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Vol. 57, 2018
(update: 2018.10.15; 11.19)
New Phylogenetic Analysis of Paraprionospio Caullery
(Polychaeta: Spionidae), with Description of a New Species from the
Gulf of Mexico
Víctor
H. Delgado-Blas1 and Luis F. Carrera-Parra2,*
doi:10.6620/ZS.2018.57-52
1Universidad
de Quintana Roo, División de Ciencias e Ingeniería, Chetumal, Quintana
Roo, 77010, México. E-mail: blas@uqroo.edu.mx
2El Colegio de la Frontera Sur. Depto. Sistemática y
Ecología Acuática. Estructura y Función del Bentos. Chetumal, Quintana
Roo, México
(Received 10 February 2018; Accepted 2
October 2018; Communicated by Benny K.K. Chan)
Víctor
H. Delgado-Blas and Luis F. Carrera-Parra (2018) A cladistic
analysis of Paraprionospio
was conducted based on the revision of some type materials and the
original descriptions of some species. The phylogenetic reconstruction
of Paraprionospio using
parsimony analysis of 45 morphological characters yielded one most
parsimonious tree (CI = 0.45, RI = 0.54). Herein, thirteen Paraprionospio species were
considered to be valid, and one new species was described: Paraprionospio pinnata (Ehlers,
1901), P. inaequibranchia
(Caullery, 1914), P. africana
(Augener, 1918), P. alata
(Moore, 1923), P. treadwelli
(Hartman, 1951), P. lamellibranchia
Hartman, 1974, P. coora
Wilson, 1990, P. tamaii
Delgado-Blas, 2004, P. yokoyamai Delgado-Blas,
2004, P. cordifolia Yokoyama,
2007, P. oceanensis Yokoyama,
2007, P. patiens Yokoyama,
2007, P. cristata Zhou,
Yokoyama and Li, 2008, and P.
dibranchiata
sp. nov. This species is characterized by having two pairs of branchiae
on chaetigers 1-2, the first pair pinnate with few pinnules, the second
one cirriform; and with a long filament at the base of third notopodial
lamella on chaetiger 3. Also, P. alata,
P. treadwelli and P. inaequibranchia were redescribed
based upon type material, and several morphological features were
included to clarify the taxonomic status of P. treadwelli, P. tamaii and P. yokoyamai, which were previously
considered synonyms of P. alata.
A taxonomic key to all Paraprionospio
species is provided.
Key words: Annelida, Polychaetes, Cladistic,
Spionids, Morphology, Redescription.
*Correspondence: E-mail: lcarrera@ecosur.mx
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