Udzungwomyiini, Grichanov, 2018

Grichanov, Igor Ya., 2019, Discovery of Udzungwomyia Grichanov in South Africa and definition of a new tribe Udzungwomyiini (Diptera: Dolichopodidae), Israel Journal of Entomology (Oxford, England) 49 (2), pp. 267-275 : 268-269

Key to tribes of Medeterinae and genera of Udzungwomyiini

1 Mid and hind femOra with anteriOr preaрiсаL bristLes; maLe epandriaL fOramen positioned basally or basoventrally, rarely left laterally; hypandrium short, bifurcated, or reduced ( Udzungwomyiini n. trib.).....................................................2

– Mid and hind femOra bare Of majOr anteriOr preapicaL bristLes; maLe epandriaL foramen usually left lateral, rarely positioned basally (“micromedeterine” genera); hypandrium usually long and simple ( Medeterinae s.s.)...................................4

2 Vein R 4+5 reaching costa closer to R 2+3 than to M 1;M 1 distinctly weaker than other veins; 5–6 pairs of strong dorsocentral bristles; epandrial foramen positioned left laterally; hypandrium reduced ........................................................... Maipomyia

– Vein R 4+5 reaching costa closer to M 1 than to R 2+3;M 1 not weaker than other veins; 4 pairs of strong dorsocentral bristles; epandrial foramen positioned basally or basoventrally, somewhat shifted to left side; hypandrium short, bifurcated.....3

3 AcrOstichaL setae absent; LateraL scuteLLars present, hair-LiKe; distaL part Of vein M 1 weakly curved, subparallel to R 4+5; hind basitarsus distinctly shorter than next tarsomere; male segments 6 and 7 bare, segment 7 reduced; segment 8 well-developed, setose................................................................ Udzungwomyia

– AcrOstichaL setae present, biseriate; LateraL scuteLLars absent; distaL sectiOn Of wing vein M 1 arched anteriorly, distinctly converging with R 4+5; hind basitarsus about 2 times longer than next tarsomere; male segments 6 and 7 subequal in length, setose; segment 8 reduced, bare..................................................... Neomedetera

4 Veins R 4+5 and M 1 subapically bowed; distal sector of veins R 4+5 and M 1 with flexion; thorax with posterior pair of acrostichal setae often distinctly larger than preceding pair and off-set laterally; usually 6 strong dorsocentral setae; antenna sexually dimorphic, male postpedicel elongate; male terminalia with abdominal segment 7 with tergite and sternite distinct; epandrium and hypandrium immovably fused; female terminalia with tergite 10 divided medially into 2 hemitergites, each bearing a row of 4 spines .....................Systenini Robinson

– Veins R 4+5 and M 1 subparallel or convergent; vein M 1 without flexion; thorax with acrostichal setae absent, or aligned in 2 rows; usually 5, or fewer dorsocentral setae; antenna usually similar in male and female, or sometimes dimorphic; male terminalia with abdominal segment 7 with tergite and sternite fused, or sternite greatly reduced; hypandrium free and movable; female hemitergites usually without spines....................................................................................................5

5 R 4+5 and M 1 behind mid wing parallel to apex; acrostichal setae present; hind coxa with 2 lateral setae; body coloration usually bright metallic green ............ .......................................................................................... Thrypticini Negrobov

– R 4+5 and M 1 convergent, at most subparallel at apex; if those veins parallel behind mid wing to apex, then acrostichal setae absent or hind coxa with one lateral seta; body coloration usually dark ..................................................... Medeterini Lioy