Definition of the Lonchaea polyhamata species-group (Diptera, Lonchaeidae) with a description of new species Author Macgowan, Iain text Zootaxa 2018 2018-07-18 4446 3 325 342 journal article 29342 10.11646/zootaxa.4446.3.2 74ac3747-b373-47bc-81d1-e188aa0a8814 1175-5326 1444211 D7E5F511-6A3B-4837-B64C-DF09DE59B87E Key Afrotropical Lonchaea males with two katepisternal setae 1 Male genitalia: parameres long and blade-like ( Fig.4 ), hypandrium with a long posterior apodeme reaching to near base of cerci ( Fig. 1 )...( L . polyhamata group) ...................................................................... 2 - Male genitalia without blade-like parameres, hypandrium without a long posterior apodeme.......................... 8 2 Parameres with outer apical margin smooth ( Figs. 24 & 28 ).................................................... 3 - Parameres with spicules on outer apical margin ( Figs. 4 , 7 , 12 , 16 & 19 ).......................................... 4 3 Only one paramere with a strong medial tooth ( Fig. 24 ). Posterior process of surstylus bearing large two claw- like projections and a smaller medial one ( Figs. 21–23 )................................................... polyhamata McAlpine - Both parameres with a strong medial tooth ( Figs. 25 & 28 ). Posterior process of surstylus with three ventrally directed projections ( Figs 25–27 )....................................................................... teratosa McAlpine 4 Parameres broad ( Figs. 4 & 16 ).......................................................................... 5 - Parameres long and narrow ( Figs. 7 , 12 , & 19).............................................................. 6 5 Parameres apically with numerous processes, spicules and setulae ( Fig. 4 ). In lateral view posterior process of surstylus with two long curved posterior projections ( Figs. 2 & 3 )................................................ dama sp. nov. - Parameres apically with only a single large, blunt medial process, spicules limited to a small outer area ( Fig. 16 ). In lateral view posterior process of surstylus with a single posterior tooth-like projection ( Figs 13–15 )................ taita sp. nov. 6 Paramere almost straight, 2 rather small medial processes, numerous spicules near apex on outer margin ( Fig 12 ). Posterior process of surstylus with three similar sized medially directed projections ( Figs. 9–11 )................... njombe sp. nov. - Apices of parameres curved outwards at apex, medial processes larger and more obvious ( Figs. 7 & 19 )................. 7 7 Apex of paramere smoothly curved outwards, with one large and one smaller medial process ( Fig. 7 ). Posterior process of surstylus with a three similar sized projections ( Figs. 5 & 6 )........................................... mbeya sp. nov. - Apex of paramere curved outwards at almost right angles, one large and several smaller medial projections ( Figs. 19 & 20 ) In lateral view posterior process of surstylus with two rather blunt projections and a long, curved medial projection ( Figs. 17 & 18 )...................................................................................... zomba sp. nov. 8 Eyes covered with long white hairs. Orbital plate bearing setulae. Last apparent abdominal tergum elongate. Male genitalia; surstylus with a very large, angled posterior projection, a large serrated spike arising from base of cerci ( Figs. 29–31 ).............................................................................................. aberdare sp. nov. - Eyes bare, orbital plates bare. Male terminalia not as above.................................................... 9 9 Epandrium elongated into a large rounded ventral process.Ventral lobe of surstylus bearing a black stump-like process at medial base, left twice as large as that on right; apices of these processes irregularly serrate ( Figs 39–41 )...................................................................................................... dichaeta McAlpine - Epandrium without a large rounded ventral process.......................................................... 10 10 Epandrium in lateral view more rectangular with a large rounded postero-ventral process. Medial surface of surstylus with 2 small posterior teeth. ( Figs. 33–36 ).......................................................... kleynbergi sp. nov. - Epandrium almost circular in lateral view, without ant processes. Medial margins of surstyli with a single, large slightly curved process ( Figs. 37–38 ).................................................................... muhavura sp. nov.