Afrotropical Asilinae (Asilidae): A provisional key to genera, with a review of the status of Neomochtherus Osten Sacken, 1878, and descriptions of new genera and species Author Londt, Jason G. H. text African Invertebrates 2002 2002-12-31 43 11 92 journal article 10.5281/zenodo.7666136 2305-2562 7666136 5E567E59-041D-4F41-95FD-DCE4227CCAF8 Tsacasiella instabilis (Tsacas, 1969) ( Figs 217–223 ) Neomochtherus instabilis Tsacas, 1969: 19–21 . Tsacasiella instabilis ; Lehr, 1996: 73. Type material: Holotype : DR CONGO : 1ơ [seen], ‘Holo- / type’, ‘Kambove, [ 10 ° 52'S : 26 ° 35'E ] / Katanga . / 2.4.07 / 4,000 – 5,000 ft. ’, ‘Neave Coll / 1907-230’, ‘ Neomochtherus / instabilis n.sp. / Holotype M / L. Tsacas Det 1967’ ( BMNH ). Material examined: MALAWI : 2ơ 2^, 80 km S. of Mzimba , SE1233BC, 27.ii.1987 , J. & A. Londt , Long grass & trees near Luwelezi river . Type locality: Democratic Republic of Congo , Kambove . Comments : Although the Malawi material bears a strong resemblance to the holotype , especially with respect to the male genitalia, minor differences, considered to represent individual variation, do exist. Far more new material is required before a good understanding of the species can be achieved .