ANITA MALHOTRAROGER S. THORPEMRINALINIBRYAN L. STUART...
23页
查看更多>>摘要：We describe two new species of green pitviper from Southeast Asia that are morphologically similar to Cryptelytrops macrops, but can be distinguished from that species by genetic means, multivariate analysis of morphology and some aspects of coloration. Cryptelytrops cardamomensis sp. nov., is described from southeastern Thailand and the Cardamom Mountains of southwestem Cambodia. Cryptelytrops rubeus sp. nov. has been recorded from southem Vietnam and eastem Cambodia. These species have previously been conftised with C. macrops, hence we also present here a redescription of this species, whose range is now restricted to Thailand, southem and central Laos, and northeastem Cambodia. All three species are present in Cambodia, but have disjunct rangescorresponding to three separate highland regions in southwestem (Cardamom Mountains), northeastem (westem edge of the Kontum Plateau) and eastem (low elevation hills on the westem edge of the Langbian Plateau) Cambodia for C. cardamomensis, C. macrops and C. rubeus respectively. However, there is still considerable morphological variation between geographically separated populations of C. macrops s.s., and greater sampling in southem and northem Thailand in particular may be required before the speciesdiversity of this group is fully clarified.
查看更多>>摘要：Incorporating masculine genitalic characters into Opiliones taxonomy has produced important revisions in the systematics of this group of arachnids. Currently, the inclusion of penis morphology in the description of any taxon of Phalangida (harvestmenwith penis: Eupnoi + Dyspnoi + Laniatores, as used in Pinto-da-Rocha et al. 2007) has become an almost "mandatory" standard (e.g. Acosta et al. 2007), and opilionologists have been working to establish the masculine genital pattern for each family (e.g., Martens 1986; subchapters in Pinto-da-Rocha & Giribet 2007). Still, in the infraorder Grassatores the diversity in penis morphology is enormous and much structure and functionality remains poorly understood. Unfortunately, for many of the described Grassatores, the genitalia are entirely unknown, and this constitutes an important impediment to reliable familial assignation (e.g., in Kury 2003, 41 genera were considered as incertae sedis). This problem is quite relevant to "phalangodid-like" genera, considering their rather homogeneous external appearance but highly diverse genitalia (Martens 1988). One of the most illustrative examples is the subfamily Tricommatinae Roewer, 1912, that has been originally described under Phalangodidae, but which has amale genitalia groundplan matching the Gonyleptoidea, a very distant superfamily (Giribet et al. 2010). Consequently it was raised to a separate family, closer to the Gonyleptidae than to the Phalangodidae (Kury 1992), and finally regarded as a member of Gonyleptidae (Kury 2003).
Neiber, Marco T.Vega-Luz, Ricardo [AuthorE-mail: mactanvegaluz@mactanvegaluz.com]Vega-Luz, Rodolfo...
18页
查看更多>>摘要：Hemicycla (Adiverticula) diegoi n. sp. from the westernmost part of the Teno massif above the Lighthouse at Punta de Teno, Tenerife, Canary Islands is described and compared to conchologically and anatomically similar species in the genus Hemicycla Swainson, 1840. The validity of the new species is corroborated by a phylogenetic analysis including several congeneric species, inter- and intraspecific genetic distances and a morphometric comparison by means of a discriminant function analysis. Hemicycla cf. paivanopsis (Mabille, 1882) and Hemicycla quadricincta quadricincta (Morelet, 1864) from La Gomera and Hemicycla berkeleii (R. T. Lowe, 1861) from Gran Canaria are tentatively placed in Hemicycla s. str. on the basis of a phylogenetic analysis. Furthermore, Eobania vermiculata (O. F. Muller, 1774) is reported as an introduced species in Gran Canaria for the first time.
Neiber, Marco T.Vega-Luz, Ricardo [AuthorE-mail: mactanvegaluz@mactanvegaluz.com]Vega-Luz, Rodolfo...
18页
查看更多>>摘要：Hemicycla (Adiverticula) diegoi n. sp. from the westernmost part of the Teno massif above the Lighthouse at Punta de Teno, Tenerife, Canary Islands is described and compared to conchologically and anatomically similar species in the genus Hemicycla Swainson, 1840. The validity of the new species is corroborated by a phylogenetic analysis including several congeneric species, inter- and intraspecific genetic distances and a morphometric comparison by means of a discriminant function analysis. Hemicycla cf. paivanopsis (Mabille, 1882) and Hemicycla quadricincta quadricincta (Morelet, 1864) from La Gomera and Hemicycla berkeleii (R. T. Lowe, 1861) from Gran Canaria are tentatively placed in Hemicycla s. str. on the basis of a phylogenetic analysis. Furthermore, Eobania vermiculata (O. F. Muller, 1774) is reported as an introduced species in Gran Canaria for the first time.
RICARDO VEGA-LUZRODOLFO VEGA-LUZSTEFAN KOENEMANNMARCO T. NEIBER...
18页
查看更多>>摘要：Hemicycla (Adiverticula) diegoi n. sp. from the westernmost part of the Teno massif above the Lighthouse at Punta de Teno, Tenerife, Canary Islands is described and compared to conchologically and anatomically similar species in the genus Hemicycla Swainson, 1840. The validity of the new species is corroborated by a phylogenetic analysis including several congeneric species, inter- and intraspecific genetic distances and a morphometric comparison by means of a discriminant function analysis. Hemicycla cf. paivanopsis (Mabille, 1882) and Hemicycla quadricincta quadricincta (Morelet, 1864) from La Gomera and Hemicycla berkeleii (R. T. Lowe, 1861) from Gran Canaria are tentatively placed in Hemicycla s. str on the basis of a phylogenetic analysis. Furthermore, Eobania vermiculata (O. F. Miiller, 1774) is reported as an introduced species in Gran Canaria for the first time.
查看更多>>摘要：The worldwide family Mactridae Lamarck, 1809, is well represented in the southwestem Atlantic Ocean. Literature research revealed 22 living nominal species linked to Magellanic forms. Within this context, a taxonomic revision of the species belongingto the family Mactridae that inhabit the Magellanic area was carried out. The analysis was done by using morphological characters of the shell and describing the mantle cavity organs. After extensive fieldwork from Peninsula Valdes to Tierra del Fuego province, seven valid living species were confirmed. Synonymies of those valid forms have been updated, as have their geographic distributions. Redescriptions of the species here considered as valid, i.e.: Mactra fuegiensis Smith, 1905, Mulinia bicolor Gray, 1837, Mulinia byronensis Gray, 1837, Mulinia edulis (King & Broderip, 1832), Mulinia exalbida Gray, 1837, Mulinia levicardo (Smith 1881) smd Darina solenoides (King & Broderip, 1832) are provided.
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