; Gembe Hills , near seasonal stream; 0.48933° S, 34.24333° E; 15– 22 Jan. 2005; R. Copeland leg.; ICIPE GoogleMaps . – Nakuru County • 1 ♂; Mount Longonot Crater ; [0°54ʹ55ʺ S, 36°27ʹ25ʺ E]; Dec. 1911; Ch. Alluaud and Jeannel leg.; MNHN GoogleMaps .

MALAWI • 1 ♂, 1 ♀; NW shore of Lake Nyasa, between Florence Bay and Karonga; 30 Jun.–6 Jul. 1910; S.A. Neave leg.; BMNH. – Northern Region • 1 ♂; Karonga; [9°56ʹ S, 33°56ʹ E]; 7–11 Jul. 1910; S.A. Neave leg.; BMNH GoogleMaps 1 ♂, 1 ♀; Karonga District, valley of N Rukuru; [9°56ʹ S, 33°56ʹ E]; 15–18 Jul. 1910; S.A. Neave leg.; BMNH. – GoogleMaps Southern Region • 1 ♂; Liwonde ; [14°50ʹ S, 35°20ʹ E]; 23 Apr. 1975; G.G.M. Schulten leg.; RMNH GoogleMaps .

MOZAMBIQUE – Maputo City • 1 ♂; Maputo ; [25°58ʹ S, 32°35ʹ E]; 12 Feb. 1994; G.G.M. Schulten leg.; RMNH GoogleMaps . – Maputo Province • 1 ♂; Moamba ; [25°36ʹ14.4ʺ S, 32°14ʹ45.6ʺ E]; 27 Jan. 1976; G.G.M. Schulten leg.; RMNH GoogleMaps 1 ♀; Rikatla , N of Maputo; [25°46ʹ57.9ʺ S, 32°37ʹ22.1ʺ E]; 7–18 Apr. 1982; G.G.M. Schulten leg.; RMNH GoogleMaps .

SOUTH AFRICA – Gauteng • 3 ♂♂, 1 ♀; Pretoria ; [25°43ʹ32ʺ S, 28°14ʹ38ʺ E]; 25 Jan.–5 Mar. 1969; R.T. Simon Thomas leg.; RMNH GoogleMaps 1 ♀; Salt Pan, Pretoria ; [25°24ʹ30.55ʺ S, 28°04ʹ57.1ʺ E]; 4–10 Feb. 1929; G. van Son leg.; TMP GoogleMaps 1 ♀; same collection data as for preceding but 14 Mar. 1956; TMP GoogleMaps . – KwaZulu-Natal • 1 ♂; Estcourt ; [29°00ʹ S, 29°53ʹ E]; 4 Mar. 1963; H.N. Empey leg.; RMNH GoogleMaps 1 ♂; Ithala Game Res. ; 27°30ʹ S, 31°20ʹ E; 28–30 Jan. 1995; F. Koch leg.; THD-025-ZMB ; Genbank CO1 gene: MW538561 View Materials ; ZMB GoogleMaps 1 ♀; Lake St Lucia, False Bay ; [28°00ʹ31.3ʺ S, 32°21ʹ39.9ʺ E]; 13–17 Feb. 1967; D. Gillissen and L. Blommers leg.; RMNH GoogleMaps 1 ♂; Mkuze Game Reserve ; 27°37ʹ S, 32°14ʹ E; 26 Feb.–3 Mar. 1987; A.J. Weaving leg.; AMG GoogleMaps 1 ♂, 2 ♀♀; same collection data as for preceding but 8–12 Mar. 1987; AMG GoogleMaps 1 ♀; Weenen ; [28°50ʹ57ʺ S, 30°04ʹ38ʺ E]; Feb. 1925; H.P. Thomasset leg.; BMNH GoogleMaps 1 ♂; same collection data as for preceding but Mar. 1925; BMNH GoogleMaps 1 ♂, 1 ♀; same collection data as for preceding but Jan.–Mar. 1927; BMNH GoogleMaps . – Limpopo • 1 ♂; Punda Milia, Kruger National Park ; [22°41ʹ51.5ʺ S, 31°01ʹ13.8ʺ E]; 22 Feb. 1969; R.T. Simon Thomas leg.; RMNH GoogleMaps . – Mpumalanga • 1 ♀; 40 km SW of Komalipoor; [25°48ʹ43ʺ S, 31°49ʹ46ʺ E]; 1–2 Jan. 2004; J. Halada leg.; OÖLM GoogleMaps 2 ♀♀; Blyde River Canyon ; [25°14ʹ40.5ʺ S, 30°16ʹ24.1ʺ E]; 28 Feb. 1982; F.J. Herbst leg.; AMG GoogleMaps . – North West • 1 ♀; Mamagalieskraal ; [25°32ʹ S, 27°49ʹ E]; 16 Mar. 1926; W. Lingnau leg.; DEI GoogleMaps .

TANZANIA – Lindi Region • 1 ♂; Lindi; [9°59ʹ49ʺ S, 39°42ʹ59ʺ E]; 24–30 Jun. 1936; Zerny leg.; NHMW GoogleMaps . – Mbeya Region • 2 ♀♀; Langenburg [now Tukuyu] ; [9°15ʹ S, 33°39ʹ E]; 26 Jul.–8 Aug. 1898; F. Fülleborn leg.; ZMB GoogleMaps 1 ♀; same collection data as for preceding but 3 Sep.–4 Nov. 1898; ZMB GoogleMaps . – Morogoro Region • 1 ♀; 50 km SW of Morogoro; 6°50ʹ S, 37°15ʹ E; 12 Jan. 2007; J. Halada leg.; OÖLM GoogleMaps . – Rukwa Region • 1 ♀; Kafokola, Rukwa Valley , SW Tanganyika; [8°00ʹ S, 32°00ʹ E]; 9 Jun. 1952; O.W. Richards leg.; BMNH GoogleMaps .

ZAMBIA • 1 ♀; “ Luangwa to Petauke ”; 14–17 Sep. 1910; S.A. Neave leg.; BMNH 1 ♀, holotype of Chlorion rufiscute R. Turner, 1918 ; “ Sinapunge ”; 13 Feb. 1911; Silverlock leg.; BMNH 1 ♂, 1 ♀; same collection data as for preceding; BMNH. – Eastern Province • 1 ♂; near mouth of Lusangazi River; [13°25ʹ57.5ʺ S, 31°32ʹ31ʺ E]; 1–3 Sep. 1910; S.A. Neave leg.; BMNH GoogleMaps .

ZIMBABWE – Bulawayo • 1 ♀; Bulawayo ; [20°10ʹ12ʺ S, 28°34ʹ48ʺ E]; 26 Jul. 1923; R.H.R. Stevenson leg.; USNM GoogleMaps . – Manicaland • 2 ♂♂; 10–20 km S of Birchenough Bridge; [20°05ʹ35.8ʺ S, 32°21ʹ06.7ʺ E]; 24 Dec. 1998; M. Snižek leg.; OÖLM GoogleMaps . – Mashonaland West • 1 ♀; 15 km NW of Makuti; [16°12ʹ S, 29°09ʹ E]; 12 Apr. 1985; J. Gusenleitner leg.; NHMW GoogleMaps 1 ♂; Sanyati Camp, Lake Kariba ; [17° S, 28° E]; 8–10 Jan. 1985; A.J. Weaving leg.; AMG GoogleMaps . – Matabeleland North • 1 ♂; Lonely Mine ; [19°30ʹ06ʺ S, 28°44ʹ49ʺ E]; 18 Apr. 1914; H. Swale leg.; BMNH GoogleMaps 1 ♂; same collection data as for preceding but 19 Sep. 1914; BMNH GoogleMaps 1 ♀; Matetsi ; [18°05ʹ S, 26°07ʹ E]; 1 Apr. 1934; R.H.R. Stevenson leg.; RMNH GoogleMaps 1 ♀; same collection data as for preceding but 28 Oct. 1934; BMNH GoogleMaps 1 ♂; Victoria Falls ; [17°56ʹ S, 25°50ʹ E]; 14 Jan. 1969; F.J. Herbst leg.; AMG GoogleMaps . – Matabeleland South • 1 ♀; Beit Bridge ; [22°13ʹ S, 30°00ʹ E]; Apr. 1932; A. Mackie leg.; BMNH GoogleMaps 2 ♂♂; same locality as for preceding; 27 Mar. 1960; C.F. Jacot-Guillarmod leg.; AMG GoogleMaps .

Description

Female

SIZE. 21.2–25.0 mm.

COLOR. Black except for the following, which are ferruginous: basal half of mandible, scape, pedicel, flagellomeres I–IV, clypeus, legs from trochanter onward, excluding apical half of claw, and occasionally collar dorsally, tegula, scutellum, dorsal part of metanotum and apical segment of metasoma. Cellular area of fore- and hindwing hyaline, apical margin fuscous.

VESTITURE. Appressed and erect setae on clypeus and paraocular area golden, on collar, scutum and propodeal enclosure silvery. Erect propodeal setae oriented anteriorly. Clypeus medially with vertical glabrous stripe. Scutellum densely and finely pubescent.

STRUCTURE. Free clypeal margin stepped medially, with slight indentation above. Scutellum convex. Metanotum slightly raised, not markedly bituberculate. 2 nd recurrent vein joins markedly proximal from interstitium between submarginal cells II and III. Propodeal enclosure without any notable ridges. Foretarsomere I 1.8–2.0× length of antepenultimate spine. Petiole length 2.4–2.7× its medial width.

Male

SIZE. 20.1–22.8 mm.

COLOR. Black except for the following, which are ferruginous: basal half of mandible, scape, pedicel ventrally, lower part of clypeus, legs from trochanter onward, excluding posterodorsal portion of trochanter and femur as well as apical half of claw, tegula and dorsal part of scutellum. Cellular area of forewing hyaline, apical margin fuscous. Hindwing hyaline.

VESTITURE. Appressed setae on clypeus and paraocular area silvery-golden, on collar, scutum and propodeal enclosure silvery. Erect setae on clypeus and paraocular area golden, on collar, scutum and propodeal enclosure silvery. Erect propodeal setae oriented anteriorly. Clypeus medially with vertical glabrous stripe. Scutellum densely and finely pubescent.

STRUCTURE. Free clypeal margin simple. Scutellum convex. Metanotum slightly raised, not bituberculate. 2 nd recurrent vein joins markedly proximal from interstitium between submarginal cells II and III. Propodeal enclosure with indistinct ridges. Posterior margin of metasomal tergum VII convex. Posterior margin of metasomal sternum VII simple, of metasomal sternum VIII concavely emarginate. Penis valvae without conspicuous modifications. Petiole length 2.3–2.8 × its medial width. Flagellomeres III + IV with narrow placoids covering their entire length.

Variation

Unknown.

Distribution

Southeastern to eastern Africa.

Remarks

Besides the original description, there are almost no other publications that mention diagnostic characters for this species. Brauns (1917) placed it in the genus Isodontia Patton, 1880 , which, as correctly noted by Arnold (1928), must be incorrect due to the length of the petiole being described as only one-fourth longer than the hind coxa. Arnold also indicated that S. jansei may be synonymous to S. rufiscutis , but he was not able to certify this because of “the description of the colour […] [being] too confused”. He stated that the type specimen of S. jansei could no longer be found in the TMP. Despite receiving material from the collection and having specifically requested the type specimen to be sent, it was not included in the loan, and further inquiries remained unanswered. Thus, we were forced to rely solely on the original description.

Part of the reason why it is difficult to interpret the color characters given by Cameron (1910) is that there likely were some important words omitted in the text; an attempt at correcting this issue is presented here:

“Black; … mandibles, except the teeth, [red, as well as] the apex of clypeus, the centre broadly (the red colour extending near to the middle in the centre), the sides narrowly, antennal scape, tegulae, and the legs, except the [following which are all black:] coxae, greater part of the trochanters, a streak on the basal outer half of the fore femora, the basal three-fourths of the middle behind, and the hinder with more than three-fourths, …”

Assuming these changes concur with Cameron’s intended description, the characters mentioned very closely match those we observed in males of S. rufiscutis and even rule out conspecificity with the similar S. gaullei , which is found in the equatorial regions of Africa, on account of the wing coloration. The geographic distribution of S. jansei and S. rufiscutis fit together as well, and all other species from southern Africa, an area from which we examined a large amount of material, are quite distinct. Therefore, we propose that jansei becomes the valid name for this species.

The type material of Sphex mochii Giordani Soika, 1942 , is apparently lost, so the original description by Giordani Soika (1942) is the only basis we can use to discern its taxonomic identity.

The original description stated that the female of S. mochii is similar to that of S. rufiscutis (R. Turner, 1918) (= S. jansei Cameron, 1910 ). The scutellum was said to be more convex than in S. jansei , and the scutellum and metanotum are medially impressed. The petiole was described as being much shorter than in S. pruinosus . The wings of S. mochii were stated to be hyaline with the apical margin of the forewing infuscate, and the color pattern described corresponds with that of S. jansei and three other African species that are superficially similar ( S. gaullei , S. pseudosatanas sp. nov. and S. occidentalis sp. nov.). Even so, the description cannot refer to S. pseudosatanas sp. nov., as this species has the scutellum markedly flatter than in S. jansei . Additionally, S. occidentalis sp. nov. can be ruled out due to its having uniformly fuscous wings. Finally, S. gaullei does not entirely match the description either, because a large part of its cellular wing area is infuscate ( Fig. 31 View Figs 25–32. 25–26 ). Also, the scutellum of S. jansei and S. gaullei is more or less identical. We conclude that S. mochii is identical to S. jansei (= rufiscutis ), which is in contrast to Giordani Soika’s original interpretation.

ZMB

Germany, Berlin, Museum fuer Naturkunde der Humboldt-Universitaet

MNHN

France, Paris, Museum National d'Histoire Naturelle

BMNH

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

TMP

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

AMG

South Africa, Cape Province, Grahamstown, Albany Museum

DEI

Germany, Muencheberg, Deutsches Entomologisches Institut im ZALF

ZMB

Museum für Naturkunde Berlin (Zoological Collections)

RMNH

National Museum of Natural History, Naturalis

TMP

Transvaal Museum

AMG

Albany Museum

DEI

Senckenberg Deutsches Entomologisches Institut

NHMW

Naturhistorisches Museum, Wien

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Vespidae

Genus

Sphex

Loc

Sphex jansei Cameron, 1910

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

Sphex mochii

Giordani Soika A. 1942: 197
1942
Loc

Chlorion rufiscute R. Turner, 1918: 359

Turner R. E. 1918: 359
1918
Loc

Sphex jansei

Cameron P. 1910: 139
1910