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