Microdon berobaka Reemer

Reemer, Menno & Bot, Sander, 2015, Six new species of Microdon Meigen from Madagascar (Diptera: Syrphidae), Zootaxa 4034 (1), pp. 127-147 : 128-129

publication ID	https://doi.org/ 10.11646/zootaxa.4034.1.6
publication LSID	lsid:zoobank.org:pub:F4D27705-2963-4CBF-A3A3-017BAAB69C25
DOI	https://doi.org/10.5281/zenodo.6098451
persistent identifier	https://treatment.plazi.org/id/03F16E44-FFE9-FFBF-FF27-C9BEFD547737
treatment provided by	Plazi
scientific name	Microdon berobaka Reemer
status

Treatment

Key to Madagascan species of Microdon View in CoL View at ENA

Only males are known of Microdon berobaka Reemer sp. n., M. janne Bot sp. n. and M. tsara Keiser , so whether this key also works for females of those species is unknown.

1 Occiput evenly narrow over entire length: dorsal eye margin parallel to hind margin of head ( Figs 52 View FIGURES 49 – 53 , 59 View FIGURES 56 – 61 ). Male hind basitar- somere dorsally with wide and deep longitudinal groove ( Fig. 5). Male genitalia: phallus furcate far from apex, very slender ( Figs 53 View FIGURES 49 – 53 , 61 View FIGURES 56 – 61 )....................................................................... Microdon (Megodon) View in CoL 2

- Occiput dorsally widened (even if only slightly): dorsal eye margin diverging from hind margin of head ( Figs 21 View FIGURES 18 – 23 , 47 View FIGURES 44 – 48 ). Male hind basitarsomere dorsally without longitudinal groove (Fig. 6). Male genitalia: phallus furcate closer to apex, moderately slender ( Figs 10 View FIGURES 7 – 10 , 15 View FIGURES 11 – 15 , 23 View FIGURES 18 – 23 , 29 View FIGURES 26 – 29 , 35 View FIGURES 32 – 35 , 40 View FIGURES 36 – 40 , 48 View FIGURES 44 – 48 )......................................................... Microdon s.l. 3

2 Larger species:> 10 mm. Scutellar calcars very large and conical, making angle of about 30° with mesoscutum in lateral view ( Figs 57, 60 View FIGURES 56 – 61 )....................................................................... M. stuckenbergi (Keiser)

- Smaller species: <10 mm. Scutellar calcars more slender and more or less at same level as rest of scutellum ( Figs 54 View FIGURE 54 , 55)....................................................................................... M. planitarsus Keiser

3 Most of body with bronze sheen ( Figs 30 View FIGURES 30 – 31 , 45 View FIGURES 44 – 48 ). Scutellar calcars of 1/3 of scutellar length or longer..................... 4

- Body largely without bronze sheen, at most mesonotum and tergites 3–4 faintly metallic ( Figs 16 View FIGURES 16 – 17 , 18 View FIGURES 18 – 23 , 32 View FIGURES 32 – 35 , 36 View FIGURES 36 – 40 , 41 View FIGURES 41 – 43 , 44 View FIGURES 44 – 48 ,). Scutel- lar calcars less than 1/3 of scutellar length.................................................................. 5

4 Tibiae orange ( Fig. 45 View FIGURES 44 – 48 ). Alula bare on basomedian 1/2............................................ M. tsara Keiser

- Tibiae black, except apices somewhat paler ( Fig. 27 View FIGURES 26 – 29 ). Alula entirely microtrichose................ M. irwini Reemer sp. n.

5 Ventrolateral part of face black, contrasting with pale rest of face ( Figs 13 View FIGURES 11 – 15 , 17 View FIGURES 16 – 17 )............... M. harinhalai Reemer sp. n.

- Face more or less unicolorous, without contrasting parts ( Figs 9 View FIGURES 7 – 10 , 20 View FIGURES 18 – 23 , 25 View FIGURES 24 – 25 , 34 View FIGURES 32 – 35 , 38 View FIGURES 36 – 40 ).................................... 6

6 Pleuron and tergites black ( Figs 32, 33 View FIGURES 32 – 35 )..................................................... M. janne Bot sp. n.

- Pleuron at least partly pale brown, tergites partly brownish ( Figs 7, 8 View FIGURES 7 – 10 , 18, 19 View FIGURES 18 – 23 , 24 View FIGURES 24 – 25 , 36 View FIGURES 36 – 40 , 37, 41 View FIGURES 41 – 43 , 42)....................... 7

7 Tergite 3 with complete fascia of pale golden pile along posterior margin ( Fig. 7 View FIGURES 7 – 10 ).............. M. berobaka Reemer sp. n.

- Tergite 3 at most with medially widely interrupted, narrow fascia of pale pile posterolaterally......................... 8

8 Smaller species (11 mm) with more compact abdomen ( Fig. 18 View FIGURES 18 – 23 ). Lateral margins of tergites 3 and 4 with long white pile ( Fig. 22 View FIGURES 18 – 23 ). Male genitalia as in Fig. 20 View FIGURES 18 – 23 .................................................... M. ifanadiana Reemer sp. n.

- Larger species (13–14 mm) with more elongate abdomen ( Fig. 36 View FIGURES 36 – 40 ). Lateral margins of tergites 3 and 4 with short yellowish pile ( Fig. 39 View FIGURES 36 – 40 ). Male genitalia as in Fig. 40 View FIGURES 36 – 40 ................................................. M. sava Reemer sp. n.

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