Amnestus

Martinez, Cristina Mayorga & Peredo, Luis Cervantes, 2014, The genus Amnestus Dallas (Hemiptera: Heteroptera: Cydnidae: Amnestinae) in Mexico, with the description of eleven new species from Chiapas, Zootaxa 3779 (4), pp. 401-432 : 430-431

Key to the species of Amnestus from Mexico

1. Juga with four or five marginal pegs ( Fig. 1a – 3c, 3e )......................................................... 2

1’ Juga with seven marginal pegs ( Fig. 3d ).............................................. A. septemclavatus sp. nov.

2. Juga with four marginal pegs Fig. 10b)..................................................................... 3

2’ Juga with five marginal pegs ( Fig. 1a – 3c, 3e )............................................................... 6

3. Male fore tibia without spine or angulation on ventral margin....................................... A. pusio (Stål)

3’ Male fore tibia with spine and angulation on ventral margin.................................................... 4

4. Hind femora of males with a ventral subapical spine, slightly longer than one third of tibial length ( Fig. 7q ). A. pusillus Uhler

4’ Hind femora of males with a ventral subapical spine, much shorter than one third of tibial length ( Fig. 7n, 7o )............ 5

5. Male fore leg as in figure 7n, femora with a median bifid spine and tibia with a small angulation................................................................................................ A. sinuosus Mayorga & Cervantes

5’ Male fore leg as in figure 7o, femora with a median simple spine and tibia with a deep angulation. A.basidentatus Froeschner

6. Tylus longer than juga by a length equal to its width, without transverse rugae ( Fig. 10a)................ A. uhleri Distant

6’ Tylus just slightly longer than juga by a length shorter than its width, with or without transverse rugae.................. 7

7. Prosternal carina lower than rostral segment II.............................................................. 8

7’ Prosternal carina higher than rostral segment II............................................................. 16

8. Prosternal carina with ventral margin straight............................................................... 9

8’ Prosternal carina with ventral margin not straight........................................................... 13

9. Lateral margins of pronotum expanded ( Fig. 1d , 2b , 3e )...................................................... 10

9’ Lateral margins of pronotum not expanded................................................................ 12

10. Lateral margin of pronotum crenate ( Fig. 1d ); paramere as in figure 6d........................ A. cristobalensis sp. nov.

10’ Lateral margin of pronotum entire ( Fig. 3a, 3e ); paramere not as above.......................................... 11

11. Fore tibiae with five spines on dorsal margin ( Fig. 6i ); paramere as in figure 6f. .................... A. marcelae sp. nov.

11’ Fore tibiae with six spines on dorsal margin ( Fig. 6m ); paramere as in figure 6m. ....................... A. stali Distant

12. Hind femora of males with a bifid spine near apex on ventral margin ( Fig. 7p ).............. A. ficus Mayorga & Cervantes

12’ Hind femora of males with a thin and oblique subapical spine on ventral margin ( Fig.7o )........... A. brunneus Signoret

13. Ventral margin of prosternal carina sinuate ( Fig. 4k ); paramere as in figure 8k.................... A. santiagensis sp.nov.

13’ Ventral margin of prosternal carina rounded ( Fig. 4i ); paramere not as above...................................... 14

14. Posterior half of head without punctures; paramere as in figure 8h................................. A. lorenae sp. nov.

14’ Posterior half of head with punctures; paramere not as above................................................. 15

15. Fore tibiae with seven spines on dorsal margin............................................... A. pallidus Zimmer

15’ Fore tibiae with five spines on dorsal margin.................................. A. brailovskyi Mayorga & Cervantes

16. Prosternal carina with ventral margin straight.............................................................. 17

16’ Prosternal carina with ventral margin not straight........................................................... 19

17. Anterior half of lateral margin of pronotum toothed; paramere apically elongated......... A. rugosus Mayorga & Cervantes

17’ Anterior half of lateral margin of pronotum not toothed; paramere apically short.................................. 18

18. Pronotal umbones and disc without distinct punctures; paramere as in figure 8a..................... A. bergrothi Distant

18’ Pronotal umbones and disc with distinct punctures; paramere as in figure 8n. ......................... A. forreri Distant

19. Tylus with some rugae; paramere as in figure 8c............................................ A. chiapensis sp.nov.

19’ Tylus without rugae; paramere not as above................................................................ 20

20. Basal margin of hemelytra denticulate ( Fig. 1b )............................................................. 21

20’ Basal margin of hemelytra entire ( Fig. 2a, 2c ).............................................................. 24

21. Fore femora with a bifid spine on middle area of ventral margin ( Fig. 6b )......................................... 22

21’ Fore femora without a bifid spine on middle area of ventral margin ( Fig. 6f ).................... A. laevifemoralis sp.nov.

22. Fore tibiae with six spines on dorsal margin ( Fig. 6g )........................................................ 23

22’ Fore tibiae with five spines on dorsal margin................................ A. calakmulensis Mayorga & Cervantes

23. Prosternal carina higher than rostral segment II with a series of fine setae basally................ A.carinopilosus sp.nov.

23’ Prosternal carina higher than rostral segment II with a small grove on ventral margin.... A. carinatus Mayorga & Cervantes

24. Anterior lobe of pronotum without punctures ( Fig. 2a )...................................................... 25

24’ Anterior lobe of pronotum with punctures ( Fig. 2c , 3b )....................................................... 26

25. Fore tibiae with four robust spines on dorsal margin; corium pale yellow................ A. henryi Mayorga & Cervantes

25’ Fore tibiae with six spines on dorsal margin; corium pale brown ( Fig. 6e )...................... A. denticulatus sp. nov.

26. Anterior lobe of pronotum uniformly punctured around disc, callous without punctures............................. 27

26’ Anterior lobe of pronotum with scattered punctures on disc and lateral margins thickly and coarsely punctuated.................................................................................................. A. dallasi Distant

27. Fore tibiae with six spines on dorsal margin ( Fig. 6g, j )....................................................... 28

27’ Fore tibiae with seven spines on dorsal margin................................... A. obscurus Mayorga & Cervantes

28. Prosternal carina higher than rostral segment II, with a small grove on ventral margin ( Fig. 2 j); paramere as in figure 6j.................................................................................... A. puncticarinatus sp. nov.

28’ Prosternal carina with anterior half higher than rostral segment II, and curved apically ( Fig. 2c ); paramere as in figure 8g ......................................................................................... A. longinoi sp. nov.

Figures

FIGURES 1 A – D. Dorsal view of adults. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species (scale = 1 mm).

FIGURES 3 A – E. Dorsal view of adults. a. A. marcelae new species, b. A. puncticarinatus new species, c. A. santiagensis new species, d. A. septemclavatus new species, e. A. stali Distant (scale = 1 mm).

FIGURES 7 A – Q. Male hind leg, posterior view. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species, e. A. denticulatus new species, f. A. laevifemoralis new species, g. A. longinoi new species, h. A. lorenae new species, i. A. marcelae new species, j. A. puncticarinatus new species, k. A. santiagensis new species, l. A. septemclavatus new species, m. A. stali Distant, n. A. sinuosus, o. A. brunneus, p. A. ficus, q. A. pusillus.

FIGURES 2 A – D. Dorsal view of adults. a. A. denticulatus new species, b. A. laevifemoralis new species, c. A. longinoi new species, d. A. lorenae new species (scale = 1 mm).

FIGURES 6 A – O. Male fore leg, anterior view. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species, e. A. denticulatus new species, f. A. laevifemoralis new species, g. A. longinoi new species, h. A. lorenae new species, i. A. marcelae new species, j. A. puncticarinatus new species, k. A. santiagensis new species, l. A. septemclavatus new species, m. A. stali Distant, n. A. sinuosus, o. A. basidentatus.

FIGURES 4 A – M. Lateral view of head and prothorax, showing prosternal carina. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species, e. A. denticulatus new species, f. A. laevifemoralis new species, g. A. longinoi new species, h. A. lorenae new species, i. A. marcelae new species, j. A. puncticarinatus new species, k. A. santiagensis new species, l. A. septemclavatus new species, m. A. stali Distant.