Chiridopsis quadriguttata ( Boheman, 1854 ), Boheman, 1854

Świ, Jolanta, 2017, A monograph of the Afrotropical Cassidinae (Coleoptera: Chrysomelidae). Part 4. Revision of the genus Chiridopsis Spaeth, Zootaxa 4316 (1), pp. 1-85: 50-52

publication ID

https://doi.org/10.11646/zootaxa.4316.1.1

publication LSID

lsid:zoobank.org:pub:B38Feccf-8Ca0-43F8-Ae1C-Bea04F547E59

persistent identifier

http://treatment.plazi.org/id/03A987E8-FF81-FFCD-FF15-DD0AFD82F9B4

treatment provided by

Plazi

scientific name

Chiridopsis quadriguttata ( Boheman, 1854 )
status

 

Chiridopsis quadriguttata ( Boheman, 1854)  

( figs 15 View FIGURE 15 , 102–106 View FIGURES 102 – 106 )

Cassida quadriguttata Boheman, 1854: 464   , 1857: 141, 1862: 343; Gemminger and Harold, 1876: 3657.

Chirida quadriguttata: Weise, 1896 c: 23   (4-guttata); Spaeth, 1914: 127.

Chiridopsis quadriguttata Spaeth, 1924: 349   ; Borowiec, 1999: 302.

Coptocycla sexoculata Thomson, 1858: 234   , Bohmean, 1862: 486; Gemminger and Harold, 1876: 3674; Spaeth, 1917: 444 (as synonym of Cassida quadriguttata   ).

Chirida sexoculata: Weise, 1896 c: 23   ; Spaeth, 1914: 127.

Description. Le: 5.00– 5.60 mm, Wi: 4.00– 4.20 mm, Lp: 2.00– 2.15 mm, Wp: 3.00– 3.30 mm, Le/Wi: 1.23–1.33, Wp/Lp: 1.47–1.57.

In nominotypically coloured specimens pronotum yellow, disc with large black, triangular spot marked with two large yellow spots close to base, sometimes on sides of black triangle single, small, yellow spot. Scutellum black, elytral disc in typical form black with two large, elongate yellow spots in anterior half, two smaller yellow spots in posterior half, and yellow marginal interval and apex of disc ( fig. 102 View FIGURES 102 – 106 ) Often yellow spots on disc broadly joined and forming on each elytron single elongate spot more or less constricted in the middle ( figs 103, 105, 106 View FIGURES 102 – 106 ). In the palest specimens lateral black stripes incomplete, not connected with black stripe along suture ( fig. 105 View FIGURES 102 – 106 ). Explanate margin always yellow. Head and thorax black, abdomen black narrowly surrounded by yellow. Coxae black, trochanters yellowish to brown, rest of legs yellow. Antennae yellow, apex of last segment more or less infuscate.

Pronotum elliptical ( figs 102, 103, 105, 106 View FIGURES 102 – 106 ), with maximum width in the middle, anterior margin regularly convex, sides broadly rounded, no basal corners. Surface of disc impunctate, shiny. Explanate margin broad, impunctate, shiny, transparent with well visible honeycomb structure.

Base of elytra much wider than base of pronotum ( figs 102, 103, 105, 106 View FIGURES 102 – 106 ), humeral angles distinctly protruding anterad, subangulate. Disc almost evenly convex in profile ( fig. 104 View FIGURES 102 – 106 ), with top of convexity in postscutellar area, without impressions. Punctation very fine, on sides slightly coarser than on top of disc, arranged in regular rows, punctures in rows sparse, distance between punctures mostly from two to five times wider than puncture diameter. Marginal row distinct, its punctures distinctly coarser than punctures in central rows. Intervals flat, on top of disc five to seven times, on sides three to four times wider than rows, marginal interval 1.2–1.5 times wider than submarginal one, no humeral or lateral folds. Explanate margin broad, strongly declivous, in the widest part 4.5–5.0 times narrower than disc, surface impunctate or with several very sparse punctures, shiny, transparent with well visible honeycomb structure.

Eyes very large, gena obsolete. Clypeus broad, approximately 1.4 times as wide as long. Clypeal grooves deep, converging in regular triangle, surface of clypeus distinctly convex, with median impressed line, microreticulate, alutaceous, with numerous very small hairs. Labrum narrowly emarginate to 1/5 length. Antennae moderately slim, segments 9–10 approximately 1.3 times as long as wide. Length ratio of antennal segments: 100:47:69:91:63:53:59:56:59:63:109. Segment 3 approximately 1.5 times as long as segment 2 and approximately 0.7 times as long as segment 4.

Prosternum broad in the middle, moderately expanded apically, area between coxae more or less impressed to canaliculate, surface irregular with numerous grooves and few setose punctures, expanded apex slightly convex in the middle, impressed on sides, with slightly irregular sculpture but shiny, with few setose punctures.

Claws with small basal tooth, last segment of tarsi with projecting flanks of apex, dentiform.

Distribution. West Africa east to Ghana ( fig. 15 View FIGURE 15 ).

Remarks. Nominotypical coloured form of Ch. quadriguttata   ( fig. 102 View FIGURES 102 – 106 ) with complete transverse black band across elytral disc is rare and similar only to Ch. opposita   ( figs 87, 88 View FIGURES 87 – 93 ) and the palest form of Ch. nigrosepta   ( figs 75, 77 View FIGURES 74 – 79 ) but both relatives differ in yellow clypeus while in Ch. quadriguttata   it is always black. More common forms of Ch. quadriguttata   with incomplete or without transverse band ( figs 103, 105, 106 View FIGURES 102 – 106 ) are similar to Ch. aequinoctialis   , Ch. circe   and vittate forms of Ch. aubei   . Chiridopsis aequinoctialis   ( figs 24–26 View FIGURES 24 – 30 , 48, 49 View FIGURES 43 – 49 , 31–33 View FIGURES 31 – 36 ) distinctly differs in yellow clypeus and larger size with length usually above 5.5 mm up to 7.6 mm while in Ch. quadriguttata   clypeus is black and the largest specimens reach 5.6 mm in length. Chiridopsis circe   differs in coarse and dense punctation of elytra with punctures in lateral rows almost touching each other, and in pronotal disc yellow with three black spots while in Ch. quadriguttata   punctation of elytra is fine and sparse, interspaces in lateral rows mostly twice wider than puncture diameter, and pronotal disc is usually black with two basal yellow spots or yellow with M –shaped black spot. Vittate forms of Ch. aubei   are the most similar but differ in lateral and sutural black elytral stripes with regular inner margins, never widened in the middle and lateral stripe usually broadly connected with sutural one, if interrupted apically then both lateral and sutural stripes narrow while in Ch. quadriguttata   black lateral and sutural elytral stripes have irregular inner margins, often widened in the middle, lateral stripe is always more or less constricted before apical connection with sutural stripe, sometimes interrupted apically.

Types examined. Lectotype and paralectotype of Cassida quadriguttata   : Senegal, Mhm. ( NRS).  

Syntype (?Holotype) of Coptocycla sexoculata   : no locality label (MM).

Other specimens examined. GAMBIA: Bathurst, 29 II 1968, 1, T. Palm (LU).  

GHANA: Axim , 1 ( MRAC)   ; Mamso , Anenfi, IV –VI 1968, 1 ( MRAC)   ; Takoradi , 11 (8 MRAC, 3 DBET)   .

GUINEA: Guéckédou, 1 (LS).

LIBERIA: Stampfli , 1 ( DBET).  

NRS

Naturhistoriska Riksmuseet

MRAC

Mus�e Royal de l�Afrique Centrale

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Chrysomelidae

Genus

Chiridopsis

Loc

Chiridopsis quadriguttata ( Boheman, 1854 )

Świ, Jolanta 2017
2017
Loc

Chiridopsis quadriguttata

Borowiec 1999: 302
Spaeth 1924: 349
1924
Loc

Chirida quadriguttata:

Spaeth 1914: 127
Weise 1896: 23
1896
Loc

Chirida sexoculata:

Spaeth 1914: 127
Weise 1896: 23
1896
Loc

Coptocycla sexoculata

Spaeth 1917: 444
Harold 1876: 3674
Thomson 1858: 234
1858
Loc

Cassida quadriguttata

Harold 1876: 3657
Boheman 1854: 464
1854