Boheman, 1854 : 421 Harold, 1876 : 3653 Spaeth, 1914 : 118 Spaeth, 1924 : 350 Borowiec, 1999 : 299 Boheman, 1854 : 435 Harold, 1876 : 3656 Borowiec, 1999 : 299 Ch. convexula Spaeth, 1914 : 127 Spaeth, 1924 : 342 Shaw, 1956 a : 272 Spaeth, 1905 : 112 Ch. nana A monograph of the Afrotropical Cassidinae (Coleoptera: Chrysomelidae). Part 4. Revision of the genus Chiridopsis Spaeth Świ, Jolanta Zootaxa 2017 2017-08-31 4316 1 1 85 5XSZX (Boheman, 1854) Boheman 1854 [151,639,1087,1114] Insecta Chrysomelidae Chiridopsis Animalia Coleoptera 26 27 Arthropoda species convexula     Cassida convexula  Boheman, 1854: 421, 1857: 134, 1862: 331; Gemminger and  Harold, 1876: 3653.    Cassida( Cassida) convexula:  Spaeth, 1914: 118.    Chiridopsis convexula  Spaeth, 1924: 350;  Borowiec, 1999: 299.    Cassida nana  Boheman, 1854: 435, 1857: 135, 1862: 332; Gemminger and  Harold, 1876: 3656;  Borowiec, 1999: 299(as syn. of  Ch. convexula).    Chirida nana:  Spaeth, 1914: 127.    Chiridopsis nana:  Spaeth, 1924: 342;  Shaw, 1956 a: 272.    Chirida Gorhami  Spaeth, 1905: 112, 1914: 127(as syn. of  Ch. nana).   Description.Le: 4.8–5.5 mm, Wi: 3.3–3.7 mm, Lp: 1.9–2.1 mm, Wp: 2.8–3.0 mm, Le/Wi: 1.36–1.51, Wp/Lp ratio: 1.43–1.50. Body elongate-oval. Dorsum uniformly yellow ( figs 27, 28). Head from yellow with infuscate basal corners to mostly brown, in extreme case black. Thorax brown to black, abdomen brown to black broadly surrounded by yellow. Coxa from yellowish-brown to almost black, rest of legs yellow. Antennae yellow. Pronotum elliptical ( fig. 27), with maximum width in the middle, anterior margin softly convex, sides broadly rounded, no basal corners. Surface of disc from impunctate to finely and sparsely punctate, from slightly alutaceous to shiny. Explanate margin broad, impunctate, shiny, transparent with well visible honeycomb structure. Base of elytra moderately wider than base of pronotum ( fig. 27), humeral angles distinctly protruding anterad, subrounded. Disc moderately, regularly convex in profile, without impressions ( fig. 28). Punctation fine to moderate, on sides coarser than on top of disc, arranged in regular rows, rows 1 and 2, and 3 and 4 grouped in pairs thus intervals 1 and 3 twice narrower than intervals 2 and 4, distance between punctures from as wide as to twice times wider than puncture diameter in some populations rows shallowly impressed. Marginal row distinct, its punctures not coarser than punctures in central rows. Intervals flat, intervals 1 and 3 twice, intervals 2 and 4 three to four times wider than rows, intervals on sides of disc mostly 1.5 times wider than rows, marginal interval in humeral half twice wider than submarginal one, no humeral or lateral folds. Explanate margin narrow, strongly declivous, in the widest part 5.5 times narrower than disc, surface with shallow and sparse punctation, shiny, transparent with well visible honeycomb structure. Eyes very large, gena obsolete. Clypeus very broad, approximately 1.5 times as wide as long. Clypeal grooves fine but well marked, in anterior part deep, in basal half running close to margin of eyes then converging in arch, surface of clypeus regularly convex, sometimes with shallow median groove, shiny with few very small, setose punctures. Labrum minutely emarginate to 1/5 length. Antennae slim, segments 9–10 approximately 1.6 times as long as wide. Length ratio of antennal segments: 100:58:73:73:58:50:54:58:62:62:123. Segment 3 approximately 1.3 times as long as segment 2 and as long as segment 4. Prosternum broad in the middle, moderately expanded apically, area between coxae flat or with very shallow central impression, surface shiny, without special microsculpture, with few hairy punctures, expanded apex flat, with special sculpture, shiny, with several setose punctures. Claws with moderate basal teeth.   Distribution.  SouthAfricaincluding Swazilandand Zimbabwe( fig. 9).   Remarks.It belongs to the group of species with uniformly yellow dorsum. Three species of this group have clypeus mostly to completely yellow:  Ch. convexula,  Ch. flavipennisand  Ch. parellina( figs 27, 28, 107, 108, 111, 112).  Chiridopsis flavipennisdistinctly differs in short-oval body, with length/width ratio approximately 1.24, and moderately declivous explanate margins while in  Ch. convexulaand  Ch. parellinabody is elongate-oval, length/ width ratio 1.29–1.48, with strongly declivous explanate margins.  Chiridopsis parellinadiffers in elytral rows of punctures spread regularly over elytral surface, interval 2 only slightly wider than interval 1, and intervals 3 and 4 equal in width, punctures in lateral rows sparse, distance between punctures mostly twice wider than puncture dimeter while in  Ch. convexulaelytral rows of punctures tend to form pair (1+2, 3+4, 5+6, 7+8), interval 2 and 4 distinctly wider than intervals 1 and 3, punctures in lateral rows dense, distance between punctures mostly as wide as puncture dimeter.  Chiridopsis parellinahas clypeus always completely yellow while in  Ch. convexulaclypeus usually has infuscate basal corners or whole basal margin. Form of  Ch. convexulawith completely black clypeus differs from other yellow species with black clypeus in described above elytral punctation tending to foms a paired rows.    Typesexamined. Lectotypeand 4 paralectotypesof  Cassida convexula(designated by Borowiec 1999: 299): [ SOUTH AFRICA] Pt. Nat., I.Vahlb. ( NRS).   Lectotypeof  Cassida nana(designated by Borowiec 1999: 299): [ SOUTH AFRICA] Pt. Nat., I.Vahlb. ( NRS).   Syntypeof  Chirida gorhami: [ SOUTH AFRICA] Natal, Estcourt,  I 1897(MM).     Otherspecimens examined. SOUTH AFRICA: Machadodorp, Transvaal,  X 1938, 2, Baum(1 NMP, 1 DBET);  Oranje, Golden Gate, 14–15  I 1964, 1, A. Capener( ZSM);  E Transvaal, 20 kmS Nelspruit,  750 m, 14  XII 1995, 1, M. Biondi(MB).   SWAZILAND: Eranchi, 5–10  I 1955, 6, A.L. Capener (4 MM, 2 LB).    ZIMBABWE: Bulawayo, Hope Fontein, 2  II 1987, 3, W. Wittmer( NHMB, 2 LS); 28 km Bulawayo–Matopos, 3  II 1987, 2, W. Wittmer( NHMB). 1587280503 NRS Pt. Nat., I. South Africa SOUTH AFRICA 27 28 4 lectotype 1587280507 [199,1436,1196,1221] NRS Pt. Nat., I. South Africa SOUTH AFRICA 27 28 1 lectotype 1587280509 [199,1097,1231,1256] 1897-01 South Africa Natal Estcourt 27 28 1 syntype 1587280493 1938-10-02 NMP, DBET South Africa Other Transvaal Machadodorp 27 28 1 1587280494 [248,900,1303,1328] 1964-01-01 ZSM South Africa Oranje Capener Golden Gate 27 28 1 A 1587280519 1995-12-01 E Transvaal & M. Biondi South Africa 750 Nelspruit 27 28 1 A 1587280520 [199,982,1375,1400] 1955-01-06 Swaziland A 27 28 1 A 1587280511 1987-02-02 1987-02-03 1987-02-02 NHMB W. Wittmer Zimbabwe Hope Fontein 27 28 1 Bulawayo