A set of multi-entry identification keys to African frugivorous flies (Diptera, Tephritidae)

Massimiliano Virgilio, Ian White, Marc De Meyer


Trirhithrum nigerrimum


Genus genus unknown or Trirhithrum. Key to genera Gen.o.5: sex male or female. Head Gen.h.5: first flagellomere shorter than facial margin, Gen.h.15: ocellar setae present normal to long. Wings Gen.w.5: cell bcu (cup) appendix shorter than base, Gen.w.10: (males) wing banding Gen.w.10.2: not Ceratitis pattern, Gen.w.20: (females) wing banding Ceratitis pattern, Gen.w.30: (females) posterior apical band present, tooth. Thorax Gen.t.5: prescutellar setae present, Gen.t.10: basal scutellar setae present, Gen.t.15: anepisternal setae 1, Gen.t.25: scutellum pattern Gen.t.25.3: unicolor, black, Gen.t.45: postpronotal lobe unicolor, Gen.t.50: anepisternal stripe absent or vertical. Abdomen Gen.a.5: tergites separated. Ecology and distribuion distribution West Africa, East Africa, Central Africa or Southern Africa. Key to Trirhithrum (key to Trirhithrum) sex male or female. (key to Trirhithrum) thorax TRI.t.65: (male) anepisternum with upper part pale and lower part dark no, TRI.t.85: (female) anepisternum with upper part pale and lower part dark no. (key to Trirhithrum) wings TRI.w.80: pterostigma markedly darker than rest of pattern yes, TRI.w.150: (females) cell c largely dark (at most with a small hyaline spot in basal third) yes.