Chiridopsis flavipennis ( Spaeth, 1902 ), Spaeth, 1902

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: 30-32

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-FFAD-FFE1-FF15-D8C6FEDCFD14

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scientific name

Chiridopsis flavipennis ( Spaeth, 1902 )
status

 

Chiridopsis flavipennis ( Spaeth, 1902)  

( figs 6 View FIGURE 6 , 111, 112 View FIGURES 107 – 114 )

Chirida flavipennis Spaeth, 1902: 460   , 1914: 126.

Chiridopsis flavipennis: Spaeth, 1924: 343   ; Borowiec, 1985 a: 242, 1999: 299. Chiridopsis Rothschildi Spaeth, 1922: 1004   , 1924: 342; Borowiec, 1999: 303, n. syn.

Description. Le: 4.95–5.40 mm, Wi: 4.00– 4.35 mm, Lp: 1.90–2.05 mm, Wp: 2.90–3.45 mm, Le/Wi: 1.22–1.25, Wp/Lp: 1.53–1.68. Body short-oval, males slightly stouter than females.

Dorsum uniformly yellow, only basal edge of pronotum and elytra black ( figs 111, 112 View FIGURES 107 – 114 ). Clypeus in western populations yellow, or yellow with infuscate base, or with brownish basal half and yellow apex, or completely brown, in eastern populations clypeal triangle black, area between the triangle and margin of eye yellow to brown. Thorax in western populations brown, in eastern populations black. Abdomen in western populations brown, broadly surrounded by yellow, in eastern populations black narrowly surrounded by yellow. Legs yellow, except for brown to black coxae, in eastern populations trochanters more or less infuscate. Antennae uniformly yellow.

Pronotum regularly elliptical ( fig. 111 View FIGURES 107 – 114 ) with maximum width in the middle, sides broadly rounded. Pronotal disc microreticulate but shiny. Explanate margin very broad, almost horizontal, smooth and shiny.

Base of elytra much wider than base of pronotum ( fig. 111 View FIGURES 107 – 114 ). Humeri moderately protruding anterad, subangulate. Disc regularly convex, with top of convexity almost in half length ( fig. 112 View FIGURES 107 – 114 ). Postscutellar impressions very shallow, barely marked, no principal or lateral impressions. Punctation regular, fine, well visible on whole disc, punctures in rows dense with interspaces mostly as wide as puncture diameter. Punctures in marginal row twice to thrice coarser than in central rows. Intervals in sutural half of disc four times, on sides twice wider than rows, flat, smooth and glabrous. Explanate margin moderately declivous, in widest part approximately six times narrower than disc, its surface with sparse shallow punctures but appears regular, shiny.

Clypeus 1.3–1.4 times as wide as long, without median groove. Lateral grooves deep, converging in regular triangle. Clypeal plate slightly convex, in eastern populations slightly more convex than in western populations but the convexity is variable within the same population. Surface of clypeus microreticulate, slightly dull, with several small setose punctures. Prosternal collar longer than length of third antennal segment, its sides not angulate. Prosternal process moderately expanded apically, shallowly canaliculate along middle or with shallow impression, its surface smooth or with indistinct irregular sculpture, with very fine, sparse setose punctures. Antennae extending behind basal margin of pronotum by two segments. Length ratio of antennal segments: 100:46:81:73:54:58:62:62:62:65:115.

Claws with large basal tooth.

Distribution. Republic of Congo ( Zaire), Ruanda, Uganda and Kenya ( fig. 6 View FIGURE 6 ).

Remarks. We have examined types of both Ch. flavipennis   and Ch. rothschildi   and did not find any important differences. Specimens of Ch. flavipennis   from mouth of the Congo River have clypeus yellowish-brown while most specimens of Ch. rothschildi   have clypeus black, but we have specimens from eastern Africa with central clypeal plate black but yellowish external parts. Thus, in our opinion, Ch. rothschildi   represents only an infraspecific variation of Ch. flavipennis   and we hereby synonymize it with the latter.

Chiridopsis flavipennis   with Ch. observabilis   and completely yellow aberration of Ch. aubei   (ab. baumanni   ) form a group of very similar species with brown to black clypeus and short-oval to subcircular body ( figs 39 View FIGURES 37 – 42 , 56– 61 View FIGURES 56 – 61 , 111, 112 View FIGURES 107 – 114 ). Identification of these three forms needs comparison with series of properly identified specimens. In Ch. aubei   clypeal grooves run close to the margin of eyes and on top of clypeal triangle converging in obtuse angle ( fig. 21 View FIGURES 20 – 23 ) while in Ch. flavipennis   and Ch. observabilis   clypeal grooves form a regular triangle with sharp top thus between the triangle and inner margin of eyes runs a well visible, convex fold often paler coloured than clypeal triangle ( fig. 20 View FIGURES 20 – 23 ). Of these three similar forms Ch. flavipennis   has intermediate convexity of clypeus, less convex than in Ch. aubei   ab. baumanni   but more convex than in Ch. observabilis   . These taxa require genetic studies as they perhaps represent only local forms of one widely distributed species, or they are cryptic species with some microhabitat preferences.

Types examined. 2 syntypes of Chirida flavipennis   : DEMOCRATIC REPUBLIC OF CONGO ( ZAIRE) Banana-Boma, 1891, M. Tschoffen (1 IRSN, 1 MM)   ; 1 syntype: DEMOCRATIC REPUBLIC OF CONGO ( ZAIRE) Boma, Tschoffen (MM)   ; 2 syntypes: DEMOCRATIC REPUBLIC OF CONGO ( ZAIRE) Kassongo, Stanleyfalls ( IRSN)   .

Lectotype and 9 paralectotypes of Chiridopsis rothschildi   (designated by Borowiec 1999: 303): [ KENYA] Afrique Orient. Angl., Escarpment, 1905, M. de Rothschild (lectotype and 9 paralectotypes MNHN, 3 paralectotypes MM).  

Other speciemens examined. RUANDA: Cyamudongo F., 2°32’S /28°58E, 1750 m, 20 III 2007, 2, T. Wagner (TW); Pref. Cyangugu, env. Nyakabuye, 17–19 III 1995, 1, 1 IV 1995, 1, 22 IV 1985, 1, H. Mühle ( DBET)   ; Nyungwe , Gisakura, 2°26’S / 29°06’E, 2100 m, 21 III 2007, 3, T. Wagner ( DBET) GoogleMaps   ; Nyungwe , Pindura, 2°29’S / 29°14’E, 2250 m, 22 III 2007, 2, T. Wagner ( DBET) GoogleMaps   .

UGANDA: Masindi Distr., Budongo Forest n. Sonso , 19–30 VI 1995, 3, 1–10 VII 1995, 1, 21–30 VII 1995, 1, T. Wagner ( DBET).  

IRSN

Institut Royal des Sciences Naturelles de Belgique

MNHN

Museum National d'Histoire Naturelle

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Chrysomelidae

Genus

Chiridopsis

Loc

Chiridopsis flavipennis ( Spaeth, 1902 )

Świ, Jolanta 2017
2017
Loc

Chiridopsis flavipennis: Spaeth, 1924 : 343

Borowiec 1999: 303
Borowiec 1985: 242
Spaeth 1924: 343
Spaeth 1922: 1004
1924
Loc

Chirida flavipennis

Spaeth 1902: 460
1902