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Saturday, April 7th, 2018
| Time | Event | ||||
| 7:14a | [Entomology • 2018] Titanogryllus gen. nov. • the Largest Gryllinae Cricket (Orthoptera, Grylloidea, Gryllidae) from the Neotropical Region with Three New Species from the Brazilian Atlantic Forest
Abstract Titanogryllus, a new genus and three new species T. salgado n. gen. n. sp., T. oxossi n. gen. n. sp., and T. oxente n. gen. n. sp. from subfamily Gryllinae (Grylloidea, Gryllidae) are described from the Brazilian Atlantic Forest. This genus is characterized by its very large size, and establishes a new record for the largest known cricket from Neotropical Region. The new taxa are characterized by their external morphology and male and female genitalia. Keywords: Orthoptera, South America, new genus, biodiversity, systematics, taxonomy Titanogryllus Jaiswara, Souza-Dias, Desutter-Grandcolas & de Mello, 2018 Included in the molecular phylogeny of Gryllinae produced by Jaiswara et al. (in preparation) as LDG 281 (Titanogryllus salgado Jaiswara, Souza-Dias, Desutter-Grandcolas & de Mello n. sp.) Etymology. The word titan has its origin in the Greek mythology. The titans were six elder, giant gods, sons of Uranus and Gaia. Titan is also a noun related to one that is gigantic in some attribute. Here, we use the prefix titanto refer to the large size of the species of this new gryllid genus. Type species. Titanogryllus salgado Jaiswara, Souza-Dias, Desutter-Grandcolas & de Mello n. sp. Species included. Titanogryllus salgado Jaiswara, Souza-Dias, Desutter-Grandcolas & de Mello n. sp., Titanogryllus oxossi Souza-Dias & de Mello n. sp., Titanogryllus oxente Souza-Dias & de Mello n. sp. Distribution. Brazilian Atlantic Forest, in the states of Espírito Santo and Bahia. Titanogryllus salgado Jaiswara, Souza-Dias, Desutter-Grandcolas & de Mello, 2018 Etymology. Species name is a noun in apposition after the Brazilian humanist photographer Sebastião Ribeiro Salgado Júnior (born 1944). Titanogryllus oxossi Souza-Dias & de Mello, 2018 Etymology. Ọ ṣọ́̀ọ gỳ (Oxóssi in portuguese) is an orisha of the Yoruba religion in West Africa, and the canbomblé in Brazil. Oxóssi is the spirit associated with the animals, forests, and hunt. Distribution. Atlantic Forest, in Bahia State, municipality of Mucuri.
Titanogryllus oxente Souza-Dias & de Mello, 2018 Etymology. Oxente is a common expression used in the daily speech of the inhabitants of Northeastern Brazil. Oxente is an interjection of astonishment, doubt, frustration, impatience, surprise. The word is a noun in apposition. Ranjana Jaiswara, Pedro G. B. Souza-Dias, Lucas Denadai De Campos, Darlan R. Redü, Francisco De A. G. De Mello and Laure Desutter-Grandcolas. 2018. Titanogryllus n. gen., the Largest Gryllinae Cricket from the Neotropical Region with Three New Species from the Brazilian Atlantic Forest (Orthoptera, Grylloidea, Gryllidae). Zootaxa. 4402(3); 487–507. DOI: 10.11646/zootaxa.4402.3.4 | ||||
| 7:16a | [Ichthyology • 2018] Myloplus tumukumak • A New Species of Myloplus Gill (Characiformes, Serrasalmidae) from the Tumucumaque Mountain Range, Brazil and French Guiana, with Comments on M. rubripinnis
Abstract A new species of Myloplus Gill is described from Eastern Tumucumaque Mountain Range, drainages of the Oyapock and Araguari rivers between Brazil and French Guiana. The new species is diagnosed by having comparatively large scales on the flanks, resulting in lower counts when compared with congeners, i.e., 59 to 70 total perforated scales on lateral line, 31 to 35 longitudinal scales above lateral line, 24 to 29 longitudinal scales below lateral line, and 22 to 26 circumpeduncular scale rows. The new species most closely resembles Myloplus rubripinnis by sharing with this species a general rounded shape, a similar color pattern, and a high number of rays, i.e., 23 to 25 branched dorsal-fin rays and 35 to 38 branched anal-fin rays in the new species (vs. 24 to 25 and 32 to 40, respectively, in M. rubripinnis). After reviewing the available type-specimens of all Myloplus species, M. rubripinnis is re-diagnosed as having higher counts of branched dorsal-fin rays and anal-fin rays combined to tiny scales on flanks, i.e., 85 to 89 total perforated scales on lateral line, 38 to 45 longitudinal scales above lateral line, 33 to 42 longitudinal scales below lateral line, and 30 to 39 circumpeduncular scale rows. Keywords: Pisces, taxonomy, Oiapoque, Araguari, Amapá, Guiana Shield, Ostariophysi  Marcelo C. Andrade, Michel Jégu and Cecile S. Gama. 2018. A New Species of Myloplus Gill (Characiformes, Serrasalmidae) from the Tumucumaque Mountain Range, Brazil and French Guiana, with Comments on M. rubripinnis. Zootaxa. 4403(1); 111–122. DOI: 10.11646/zootaxa.4403.1.6 |
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