Phytomia erratica (Bezzi)

Meyer, Marc De, Goergen, Georg & Jordaens, Kurt, 2020, Taxonomic revision of the Afrotropical Phytomia Guérin-Méneville (Diptera: Syrphidae), Zootaxa 4803 (2), pp. 201-250 : 232-233

publication ID

https://doi.org/ 10.11646/zootaxa.4803.2.1

publication LSID

lsid:zoobank.org:pub:0C0F5754-9530-4072-AF45-BDFE4A8A2B57

persistent identifier

https://treatment.plazi.org/id/03F94D2C-FFA8-FFD7-0EAD-3599FC51FABD

treatment provided by

Plazi

scientific name

Phytomia erratica (Bezzi)
status

 

Phytomia erratica (Bezzi) View in CoL

( Figs 13 View FIGURES 11–20 , 53 View FIGURES 49–60 , 75 View FIGURES 73–84 , 96 View FIGURES 85–100 )

Megaspis erratica Bezzi, 1912: 424 View in CoL

Material examined. SYNTYPES: GUINEA-BISSAU, 2♂, Bolama, June–December 1899, L. Fea ( MCSNG) ; MADAGASCAR, 1♀, Betsileo ( BMNH) . Possible syntype: MALAWI, 1♂, Zomba, H.S. Stannus ( BMNH) (see Comments below) . The male specimen from Bolama , with additional printed label “Typus” and handwritten label by Bezzi ‘ Megaspis erratica n.sp. ’ is hereby designated as lectotype and labelled accordingly . Other material: AN- GOLA, 1♀, 30km NE Duque de Braganza [= Kalandula], November–December 1957 ( CNC) . BENIN, 1♂, Calavi IITA, 1.XII.2000, G. Goergen ( IITA) ; 1♀, Cotonou , January 2003, G. Goergen ( IITA) . BURUNDI, 1♂, Rutana, colline Kiofi Moso , 10.XI.1951, F. François ( KBIN) . CAMEROON, 1♂, West Cameroon , 1939, Villiers & Paulian ( MNHN) . CONGO (DR), 1♀, Bambesa , February 1934, H.J. Brédo ( KMMA) ; 1♂, Bomokandi , 26.XI–6.XII.1925, Prince Leopold ( KMMA) ; Elisabethville [= Lubumbashi] , 1♂, 23.V.1920, M. Bequaert ( BMNH) ; 3♂ 1♀, May 1920 – April 1923 (different dates), M. Bequaert ( KMMA) ; Faradje, Uele , November 1912, Lang & Chapin , 1♀ ( AMNH) ; 2♂ ( KMMA) ; Garamba, Uele, June–July 1912, Lang & Chapin 1♂ 1♀ ( AMNH) ; 2♂ 1♀ ( KMMA) ; July 1912, Lang & Chapin, 1♂ 1♀ ( AMNH) ; 3♂ 2♀ ( KMMA) ; 4♂, Kasenyi, Lake Albert, May–December 1935 (differ- ent dates), H.J. Brédo ( KMMA) ; 1♂ 1♀, Kasonsero , 17.VII.1914, J. Bequaert ( KMMA) ; 1♂, Motenge-Bma , Uban- gi, 14.XII.1931, H.J. Brédo ( KMMA) ; 1♂, Parc National Garamba, II /gc/8, 10.VII.1952, H. De Saeger ( KMMA) ; 1♀, Wombali , July 1913, P. Vanderijst ( KMMA) . KENYA, 1♂, Makueni, May 1947, V.G.L. van Someren ( CNC) ; Marsabit, 1♀, 25.IX.1911, B.J. Stordy ; 1♂, 30.IX.1911, G. Chell (both BMNH) ; 2♀, near Marsabit, October 1911, C.A. Neave ( BMNH) ; 1♂, Marsabit Lake , 4.X.1911, G. Chell ( BMNH) ; 1♀, pool nr S.S. Camp, 20.VII.1911, G. Pugh ( BMNH) . MADAGASCAR, 1♂, Ambodivoangy , August 1961, J. Vadon ( KMMA) ; 2♀, Ampitavananima Forest , Fianarantsoa, 17–24.III.2007, M. Irwin et al. ( CAS) ; 1♀, Fampanambo , March 1961, J. Vadon ( KMMA) ; 2♂ 6♀, Fizono , September 1959, J. Vadon ( KMMA) ; 1♀, Fort Dauphin [=Tôlanaro], Mandena , 14–18.IV.1968, K.M.G. & P.D. ( BMNH) ; 1♀, Lac Froid , 11–15.XII.1957, B. Stuckenberg ( NMSA) ; 1♀, Mailaka , January 1952, N.L.H. Krauss ( BMNH) ; 1♂, Mandritsara , Wulsin ( CNC) ; 1♂, route d’Anosibe , 13–21.XII.1957, B. Stuckenberg ( NMSA) ; 1♀, Maroantsetra, J. Vadon ( MNHN) ; 2♂, Tananarive [= Antananarivo], 28–30.I.1968, K.M. Guichard ( BMNH) . MALAWI, 1♀, 30km NW Dedza, 15.III.1987, J.G.H. & A. Londt ( NMSA) . MOZAMBIQUE, Luabo, June–July 1957, U. Stuckenberg , 1♀ ( CNC) ; 1♂ ( NMSA) . SOUTH AFRICA, 1♀, Durban , 24.IV.1908, G.F Leigh ( NMSA) ; 1♂, Mazithi Dam, Kruger Park , 6.I.1974 ; 1♀, Nwamuriwa Mt, Kruger Park , 6.I.1974 ; 1♂ 2♀, Pundo Milla, Kruger Park , 11.I.1974, all B.&P. Stuckenberg ( NMSA) ; 1♂, Ngoye Forest, Natal , May 1979, P. Reavell ( NMSA) . SUDAN, 1♀, Yali , 7.V.1954, S. V.S. ( BMNH) . TANZANIA, 1♂, Tarangire Nat. Park , December 1994, D. Grimaldi ( AMNH) ; 1♂, Ukerewe Island , F. Conrads ( NMK) . UGANDA, Bwamba Valley , May 1954, V.G.L. van Someren , 1♂ 1♀ ( CNC) ; 1♀ ( BMNH) ; Entebbe , 2♂, 25–28.I. 1973, H. Falke ( CNC) ; 1♀, February 1912, C.A. Wiggins ( BMNH) ; 1♂, nr Entebbe , 23–31.I.1973, H. Falke ( CNC) ; 1♀, Mabamba Swamps, Wakiso District, Nan- subuga Hill , 16.XII.2018, K. Jordaens ( KMMA) . ZAMBIA: 1♀, Up. Luangwa Valley , 5–7.III.1908, S.A. Neave ( OXUM) . ZIMBABWE, 1♂, Wedea , 7.IV.1985 ( NMSA) .

Body size. Body length (n=10): 10.8–14.0 mm. Wing length (n=10): 7.9–10.6 mm.

Redescription. MALE ( Fig. 13 View FIGURES 11–20 ). Head. Eye bare; holoptic, touching for 2–3 times length of ocellar triangle, facets enlarged in dorsal half. Frons pale yellowish; with yellow-white pollinosity; dispersed pilosity of medium long pale pile; rugose area shining yellow-white, occupying at least half of entire width and three-fourths of entire height; with shorter dispersed pale pile. Face ground colour pale yellow, oral margin slightly darker yellow; with dense whitish pollinosity, pilosity of short pale pile; facial tubercle hardly discernible. Gena yellow, largely weakly shining, dispersed white pollinosity only in posterior part; with long pale pilosity. Occiput dorsal third black, with greyish pollinosity; ventrally more densely yellow-white, with dispersed pale pile. Antennal segments brown to black-brown; arista yellow-brown, bare.

Thorax. Scutum and scutellum black-brown ground colour, scutum with greyish to greyish brown pollinosity, except in medial part where weakly shining black-brown, scutellum more dark reddish brown; covered with dense pile of long pale yellowish pilosity, along lateral margins of scutum more whitish. Pleural sclerites ground colour

black, with greyish brown pollinosity; covered with dispersed pile of long white pile except meron, anterior part of katepisternum and anterior anepisternum.

Legs. Yellow-orange to brown. Fore leg, femur brown, apical margin paler; with dense short mixed pale and dark pilosity, anteriorly and posteriorly longer, anterior pile predominantly dark; tibia pale in basal half, otherwise brownish; with short black pilosity, except in basal half where pale; tarsal segments brownish. Mid leg as in fore leg, except tibia pale for basal half, apically yellow-orange; pilosity pale over entire length; tarsal segments orangebrown. Hind leg, femur yellow-orange and with long pale pilosity in basal half, apically black-brown except for pale apex, with long black pilosity; tibia orange-brown to brown, pale in basal two-fifths; dorsally with short to medium long pale pilosity except apical fifth where dark, ventrally with short to medium-long black pilosity; tarsal segments brownish.

Wing ( Fig. 53 View FIGURES 49–60 ). Mainly hyaline, base to variable extent darker yellow, sometimes reaching to basal half of wing. Calypters dark yellowish and with fringe of yellowish pile.

Abdomen ( Fig. 75 View FIGURES 73–84 ). Mainly yellow to yellow-range, with variable darker markings. Terga 2–4 to with shining medial bulla; pilosity with dispersed short to medium long pale pile, longer along margins. Tergum 2 with anterior half of bulla black-brown, posterior margin darker yellow-brown to brown. Tergum 3 marking more extensively and darker, posterior fascia broadening medially, covering bulla and sometimes reaching anterior margin. Tergum 4 predominantly brown to black except along anterior margin where narrowly yellow-brown, more so anterolaterally. Sterna pale yellow, with widely dispersed long pale pile. Male genitalia as in Fig. 96 View FIGURES 85–100 .

FEMALE. As male except for the following character states. Eye, facets of equal size; dichoptic. Frons pale yellowish except in medial part where dark; with yellow-white pollinosity, except in dorsal third where brown; covered with short dispersed pale pile, except in dorsal third where predominantly black; rugose area shining brown; occupying one-third of entire width and equal in height to 2–3 times length of ocellar triangle. Legs, mid femur with pilosity sometimes more extensively pale. Abdomen, usually dark marking more extensively and darker brown to black.

Distribution. Angola, Benin, Burundi, Cameroon, Congo (DR), Guinea-Bissau, Kenya, Madagascar, Malawi, Mozambique, South Africa, Sudan, Tanzania, Uganda, Zambia, Zimbabwe.

Comments. Bezzi (1912) described the male but in his list of material examined he mentions “ Guinea portoghese: Bolama, giugno–dicembre 1899, tre maschi; nel British Museum si trova del Nyasa e di Madagascar, anche la femmina”. He subsequently described the female in his treaty on Syrphidae from the BMNH ( Bezzi 1915) and lists it as “type of [female symbol]” Betsileo, Madagascar. In the additional specimens he lists a male from Zomba, Nyasaland (Dr. H.S. Stannus). In the BMNH collection there is a single male specimen from Zomba that correspond to the above description. It is not labelled as syntype but as it is mentioned in the original description by Bezzi (1912), it should also be included in the original type series. In order to avoid confusion and to assure stability, a male specimen from the series of Bolama is herewith designated as lectotype.

CNC

Canadian National Collection of Insects, Arachnids, and Nematodes

IITA

International Institute of Tropical Agriculture

MNHN

Museum National d'Histoire Naturelle

KMMA

Koninklijk Museum voor Midden Afrika

AMNH

American Museum of Natural History

CAS

California Academy of Sciences

NMSA

KwaZulu-Natal Museum

NMK

National Museums of Kenya

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Syrphidae

Genus

Phytomia

Loc

Phytomia erratica (Bezzi)

Meyer, Marc De, Goergen, Georg & Jordaens, Kurt 2020
2020
Loc

Megaspis erratica

Bezzi, M. 1912: 424
1912
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