Ulmeritoides

Souto, Paula Malaquias, Da-Silva, Elidiomar Ribeiro, Nessimian, Jorge Luiz & Gonçalves, Inês Corrêa, 2016, Two new species of Ulmeritoides Traver (Ephemeroptera: Leptophlebiidae) from Southeastern Brazil, Zootaxa 4078 (1), pp. 127-136 : 135-136

Key to the genera Ulmeritoides and Ulmeritus (modified from Salles & Domínguez 2012)

The key to male imagos of Ulmeritoides and Ulmeritus presented by Salles & Domínguez (2012) was modified to include the two new species here described and Ulmeritoides passorum Gama Neto & Hamada, 2014 , as below.

1. Vein Sc of hind wings 9/10 length of wing; membrane of wings with dark maculae at cross veins (fig. 2 in Domínguez 1991); apex of each penis round, lobe with ventral digitiform projection (fig. 3 in Domínguez 1991)................ 2 Ulmeritus

1’. Vein Sc of hind wings 8/10 or less length of wing ( Figs 6 , 17 ); membrane of wings without color pattern, except in costal area; penis lobes without digitiform projections ( Figs 8 , 19 )............................................. 4 Ulmeritoides

2(1). Cross veins of hind wings few (around 20); maculae only around subcostal cross veins............ Ulmeritus saopaulensis

2’. Cross veins of hind wings numerous (33 to 50); maculae around all cross veins..................................... 3

3(2’). Maculae of fore wings forming bands (fig. 199A in Domínguez et al. 2006); ventral prolongation of penes short, approxi- mately as long as wide (fig. 199C Domínguez et al. 2006)...................................... Ulmeritus balteatus

3’. Maculae of fore wings not forming bands (fig. 199E in Domínguez et al. 2006); ventral prolongation of penes long, approxi- mately twice as long as wide (fig. 199G in Domínguez et al. 2006).............................. Ulmeritus carbonelli

4(1’). Fore wings with costal and subcostal areas tinged with brown.................................................. 5

4’. Fore wings with costal and subcostal areas hyaline.......................................................... 12

5(4). Penis lobes with apex rounded ( Figs 8–9 ; see also figs 5–8 in Avila & Flowers 2005)................................ 6

5’. Penis lobes with apex straight (figs 8, 19 in Salles & Domínguez 2012) or slightly concave ( Figs 13–14 )................ 9

6(5). Penis lobes with a ventral keel (figs 5–8 in Avila & Flowers 2005)............................................... 7

6’. Penis lobes without a ventral keel and with a central spine ( Fig. 9 )........................ Ulmeritoides angelus sp. nov.

7 (6). Ventral keel of penis lobe located near apex (figs 9F–G in Domínguez 1995)...................... Ulmeritoides tifferae

7’. Ventral keel of penis lobe located on median length (figs. 5–8 in Avila & Flowers 2005)............................ 8

8(7’). Abdomen translucent yellowish brown, lacking pattern of pale spots or dark bands............... Ulmeritoides chavarriae

8’. Abdominal terga orange-brown with pale basal spots and dark brown apical transverse spots........... Ulmeritoides acosa

9(5’). Basal broad region of forceps almost 1/4 length of segment I ( Fig. 13 , also fig. 196N in Domínguez et al. 2006)......... 10

9’. Basal broad region of forceps about 1/6 length of segment I (figs 7, 18 in Salles & Domínguez 2012).................. 11

10(9). Abdominal terga brown shaded with dark brown, with posterior margins darker and median line dark brown ( Fig. 3 )..................................................................................... Ulmeritoides tamoio sp. nov.

10’. Abdominal terga yellowish-brown, with posterior margins darker, median line absent (fig. 196P in Domínguez et al. 2006)....................................................................................... Ulmeritoides huitoto

11(9’). Penes with apex ending in an inner acute pointed projection (figs 8F–G in Domínguez 1995)....... Ulmeritoides misionensis

11’. Inner projection of penes rounded, outer corner with a small ventral spine (fig. 7C in Domínguez 1995). Ulmeritoides haarupi

12(4’). Apex of penis lobes rounded............................................................................ 13

12’. Apex of penis lobes not rounded......................................................................... 14

13(12). Each penis lobe cylindrical without a ventral keel ( Fig. 4 F in Domínguez 1995).................................. 17

13’. Each penis lobe flattened and with a ventral keel ( Fig. 12 G in Domínguez 1995)................ Ulmeritoides guanacaste

14(12’). Penes lobes with several small apical spines ( Fig. 6 D in Domínguez 1995)................... Ulmeritoides spinulipenis

14’. Penis lobes with inner apical margin ending in an acute projection.............................................. 15

15(14’). Abdominal color pattern with conspicuous lighter rounded marks.......................... Ulmeritoides uruguayensis

15’. Abdominal color pattern never as above................................................................... 16

16(15’). Bulla not surrounded with black mark (fig. 5a in Salles & Domínguez 2012).................... Ulmeritoides araponga

16’. Bulla surrounded with black mark (fig. 16a in Salles & Domínguez 2012)...................... Ulmeritoides nigribullae

17(13). Each penis lobe with a lateral groove (fig. 4F in Domínguez 1995)........................... Ulmeritoides flavopedes

17’. Penes lobes without lateral groove, apex of posterior scutal protuberance with a yellowish transversal line (fig. 14 in Neto & Hamada 2014)...................................................................... Ulmeritoides passorum

Figures

FIGURES 5 – 9. Ulmeritoides angelus sp. nov., male imago. 5. fore wing; 6. hind wing; 7. hind wing (enlarged); 8. genitalia (ventral view); 9. penis lobe (ventral view).

FIGURES 15 – 18. Ulmeritoides angelus sp. nov., imago and subimago. 15. male subimago; 16. male imago; 17. female subimago; 18. female imago. Photos by Frederico F. Salles.

FIGURES 19 – 21. SEM photographs of eggs of Ulmeritoides species. 19. U. angelus sp. nov., general aspect; 20 – 21. U. angelus sp. nov., attachments structures (20) and chorionic sculpturing showing punctation and tubercules (21).

FIGURES 10 – 14. Ulmeritoides tamoio sp. nov., male imago. 10. fore wing; 11. hind wing; 12. hind wing (enlarged); 13. genitalia (ventral view); 14. penis lobe (ventral view).

FIGURES 1 – 4. Male imagos of Ulmeritoides species. 1 – 2. U. angelus sp. nov. in dorsal (1) and lateral (2) views; 3 – 4. U. tamoio sp. nov. in dorsal (3) and lateral (4) views.