taxonID	type	description	language	source
956BD905FFEDC90BFE61FBD1FE2AF948.taxon	description	There is a clear taxonomic distinction between the New World genus Henicomyia Coquillett and the Old World genera of Xestomyzinae. Henicomyia has setulae on vein R 1, while all other Xestomyzinae lack these setulae. Lyneborg (1972) stated that the genera Xestomyza Wiedemann, Braunsophila Kröber and Ceratosathe Lyneborg form a monophyletic group, these being characterised by: proboscis longer than head; broad gena; frons possessing numerous setae; and more than three pairs of dorsocentral macrosetae. The relationship between this informal group and the other genera of Xestomyzinae remains unclear.	en	Hauser, Martin (2012): A new species of Xestomyza Wiedemann, 1820 from South Africa, with a key to the genera of Xestomyzinae (Diptera: Therevidae). African Invertebrates 53 (1): 175, DOI: 10.5733/afin.053.0111, URL: http://www.bioone.org/doi/abs/10.5733/afin.053.0111
956BD905FFEFC90EFE1CFC9CFD10FD8D.taxon	diagnosis	Diagnosis: The genus can be distinguished from other genera in the subfamily by the long setae on the frons and parafacial, a characteristic shared with Braunsophila, Ceratosathe and Hemigephyra. Xestomyza differs from Ceratosathe by the holoptic eyes in males. From Hemigephyra it differs by the much longer proboscis. They also differ in wing coloration, with bands in Ceratosathe and Hemigephyra versus brown-maculated coloration in Xestomyza. Braunsophila is the most similar to Xestomyza, but can be separated by the following characters: scape much thicker than pedicel in Xestomyza (same thickness in Braunsophila), pair of finger­like extensions on gonocoxite with strong apical setae and apical cap on aedeagus (both features absent in Braunsophila). Notes. Flies of the genus Xestomyza, as well as the related genus Braunsophila, are rarely collected, even with Malaise traps and few specimens are known in collections. The majority of studied Xestomyza specimens were collected in September, but there are collecting dates ranging from July to December. More intense collecting efforts will very likely discover additional undescribed species.	en	Hauser, Martin (2012): A new species of Xestomyza Wiedemann, 1820 from South Africa, with a key to the genera of Xestomyzinae (Diptera: Therevidae). African Invertebrates 53 (1): 175, DOI: 10.5733/afin.053.0111, URL: http://www.bioone.org/doi/abs/10.5733/afin.053.0111
956BD905FFE8C90FFE4DFD34FCE3FD8F.taxon	description	Figs 1 – 4, 9, 11, 18, 19	en	Hauser, Martin (2012): A new species of Xestomyza Wiedemann, 1820 from South Africa, with a key to the genera of Xestomyzinae (Diptera: Therevidae). African Invertebrates 53 (1): 175, DOI: 10.5733/afin.053.0111, URL: http://www.bioone.org/doi/abs/10.5733/afin.053.0111
956BD905FFE8C90FFE4DFD34FCE3FD8F.taxon	materials_examined	Material examined: SOUTH AFRICA: Northern Cape: 1 ♀ 8 km E of Kamieskroon [30 ° 10 ' 52 " S 18 ° 00 ' 20 " E], [SE] 3018 AA, 5. ix. 1983, Londt & Stuckenberg, montane old land with rocks & bushes nearby (MEI 116079, NMSA). Western Cape: 1 ♂ Stellenbosch, # 34, 33 ° 57 ' S 18 ° 54 ' E, 1494 m, 15. ix. 1994, P. E. Reavell (MEI 164793, NMSA); 1 ♂ Paarl Dist., Du Toits Kloof [33 ° 45 ' S 19 ° 11 ' E], 1000 – 2300 ft, 27 – 28. ix. 1959, B. & P. Stuckenberg (MEI 116078, NMSA); 1 ♂ Stellenbosch [33 ° 56 ' 05 " S 18 ° 52 ' 00 " S], 2. ix. 1926, Dr H. Brauns, “ / Pseudoxestomyza longirostris Kröb. Det Kröber 1927 / Therevidae Lyneborg specimen no. 1002 / Xestomyza lugubris det. Lyneborg 1970 ” (NMSA); 1 ♂ Cape Peninsula, Silvermine Nature Reserve [34 ° 06 ' 27 " S 18 ° 26 ' 08 " E] nr road, 12. ix. 2002, Barkemeyer (MEI 146480, WBC).	en	Hauser, Martin (2012): A new species of Xestomyza Wiedemann, 1820 from South Africa, with a key to the genera of Xestomyzinae (Diptera: Therevidae). African Invertebrates 53 (1): 175, DOI: 10.5733/afin.053.0111, URL: http://www.bioone.org/doi/abs/10.5733/afin.053.0111
956BD905FFE9C903FE37FDC4FED6FE21.taxon	description	Figs 5 – 8, 12 – 17, 20 Etymology: The species is named after Brian Stuckenberg, in honour of his leading role in African Dipterology for many decades. Diagnosis: This species is significantly smaller than X. lugubris and is characterized by the grey pubescence covering the entire body and the differences in the male terminalia. Description: Male. Body length: 5.5 – 6.2 mm; wing length: 5.5 – 6.9 mm. Head: Entirely covered in silver pubescence; dichoptic with eyes separated by 2 × the distance between hind ocelli (Fig. 7); eye bare, ommatidia homogeneous in size; setae on head strong, black, except finer and white on gena, palpus and proboscis. Antenna inserted on central facial protrusion, which is silver pubescent dorsally and ventrally as on remainder of head, but dark brown pubescent laterally (Fig. 5). Scape 4.5 × as thick as long; clothed in silver pubescence; dorsoapical three-quarters and ventroapical third with strong, black, bristle­like setae (Fig. 20); setae on dorsobasal quarter and ventrobasal two­thirds of virtually same length; pedicel ovoid, with ring of stiff black setae longer than length of pedicel; flagellomere 1 pear­shaped, covered in short erect setae; second flagellomere cylindrical, with apical arista. Proboscis straight, long, virtually as long as scape; palpus long, two­segmented, both covered with numerous long, black setae admixed with some white setae. Macrosetae: 2 notopleural, 1 supra-alar, 1 postalar, 6 dorsocentral, 1 scutellar (all black). Thorax and pleuron: Entirely covered in silvery-grey pubescence, except for a medial brown fascia along length of scutum, bifurcated in anterior quarter by a silver line, and brown pubescent lateral part of scutum. Scutum with sparse black erect setae; pleuron with sparse fine white setae (Fig. 7). Prosternal depression with numerous long white setae. Wing dark brown, except lighter area in discal area, comprising basal part of cell r 5, apical part of cell d and basal part of cell m 1 (Figs 5, 6); apical half of wing with veins surrounded by lighter coloration; visible coloration chiefly caused by colour of microtrichia that are either black or yellow; all veins brown, except subcostal vein yellow. Haltere yellow­brown, lighter towards apex. All coxae black with silver pubescence. All femora dark brown with short appressed black setae and some longer erect white setae in ventral parts. All tibiae light brown with appressed short black setae and erect bristle­like setae. Tarsi brown, darker towards apex. Abdomen: Blackish brown, clothed in grey pubescence. Intersegmental membranes of segments 2 – 5 white. Medially, setae short, black, semi­erect; laterally and ventrally, setae white. Terminalia: Dark brown, with a finger­like extensions on each gonocoxite; each one of these two extensions with four apical macrosetae; apical part of gonocoxite (gonocoxal ring) open (Fig. 14); hypandrium free, large, with 4 or 5 pairs of long setae (Fig. 13); aedeagus with ventral apodeme long and forked, dorsal apodeme reduced and apical cap extended and wing­like (Figs 16, 17). Female. Body length: 5.2 – 6.4 mm; wing length: 4.5 – 5.3 mm. Similar to male (Figs 6, 8), except setae on frons and scape distinctly weaker (Fig. 9). Frons width equal in both sexes (but narrower in males vs females of X. lugubris). Holotype: ♂ “ R. S. A.: W Cape # 110 / 10 km S Lamberts Bay / 32 ° 11 ’ S: 18 ° 19 ’ E 150 m / Date: 1. ix. 1995 / coll: J. & A. Londt / Costal dunes ” (MEI 164792, NMSA). Paratypes: same label information as holotype (5 ♂ MEI 164780 (NMSA), 164783 (CSCA), 164784 (NMSA), 164786 (NMSA), 164789 (NMSA); 4 ♀ MEI 163370 (NMSA), 164779 (NMSA), 164787 (NMSA), 164791 (NMSA )).	en	Hauser, Martin (2012): A new species of Xestomyza Wiedemann, 1820 from South Africa, with a key to the genera of Xestomyzinae (Diptera: Therevidae). African Invertebrates 53 (1): 175, DOI: 10.5733/afin.053.0111, URL: http://www.bioone.org/doi/abs/10.5733/afin.053.0111
956BD905FFE5C903FDEFFDA2FE33FC17.taxon	description	Figs 10, 21 One female specimen seen probably represents a new species of Xestomyza. As this specimen is in relatively poor condition and the male remains unknown, I do not describe it here, pending discovery of additional material. The small size, sparse setae and pubescence of the frons and most of the body, place it closer to X. stuckenbergi sp. n., while the flagellomere shape is more similar to X. lugubris. It differs from X. stuckenbergi sp. n. in several characters, including weakly developed dc setae, a short scape, a shiny spot on the anepisternum and anepimeron, and clear wings. As the male remains unknown, several important characters of the male terminalia cannot be determined. There is the possibility that this species may belong to the genus Braunsophila, or is intermediate between the concepts of these two genera. Material examined: SOUTH AFRICA: Northern Cape: 1 ♀ 30 km W Calvinia [31 ° 29 ' S 19 ° 29 ' E], 7. ix. 1983, A. Freidberg (MEI 123301, TAU).	en	Hauser, Martin (2012): A new species of Xestomyza Wiedemann, 1820 from South Africa, with a key to the genera of Xestomyzinae (Diptera: Therevidae). African Invertebrates 53 (1): 175, DOI: 10.5733/afin.053.0111, URL: http://www.bioone.org/doi/abs/10.5733/afin.053.0111
