New species and records of the earthworm genus Ramiellona (Annelida, Oligochaeta, Acanthodrilidae) from southern Mexico and Guatemala

Fragoso, Carlos; Rojas, Patricia Nieto

doi:10.11646/zootaxa.3753.6.3

Cited by 2 publications

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References 9 publications

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“…La última estimación de la riqueza de lombrices de tierra de México (Fragoso, 2007) indicaba 98 especies descritas, de las cuales 47 eran nativas y 51 exóticas. Desde entonces se han descrito 4 especies más (Fragoso y Rojas, 2007, 2009a, por lo que actualmente, México cuenta con igual número de lombrices de tierra nativas y exóticas (51 spp.) y un total de 102 especies.…”

Section: Diversidadunclassified

Biodiversidad de lombrices de tierra (Annelida: Oligochaeta: Crassiclitellata) en México

Fragoso

Rojas

2014

Revista Mexicana de Biodiversidad

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Resumen. La actualización del inventario de lombrices de tierra de México indica que existen 102 especies descritas, 51 nativas y 51 exóticas. Con las 40 especies nuevas no descritas de la colección IEOL del INECOL se tienen 91 especies nativas recolectadas. Se calcula que el número real de nativas debe rondar las 130 especies, aunque este número podrá ser mayor con el uso de técnicas moleculares. Las especies nativas predominan en los ambientes naturales (71% de registros) y el 41% de estas especies sólo se encuentran en ambientes naturales. Las lombrices exóticas predominan en los ambientes perturbados, aunque también son frecuentes en los bosques templados relativamente bien conservados. La mayor cantidad de especies se encuentra en los estados de Veracruz (70), Chiapas (35), Tamaulipas (27), Tabasco (26) y D. F. ( 25). Entre las exóticas, la especie más común es Pontoscolex corethrurus y entre las nativas Balanteodrilus pearsei. La tasa de descripción de especies indica que en el periodo 1991-1995 se describió la mayor cantidad de especies (13).

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Section: Diversidadunclassified

Biodiversidad de lombrices de tierra (Annelida: Oligochaeta: Crassiclitellata) en México

Fragoso

Rojas

2014

Revista Mexicana de Biodiversidad

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Lavellodrilus notosetosus sp. nov. (Annelida, Crassiclitellata, Acanthodrilidae): a new Mexican earthworm with uncommon characters, revealed by a preliminary revision of subfamily Acanthodrilinae

Fragoso

Rojas

2016

Zootaxa

907

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A new acanthodriline earthworm species, Lavellodrilus notosetosus sp. nov., is described from tropical rain forests of southern Mexico. The new species is placed within the genus Lavellodrilus by the presence of mesial spermathecal pores. It is separated from other species of the genus by the dorsal location of setae cd in most of the body, last hearts in segment 13, first intestinal segment in 20 and genital setae in segment 12. A preliminary morphological revision of all genera and species of Acanthodrilinae was undertaken in order to: i) evaluate if the mesial spermathecal pores justify the status of Lavellodrilus, ii) determine how common (expressed as percentages of species having the character) the diagnostic characters of the new species are in the subfamily, iii) clarify if these characters exhibit a geographical pattern, and iv) contribute towards a comprehensive analysis of the Acanthodrilinae. In this revision, species were separated in nine geographical regions: USA, northern Mexico, southern Mexico, Caribbean Islands (northern hemisphere), and South America, South Africa, Madagascar, Australia, New Zealand, New Caledonia and Antarctic Islands (southern hemisphere). As a result of the revision it was found that among the 511 recognized species of Acanthodrilinae only 11 species have a mesial location of the spermathecal pores, in two cases probably representing monophyletic groups (Lavellodrilus and a group of South African Parachilota species). It was also found that the distinguishing characters in L. notosetosus sp. nov., notably the location of last hearts, genital setae and the first intestinal segment, are uncommon characters in the acanthodriline earthworm fauna of southern Mexico and Central America, but more frequent in North America, the Caribbean, and the southern hemisphere. We conclude that the acanthodrilines from the northern hemisphere are morphologically more similar to those from Australia, New Zealand, and New Caledonia than to those of South Africa and South America.

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New species and records of the earthworm genus Ramiellona (Annelida, Oligochaeta, Acanthodrilidae) from southern Mexico and Guatemala

Cited by 2 publications

References 9 publications

Biodiversidad de lombrices de tierra (Annelida: Oligochaeta: Crassiclitellata) en México

Biodiversidad de lombrices de tierra (Annelida: Oligochaeta: Crassiclitellata) en México

Lavellodrilus notosetosus sp. nov. (Annelida, Crassiclitellata, Acanthodrilidae): a new Mexican earthworm with uncommon characters, revealed by a preliminary revision of subfamily Acanthodrilinae

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