Calligrapha (Erythrographa), Gómez-Zurita, 2018

Gómez-Zurita, Jesús, 2018, Systematic revision of Central American Calligrapha Chevrolat of the subgenus Erythrographa subgen. nov. (Coleoptera: Chrysomelidae, Chrysomelinae), Zootaxa 4531 (1), pp. 1-58 : 4

Key to species of Erythrographa subgen. nov.

1. Species with contrasting pattern of pale and dark areas on pronotum; dark parts of body reddish brown.................. 2

-. Species with pronotum uniformly dark; dark parts of body reddish brown or dark bronzy brown........................ 5

2. Species with dark suture. Mexican endemic species from the southern slopes of the Sierra Madre Oriental and eastern slopes of the Trans-Mexican Volcanic Belt........................................................... C. limbaticollis Stål

-. Species with pale suture................................................................................. 3

3. Species larger than 10 mm; simplified elytral markings, with sinuous stripes. Mexican endemic species of the Trans-Mexican Volcanic Belt and western locations of the Sierra Madre del Sur.................................... C. gyllenhali Stål

-. Species smaller than 8 mm; elytra with numerous spots........................................................ 4

4. Pale areas on frons and pronotum covering less surface. Species endemic from southern Texas ( USA).. C. wickhami Bowditch

-. Pale areas on frons and pronotum covering larger surface. Mexican endemic species only known from isolated localities in southern Sierra Madre Occidental.................................................... C. thermalis Gómez-Zurita

5. Species with large triangular spot enclosed by humeral lunule, broadly confluent with humeral lunule and subsutural stripe.. 6

-. Species with two spots enclosed by humeral lunule, apical one sometimes transverse and fused laterally to humeral lunule (both spots fused in rare cases)........................................................................... 7

6. Legs reddish, typically with very large black spot on femora; humeral spot large, long, with humeral lunule confluent with basal end of arcuate band; midlateral spot largely expanded and confluent with elytral margin. Mexican endemic species known from isolated spots of the Sierra Madre Occidental, Sierra Madre del Sur and the Trans-Mexican Volcanic Belt............................................................................................ C. femorata Jacoby

-. Legs uniformly dark; humeral spot smaller, shorter, with humeral lunule free from arcuate band; midlateral spot small, narrow and free from lateral margin of elytron. Central American endemic species, from southern Mexico to western Panama........................................................................................... C. synthesys sp. nov.

7. Posterior spot enclosed by humeral lunule transverse and laterally confluent with lunule (exceptionally narrowly separated from lunule in C. intermedia Jacoby ), so that humeral marking shows characteristic tridigitate shape.................... 8

-. Posterior spot enclosed by humeral lunule round, free........................................................ 10

8. Midlateral spot elliptic or subrectangular, broadly confluent with dark margin of elytron............................. 9

-. Midlateral spot usually narrow, elongate and not broadly connected to margin of elytron. Mexican endemic species in mid and low elevation localities of Sierra Madre del Sur.............................................. C. intermedia Jacoby

9. Large markings on elytra, confluent on disc; apex of arcuate band convoluted. Central American species found from southern Mexico (Chiapas) to Costa Rica................................................................. C. tortilis Stål

-. Markings on elytra smaller, narrower and less confluent; apex of arcuate band simple, shorter. Mexican endemic species mainly distributed in Pacific slopes of the Sierra Madre Occidental and the Trans-Mexican Volcanic Belt....................................................................................................... C. suffriani Jacoby

10. Subhumeral spot absent; dark parts of body blackish; arcuate band placed closer to middle of elytron. Central American species distributed from the Gulf Coastal Plain in Mexico, through Pacific mountain chains in Central America, to western Panama................................................................................... C. suboculata Stål

-. Subhumeral spot present; dark parts of body reddish; arcuate band confluent with subhumeral stripe behind middle of elytron................................................................................................... 11

11. Midlateral spot absent; apex of humeral lunule generally free and reaching at 1/3 of arcuate band; humeral spot detached from base of elytron. Montanous Central American species found from Mexico to northern Nicaragua........ C. notatipennis Stål

-. Midlateral spot present, expanded posteriorly on elytral margin; apex of humeral lunule generally confluent with basal 1/4 or less of arcuate band; humeral spot basally confluent with basal margin of elytron................................... 12

12. Body more elliptical and convex, with humeri marked; five apical antennomeres thick and blackish; disc of pronotum nearly smooth, with very fine sparse punctures; scutellum longer than wide at base; dark parts of body and elytral markings orangish; penis feebly enlarged preapically. Mexican endemic species in the Pacific slopes of the Sierra Madre Occidental................................................................................................. C. aladina Bechyné

-. Body ovoid, with humeri feebly marked; five apical antennomeres slightly enlarged and darkened; punctation on disc of pronotum conspicuous; scutellum as long as wide at base; dark part of body and elytral markings reddish brown; penis conspicuously dilated preapically. Central American species found from southern Sonora and Coahuila ( Mexico) to Costa Rica............................................................................................ C. labyrinthica Stål