Sphex incomptus Gerstaecker, 1871

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 : 89-93

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.6535870

persistent identifier

https://treatment.plazi.org/id/03C20928-FFC9-FFFF-426B-179B3D290B6E

treatment provided by

Felipe

scientific name

Sphex incomptus Gerstaecker, 1871
status

 

Sphex incomptus Gerstaecker, 1871

Figs 85, 91 View Figs 85–92. 85–86 (red)

Sphex incomptus Gerstaecker, 1871: 352 , ♂.

Chlorion nyanzae R. Turner, 1918: 358 , ♀, ♂. Synonymized with Chlorion incomptum by Arnold 1928: 368.

Differential diagnosis

The members of this species are recognizable through having the majority of the propodeal setae silvery ( Fig. 85 View Figs 85–92. 85–86 ). Excepting the unmistakable S. ahasverus , which possesses rich golden vestiture, the other females in the nigrohirtus group have predominantly black erect propodeal setae ( Figs 83–84 View Figs 79–84. 79–80 , 86 View Figs 85–92. 85–86 ). Males of S. pulawskii sp. nov. have some of the propodeal setae silvery, but are differentiated through their conspicuous purple wing iridescence ( Fig. 87 View Figs 85–92. 85–86 ).

Material examined

Holotype or syntype TANZANIA – Tanga Region • 1 ♂; Wanga ; [5°12ʹ S, 39°04ʹ E]; v. d. Deck leg.; ZMB GoogleMaps .

Other material

AFRICA • 1 ♀; 26 Mar. 1912; C.A. Wiggins leg.; OUMNH .

ANGOLA • 1 ♀; Welwilsch leg.; BMNH. – Huíla Province • 1 ♀; 1886; Campana leg.; MNHN .

CAMEROON – Southwest Region • 1 ♀; Malende Mukuya , S of Kumba; [4°21ʹ25ʺ N, 9°25ʹ58ʺ E]; 17 May 2006; J. Oehlke leg.; coll. Jacobs. GoogleMaps

DEMOCRATIC REPUBLIC OF THE CONGO • 2 ♀♀; “ Sankuru ”; 1910; Abrassart leg.; MRAC 1 ♀; Lomami , Kabwe; Jul.–Aug. 1931; P. Quarré leg.; MRAC. – Bas-Uele • 1 ♀; Bambesa ; [3°28ʹ N, 25°43ʹ E]; 10 Oct. 1933; J.V. Leroy leg.; MRAC GoogleMaps 1 ♀; Poko ; 3°10ʹ N, 26°50ʹ E; Aug. 1913; Lang and Chapin leg.; AMNH. – GoogleMaps Haut-Katanga • 1 ♀; Moera , primary forest ; [11°21ʹ47ʺ S, 26°42ʹ20ʺ E]; 1910; Grauer leg.; NHMW. – GoogleMaps Ituri Province • 1 ♀; Bunia ; [1°34ʹ N, 30°15ʹ E]; 1938; P. Lefèvre leg.; MRAC GoogleMaps 1 ♀; same locality as for preceding; 1 Feb. 1934; J.V. Leroy leg.; MRAC. – GoogleMaps Kasaï • 1 ♀; Ikeke ; [4°19ʹ S, 21°15ʹ E]; 8 May 1946; V. Lagae leg.; MRAC GoogleMaps 1 ♀; Ngombe ; [6°35ʹ S, 20°42ʹ E]; 16 Nov. 1921; H. Schouteden leg.; MRAC. – GoogleMaps Kongo Central • 1 ♀; Mangembo ; [4°35ʹ04ʺ S, 14°16ʹ20ʺ E]; 1932; Zwolakowski leg.; MRAC GoogleMaps 1 ♂; Moanda ; [5°56ʹ S, 12°21ʹ E]; Nov. 1934; P. Henrard leg.; MRAC. – GoogleMaps Mai-Ndombe Province • 1 ♀; Tua ; [3°38ʹ S, 16°38ʹ E]; 6 Jun. 1913; J. Maes leg.; MRAC. – Maniema GoogleMaps 1 ♂, 1 ♀; Lubutu ; [0°44ʹ S, 26°35ʹ E]; 22 Jan. 1915; J. Bequaert leg.; MRAC. – GoogleMaps North Kivu • 1 ♀; Irangi , Luhoha River; [1°50ʹ S, 28°26ʹ E]; 10 Sep. 1957; CAS GoogleMaps 2 ♀♀; Parc National de Virungas , Oycha region; Apr.–May 1950; J. de Wilde leg.; MRAC 1 ♀; Ukaika ; [0°30ʹ N, 29°00ʹ E]; Dec. 1910; Grauer leg.; NHMW. – GoogleMaps Province of Équateur • 1 ♂; Eala ; [0°02ʹ30ʺ N, 18°20ʹ06ʺ E]; 6 Oct. 1931; H.J. Brédo leg.; MRAC GoogleMaps 1 ♂; same collection data as for preceding but 19 Oct. 1931; MRAC GoogleMaps 1 ♀; same collection data as for preceding but Nov. 1931; MRAC GoogleMaps 2 ♂♂; same collection data as for preceding but 22 Nov. 1931; MRAC GoogleMaps 1 ♂; same collection data as for preceding but Mar. 1932; MRAC GoogleMaps 1 ♂; same collection data as for preceding but May 1932; MRAC GoogleMaps 2 ♂♂; same locality as for preceding; Jun. 1932; A. Corbisier leg.; MRAC GoogleMaps 1 ♀; same collection data as for preceding but 7 Jul. 1932; MRAC GoogleMaps 1 ♂; same collection data as for preceding but Nov. 1932; MRAC GoogleMaps 1 ♀; same collection data as for preceding but Dec. 1932; MRAC GoogleMaps 1 ♂; same collection data as for preceding but 14 Mar. 1933; MRAC GoogleMaps 2 ♂♂, 1 ♀; same collection data as for preceding but Apr. 1933; MRAC GoogleMaps 1 ♀; same locality as for preceding; May 1935; J. Ghesquière leg.; MRAC. – GoogleMaps Sankuru • 1 ♀; Kondue ; [4°58ʹ S, 23°16ʹ E]; Leonhard leg.; MRAC. – GoogleMaps Tshopo • 1 ♀; Stanleyville [now Kisangani] ; 0°30ʹ N, 25°10ʹ E; 10 Apr. 1915; Lang and Chapin leg.; AMNH GoogleMaps 1 ♀; Stanleyville [now Kisangani] ; 0°30ʹ N, 25°10ʹ E; 11 Apr. 1915; Lang and Chapin leg.; AMNH. – GoogleMaps Tshuapa • 1 ♀; Bokuma ; [0°06ʹ S, 18°41ʹ E]; Jul. 1952; R.P. Lootens leg.; MRAC GoogleMaps .

EQUATORIAL GUINEA – Centro Sur • 2 ♂♂; Uelleburg ; [1°49ʹ N, 10°36ʹ E]; 1–14 Feb. 1907; G. Tessmann leg.; ZMB GoogleMaps .

GABON – Estuaire Province • 1 ♂; Crystal Mountains, Muni ; [0°49ʹ45.6ʺ N, 10°08ʹ5.7ʺ E]; 15–31 Oct. 1969; A. Villiers leg.; MNHN GoogleMaps 1 ♀; Libreville ; [0°23ʹ24.36ʺ N, 9°27ʹ15.84ʺ E]; MNHN GoogleMaps .

REPUBLIC OF THE CONGO – Brazzaville Department • 1 ♀; Djoumouna, Yaka-Yaka ; [4°22ʹ34ʺ S, 15°09ʹ36ʺ E]; 3 Feb. 1977; S. Kellner-Pillaut leg.; MNHN GoogleMaps . – Kouilou Department • 1 ♀; Dimonika ; [4°11ʹ55.8ʺ S, 12°21ʹ19.7ʺ E]; Jan. 1964; A. Descarpentries and A.Villiers leg.; MNHN GoogleMaps 1♀; same locality as for preceding; 18 May 1977; J.-P. Grillot and C. Morin leg.; MNHN GoogleMaps . – Lékoumou Department • 1 ♀; Ogooué River ; [2°26ʹ40.7ʺ S, 13°41ʹ29.4ʺ E]; 1911; F. Faure leg.; MNHN GoogleMaps .

TANZANIA – Kagera Region • 1 ♀, paratype of Chlorion nyanzae R. Turner, 1918 ; Bukoba ; [1°19ʹ54ʺ S, 31°48ʹ44ʺ E]; 9–11 Jun. 1912; C.C. Gowdey leg.; BMNH GoogleMaps . – Mjini Magharibi Region • 1 ♂, 1 ♀; Kizimbani ; [9°03ʹ42.5ʺ S, 39°19ʹ3.1ʺ E]; 15 Jun. 1985; G.G.M. Schulten leg.; RMNH GoogleMaps 1 ♂; Zanzibar; [6°08ʹ S, 39°20ʹ E]; Hildebrandt leg.; NHMW GoogleMaps 2 ♂♂; same collection data as for preceding; ZMB GoogleMaps 1 ♀; same locality as for preceding; Raffray leg.; NHMW GoogleMaps . – Unguja South Region • 1 ♂; Zanzibar, Jambiani ; [6°19ʹ S, 39°33ʹ E]; 23 Mar. 1993; K.M. Guichard leg.; BMNH GoogleMaps 2 ♂♂; Zanzibar, Mzingani Forest ; [6°10ʹ S, 39°18ʹ E]; 28 Mar. 1993; K.M. Guichard leg.; BMNH GoogleMaps .

UGANDA – Central Region • 1 ♀; “ Entebbe, Forest within 4 mi. of Kitabi Hill ”; Jan.–Feb. 1913; C.A. Wiggins leg.; OUMNH 1 ♂; Entebbe ; [0°03ʹ N, 32°27ʹ36ʺ E]; Aug. 1911; C.C. Gowdey leg.; BMNH GoogleMaps 1 ♀; same collection data as for preceding but 14–25 May 1912; BMNH GoogleMaps 1 ♀; same collection data as for preceding but 1–4 Jun. 1912; BMNH GoogleMaps 5 ♀♀; same collection data as for preceding but Aug. 1912; BMNH GoogleMaps 1 ♀; same collection data as for preceding but Oct. 1912; BMNH GoogleMaps 1 ♀; same locality as for preceding; 12–20 Jan. 1912; S.A. Neave leg.; BMNH GoogleMaps 1 ♂, holotype of Chlorion nyanzae R. Turner, 1918 ; same collection data as for preceding; BMNH GoogleMaps 1 ♀; Mabira ; [0°29ʹ03ʺ N, 32°59ʹ05ʺ E]; 15 Sep. 1910; C.C. Gowdey leg.; BMNH GoogleMaps 1 ♀; Northern Buddu ; [0°25ʹ S, 31°40ʹ E]; 16–18 Sep. 1911; S.A. Neave leg.; BMNH GoogleMaps 1 ♂; NW Lake Victoria, Kerenge Island ; [0°03ʹ49ʺ N, 33°00ʹ14ʺ E]; 26 Jan. 1919; G.D. Hale Carpenter leg.; OUMNH GoogleMaps 1 ♂; Tero Forest ; [0°50ʹ S, 31°40ʹ E]; Jul. 1912; C.C. Gowdey leg.; BMNH GoogleMaps 2 ♂♂; Tero Forest , SE of Buddo; [0°50ʹ S, 31°40ʹ E]; 26–30 Sep. 1911; S.A. Neave leg.; BMNH GoogleMaps . – Western Region • 1 ♀; Kabarole Kibale Forest National Park, Kanyawara (MUBFS) ; 0°33ʹ N, 30°21ʹ E; 23 Aug. 1997; C. Häuser leg.; ZMB GoogleMaps 1 ♂; Kichwamba, Ankole ; [0°13ʹ08.2ʺ S, 30°05ʹ50.3ʺ E]; 1–5 May 1968; P.J. Spangler leg.; USNM GoogleMaps 1 ♀; near Rwera, SW of Hoima; [1°02ʹ25ʺ S, 30°18ʹ47ʺ E]; 30 Nov. 2001; M. Snižek leg.; OÖLM GoogleMaps .

ZIMBABWE – Mashonaland Central • 1 ♂; Mavhuradonha Saf., 15 km SE of Muzarabani; [16°33ʹ33ʺ S, 31°14ʹ22.8ʺ E]; 17 Dec. 1998; J. Halada leg.; THD-035-OOLM ; GenBank LWR gene: MW582292 View Materials ; OÖLM GoogleMaps .

Description

Female

SIZE. 23.7–25.7 mm.

COLOR. Black except for basal half of mandible and free clypeal margin, which are ferruginous.

FOREWING. Slightly fuscous, with violet iridescence. Basal half of hindwing hyaline, apical margin slightly infuscate.

VESTITURE. Appressed setae on clypeus, paraocular area, collar and propodeal enclosure silvery, on scutum laterally silvery, otherwise black. Erect setae on clypeus and paraocular area black, on collar silvery intermixed with black ones, on scutum black intermixed with silvery ones, on propodeal enclosure silvery. Erect propodeal setae oriented posteriorly. Lower center of clypeus glabrous. Scutellum densely and coarsely pubescent.

STRUCTURE. Free clypeal margin with broad, shovel-like process medially, not stepped above. Clypeus with slight indentation in lower center and longitudinal carina above. 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. Foretarsomere I 2.8–3.0× length of antepenultimate spine. Petiole length 1.7–2.3 × its medial width.

Male

SIZE. 20.5 mm.

COLOR. Black except for ferruinous stripe in center of mandible. Forewing slightly fuscous, with violet iridescence. Basal half of hindwing hyaline, apical margin slightly infuscate.

VESTITURE. Appressed setae on clypeus, paraocular area, collar and propodeal enclosure silvery, on scutum laterally silvery, otherwise black. Erect setae on clypeus, paraocular area and scutum black intermixed with silvery ones, on collar silvery intermixed with black ones and on propodeal enclosure silvery. Erect propodeal setae oriented posteriorly. Lower center of clypeus glabrous. Scutellum densely and coarsely pubescent. Metasomal sterna II–VI 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 gently notched. Posterior margin of metasomal sternum VII simple, of metasomal sternum VIII concavely emarginate. Penis valvae without conspicuous modifications. Petiole length 2.2–2.9 × its medial width. Flagellomere V with narrow placoid covering its proximal four-fifths and tapering distally.

Variation

Unknown.

Distribution

Central to eastern Africa.

Remarks

There seems to have been some confusion regarding the differentiation between this taxon and the closely related S. nigrohirtus , which we were able to clear up through the study of their types. When Kohl (1895) compared them with each other, he correctly stated that one of the few differences between the males of both species is the color of the clypeal and thoracical setae. In S. incomptus , the black erect setae on the clypeus, scutum, scutellum and metanotum are intermixed with silvery ones, while the erect setae on the collar and propodeum are exclusively silvery. In contrast, S. nigrohirtus has the erect setae in these areas almost uniformly black. Even though Arnold was apparently aware of this fact and mentioned it in the redescriptions of both species (1928), he nevertheless assigned several specimens with uniformly black vestiture to S. incomptus without actually citing any characters to disassociate them from S. nigrohirtus . Later, Leclercq (1955) would continue this path with his establishment of the subspecies S. incomptus anonymus for specimens with only black pilosity. Our study of the types showed that they are actually members of S. nigrohirtus . Subsequently, specimens of S. nigrohirtus were prone to be misidentified as belonging to S. incomptus , which is evident in the material examined by Dollfuss (2008), where most of the locality records given for S. incomptus in reality correspond to S. nigrohirtus .

ZMB

Germany, Berlin, Museum fuer Naturkunde der Humboldt-Universitaet

OUMNH

United Kingdom, Oxford, University Museum of Natural History

BMNH

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

MNHN

France, Paris, Museum National d'Histoire Naturelle

MRAC

Belgium, Tervuren, Musee Royal de l'Afrique Centrale

AMNH

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

NHMW

Austria, Wien, Naturhistorisches Museum Wien

CAS

USA, California, San Francisco, California Academy of Sciences

RMNH

Netherlands, Leiden, Nationaal Natuurhistorische Museum ("Naturalis") [formerly Rijksmuseum van Natuurlijke Historie]

USNM

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

ZMB

Museum für Naturkunde Berlin (Zoological Collections)

MRAC

Musée Royal de l’Afrique Centrale

AMNH

American Museum of Natural History

NHMW

Naturhistorisches Museum, Wien

CAS

California Academy of Sciences

RMNH

National Museum of Natural History, Naturalis

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Vespidae

Genus

Sphex

Loc

Sphex incomptus Gerstaecker, 1871

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

Chlorion nyanzae R. Turner, 1918: 358

Arnold G. 1928: 368
Turner R. E. 1918: 358
1918
Loc

Sphex incomptus

Gerstaecker A. 1871: 352
1871