Euscelidia procula ( Walker, 1849 )

Dikow, Torsten, 2003, Revision of the genus Euscelidia Westwood, 1850 (Diptera: Asilidae: Leptogastrinae), African Invertebrates 44 (2), pp. 1-131 : 97-101

Euscelidia procula ( Walker, 1849)

Figs 56, 57A–D

Leptogaster proculus Walker, 1849: 482 ; Hull 1962: 300.

Euscelidia procula, Hermann 1926: 147 ; Engel 1929: 154; Janssens 1955: 304; Oldroyd 1974: 20 1980:

357.

Leptogaster stigmaticalis Loew, 1852: 658 1858: 352 1860: 100; Speiser 1910: 82; Hull 1962: 300. syn. n. Euscelidia proculus var. melanostoma Janssens, 1953: 6 ; Oldroyd 1980: 357. unavailable name Euscelidia oldroydi Lindner, 1955: 28 ; Oldroyd 1980: 357. syn. n.

Diagnosis: The species is distinguished from congeners by the orange to red antero-lateral margins of the sct, predominantly apruinose sct, and the few microtrichia and brown staining of the wings.

Redescription: Head: Black; fc silver pruinose, fc gib indistinct, mystax white, many macrosetae; oc tr apruinose; occ silver pruinose, setae white; Antennae - scp brown,

setae brown; ped brown, setae brown; pped light brown, white pruinose dorsally in proximal half; apsel dark brown; Thorax: Orange-red to black; sct predominantly orange-red, 3 longitudinal stripes, median stripe divided anteriorly and not reaching posterior margin, lateral stripes originating medially, reaching posterior margin, black, stripes often fused in posterior half, lateral and posterior margins white pruinose, short white setae scattered on anterior, lateral, and posterior margins, macrosetae: white or black, 1 npl s, 1 spal s, sometimes 1 pal s; sctl silver pruinose, ds sctl s and sctl s long, white; Legs - yellow to brown; pro and meso fem light brown, meta fem yellow proximally, clubbed, club brown, setae white; tib brown, yellow stripe not reaching tip anteriorly; emp distinct, very short; Wings - hyaline, brown stained, especially in anterior half; ptero distinct, brown; cell d terminating in 2 veins; hlt light brown; Abdomen: Brown to black; T grey pruinose, T2 apruinose, T1 with black setae, T2 with few white setae laterally, S grey pruinose, S1–3 apruinose; ơ terminalia Figs 57A–D - sur not particularly pointed distally, lobe ventrally, small lobe dorsally; hypd ventral margin straight; d aed shea tubular, medium length; lat apod bifurcated.

Type material - The lectotype of undeterminable gender of Leptogaster proculus , here designated to preserve stability and make more universal the use of this name, is labelled

A B C

D E

F G H

‘Type (circular label with green submarginal border) / Sierra Leone (handwritten) Presented by the Rev. D.F. Morgan (on backside) / Sierra Leone. Pres. by Rev. D.F. Morgan (handwritten) / HOLOTYPE Leptogaster proculus Walker det. J.E. CHAINEY 1982 (handwritten) Holotype (circular label with red border, attached to the other label) / LECTOTYPE Leptogaster proculus Walker, 1849 by T. Dikow 2001 (red label)’. The specimen is double mounted (minuten in rectangular piece of plastic), is in good condition (met legs broken, abdomen broken from the third segment), and is deposited in the BMNH.

The ơ lectotype of Leptogaster stigmaticalis , here designated to preserve stability, is labelled ‘ Mozambique Inhambana Peters S. (blue label) / Type (red label) / LECTOTYPE Leptogaster stigmaticalis Loew, 1852 by T. Dikow 2001 (red label)’. The specimen is directly mounted, is in good condition (sct cracked; ơ terminalia attached to specimens pin in micro vial), and is deposited in the ZMHB. The ^ paralectotype is labelled ‘ Mozambique Inhambana Peters S. (blue label) / [small violet square] / Coll. H. Loew / Type (red label) / PARALECTOTYPE Leptogaster stigmaticalis Loew, 1852 by T. Dikow 2001 (yellow label)’.The specimen is directly mounted, is in very good condition, and is deposited in the ZMHB.The ^ paralectotype is labelled ‘ Mozambique Inhambana Peters S. (blue label) / Type (red label) / PARALECTOTYPE Leptogaster stigmaticalis Loew, 1852 by T. Dikow 2001 (yellow label)’. The specimen is directly mounted, is in good condition (right wing broken), and is deposited in the ZMHB. The ơ paralectotype is labelled ‘ Mozambique Inhambana Peters S. (blue label) / 640 / Type (red label) / PARALECTOTYPE Leptogaster stigmaticalis Loew, 1852 by T. Dikow 2001 (yellow label)’. The specimen is directly mounted, is in good condition (left antenna broken), and is deposited in the ZMHB.

The ơ holotype of Euscelidia oldroydi is labelled ‘Msingi 9.VI.–17.VI.1952 [9– 17.vi.1952] D. O. Afrika Exp. [Deutsch Ost-Afrika Expedition] (blue label) / Typus Lindner 1954 (handwritten in red ink; white label with black submarginal border) / Euscelidia oldroydi Lind. Lindner det. (handwritten except for ‘Lindner det.’; black submarginal border)’. The specimen is directly mounted, is in very good condition, and is deposited in the SMNS. The ^ paratype is labelled ‘Mugango a. [am] Victoria See 19.–25.III.1952 D. O. Afrika Exp. (blue label) / Mugango 19.III.52 / Euscelidia oldroydi Lind. Lindner det. / (handwritten except for ‘Lindner det.’) / ParaTypus Lindner 1954 (handwritten in red ink; label with black submarginal border)’. The specimen is directly mounted, is in very good condition, and is deposited in SMNS.

Type locality and distribution (Fig. 56): Sierra Leone , no exact locality. Angola, Botswana, Burundi, Cameroon, DR Congo, The Gambia, Ghana, Guinea, Kenya, Liberia, Malawi, Mozambique, Namibia, Nigeria, Sierra Leone, South Africa, Tanzania, Togo, Uganda, Zimbabwe.

Material examined: ANGOLA: 1ơ Salazar , 9 18'S 14 54'E, 9–15.iii.1972 ; 1ơ Gabela , 10 50'S 14 21'E, 16–18.iii.1972 ; 1^ Rocadas , 16 00'S 15 10'E, 19– 22.ii.1972 ; BURUNDI: 1ơ Bugoma Forest , 2 19'S 30 24'E 1–5.xii.1911 ; 1^ 1ơ Ruyigi, 3 28'S 30 14'E, v.1956 , 1^ Rutana, 3 55'S 29 59'E, 19.vi.1952 ; 1^ 1ơ Bururi, 3 56'S 29 36'E, 7.iii.1953 ; 1^ 4ơơ Rumonge , 3 58'S 29 26'E, vi.1948, 22.i.1950, 19.v.1952 ; 1^ Makamba, 4 07'S 29 47'E, 25.vi.1949 ; CAMEROON: 1ơ Bossoum , 9 56'N 13 41'E, 1–10.v.1914 ; 1ơ Bamenda , 5 57'N 10 08'E, 7.xii.1937 ; 1ơ Bali-Batibo , 5 53'N 10 00'E, 20.xi.1987 ; DR CONGO: 2? Bambesa , 3 27'N 25 41'E, 25.ix.1933, v.1937 ; 1^ Kisangani , 0 13'N 25 11'E, 10.ii.1928 ; 1^ 1? Eala , 0 04N 18 17'E, xii.1935, ii.1936 ; 1ơ Lwiro , 2 13'S 28 47'E, xi.– xii.1966 ; 1^ Lualaba River , 6 02'S 26 51'E, 25.iv.1907 ; 1? Sankuru , 6 44'S 23 56'E, 4.vi.1960 ; 1? Upemba National Park, Lusinga , 8 55'S 27 11'E, 2–4.v.1949 ; 1ơ Kambove , 10 51'S 26 35'E, 2.iv.1907 ; THE GAMBIA: 1^ Kiang West National Park , 13 23'N 15 55'W, 16.x.1999 ; 1^ 1ơ Tendaba , 13 26'N 15 49'W, 1.x.1987 ; 1^ 1ơ Keneba , 13 20'N 16 01'W, 22.vii.1971, 13.ix.1971 ; 1ơ Gunjur , 13 12'N 16 44'W, 13.xi.1977 ; GHANA: 1? Ejura , 7 22'N 1 22'W, 1.xi.1952 ; 1? Accra , 5 33'N 0 22'W, 13.vii.1941 ; GUINEA: 2^^ 1ơ N'Zerekore , 7 44'N 8 49'W, 21.iv.1950 ; 1^ 1ơ no exact locality; KENYA: 1ơ Matembur, 1 22'N 35 03'E, 26– 27.v.1980 ; 1^ Uasin Gishu, 0 22'N 35 30'E, 25.xi.1992 ; 1^ Kakamega Forest , 0 16'N 34 44'E, 9.x.1975 ; 2^^ Malaba Forest , 0 28'N 34 51'E, 10.x.1975 ; 1? Mogorro River , 0 59'S 34 15'E, v.1913 ; 1^ 1ơ Kuja Valley , 0 48'S 34 34'E, 30.iv.– 1.v.1911 ; 1ơ Gelegele River , 0 53'S 35 02'E, vi.1913 ; 1^ Nairobi , 1 16'S 36 46'E, v.1928 ; 1^ Olkejuado , 1 25'S 36 37'E, 18.xi.1992 ; 1ơ Kajiado, 2 11'S 37 41'E, 30.xi.1992 ; 3^^ Kibwezi , 2 24'S 37 57'E, 2–4.iv.1911 ; 1^ 1? Mombasa, 4 02'S 39 40'E, 19.vi.1962, 21.xi.1994 ; 1^ Kwall Forest , 4 03'S 39 40'E, 1.vi.1948 ; 2^^ 1? Muhaka forest , 4 14'S 39 25'E, 13.xi.1992 ; 1^ 1ơ Godoni forest , 4 19'S 39 25'E, 19.viii.1975 ; 2^ 1ơ 1? Kwale Forest , 4 10'S 39 26'E, 18.vi.1962, 13.v.1963 ; 1ơ Raimosi , v.1922 ; LIBERIA: 1^ Banga , 7 16'N 10 03'W, x.1926 ; MALAWI: 1ơ 1? Bwamba , 14 00'S 33 44'E, 7.viii.1946 ; 3^^ 3ơơ Mangochi, 1435AC, 11.iii.1987 ; 4^^ 3ơơ 1? Zomba Plateau , 1535AD, 24–27.xi.1980 ; 32^^ 11ơơ 47?? Mulanje, 15 57'S 35 37'E, 5, 20, 23 Jan, 30.xi.1912 , several days during xii.1912, several days during i.1913, 3, 5, 8, 26, 28.ii.1913, 10, 11, 16, 22, 31.xii.1913, 28–30.xi.1980; MOZAMBIQUE: 3^^ Angoche , 16 13'S 39 54'E, 19.iii.1982 ; 1^ Luabo , 18 23'S 36 06'E, vi.–vii.1957 ; 4^^ Amatonga forest , 19 10'S 33 44'E, 15.ii.1964, 25.vi.1964, 26.iv.1965 ; 6^ 4ơơ 4?? Maputo, 25 57'S 32 34'E, i.–iii.1914, iv.–vii.1914 ; 1^ 3ơơ Delagobai , 26 13'S 32 45'E; 1^ Goba [several such localities], 19.iii.1980 ; 4^^ 4ơơ Massinga [several such localities], 5–10.iv.1964 ; NAMIBIA: 1^ Rundu , 17 55'S 19 45'E, 28.i.1993 ; 1^ Mahango Game Reserve , 18 08'S 21 41'E, 1–5.iii.1994 ; 1^ Grootfontein , 19 33'S 18 05'E, 5.iv.1972 ; 1^ Swakopmund , 22 40'S 14 31'E; NIGERIA: 1ơ Lagos, 6 27'N 3 23'E, 8.ii.1946 ; SIERRA LEONE: 1^ Kabala , 9 35'N 11 35'W, 28.xi.1993 ; SOUTH AFRICA: Gauteng Prov: 1^ 1ơ Pretoria , 25 44'S 28 11'E, 30.i.1915, 16.i.1921 ; KwaZulu-Natal: 1^ Ndumu Game Reserve , 2632CC, 26.x.1972 ; 8^^ 5ơơ Kosi Bay Nature Reserve , 2632DD, 30.xi.–2.xii.1982 ; 2ơơ eManguzi, 2632DD, 4.iv.1982; 3^^ 2ơơ Jozini Dam , 2732AC, 20.ii.1979, 3.xii.1982 ; 1^ False Bay Park Reserve , 27 58'S 32 22'E, 23–24.iv.1988 ; 1^ 3ơơ Sodwana Bay , 27 35'S 32 40'S, 5.iii.1987, 30.i.–1.i.1994 ; 1ơ Kube Yini Game Reserve , 27 48'S 32 14'E, 10–14.i.1994 ; 1^ Goundhoek , 28 23'S 31 05'E, 24.ii.1990 ; 2^^ 2ơơ 1? St. Lucia Nature Reserve , 2832AD, 18–20.xii.1981 ; 2^^ 1ơ Dukuduku Forest Reserve , 2832AD, 26.xi.1971, 18–19.vii.1981 ; Mpumalanga: 3^^ 4ơơ Loskopdam Nature Reserve area , 2529AD, 24.i.1978 ; 1^ Gladdespruit river , 2530DB, 23.ii.1971 ; 1^ 1ơ Pretoriuskop , 25 09'S 31 15'E, i.1952, 6–7.iv.1952 ; Northern Prov: 1? Platjan Limpopo river, 2228DA, 26.i.1978 ; 1^ Blouberg , 2229CC, 25.i.1978 ; 1^ 1ơ Villa Nora, 2328CA , 31.i.1978; 1ơ Hans Merensky National Reserve , 23 42'S 30 44'E, 23–25.i.1987 ; 1^ 1? Modjadji Nature Reserve , 23 38'S 30 20'E, 13–14.i.1987 ; 1^ Wyllie’s Poort , 22 53'S 29 55'E, 21–24.i.1988 ; 2^^ Marico , 24 13'S 26 54'E, i.1921 ; 1ơ Bulge river , 2427BA, 30.i.1978 ; 1^ 1ơ Rooiberg , 2427DA, 1.ii.1978 ; 1^ Sterkrivier , 2428BA, 31.i.1978 ; 2^^ 1ơ Hangklip , 2428BB, 31.i.1978 ; 1^ Warmbad , 2428CC, 1.ii.1978 ; 1ơ Nyl Rivier , 2428CD, 29–31.i.1978 ; 1^ Vaalwater , 2429AB, 30.ii.1980 ; 2^^ 4ơơ Potgietersrus , 2429AA, 24+ 28.i.1978 ; 1ơ Ofcolaco , 2430AB, 21–26.ii.1980 ; 2^^ Malta forest , 15 km W Ofcolaco, 21.ii.1980 ; 4^^ 1ơ Blyde river canyon, 2430DB, 26–27.ii.1980 ; 1^ Northam , 2527AB, 2.ii.1978 ; 1^ Zoutpan [several such localities], 4–10.ii.1929 ; North-West Prov: 1ơ Sonop , 2527DA, 2.ii.1978 ; 1^ Kangwane Reserve , 16.i.1992 ; TANZANIA: 1^ 1? Kibweziw , 03 21'S 36 44'E, ii.1929 ; 1^ Kibongoto , 3 10'S 37 05'E, 7.v.; 1ơ Bagamoy, 5 15'S 38 40'E, iii.1893 ; 1? Bondei , 5 54'S 39 14'E, i.1886 ; 1^ Mazizini , 6 11'S 39 12'E, Zanzibar, 8.iii.1983 ; 3^^ Magagoni , 7 13'S 37 58'E, 18.vi.1962 ; 1ơ Mkulumuzi, 10 46'S 35 32'E, 1951; 1^ Ruo Valley , 10 13'S 39 34'E, 7.iii.1913 ; 1ơ Morogoro [several such localities], 15.i.1917 ; 1^ Mikindani [several such localities], 1897; 1^ Salaum, 26.x.1898 ; 1ơ 1? Langenburg, Nyassa See , end.ii.–beginning.iii., 9– 19.viii.1898 ; 3^^ 2?? no locality data; TOGO: 1^ Bismarckburg, 8 11'N 0 41'E, 15–22.v.1893 ; UGANDA: 1ơ Ngora, 2 06'N 33 26'E, 15–16.xi.1948 ; 1^ Semliki Plains, Lake Albert , 1 03'N 30 37'E, 25–27.xi.1911 ; 1^ Fort Portal , 0 40'N 30 16'E, 20.x.1926 ; 5ơơ Ankole Kichwamba , 0 43'N 30 11'E, 23–29.iv.1968, 1–5.v.1968 ; 1^ Mubende, 0 35'N 31 22'E, 20.iv.1966 ; 1^ 1? Kampala, 0 19'N 32 34'E, 26.xi.1917, 12.vi.1922 ; 2^^ Entebbe , 0 03'N 32 27'E, 12–20.ii.1912 ; 1^ Lake George , 0 01'N 30 12'E, 17–19.x.1911 ; ZIMBABWE: 2^^ Victoria Falls , 17 55'S 25 50'E, 3.i.1920, xii.1938 ; 1? Umtali District , 18 57'S 32 40'E, 24.i.1932 ; 1^ Sawmills , 19 35'S 28 01'E, 28.xii.1919 ; 1^ 5ơơ 1? Matopos National Park , 2028AD, i.1977 ; 1ơ 1? Bulawayo, 20 10'S 28 34'E, 20.ii.1921 ; 1? Lundi , 20 54'S 30 46'E, 13–16.iii.1964 ; COUNTRY UNKNOWN: 1ơ Upper Luangwa River , 27.vii.–13.viii.1910 ; 2^ 1ơ no locality data. Depository: BMNH, Coll. Dikow, Coll. Geller-Grimm, CUIC, ISNB, MZLU, NMSA, USNM, ZMHB, ZMUC .

Remarks: This species is widely distributed on the African continent (Fig. 56) ranging from South Africa in the south to Kenya in the northeast and The Gambia in the northwest. Variation is evident in the colour of the sct, which is sometimes entirely black or only with 2 small antero-lateral red spots, or shows the characteristic pattern with the antero-lateral margin entirely orange and the remaining part black. Furthermore, the wings are sometimes entirely brown stained. The lectotype of Leptogaster proculus has apparently a black mystax and the anteriorly directing setae on the anepst are brown. I have seen these features only in three specimens and therefore, consider it not to be important for the diagnosis of the species. Janssens (1953: 6), however, described E. procula var. melanostoma from a single female specimen referring to the black mystax. Janssens did not consult the original description and did not examine the lectotype. Walker (1849: 482) explicitly referred to the black colour ‘…clypeus armed with short black bristles’. He stated unambiguously that var. melanostoma refers to an infrasubspecific entity and because the name was never adopted as valid for a species or subspecies the name melanostoma is unavailable referring to the International Code of Zoological Nomenclature (4th edition, Article 45.6.4. and 45.6.4.1.).

Figures

Fig. 57. ơ terminalia. A–D. Euscelidia procula. A. Dorsal. B. Ventral. C. Lateral. D. Aedeagus lateral. E– H. E. prolata sp. n. E. Aedeagus lateral. F. Dorsal. G. Ventral. H. Lateral. Scale line = 1 mm.