Cyclantispa, Sekerka, 2014

Sekerka, Lukáš, 2014, Review of Imatidiini genera (Coleoptera: Chrysomelidae: Cassidinae), Acta Entomologica Musei Nationalis Pragae 54 (1), pp. 257-314 : 263-267

Key to Imatidiini genera

1 Mouthparts prognathous and strongly projecting forward ( Fig. 29 ), thus easily visible from above. Labrum enlarged and visible from above. Habitus: Figs 1–3 . ................... 2

– Mouthparts prognathous or hypognathous not or slightly projecting forward ( Figs 30–34 ), thus not visible or only palps partly visible. Labrum not visible from above. Habitus: Figs 4–25 . ............................................................................................................................... 4

2 Antennae short, as long as pronotal base and with two basal glabrous antennomeres. Antennomere III ca 1.8 times longer than IV, I and II combined only slightly longer than III. Pronotum not emarginate above head, with anterior corners weakly marked and anterior margin protruding anteriad. ............................................................................................ 3

– Antennae long, about 1.5 times longer than pronotal base, and with one basal glabrous antennomere. Antennomere III ca. 1.2 times longer than IV, I and III combined distinctly much longer than III. Pronotum deeply emarginate above head with anterior corners angulate. Habitus: Fig. 1 . ............................................................ Homalispa Baly, 1858

3 Anterior margin of labrum convex, maxillary palps short, as long as two basal antennomeres ( Fig. 29 ). Interantennal space with obtuse, low and narrow carina, thus appearing impressed. Body nearly parallel-sided, pronotum pale and elytra metallic blue. Habitus: Fig. 2 . ............................................................................................ Cyclantispa gen. nov.

– Anterior margin of labrum emarginate, maxillary palps as long as three basal antennomeres and very prominent. Interantennal space with large strongly elevated and broad carina. Body widened posteriorly, drop-shaped and uniformly red. Habitus: Fig. 3 . ................... ........................................................................................................ Xanthispa Baly, 1858

4 Pronotum semicircular with distinctly rounded lateral sides. ........................................ 5

– Pronotum subquadratic and parallel-sided or trapezoidal. ........................................... 15

5 Head with sharp interantennal carina. ............................................................................ 6

– Interantennal carina absent, head between antennae impressed or convex. ................. 10

6 Pronotum without impression and with regularly convex and even surface. Body dorsally usually red to brown and without pattern. ...................................................................... 7

– Pronotum with large latero-basal impression on each side, thus its surface uneven. Dorsum yellow with black pattern. Habitus: Fig. 5 . ............. Aslamidium s. str. Borowiec, 1984

7 Body elongate. Antennae 11 segmented. ........................................................................ 8

– Body shortly oval or circular. Antennae 10 segmented. Habitus: Fig. 7 . .......................... ..................................................................................................... Calliaspis Dejean, 1836

8 Antennae ¿liform without pectinate or triangular antennomeres. .................................. 9

– Antennomeres IV–X pectinate in male and triangular in female. Habitus: Fig. 25 . ......... .................................................................................. Caloclada Guérin-Méneville, 1844

9 Explanate margin of elytra broadly explanate, disc of elytra slightly convex. Body dorsally red or brown. Habitus: Fig. 18 . ........................................ Pseudimatidium Aslam, 1966

– Explanate margin of elytra narrow, body moderately convex. Body dorsally metallic blue. .................................................................... Cephaloleia Chevrolat, 1836 (partim) 1

10 Interantennal area flat or convex and broader than ¿rst antennomere. ........................ 11

– Interantennal area with deep, pit-like fovea and narrower than ¿rst antennomere. ..... 13

11 Pronotum broadly semicircular, 1.9–2.3 times wider than long. Body broadly oval, subcircular or elongate, but not widened posteriorly. Mouthparts more or less projecting, thus usually at least palps visible from above. ..................................................................... 12

– Pronotum narrow, 1.5 times wider than long. Body widened from base posteriorly. Interantennal area flat. Mouthparts never visible from above. Habitus: Fig. 19 . ...................................................................................................... Windsorispa gen. nov.

12 Antennae long and ¿liform, ¿rst two antennomeres elongate. Body broadly oval with broad explanate margin. Habitus: Figs 14–15 . ............................. Demotispa Baly, 1858

– Antennae short and thick, ¿rst two antennomeres globose. Body elongate, parallel-sided, explanate margin narrow. Habitus: Fig. 17 . ............. Pseudostilpnaspis Borowiec, 2000

13 Tarsal claws simple. ..................................................................................................... 14

– Tarsal claws with large basal tooth. Habitus: Fig. 16 . ......... Parimatidium Spaeth, 1938

14 Lateroapical margins of elytra smooth. Antennae ¿liform and short, shorter than basal width of pronotum. Habitus: Fig. 4 . ...................................... Imatidium Fabricius, 1801

– Lateroapical margins of elytra serrate. Antennae moderately thick and long, as long as or slightly longer than basal width of pronotum. Habitus: Fig. 9 . ......................................... ............................................................................................ Xenispa Baly, 1858 (partim) 2

15 Lateroapical margin of elytra smooth. ......................................................................... 16

– Lateroapical margin of elytra ¿nely to coarsely serrate. .............................................. 21

16 Body stout with broadly explanate margin of elytra, widened around midlength. ...... 17

– Body elongate with narrow explanate margin of elytra, mostly parallel-sided or widened posteriorly. .................................................................................................................... 18

17 Anterior corners of pronotum narrow and obtuse. Head with sharp interantennal carina. Tarsal claws simple. Habitus: Fig. 13 . ............................................. Weiseispa gen. nov.

– Anterior corners of pronotum broad and rounded. Interantennal area convex, without carina. Tarsal claws with large basal tooth. Habitus: Fig. 8 . .. Spaethaspis Hincks, 1952

1 Here belong two Cephaloleia species , C. barroi Uhmann, 1959 , C. sandersoni Staines, 1996 and Demotispa sallei Baly, 1858 . Quite likely these three species belong to a different genus. See more comments in the Cephaloleia chapter.

2 Here belong eight (possibly ten) species with semicircular pronota.

18 Body variously shaped but at most 2.7 times longer than wide. Pygidium visible or not but never with sharp and protruding horizontal carina. ............................................... 19

– Body narrow, ca. 4.5 times longer than wide. Pygidium dorsally mostly visible, with sharp and strongly protruding horizontal carina ( Fig. 28 ). Habitus: Fig. 24 . ............................. ............................................................................................................ Lechispa gen. nov.

19 Pronotum parallel-sided or widening anteriorly. Pygidium visible from above. Various regions, mainly continental South and Central America. ............................................. 20

– Pronotum trapezoidal, strongly narrowed anteriorly. Pygidium not visible from above. Endemic to Guadeloupe. Habitus: Fig. 21 . .................................. Melanispa Baly, 1858

20 Mouthparts prognathous, labrum facing anteriorly. Pygidium in both sexes of same size, never with parabolic cavity.Apex of elytra usually rounded, only one species with truncate apex. Habitus: Fig. 20 . .............................. Cephaloleia Chevrolat, 1836 (most species)

Figures

Figs 29–34. Ventral aspects of head. 29 – Cyclantispa gracilis (Baly, 1885); 30 – Katkispa insignis (Pic, 1934); 31 – Windsorispa latifrons (Weise, 1910); 32 – Weiseispa angusticollis (Weise, 1893); 33 – Parentispa formosa (Staines, 1996); 34 – Lechispa parallela (Pic, 1930). Scale bars = 0.5 mm.

Figs 1–11. Dorsal habitus. 1 – Homalispa batesii Baly, 1858, French Guyana: Mt. Kaw; 2 – Cyclantispa gracilis (Baly, 1885), Panama: La Fortuna; 3 –Xanthispa cimicoides (Guérin-Méneville, 1844), French Guyana: Le Larivot; 4 – Imatidium thoracicum Fabricius, 1801, Ecuador: Cascada San Rafael; 5 – Aslamidium (s. str.) capense (Herbst, 1799), French Guyana: Fourgassie; 6 – Aslamidium (Neoaslamidium) pichinchaensis Borowiec, 1998, Ecuador: Puerto Misahuallí; 7 – Calliaspis sachaensis Borowiec & Stojczew, 1998, Ecuador: Shushu¿ndi; 8 – Spaethaspis lloydi Hincks, 1952, Ecuador: Río Puno. 9 – Xenispa testaceicornis (Pic, 1926), Bolivia: Refugio Los Volcanes; 10 – Xenispa costaricensis (Uhmann, 1930), Panama:La Fortuna;11 – Euxema insignis Baly, 1858, syntype, Panama: Volcan de Barú. All scale bars = 2.5 mm.

Figs 25–28. Dorsal habitus and pygidia. 25 – Caloclada fasciata Guérin-Méneville, 1844, French Guyana: Mt. Kaw; 26–27 Parentispa formosa male and female last ventrite and pygidium; 28 – Lechispa parallela (Pic, 1930), pygidium in posterior view. Scale bars: Fig. 25 = 5 mm, Figs 26–28 = 0.5 mm.

Figs 12–24. Dorsal habitus. 18 – Katkispa insignis (Pic, 1934), syntype, Venezuela: Colonia Tovar; 13 – Weiseispa angusticollis (Weise, 1893), Ecuador: Río Palenque; 14 – Demotispa pulchella Baly, 1858, lectotype, Peru; 15 – Demotispa rubiginosa (Boheman, 1862), Panama: Chiriquí; 16 – Parimatidium rubrum (Boheman, 1850), French Guyana:St. Laurent du Maroni;17 – Pseudostilpnaspis lata (Baly, 1885), Panama:Santa Clara; 18 – Pseudimatidium elaeicola Aslam, 1966, Colombia: Calima area; 19 – Windsorispa latifrons (Weise, 1910), Colombia: SantoAntonio; 20 – Cephaloleia Àavipennis Baly, 1869, Ecuador: Río Hollín; 21 – Melanispa sp., Guadeloupe; 22 – Parentispa formosa (Staines, 1996), Panama: La Fortuna; 23 – Stenispa attenuata Baly, 1875, Panama: Gamboa; 24 – Lechispa parallela (Pic, 1930), syntype, Argentina: Rosas. All scale bars = 2.5 mm.