Biologia, Bratislava, 61/2: 159—160, 2006 Section Zoology DOI: 10.2478/s11756-006-0025-9
Two new species of Pselaphia (Diptera, Chloropidae) from Zambia Štěpán Kubík Department of Zoology and Fishery, Faculty of Agrobiology, Food and Natural Resources, Czech University of Agriculture, CZ-16521 Prague 6 – Suchdol, Czech Republic; e-mail:
[email protected]
Abstract: Pselaphia haladai sp. n. and Pselaphia zambiensis sp. n. are described from Zambia. All African Pselaphia species are keyed and main differential characters are illustrated. Key words: Pselaphia, Chloropidae, Diptera, key, Zambia.
Introduction Pselaphia Becker, 1911 is a small genus of the family Chloropidae (Diptera). Only three species are known in the world fauna. The genus was described by Becker (1911) from the Oriental region (Pselaphia macrocera). Two additional species are known from the Afrotropical region. The first species, Pselaphia cornifera, was described by Becker (1912) and the second species, Pselaphia flava, was added by Sabrosky (1957) from Cape Verde Islands. I have found two additional new Afrotropical species in the material of Chloropidae collected by J. Halada in Zambia.
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Figs 1–3. Antennae, inner side: 1 – Pselaphia haladai sp. n.; 2 – Pselaphia zambiensis sp. n.; 3 – Pselaphia cornifera Becker. Scale 0.1 mm.
Pselaphia haladai sp. n. Body length. 1.5 mm Description. Male. Head: higher than long, yellow, occiput partly dark. Gena short, moderately broad, about half as broad as third antennal segment, with two rows of pale hairs below, vibrissal bristle short, yellow. Frons broader than long, dusted, yellow, with numerous dark frontal bristle. Head bristles short and dark. Hind margin of frontal triangle ľ as broad as frons, with somewhat convex lateral margins reaching middle of frons, yellow, black only in ocellar area, dusted, postvertical bristle as long as ocellar bristle, inner vertical bristle smaller, outer vertical bristle as long as postvertical bristle, 8 strong orbital bristle. palpi short and yellow. Second antennal segment yellow with brown margin, third antennal segment nearly 1.5 times as long as broad, rounded, in basal half yellow (Fig. 1), arista dark with short pubescence. Thorax yellow with three broad brown stripes on mesonotum, median stripe continuing broadly to apex of scutellum. Mesonotum and scutellum grey pruinose. Pleura shining yellow, mesopleuron with brown mar-
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Figs 4, 5. Male genitalia of Pselaphia haladai sp. n.: 4 – epandrium, posterior view; 5 – hypandrium, ventral view. Scale 0.1 mm.
gin, 1+2 notopleural bristle, apical scutellar bristle black and longer than scutellum, 2 shorter black lateral scutellar bristle. Legs brownish-yellow. Wings of usual oscinellinae-type. Halteres whitishyellow. Abdomen brown, dusted, with short hairs. Epandrium as in Fig. 4 and hypandrium as in Fig. 5. Material examined. Holotype (male): SW Zambia, 100
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Š. Kubík
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Material examined. Holotype (female): SW Zambia, 100 km NE Livingstone, 26.VII.2002, leg. Halada. Paratype: 1 , same locality and date as holotype. Type material is deposited in the collections of the Czech University of Agriculture, Prague.
Derivatio nominis. Named after the state of Zambia.
Fig. 6. Male genitalia of Pselaphia cornifera Becker, epandrium, posterior view. Scale 0.1 mm.
km NE Livingstone, 26.VII.2002, leg. J. Halada. Paratype: 1 , the same locality and date as holotype. Type material is deposited in the collections of the Czech University of Agriculture, Prague.
Derivatio nominis. Named in honour of J. Halada, a collector of the types.
Pselaphia zambiensis sp. n. Body length. 1.7 mm Description. Female. Head higher than long, dark, frons brown, occiput black. Gena yellow, short, moderately broad, about half as broad as third antennal segment, with two rows of pale hairs below, vibrissal bristle short, yellow. Frons broader than long, dusted, brown, with numerous yellow frontal bristle. Head bristles short and dark. Hind margin of frontal triangle 3/4 as broad as frons, with somewhat convex lateral margins reaching middle of frons, black, grey pruinose, postvertical bristle as long as ocellar bristle, outher vertical bristle strong, inner vertical bristle smaller, 8 orbital bristle. palpi short and black. Antennae black. Second antennal segment black, grey pruinose, third antennal segment nearly 2 times as long as broad, rounded, in basal part with yellow oval spot (Fig. 2), arista dark with short pubescence. Thorax black, mesonotum bluish-grey pruinose Pleura black, notopleuron with yellow spot, mesopleuron and pteropleuron grey pruinose, under side shining, sternopleuron shining black with brownish-yellow upper margin, 1+2 notopleural bristle, apical scutellar bristle black and longer than scutellum, 2 shorter black lateral scutellar bristle. Legs brownish-black, knees and tarsal segments yellow. Wings of usual oscinellinae-type. Halteres white with brown stem. Abdomen yellowish-brown, dusted, with short hairs.
Other examined material. Pselaphia cornifera Becker, 1912: SW Zambia, 100 km NE Livingstone, 26.VII.2002, 2 and 3 , leg. Halada. W??? Zambia, 45 km SE Kitwe, 12–15.I. 2003; 2 , leg Halada. First record from Zambia.
The key to African species of Pselaphia Becker, 1911 1 Third antennal segment 2–2.5 times as long as broad (Figs 2, 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – Third antennal segment 1.5 times as long as broad (Fig. 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Mesonotum black, bluish-grey pruinose, frons brown, frontal triangle black and pruinose, palpi dark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. zambiensis sp. n. – Mesonotum yellow with three broad black stripes, pruinose, frons yellow, frontal triangle yellowishbrown and pruinose, palpi yellow, male genitalia as in Fig. 6. . . . . . . . . . . . . . . .P. cornifera Becker, 1912 3 Three broad black mesonotal stripes, elongate-oval black mesopleural spot, sternopleuron black dorsally, frontal triangle brown, grey pruinose, all hairs and bristles whitish-yellow (Cape Verde Is) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. flava Sabrosky, 1957 – Three yellowish-brown mesonotal stripes, mesopleuron and sternopleuron yellow with narrow brown margin, frontal triangle yellow, grey pruinose, all hairs and bristles brown . . . . . . . . . . . . . . . P. haladai sp. n. Acknowledgements This paper was supported by IRO MSM 6046070901. I thank Prof. M. BARTÁK for language corrections and valuable comments.
References BECKER, T. 1911. Chloropidae. Eine monographische Studie. III. Die indoaustralische Region. Ann. Mus. Nat. Hung. 9: 35– 170. BECKER, T. 1912. Eine monographische Studie. IV. Nearktische Region., V. Neotropische Region. Nachtrag I. Palaearktische Region, II. Aetiopische Region. Ann. Hist. Mus. Nat. Hung. 10: 21–256. SABROSKY, C. W. 1957. Chloropidae (Diptera) of Cape Verde Islands. Commentat Biol. 16 (9): 1–10.
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Received June 27, 2005 Accepted December 13, 2005
