Chiridopsis octoguttata ( 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: 45-46

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-FF9C-FFD3-FF15-DD70FD5BF9EC

treatment provided by

Plazi

scientific name

Chiridopsis octoguttata ( Boheman, 1854 )
status

 

Chiridopsis octoguttata ( Boheman, 1854)  

( figs 13 View FIGURE 13 , 90, 91 View FIGURES 87 – 93 )

Cassida   octo-guttata Boheman, 1854: 462, 1857: 141, 1862: 343; Gemminger and Harold, 1876: 3656 ( octoguttata   ).

Chirida octoguttata: Weise, 1896 c: 23   (8-guttata); Spaeth, 1914: 127.

Chiridopsis octoguttata: Spaeth, 1924: 352   ; Borowiec, 1999: 301.

Cassida quadriplagiata Boheman, 1854: 460   , 1857: 141, 1862: 343; Gemminger and Harold, 1876: 3657; Spaeth, 1924: 352 (as synonym of Ch. octoguttata   ).

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

Description. Le: 5.45–6.2 mm, Wi: 4.7–5.2 mm, Lp: 2.1–2.3 mm, Wp: 3.3–3.65 mm, Le/Wi: 1.14–1.19, Wp/Lp: 1.53–1.66.

Pronotum yellow ( figs 90, 91 View FIGURES 87 – 93 ), disc mostly black except yellow area above head, two large yellow spots in front of scutellum and small spot anteriorly, sometimes occurs small transverse spot at base of black laterally to large yellow spots. Scutellum yellow with black margins. Elytra black with eight large yellow spots arranged as in fig. 90 View FIGURES 87 – 93 , posterior spots often more or less joined, usually also small yellow spot below humeral callus and in 1/3 length of black marginal interval. Head, ventrites, legs, and antennae yellow.

Pronotum elliptical ( fig. 90 View FIGURES 87 – 93 ), with maximum width in the middle, anterior margin softly 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 ( fig. 90 View FIGURES 87 – 93 ), humeral angles distinctly protruding anterad, subrounded. Disc slightly unevenly convex in profile ( fig. 91 View FIGURES 87 – 93 ), more convex in postscutellar area, with shallow postscutellar impressions. Punctation very fine, on sides coarser than on top of disc, arranged in regular rows, but some rows create wavy lines, distance between punctures from as wide as 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, moderately declivous, in the widest part 4.5–5.0 times narrower than disc, surface impunctate, shiny, transparent with well visible honeycomb structure.

Eyes very large, gena obsolete. Clypeus broad, approximately 1.3 times as wide as long. Clypeal grooves fine but well marked, converging in regular triangle, surface of clypeus distinctly convex, shiny with few very small, setose punctures and often with impressed median line. Labrum minutely emarginate to 1/6 length. Antennae slim, segments 9–10 approximately 1.5 times as long as wide. Length ratio of antennal segments: 100:48:48:63:63:50: 65:55:60:60:113. Segment 3 approximately as long as segment 2 and approximately 0.8 times as long as segment 4.

Prosternum broad in the middle, strongly expanded apically, area between coxae more or less impressed, surface often with shallow transverse grooves but shiny, with few setose punctures, expanded apex flat, without special sculpture or only slightly irregular, shiny, with few setose punctures.

Claws with moderate basal tooth, last segment of tarsi with explanate flanks of apex.

Distribution. West Africa ( fig. 13 View FIGURE 13 ).

Remarks. Chiridopsis octoguttata   belongs to the group of species with elytral pattern forming black reticulation This group comprises also Ch. elongata   , Ch. suffriani   and reticulate forms of Ch. nigrosepta   ( figs 53– 55 View FIGURES 50 – 55 , 74–79 View FIGURES 74 – 79 , 120–122 View FIGURES 120 – 126 ). First two species distinctly differ in explanate margin of pronotum with black basal spots while in Ch. octoguttata   the margin is completely yellow. Reticulate form of Ch. nigrosepta   at first glance looks similar but differs in elytral disc with only one black transverse zigzag band thus yellow forms only 6 large spots, while in Ch. octoguttata   elytral disc with two black transverse zigzag bands, thus yellow forms 8 large spots.

Types examined. Lectotype of Cassida octoguttata   (designated by Borowiec 1999: 301): Seneg., Sommer (NRS); paralectotype of Cassida octoguttata   (designated by Borowiec 1999: 301): Seneg., Signt. (NRS); paralectotype of Cassida octoguttata   (designated by Borowiec 1999: 301): Seneg., Guerin (NRS).

Lectotype of Cassida quadriplagiata   (designated by Borowiec 1999: 301): Seneg, Mhm. (NRS); paralectotype of Cassida quadriplagiata   (designated by Borowiec 1999: 301): Seneg, Mus. Berl. (NRS).

Other specimens examined. BENIN: Zagnanado, 1 ( ZMHU).  

GUINEA: Guinea , 2 ( ZMHU).  

GUINEA BISSAU: Bolama, VI –XII 1899, 1, L. Fea ( MZSNG).  

IVORY COAST: Danane , XII 1930 – IV 1931, 1, Alluaud & Chapuis ( MNHN).  

NIGERIA: Old Calabar , 1 ( DBET).  

SENEGAL: Senegal , 6 ( ZMHU, DBET, MRAC).  

ZMHU

Zoologisches Museum der Humboldt Universitaet

MNHN

Museum National d'Histoire Naturelle

MRAC

Mus�e Royal de l�Afrique Centrale

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Chrysomelidae

Genus

Chiridopsis

Loc

Chiridopsis octoguttata ( Boheman, 1854 )

Świ, Jolanta 2017
2017
Loc

Chiridopsis octoguttata: Spaeth, 1924 : 352

Borowiec 1999: 301
Spaeth 1924: 352
1924
Loc

Chirida octoguttata:

Spaeth 1914: 127
Weise 1896: 23
1896
Loc

Chirida quadriplagiata:

Spaeth 1914: 127
Weise 1896: 23
1896
Loc

Cassida

Harold 1876: 3656
Boheman 1854: 462
1854
Loc

Cassida quadriplagiata

Spaeth 1924: 352
Harold 1876: 3657
Boheman 1854: 460
1854