Eur. J. Entomol. 105 (4): 719-736, 2008 | DOI: 10.14411/eje.2008.099

Taxonomical revision of the Longitarsus capensis species-group: An example of Mediterranean-southern African disjunct distributions (Coleoptera: Chrysomelidae)

Maurizio BIONDI, Paola D'ALESSANDRO
Dipartimento di Scienze Ambientali, University of L'Aquila, 67010 Coppito - L'Aquila, Italy, e-mails: biondi@univaq.it,

Southern-African Longitarsus capensis species-group, which is closely related to the Mediterranean anchusae species-group is revised. L. capensis species-group includes 15 species, 8 of which are new to science: Longitarsus capensis Baly, 1877, L. cedarbergensis Biondi, 1999, L. luctuosus Biondi, 1999, L. lugubris Biondi, 1999, L. melanicus Biondi, 1999, L. neseri Biondi, 1999, L. transvaalensis Biondi, 1999, L. afromeridionalis sp.n., L. debiasei sp.n., L. grobbelaariae sp.n., L. hexrivierbergensis sp.n., L. malherbei sp.n., L. piketbergensis sp.n., L. rouxi sp.n., and L. sudafricanus sp.n. A key to all the species is presented as well as line drawings of male and female genitalia, scanning electron micrographs of some diagnostic morphological characters, and auto-ecological and zoogeographical data. Relationships within the capensis-group, and between the anchusae and capensis-group are better defined and hypotheses explaining the separate distributions of Mediterranean and south African anchusae and capensis species-groups proposed. Finally, the host-plant shift from native Lobostemon spp. to the introduced plant Echium plantagineum L. shown by some species of the capensis group is also discussed.

Keywords: Chrysomelidae, Alticinae, Boraginaceae, Afrotropical region, Mediterranean area, new species, disjunct distribution

Received: February 1, 2008; Accepted: May 6, 2008; Published: October 24, 2008

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