Mythicomyiinae, Melander, 1902

Mendes, Luanna L., Lamas, Carlos J. E., Evenhuis, Neal L. & Limeira-De-Oliveira, Francisco, 2019, New Pieza Evenhuis (Diptera, Mythicomyiidae, Mythicomyiinae) from Northeast Brazil, Zootaxa 4629 (1), pp. 1-25 : 22-23

Key to genera of Mythicomyiinae of the World

(modified from Rafael & Limeira-de-Oliveira (2014)) and to Brazilian species of Pieza

1 Antenna with one flagellomere; stylus distal, tiny, inconspicuous (visible only in higher magnification); postcranium produced, subequal to eye length............................................. Tamanduamyia Rafael & Limeira-de-Oliveira

- Antenna with two flagellomeres and stylus placed apically or subapically on second flagellomere; postcranium not produced2

2 Antenna with stylus placed apically on second flagellomere.................................................... 3

- Antenna with stylus placed subapically on second flagellomere................................................. 4

3 Vein A 1 complete, reaching wing margin; costal vein incomplete, ending between R 4+5 and M 1 veins................................................................................................. Mythenteles Hall & Evenhuis

- Vein A 1 short, incomplete, reaching alular incision level; costal vein circumambient... Mitinha Rafael & Limeira-de-Oliveira

4 Costal vein circumambient; cell dm fairly short, closed apically............................. Reissa Evenhuis & Baéz

- Costal vein incomplete, ending just beyond end of vein R 4+5; cell dm much longer than wide or open apically............ 5

5 Wing with well-developed keel-shaped anal lobe; vein separating basal cells not evident; males holoptic... Mythicomyia ... 6

- Wing with anal lobe normal, not keel-shaped; vein separating basal cells distinct, often well sclerotized; males dichoptic... 7

6 Males with secondary sexual character modifications on the legs (modified shapes of and notches in mid and/or hind legs and presence of pegs and large setae).......................................... Mythicomyia (Mythicomyia) Coquillett

- Males without secondary sexual character modifications of legs.................... Mythicomyia (Heterhybos) Brèthes

7 Wing with cell dm open, distal veins faint or effaced; head as wide as or wider than thorax......... Nexus Hall & Evenhuis

- Wing with cell dm complete; distal veins not faint; head usually narrower than thorax............................ Pieza Evenhuis. ........................................................................................... 8

8 Mesopleura brown to dark brown, with yellow areas on proepimeron, anepisternum, katepisternum and meron........... 9

- Mesopleura entirely brown, without yellow areas................................................ P. kake Evenhuis

9 Ejaculatory apodeme not oval medially ( Figs 5 , 14 , 22 , 31 , 47 , 56 , 65 ).......................................... 10

- Ejaculatory apodeme oval medially ( Fig. 39 ) in ventral view.................................. P. parnasecon sp. nov.

10 Gonostyli present ( Figs 5–6 , 14–15 , 22–23 , 31–32 , 39–40 , 56–57 , 65–66 )....................................... 11

- Gonostyli absent ( Figs 47–48 ).............................................................. P. rafaeli sp. nov.

11 Pseudo-surstyli without strong setae ( Figs 5 , 14 , 22 , 31 , 65 ) in ventral view...................................... 12

- Pseudo-surstyli with three strong setae ( Fig. 56 ) in ventral view.................................. P. silvanae sp. nov.

12 Basiphallus about 1½–2.0X longer than distiphallus ( Figs 15 , 23 , 32 , 66 ); gonostylus not geniculate proximally in lateral view ( Figs 14–15 , 22–23 , 31–32 , 65–66 )...................................................................... 13

- Basiphallus about ½ length of distiphallus ( Fig. 6 ); gonostylus geniculate proximally in lateral view ( Figs 5–6 )................................................................................................... P. ankh sp. nov.

13 Gonostyli not trifurcate distally ( Fig. 65 )...................................................... P. yeatesi sp. nov.

- Gonostyli trifurcate distally ( Figs 14 , 22 , 31 ).............................................................. 14

14 Cerci sub-hemispherical with distal end spiniform, pointed posteroventrally; gonostyli slender, exceeding posterior margin of epandrium ( Fig. 15 )................................................................... P. aurislepus sp. nov.

- Cerci oval without spiniform distal end pointed posteroventrally; gonostyli short, not exceeding posterior margin of epandrium ( Figs 23 , 32 )........................................................................................ 15

15 Ejaculatory apodeme with sub-oval ventromedial projection in lateral view ( Fig. 23 ); gonocoxites with anterior ventral margin not protuberant medially in anteroventral view ( Fig. 24 )...................................... P. bittencourti sp. nov.

- Ejaculatory apodeme with subquadrate ventro-medial projection in lateral view ( Fig. 32 ); gonocoxites with anterior ventral margin protuberant medially in anteroventral view ( Fig. 33 ).................................... P. parakake sp. nov.

Figures

FIGURES 1–9. Pieza ankh sp. nov. 1, habitus male, holotype; 2, mesonotum, in dorsal view; 3, pleura; 4, male wing; 5, male terminalia, ventral view; 6, male terminalia, lateral view; 7, gonocoxite, anteroventral view; 8, epandrium and cerci, posterior view; 9, female genitalia. Scale 0.01 mm.

FIGURES 10–17. Pieza aurislepus sp. nov. 10, habitus male, holotype; 11, mesonotum, dorsal view; 12, pleura; 13, male wing; 14, male terminalia, ventral view; 15, male terminalia, lateral view; 16, gonocoxite, anteroventral view; 17, epandrium and cerci, posterior view. Scale 0.01 mm.

FIGURES 18–26. Pieza bittencourti sp. nov. 18, habitus male, holotype; 19, mesonotum, dorsal view; 20, pleura; 21, male wing; 22, male terminalia, ventral view; 23, male terminalia, lateral view; 24, gonocoxite, anteroventral view; 25, epandrium and cerci, posterior view; 26, female genitalia. Scale 0.01 mm.

FIGURES 27–34. Pieza parakake sp. nov. 27, habitus male, holotype; 28, mesonotum, dorsal view; 29, pleura; 30, male wing; 31, male terminalia, ventral view; 32, male terminalia, lateral view; 33, gonocoxite, anteroventral view; 34, epandrium and cerci, posterior view. Scale 0.01 mm.

FIGURES 43–51. Pieza rafaeli sp. nov. 43, habitus male, holotype; 44, mesonotum, dorsal view; 45, pleura; 46, male wing; 47, male terminalia, ventral view; 48, male terminalia, lateral view; 49, gonocoxite, anteroventral view; 50, epandrium and cerci, posterior view; 51, female genitalia. Scale 0.01 mm.

FIGURES 52–60. Pieza silvanae sp. nov. 52, habitus male, holotype; 53, mesonotum, dorsal view; 54, pleura; 55, male wing; 56, male terminalia, ventral view; 57, male terminalia, lateral view; 58, gonocoxite, anteroventral view; 59, epandrium and cerci, posterior view; 60, female genitalia. Scale 0.01 mm.

FIGURES 61–68. Pieza yeatesi sp. nov. 61, habitus male, holotype; 62, mesonotum, dorsal view; 63, pleura; 64, male wing; 65, male terminalia, ventral view; 66, terminalia, lateral view; 67, gonocoxite, anteroventral view; 68, epandrium and cerci, posterior view. Scale 0.01 mm.

FIGURES 35–42. Pieza parnasecon sp. nov. 35, habitus male, holotype; 36, mesonotum, dorsal view; 37, pleura; 38, male wing; 39, male terminalia, ventral view; 40, male terminalia, lateral view; 41, gonocoxite, anteroventral view; 42, epandrium and cerci, posterior view. Scale 0.01 mm.