Cassida bidens Fabricius, 1781

Sekerka, Lukáš & Barclay, Maxwell V. L., 2014, Fabrician types of Cassidinae (Coleoptera: Chrysomelidae) deposited in the Natural History Museum, London, Acta Entomologica Musei Nationalis Pragae 54 (2), pp. 657-684 : 659

Cassida bidens Fabricius, 1781

( Figs 1–3 )

Cassida bidens Fabricius, 1781: 112 .

Type locality. ‘Brasilia’.

Type material examined. SYNTYPE: pinned, ‘ Cassida bidens | Fabr. Spec. 112. n. 32 [w, hw, s, bf]’ ( BMNH).

Status in ZIMSEN (1964). P. 91; No. 1345. ‘London, 1 specimen’.

Original description. ‘C. atra, elytris antice porrectis, spina suturali erecta.

Habitat in Brasilia. Mus. Dom. Banks.

Magna. Thoracis clypeus rotundatus, subemarginatus dorso carinato niger maculis duabus ferrugineis obsoletis. Elytra reticulata, atra, immaculata, basi ultra caput porrecta, carinata, spinaque in medio suturae elongata, acuta, atra nitida. Corpus atrum femoribus anticis intus pallidis.’ ( FABRICIUS 1781).

Current status. Dorynota (Dorynota) bidens ( Fabricius, 1781) .

Remarks. The species was described from Banks’s collection and ZIMSEN (1964) reported only a single specimen in BMNH, probably the only specimen Fabricius had for description. Dorynota bidens has been correctly identi¿ed since its description. There is only one similar species, D. nigra ( Boheman, 1856) , which differs in its uniformly black dorsum with a dark green metallic sheen and a shorter dorsal spine, while D. bidens has dorsum black without metallic sheen and with a small reddish spot on the lateral slope of each elytron, and a long dorsal spine.

Figures

Figs 1–6. 1–3 – Cassida bidens Fabricius, 1781, syntype; 4–6 – C. cincta Fabricius, 1781, lectotype. (1, 4 – habitus dorsal; 2, 5 – habitus lateral; 3, 6 – labels).