Merodon nigritarsis
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publication ID |
https://doi.org/ 10.11646/zootaxa.3640.3.7 |
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publication LSID |
lsid:zoobank.org:pub:1D130D7E-A84A-49B4-B895-08927793B1F2 |
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DOI |
https://doi.org/10.5281/zenodo.6158034 |
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persistent identifier |
https://treatment.plazi.org/id/03B98790-FFFF-FFEE-EAEB-F96DFA1DFAEC |
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treatment provided by |
Plazi |
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scientific name |
Merodon nigritarsis |
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Key to the males of Merodon nigritarsis View in CoL group species
1. Posterior part of mid coxa without long pile ( Merodon View in CoL s.str.).................................................... 2
- Posterior part of mid coxa with long pile................................... Other Merodon View in CoL groups (not treated here)
2. Species with white microtrichose longitudinal stripes on black mesoscutum and white microtrichose transverse bands on orange-brown tergites ( Figs. 4 View FIGURE 4 B, 5A, 5B, 4A); at least tergite 2 with reddish-orange marks; mesoscutum covered with erect, yellow pile; abdomen elongate, narrow and tapering, always longer than mesoscutum and scutellum together ( Figs. 4 View FIGURE 4 A–B, 5A–B); first flagellomere at most twice as long as wide ( Fig. 6 View FIGURE 6 ); legs without spikes or other protuberances ( Figs. 7–9 View FIGURE 7 View FIGURE 8 View FIGURE 9 ); tarsi dark brown/black dorsally and orange ventrally; at least metatarsus of hind legs always darkened dorsally; male genitalia: anterior lobe of surstylus ( Fig. 10 View FIGURE 10 A: a) more or less of rhomboid shape, except in the alagoezicus View in CoL complex of species where it is transformed into a narrow, elongate, strongly curved projection ( Fig. 1 View FIGURE 1 : a).......... Merodon nigritarsis View in CoL group......... 3
- Species with different combination of characters.................. Other Merodon View in CoL s. str. species groups (not treated here)
3. Hind femur narrow and elongate ( Fig. 9 View FIGURE 9 C); posterior lobe of the surstylus with strong interior accessory lobe of posterior lobe of the surstylus ( Fig. 23 View FIGURE 23 A: i).............................................................. Merodon nitidifrons View in CoL
- Hind femur broader; posterior lobe of the surstylus without or with small interior accessory lobe of posterior lobe of the sursty- lus (as on Fig. 24 View FIGURE 24 B: i)................................................................................... 4
4. Anterior lobe of the surstylus transformed to narrow, long, curved, upwards pointed extension (as on Figs. 23 View FIGURE 23 B: a)......... 5
- Anterior lobe of the surstylus rhomboid shape (as on Figs. 23 View FIGURE 23 G: a)............................................... 9
5. Apical part of hind tibia with clear ventrolateral lamella(as on Fig. 7 View FIGURE 7 C: x)......................................... 6
- Apical part of hind tibia without clear ventrolateral lamella (as on Fig. 7 View FIGURE 7 A)........................................ 8
6. Anterior lobe of the surstylus long, narrow, with rounded basal curve ( Fig. 23 View FIGURE 23 B: a); posterior lobe of the surstylus two times as long as its width, straight ( Fig. 23 View FIGURE 23 B: p)..................................................... Merodon alagoezicus View in CoL
- Anterior lobe of the surstylus with angular basal curve; posterior lobe of the surstylus S-shaped ( Figs. 23 View FIGURE 23 C-D)............ 7
7. Anterior lobe of the surstylus with additional basal extension ( Fig. 23 View FIGURE 23 D: e)........................ Merodon satdagensis View in CoL
- Anterior lobe of the surstylus without additional basal extension ( Fig. 23 View FIGURE 23 C).......................... Merodon schachti View in CoL
8. Abdomen covered with pale pile; tergite 2 without white microtrichose marks (Fig. 5A). Posteriorlobe of the surstylus broader in anterior view ( Fig. 20 View FIGURE 20 A: p) and oval in lateral view ( Fig. 11 View FIGURE 11 A: p)........................ Merodon hakkariensis View in CoL n. sp.
- Abdomen with short black pile on posteromedial part of tergite 3 and medial parts of tergite 4; tergite 2 usually with pair of white microtrichose marks (as on Fig.5B). Posteriorlobe of the surstylus narrower in anterior view ( Fig. 20 View FIGURE 20 B) and with lamellar structure in lateral view ( Fig. 11 View FIGURE 11 B: y).......................................................... Merodon lucasi View in CoL
9. Face with bulge below antennae ( Fig. 16 View FIGURE 16 C); posterior lobe of the surstylus hook-like ( Fig. 23 View FIGURE 23 E: p); hind femur very broad (as on Fig. 9 View FIGURE 9 B).......................................................................... Merodon crassifemoris View in CoL
- Face without bulge.................................................................................... 10
10. Pile on hind femur very short on ventral surface ( Fig. 8 View FIGURE 8 A). Male genitalia on Figs. 10 View FIGURE 10 A, 13A....... Merodon angustus View in CoL n. sp.
- Pile on hind femur longer on ventral surface (as on Fig. 8 View FIGURE 8 C)................................................... 11
11. Hind femur and tibia extremely curved ( Fig. 8 View FIGURE 8 C). Male genitalia: posterior and anterior lobe of the surstylus separated by deep incision ( Fig.10 View FIGURE 10 B); hypandrium on Fig. 13 View FIGURE 13 B................................................. Merodon testaceus View in CoL
- Hind femur and tibia less curved (as on Fig. 9 View FIGURE 9 B). Male genitalia: posterior and anterior lobe of the surstylus not deeply divided (as on Fig. 9 View FIGURE 9 A)....................................................................................... 12
12. Hind femur broad and covered with long anteroventral and posteroventral pile, as long as half of width hind femur (as on Figs. 9 View FIGURE 9 A, 19)............................................................................................. 13
- Hind femur narrower and covered with shorter anteroventral and posteroventral pile................................ 15
13. Anterior lobe of the surstylus 2.5 times shorter than posterior lobe of the surstylus ( Fig. 23 View FIGURE 23 G)........... Merodon toscanus View in CoL
- Anterior lobe of the surstylus less than 2 times shorter than posterior lobe of the surstylus ( Fig. 12 View FIGURE 12 ).................... 14
14. Anterior lobe of the surstylus short and broad, equilateral ( Fig. 12 View FIGURE 12 A); posterior lobe of the surstylus short and broad ( Fig. 12 View FIGURE 12 A)................................................................................ Merodon quadraticus View in CoL n. sp.
- Anterior lobe of the surstylus elongate, triangular ( Fig. 12 View FIGURE 12 B); posterior lobe of the surstylus elongated and narrow ( Fig. 12 View FIGURE 12 A)......................................................................................... M. femoratoides View in CoL
15. Lobe of the surstylus broad, anterior lobe of the surstylus very short ( Fig. 23 View FIGURE 23 F)..................... Merodon taniniensis View in CoL
- Lobe of the surstylus elongated (as on Fig. 24 View FIGURE 24 B)............................................................ 16
16. Male genitalia: posterior lobe of the surstylus short, as long as wide ( Fig.24 View FIGURE 24 A). Lateral projection of hypandrium narrow and short ( Fig. 24 View FIGURE 24 E: lt)....................................................................... Merodon nigritarsis View in CoL
- Male genitalia: posterior lobe of the surstylus elongated, 1.5 times long as wide( Fig.24 View FIGURE 24 B). Lateral projection of hypandrium longer ( Fig. 24 View FIGURE 24 F: lt).................................................................... Merodon latifemoris View in CoL
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