Dorynota

Simões, Marianna V. P. & Sekerka, Lukáš, 2015, Review of the Neotropical Leaf Beetle SubgenusDorynota s. str. Chevrolat (Coleoptera: Chrysomelidae: Cassidinae: Dorynotini), The Coleopterists Bulletin 69 (2), pp. 231-254 : 251-252

KEY TO THE SPECIES OF DORYNOTA S. STR.

1. Lateral margins of elytra concave behind humeral angles; dorsal spine in lateral view with at least apical half 2X narrower than basal half, followed by steep, abrupt slope ( Dorynota s. str.) .......................................2

1′. Lateral margins of elytra straight or convex about midlength; dorsal spine in lateral view with apex not markedly narrower than base, followed by gradual, continuous slope........ .............................. Akantaka Maulik, 1916

2. Dorsal spine in frontal view broadly triangular and not projecting from its base with straight lateral margins ( Figs. 24 , 37 ).......3

2′. Dorsal spine in frontal view elongate and projecting from its base with sinuous lateral margins at the base ( Fig. 42 ).....................4

3. Body with dark red outline and lateral margins subparallel; elytral disc in lateral view with low elevation under humeral angle and 2 clusters of punctation, medially and close to apical 1/3, markedly darker than rest of disc ( Figs. 36–38 ).................................... ........... D. rufomarginata ( Wagener, 1881)

3′. Body with black outline and lateral margins slightly sinuous in anterior half; elytral disc with low elevation under humeral angle, with punctation distributed uniformly ( Figs. 23–25 )....................................... ........................ D. nodosa ( Boheman, 1854)

4. Pronotum densely and coarsely punctate; elytral intervals punctate............................5

4′. Pronotum smooth, impunctate, or with several sparsely arranged punctures; elytral intervals impunctate...................................8

5. Scutellum rhomboidal; dorsum at most with sparse, very short pubescence; South America ......................................................................... 6

5′. Scutellum triangular; dorsum usually with long, dense pubescence ( Figs. 1–2 ); endemic to Hispaniola .................................................. ..................... D. aculeata ( Boheman, 1854)

6. Body appearing strongly triangular, with strongly explanate humeral angles and subacuminate apex of elytra; elytral surface smooth, intervals not elevated; dorsum with black pattern...............................................7

6′. Body nearly oval with weakly explanate humeral angles and rounder elytral apex; elytra appear rugose due to more or less elevated intervals; dorsum reddish brown without black spots ( Figs. 28–29 ) .............. .................... D. parallela Blanchard, 1846

7. Explanate margin of elytra broad; outer margin of elytral suture, oblique ridge from spine to humerus, latero-apical spot, scutellum, and midline of pronotum black; elytral intervals densely and coarsely punctate ( Figs. 30–31 ) ................................................ .................... D. pugionata ( Germar, 1824)

7′. Explanate margin of elytra narrow; black color limited to humeral angles; elytral intervals moderately punctate ( Figs. 11–12 ) ....................... D. hastifera ( Spaeth, 1923)

8. Dorsum black, with or without metallic tint....................................................................9

8′. Dorsum yellow to reddish or brown, but never with metallic tint............................10

9. Dorsum opaque black, sides of pronotum and lateral slope about midlength with more or less visible reddish spot; dorsum densely pubescent with long setae; dorsal spine long, approximately 1.2X shorter than body height ( Figs. 5–6 ) .................... D. bidens (F., 1781)

9′. Dorsum uniformly black, usually with dark green metallic luster; dorsum covered with short setae, but at first glance appears bare; dorsal spine short, approximately 2X shorter than body height ( Figs. 21–22 ) ................... ........................ D. nigra ( Boheman, 1856)

10. Humeral angles without carina ................11

10′. Humeral angles with sharp carina ...........12

11. Body subtriangular, with rounded apex; dorsum uniformly yellow ( Figs. 26–27 ); endemic to Ecuador.................................... ......................... D. ohausi ( Spaeth, 1916)

11′. Body escutcheon-shaped, with acuminate apex; dorsum with extensive black pattern ( Figs. 15–16 ); Costa Rica (Puntarenas) and Brazil (Amazonas) ....................................... ....... D. monneorum Simões and Sekerka , new species

12. Body large, at least 11 mm long; humeral angles straight, truncate; South American species, but one in Mesoamerica.............13

12′. Body small, length <8mm; humeral angles rounded and directed backwards ( Figs 41–43 ); endemic to Yucatán Peninsula in Mexico and Belize........ D. yucatana ( Champion, 1893)

13. Humeral angles broad, moderately protruding laterally ( Figs. 3 , 34, 39 )................... 14

13′. Humeral angles very broad, strongly protruding laterally ( Figs. 7 , 9, 13 , 32 )........16

14. Dorsum yellow with black pattern; humeral carina low; outer humeral angle obtuse; apex of elytra subangulate; explanate elytral margin moderately broad; Bolivia and Paraguay............................................................ 15

14′. Dorsum amber-yellow with indistinct yellowish to brownish pattern; humeral carina strongly elevated; outer humeral angle rounded; apex of elytra rounded; explanate elytral margin very narrow ( Figs. 3–4 ); Mesoamerica ........................... D. aurita ( Boheman, 1862)

15. Explanate elytral margin with transverse black spots; antennae uniformly yellow, only terminal antennomere slightly infuscate; scutellum rhomboidal ( Figs. 34–35 ); lowland species; Bolivia and Paraguay....................... .............................. D. rileyi Borowiec, 1994

15′. Explanate elytral margin uniformly yellow; antennomeres IV–XI infuscate; scutellum subrhomboidal, with convex anterior margin ( Figs. 39–40 ); montane species; Bolivia....... ................ D. wappesi Sekerka and Simões , new species

16. Humeral angles rounded; lateral margin of elytra broadly explanate; punctation of elytra coarse and dense with intervals narrower than puncture diameter; elytra yellowish red to reddish brown, but color always uniform; pronotum same color as elytra and always immaculate..................................... 17

Figures

Figs. 23–31. Dorynota (s. str.) species. 23) D. nodosa from Colombia, dorsal view; 24) D. nodosa, frontal view; 25) D. nodosa, lateral view; 26) D. ohausi from Ecuador (Zamora-Chinchipe), dorsal view; 27) D. ohausi, lateral view; 28) D. parallela from Brazil (Goiás), dorsal view; 29) D. parallela, lateral view; 30) D. pugionata from Brazil (Rio de Janeiro), dorsal view; 31) D. pugionata, lateral view.

Figs. 32–43. Dorynota (s. str.) species. 32) D. pugnax, holotype, dorsal view; 33) D. pugnax, lateral view; 34) D. rileyi, paratype, dorsal view; 35) D. rileyi, lateral view and labels; 36) D. rufomarginata, holotype, dorsal view; 37) D. rufomarginata, frontal view; 38) D. rufomarginata, lateral view; 39) D. wappesi, holotype, dorsal view; 40) D. wappesi, lateral view; 41) D. yucatana, syntype, dorsal view; 42) D. yucatana, frontal view; 43) D. yucatana, lateral view.

Figs. 1–8. Dorynota (s. str.) species. 1) D. aculeata, paralectotype, dorsal view; 2) D. aculeata, paralectotype, lateral view and labels; 3) D. aurita from Mexico (Durango), dorsal view; 4) D. aurita, lateral view; 5) D. bidens from Brazil (Minas Gerais), dorsal view; 6) D. bidens, lateral view; 7) D. borowieci, holotype, dorsal view; 8) D. borowieci, lateral view.

Figs. 9–14. Dorynota (s. str.) species. 9) D. cornigera, lectotype, dorsal view; 10) D. cornigera, lateral view and labels; 11) D. hastifera, holotype, dorsal view; 12) D. hastifera, lateral view and labels; 13) D. monoceros from Brazil (Bahia), dorsal view; 14) D. monoceros, lateral view.

Figs. 15–22. Dorynota (s. str.) species. D. monneorum: 15) Holotype, dorsal view; 16) Lateral view; 17) Sternite VIII; 18) Tergite X; 19) Spermatheca; 20) Sternite IX. D. nigra, lectotype: 21) Dorsal view; 22) Lateral view and labels.