RCAAP Repository

In this paper, the relative growth of Macrobrachium acanthurus (Wiegmann, 1836) (Crustacea, Decapoda, Palaemonidae), is presented; the cephalothorax length/abdominal length, telson length/abdominal length and abdominal length/total length relashionships were determined. The adjusted equations showed a isometric growth pattern. There are no changes in these relationships during the animals growth that may be significant in the maximization of the meat's profit.

In this paper, the fecundity in Macrobrachium acanthurus (Wiegmann, 1836) of the Ribeira de Iguape river (Southern Brazil) (Crustacea, Decapoda, Palaemonidae), is presented. The mean individual fecundity of the population was estimated. Fecundity was related to either length and/or weight. Our data showed that this species presents high fecundity and is thus suitable for comercial culture. The fecundity/length and fecundity/weight relationships obtained are: F = - 14 712 + 2 311,8 L and F = -1493,9 + 798,76 W

Hammeriella gen. n. and, Hammeriellidae fam. n. (Acari, Oribatei) from South America are described. Hammeriella is also recorded from "Tierra del Fuego" (Chile) and from Argentina. The type species of Hammeriella, Pedrocortesia grandis Hammer, is fully redescribed and the cogeneric species, Pedrocortesia australis Hammer, is diagnosed in comparison with the type species, both being transferred to Hammeriella. The redescriptions were made from syntypes deposited in the Zoologisk Museum of Copenhagen, sent on loan for this study.

A new genus Andesperuviella (Acari, Oribatei, Hammeriellidae) is described. The type species, Pedrocortesia dentata Hammer, 1961 is redescribed in detail. The genus, up to the present, is monotypic and restricted to the Peruvian Andes.

A new genus Novazelandiella (Acari, Oribatei, Hammeriellidae) is described. The type species, Pedrocortesella nigroclava Hammer, 1966, New Zealand, is redescribed from the holotype (Zoologisk Museum, Denmark) and from six specimens (Acarology Laboratory, USA) identified as being co-specific with the type material, after being confronted with it. Up to the present time, the new genus is monotypic and restricted to New Zealand, being close to the South American genus Hammeriella Paschoal.

In order to verify the existence of seasonal variations in morphology of Bosmina longirostris and Bosmina hagmanni, samples were taken from Paranoá Lake (Brasília, DF) during 1983. Body length and breadth, antennule, mucro and eye diameter were measured. Alometry rates were also calculated. It was verified that throughout the year both Bosmina species presented variation involving the five measures. The measures, except the antennule and mucro of B. longirostris, depend, at least partially, on the size of the individual and, therefore, on the age structure of the population. The antennule and mucro variations of B. hagmanni were strongly related to alometry rates. For B. longirostris the antennule and mucro variations appeared to be related to phenomena in an embryonic phase.

In this paper, Hyalella caeca sp. n. is described. The types are housed within the carcinological collection of the Museu Nacional, Rio de Janeiro, Brazil. This is the first species of the genus Hyalella Smith, typically caverni-colous, to be found in Brazil.

The male of Elanela hevera Rolston et alii, 1980 and the female of Nocheta adda Rolston et alii, 1980 are described for the first time. A complete study of external genitalia for both sexes of E. hevera and N. adda is also presented.

Twetve external morphological traits and seven traits of food-gathering behavior were studied in africanized and caucasian (A. m. caucasica), bees. Discriminant analysis showed that neither the length of the fourth segment of the abdomen, nor bee weight can be considered as the traits with the highest discriminatory power between africanized and caucasian bees, with any in-bred bees. In the case of in-bred bees the discriminam traits had a lower interorbital width and time to reach the feeder. Multivariate comparisons between the data of in-bred colonies and twenty hibrid colonies, suggest dominance of the genes group of the africanized subspecies.

In this paper is presented, in detail, the morphology of Kronides incumbens (Germar, 1835) (Homoptera, Membracidae).

This paper includes descriptions of the immature stages of Epilachna spreta (Muls., 1850), as well as redescriptions together with certain comments of E. paenulata (Germ., 1824), E. cacica (Guér., 1844) and E. clandestina (Muls., 1850) are presented. Two new species groups have been established and named as "paenulata" and "cacica". A key for the fourth instar larvae of the species commonly found in South Brazil is included.

No summary/description provided

In this paper, two new genera and species of Neotropical Eucerinae (Hymenoptera, Apoidea) are described: Santiago mourei, gen.n., sp.n. (from Paraopeba, MG, Brazil) and Hamatothrix silvai, gen.n., sp.n. (from Santiago del Estero, Argentina).

Narope guilhermei sp. n., from South Brazil is described and illustrated.

Comments on the systematic position and synonymy of the Hesperiidae described by J. Roeber are presented. The Syn. n. are the following: Jemadia gigantea Roeber, 1925 of Nosphistia zonara (Hewitson, 1866), Pyrrhopyga josepha Ploetz, 1879 of Hegesippe luteizona (Mabille, 1877), Phocides palaemonides Roeber, 1925 of Phocides palemon palemon (Cramer, 1777), Phocides xenocrates Bell, 1935 of Phocides vulcanides Roeber, 1925, Phocides parvus Roeber, 1925 of Phocides pialia pialia (Hewitson, 1857), Thymele aulicusi Roeber, 1925 of Astraptes enotrus (Cramer, 1781), Pythonides zonula Mabille, 1889 of Paches loxus loxus (Westwood, 1852), Thespieus chlorocephala Roeber, 1925 of Thespieus lutetia (Hewitson, 1866), Xeniades cecropteroides Roeber, 1925 of Niconiades caeso (Mabille, 1891) and Thracides nanea chiricana Roeber, 1925 of Thracides nanea nanea (Hewtson, 1867). Metron leucogaster leucomelas (Roeber, 1925) is a Comb. n. and a Stat. n. for Zenis leucomelas. Lectotypes are designated for the following species or subspecies: Mimoniades hemitaenia Roeber, 1925, Mimoniades inaequalis Roeber, 1925, Amenis similis Roeber, 1925, Mysoria erythrostigma Roeber, Myscelus nobilis meridionalis Roeber, 1925, Phocides iocularis Roeber, 1925, Phocides parvus Roeber, 1925, Polygonus amyntas pallida Roeber, 1925, Thymele albifasciatus Roeber, 1925, Thymele subfasciatus Roeber, 1925, Thymele aulicus Roeber, 1925, Phyrrhocalles kruegeri Roeber, 1925, Vettius phyllides Roeber, 1925 and Xeniades cecropteroides Roeber, 1925.

Six zoeal stages and the megalopa of the comestible crab Ucides cordatus cordatus (Linnaeus, 1763) are described and illustrated. The larvae were reared in the laboratory at temperature 25 ± 1ºC and water salinity of 24‰; duration of stages and survival rates were measured. Comparisons with the descriptions of the zoeal morphologic characters of Ocypodidae and Gecarcinidae permited to include definitively U. c. cordatus in the family Ocypodidae, subfamily Ocypodinae.

Amblyscartidia trifasciata sp. n. is described from Silva Jardim - RJ, Brazil. (Homoptera, Cicadellidae, Cicadellinae).

No summary/description provided

No summary/description provided

A new genus Nooliodes is described and a new family Nooliodidae is proposed and characterized (Acari, Oribatei). The type species, Plateremaeus glaber Balogh, from Madagascar, is redescribed based on previous description and figures. The new genus is close to Octoliodes Paschoal, 1987 family Pheroliodidae Paschoal.