A non-paraphyletic classification of the afrotropical genus Acanthiops Waltz & McCafferty (Ephemeroptera: Baetidae)
- Lugo-Ortiz, C R, Barber-James, Helen M, McCafferty, W P, de Moor, Ferdy C
- Authors: Lugo-Ortiz, C R , Barber-James, Helen M , McCafferty, W P , de Moor, Ferdy C
- Date: 2001
- Language: English
- Type: Article
- Identifier: vital:7006 , http://hdl.handle.net/10962/d1008384
- Description: Acanthiops Waltz & McCafferty (Ephemeroptera: Baetidae) is shown to be a monophyletic grouping defined by an anteromedially emarginate and laterally expanded and flattened pronotum in the larva. Attempts to restrict the concept of Acanthiops to Ac. marlieri (Demoulin) and re-erect Afroptiloides Gillies, syn. n., for Ac. elgonensis Lugo-Ortiz & McCafferty, Ac. griffithsi Lugo-Ortiz & McCafferty, Ac. tsitsa Barber-James & McCafferty, Ac. variegatus (Gillies), Ac. varius (Crass) and Ac. zomba Lugo-Ortiz & McCafferty, are shown to be based on inconsistent and inadequate morphological features that result in a paraphyletic taxonomy. The unofficial separate treatment of Ac. cooperi (Gillies & Wuillot) and Ac. erepens (Gillies) under Platycloeon Gillies & Wuillot is also shown to be paraphyletic. Acanthiops faro Barber-James & McCafferty, sp. n., is described from larvae from Guinea, and is distinguished by the combination of a papillate projection on labial palp segment 2, small tubercles on terga 1-8 and abdominal colour pattern. Acanthiops io Lugo-Ortiz & McCafferty, sp. n., is described from larvae from the Democratic Republic of Congo, and is distinguished by the combination of a papillate projection on palp segment 2, elongate tubercles on terga 1-9 and abdominal colour pattern. The larva of Ac. erepens (Gillies) is redescribed to incorporate morphological features and variability previously not accounted for, and larvae originally assigned to Baetis cataractae Crass are shown to be equivalent to Ac. erepens. New locality data or emendations on locality data are provided for Ac. griffithsi, Ac. tsitsa Barber-James & McCafferty and Ac. varius (Crass).
- Full Text:
- Date Issued: 2001
- Authors: Lugo-Ortiz, C R , Barber-James, Helen M , McCafferty, W P , de Moor, Ferdy C
- Date: 2001
- Language: English
- Type: Article
- Identifier: vital:7006 , http://hdl.handle.net/10962/d1008384
- Description: Acanthiops Waltz & McCafferty (Ephemeroptera: Baetidae) is shown to be a monophyletic grouping defined by an anteromedially emarginate and laterally expanded and flattened pronotum in the larva. Attempts to restrict the concept of Acanthiops to Ac. marlieri (Demoulin) and re-erect Afroptiloides Gillies, syn. n., for Ac. elgonensis Lugo-Ortiz & McCafferty, Ac. griffithsi Lugo-Ortiz & McCafferty, Ac. tsitsa Barber-James & McCafferty, Ac. variegatus (Gillies), Ac. varius (Crass) and Ac. zomba Lugo-Ortiz & McCafferty, are shown to be based on inconsistent and inadequate morphological features that result in a paraphyletic taxonomy. The unofficial separate treatment of Ac. cooperi (Gillies & Wuillot) and Ac. erepens (Gillies) under Platycloeon Gillies & Wuillot is also shown to be paraphyletic. Acanthiops faro Barber-James & McCafferty, sp. n., is described from larvae from Guinea, and is distinguished by the combination of a papillate projection on labial palp segment 2, small tubercles on terga 1-8 and abdominal colour pattern. Acanthiops io Lugo-Ortiz & McCafferty, sp. n., is described from larvae from the Democratic Republic of Congo, and is distinguished by the combination of a papillate projection on palp segment 2, elongate tubercles on terga 1-9 and abdominal colour pattern. The larva of Ac. erepens (Gillies) is redescribed to incorporate morphological features and variability previously not accounted for, and larvae originally assigned to Baetis cataractae Crass are shown to be equivalent to Ac. erepens. New locality data or emendations on locality data are provided for Ac. griffithsi, Ac. tsitsa Barber-James & McCafferty and Ac. varius (Crass).
- Full Text:
- Date Issued: 2001
A taxonomic and ecological review of Pseudocloeon glaucum (Agnew)(Ephemeroptera: Baetidae)
- Lugo-Ortiz, C R, de Moor, Ferdy C, Barber-James, Helen M
- Authors: Lugo-Ortiz, C R , de Moor, Ferdy C , Barber-James, Helen M
- Date: 2000
- Language: English
- Type: Article
- Identifier: vital:7007 , http://hdl.handle.net/10962/d1008385
- Description: Pseudocloeon masai (Lugo-Ortiz and McCafferty), P. nadineae (Lugo-Ortiz and McCafferty) and P. quintum (Agnew) are junior subjective synonyms of P. glaucum (Agnew). Larvae of P. glaucum manifest a wide range of variation in mouthpart morphology, particularly with respect to the development of the distomedial process of segment 2 of the labial palps, body size, general body colour and abdominal colour pattern. Such variation is observed in different cohorts and populations, and explains why several names have been applied to the same species. Larvae of P. glaucum also have considerable ecological tolerance, accounting for the abundance and widespread distribution of the species in the Afrotropical Region. New records from Kenya, Lesotho, Namibia and Zimbabwe are provided.
- Full Text:
- Date Issued: 2000
- Authors: Lugo-Ortiz, C R , de Moor, Ferdy C , Barber-James, Helen M
- Date: 2000
- Language: English
- Type: Article
- Identifier: vital:7007 , http://hdl.handle.net/10962/d1008385
- Description: Pseudocloeon masai (Lugo-Ortiz and McCafferty), P. nadineae (Lugo-Ortiz and McCafferty) and P. quintum (Agnew) are junior subjective synonyms of P. glaucum (Agnew). Larvae of P. glaucum manifest a wide range of variation in mouthpart morphology, particularly with respect to the development of the distomedial process of segment 2 of the labial palps, body size, general body colour and abdominal colour pattern. Such variation is observed in different cohorts and populations, and explains why several names have been applied to the same species. Larvae of P. glaucum also have considerable ecological tolerance, accounting for the abundance and widespread distribution of the species in the Afrotropical Region. New records from Kenya, Lesotho, Namibia and Zimbabwe are provided.
- Full Text:
- Date Issued: 2000
Nigrobaetis Novikova and Kluge (Ephemeroptera Baetidae): first record and new species from southern Africa, with reassignment of one northern African species.
- Lugo-Ortiz, C R, de Moor, Ferdy C
- Authors: Lugo-Ortiz, C R , de Moor, Ferdy C
- Date: 2000
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/452159 , vital:75108 , https://hdl.handle.net/10520/AJA10213589_279
- Description: Nigrobaetis bethuneae sp. n. (Ephemeroptera: Baetidae) is descriptionbed from larvae collected from the Cunene (Kunene) River between Angola and Namibia. The new species represents the first record of Nigrobaetis Novikova and Kluge from southern Africa and a considerable extension of the distribution range for the genus. Nigrobaetis bethuneae is characterized by the presence of a small interantennal carina, arrangement of dorsal setae on the labrum, mandibular denticulation and setation, apicolaterally bluntly pointed labial palp segment 3, absence of hind-wing pads, presence of the first pair of gills, and general abdominal coloration. Ecological data on the new species are provided. The Algerian species Baetis rhithralis Soldan, previously considered to belong in Diphetor Waltz and McCafferty, is transferred to Nigrobaetis, and the biogeographic implications of the new assignment are discussed.
- Full Text:
- Date Issued: 2000
- Authors: Lugo-Ortiz, C R , de Moor, Ferdy C
- Date: 2000
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/452159 , vital:75108 , https://hdl.handle.net/10520/AJA10213589_279
- Description: Nigrobaetis bethuneae sp. n. (Ephemeroptera: Baetidae) is descriptionbed from larvae collected from the Cunene (Kunene) River between Angola and Namibia. The new species represents the first record of Nigrobaetis Novikova and Kluge from southern Africa and a considerable extension of the distribution range for the genus. Nigrobaetis bethuneae is characterized by the presence of a small interantennal carina, arrangement of dorsal setae on the labrum, mandibular denticulation and setation, apicolaterally bluntly pointed labial palp segment 3, absence of hind-wing pads, presence of the first pair of gills, and general abdominal coloration. Ecological data on the new species are provided. The Algerian species Baetis rhithralis Soldan, previously considered to belong in Diphetor Waltz and McCafferty, is transferred to Nigrobaetis, and the biogeographic implications of the new assignment are discussed.
- Full Text:
- Date Issued: 2000
- «
- ‹
- 1
- ›
- »