ISSN: 2310-2799
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546,196 artículos
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Año:
2020
ISSN:
1852-6098
De Santis, Luis; Vidal Sarmiento de Regalía, Julia A.
Fundación Miguel Lillo
Resumen
The genus ?Debachiella? and the classification of the Aphelinidae (Hymenoptera: Chalcidoidea)?
In this paper the authors describe Debachiella citri new species from Corrientes, reared from Aonidiella aurantii (Mask.) (Homoptera: Diaspididae). The genus Debachiella does not fit into the classification of the Aphelinidae as proposed by De Santis (1946) and not fit into the classification of the Aphelinidae as proposed as an anomalous member of the Aphelininae. The new synonymy of Prospaltellinae Nikolskaja et Jasnosh, 1966, with Pteroptricinae Ashmead, 1904, and the new combination Debachiella brevifuniculata (Viggiani, 1972) for Centrodora brevifuniculata, are established.
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Año:
2020
ISSN:
1852-6098
Coscaron, Sixto
Fundación Miguel Lillo
Resumen
The genus Chrysops Meigen, as it occurs in Argentina is reviewed with keys and illustrations. Sixteen species are recorded: Ch. argentinus Pechuman (female and male), Ch. berta Pechuman (female and male), Ch. brevifascius Lutz (female), Ch. bulbicornie Lutz (female), Ch. crucians Wiedemann (female), Ch. flavoscutellatus Kroeber (female), Ch. flinti n. sp. (female), Ch. laetus Fabricius (female and male), Ch. leucospilus Wiedemann (female and male), Ch. nigricorpus Lutz (female), Ch. paraguayensis Bréthes (female), Ch. patriciae Pechuman (female and male), Ch. trifarius Macquart (female), Ch. uruguayensis Lutz (female and male), Ch. vartans Wiedeman (female) and Ch. variegatus (De Geer) (female).
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Año:
2020
ISSN:
1852-6098
Willink, A.; Ajmat de Toledo, María del V.
Fundación Miguel Lillo
Resumen
?A new species of Gayella (Hym., Masaridae: Gayellinae)?
A new species of Gayella from the high mountains of Argentina and Bolivia is described and a key for the six known species is given.
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Año:
2020
ISSN:
1852-6098
Golbach, R.
Fundación Miguel Lillo
Resumen
A new species of Globothorax Fleut. is described and a key is included for the known species. A provisional key to the known genera of the subfamily Cardiophorinae from Central and South America is also given.
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Año:
2020
ISSN:
1852-6098
Golbach, R.
Fundación Miguel Lillo
Resumen
?Horistonotus latus, new species (Col. Elateridae)?
A new species of Horistonotus Cand. (Col. Elateridae) is described from Argentina and included in a key to Argentine species. A discussion of all Central and South American relatives is provided.
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Año:
2020
ISSN:
1852-6098
Daciuk, Juan
Fundación Miguel Lillo
Resumen
Faunistic and bioecological notes of Península Valdés and Patagonia, XXII. Systematic list of the birds collected and observed in Península Valdés and the maritime coast of Chubut (R. Argentina)?
In this paper, a list of 116 species and subespecies of birds collected and observed in the Valdés Península and maritime littoral of Chubut to Quintano Island, is given. Several citations mean an enlargement of their known ranges. Data about the habitats and new breeding areas are refered too. The principal sites are shown in a map and some pictures of birds document taxidermic material.
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Año:
2020
ISSN:
1852-6098
Quezada, Aurora E.; López, María T.
Fundación Miguel Lillo
Resumen
?Biological observations in organisms found on artificial substrates. Caleta Leandro, Talcahuano, Chile III. Pagurus villosus Nicolet, 1849?
Preliminary information about the breeding season of oviferous females of Pagurus villosus, from Caleta Leandro (36°38?36?S; 73°05?25?W) is given. The paper is based on the examination of more than 30.000 specimens which were captured between January 1969 and November 1971, as they invaded sublittorally submerged wooden-cages. Information on epibiontes on the snail shells Nassarius (Hima) gayi occupied by P. villosus is also given.
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Año:
2020
ISSN:
1852-6098
López Stefoni, Daniel; Toledo Contreras, Gustavo
Fundación Miguel Lillo
Resumen
?Comparative descriptive study of the early larval and cypris stages of Chilean balanomorphs?
The first nauplios phases of chilean species are described; Balanus (Megabalanus) psittacus (Molina, 1782), Balanus (Austrobalanus) flosculus Darwin, 1854, and Elmintus kingi Gray, 1831 (Cirripedia, Balanidae). On the basis of laboratory test, started on adult specimens collected at Estero Chope (11°48?S; 73°05?W), and at the estuary of river Contaco (40°34?S; 73°37?W), the general structure of the body, caudal and abdominal processes, mouth cone and appendages, setation are described comparatively in terms of number, disposition and type of setae, so as to obtain the intra and inter specific differentiating characters. Morphological features which ensure a quick identification of all the phases at group level are also established. A description of the cypris of Balanus psittacus, detailing cirrus structure, adhesive antennae, etc., is included.
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Año:
2020
ISSN:
1852-6098
Zamponi, Mauricio O.
Fundación Miguel Lillo
Resumen
The asexual development of Pseudoparactis tenuicollis Mc Murrich, 1904 (Actiniaria: Actionostolidae) and some considerations on its ecology?
The reproductive biology is known for some species of Actiniaria; this paper deals on the reproduction of Pseudoparactis tenuicollis Mc Murrich, 1904. During the spring months, this species presents a rapid asexual reproduction and all this process takes place on the shell of the mollusk (Brachidontes rodriguezii). Some account of the ecology of this species and illustrations of the anatomy are added.
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Año:
2020
ISSN:
1852-6098
Lozada L., Eliana; Prat V., Gabriel
Fundación Miguel Lillo
Resumen
?Observations on the composition and diversity of fauna in the rocky sub-coastline of Punta Paloma, Arica?
The benthonic fauna of the rocky sub-littoral of Pta. Paloma, Arica, Chile (18°33?S; 70°20?W) was analized. This fauna is composed principally of Mollusca (52,4%), Annelida (16,6%), Crustacea (14,3 %), Echinodermata (9,5%), Brachiopoda (2,4 %), Aetinaria (2,4%) and Protozoa (2,4%). The fauna is widely diversified and there may be observed species living on hard substrate, together with those inhabiting soft substrate. In general terms, the number of individuals in each species is low and the diversity indexes vary between 1,10 bits and 3,11 bits, with an average diversity of 1,82 bits.
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