Browsing Biología by Title
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Natural History and Larval Behavior of the parasitoid Zatypota petronae (Hymenoptera: Ichneumonidae)
(2007)The koinobiont ectoparasitoid Zatypota petronae Gauld (Ichneumonidae) parasitizes medium-sized immatures of the cobweb spider Theridion evexum Keyserling (Theridiidae). Zatypota petronae apparently attacks the spider inside ... -
Natural history, courtship, feeding behaviour and parasites of Theridion evexum (Araneae: Theridiidae)
(2007)Theridion evexum constructs webs in the understory of wet middle-elevation forests in Costa Rica. The spiders construct retreats by curling a leaf and produce a mesh in front of the opening. Long, more or less vertical ... -
Neither insects nor wind: ambophily in dioecious Chamaedorea palms (Arecaceae)
(2014)Pollination of Neotropical dioecious trees is commonly related to generalist insects. Similar data for non‐tree species with separated genders are inconclusive. Recent studies on pollination of dioecious Chamaedorea palms ... -
Neotropical flowering epiphyte diversity: local composition and geographic affinities
(2013)Worldwide, the highest diversity of vascular epiphytic plants resides in the Neotropics. The general pattern of taxonomic composition of the neotropical epiphytic flora has been described, but information regarding the ... -
Neotropical freshwater crabs (Decapoda: Pseudothelphusidae) shred leaves
(2020)Freshwater crabs are macroconsumers that are commonly found in Neotropical headwater streams that may play a key role in energy flow and nutrient cycling in detrital food webs. Although studies have examined the feeding ... -
Nephila clavipes spiders (Araneae: Nephilidae) keep track of captured prey counts: testing for a sense of numerosity in an orb-weaver
(Animal Cognition DOI 10.1007/s10071-014-0801-9, 2014-08-28)Nephila clavipes golden orb-web spiders accumulate prey larders on their webs and search for them if they are removed from their web. Spiders that lose larger larders (i.e., spiders that lose larders consisting of more ... -
Nest initiation by multiple females in an aerial-nesting orchid bee, Euglossa cybelia (Apidae: Euglossini)
(2018)Among orchid bees that have been observed, nest initiation by multiple females is rare, and has never been reported from an aerial-nesting species. Here, we document nest initiation by multiple females in the aerial-nesting ... -
Nest Usurping Occurrence Of The Piratic Flycatcher (Legatus Leucophaius) In Southwestern Costa Rica
(2009)El Mosquerito Pirata (Legatus leucophaius) roba nidos colgantes o en forma de domo hechos principalmente por tiranidos o icteridos, sin embargo la frecuencia con la cual este mosquero se roba los nidos de otras especies ... -
Neurobehavioral Effects of Restricted and Unpredictable Environmental Enrichment in Rats
(2020-05)To study how motivational factors modulate experience-dependent neurobehavioral plasticity, we modify a protocol of environmental enrichment (EE) in rats. We assumed that the benefits derived from EE might vary according ... -
Neuropsychological Test Performance in Cognitively Normal Spanish-speaking Nonagenarians with Little Education
(2016-06)To find associations of age, sex, and education with neuropsychological test performance in cognitively normal Spanish-speaking Costa Rican nonagenarians with little education; to provide norms; and to compare their ... -
Neutralization of proteolytic and hemorrhagic activities of Costa Rican snake venoms by a polyvalent antivenom
(1985)The polyvalent antivenom produced at the Instituto Clodomiro Picado, Costa Rica, was tested for its capacity to neutralize proteolytic and hemorrhagic activities of ten Costa Rican crotaline venoms. In experiments with ... -
New additions to the myxobiota of Peru
(2011-11)Recent efforts to study myxomycetes in many areas of the world have resulted in a considerable increase in the number and quality of regional species lists, especially during the last decade. However, in South America ... -
New combinations and synonyms in the Maxillariinae (Orchidaceae)
(2013)Twelve orchid species previously described in the genus Maxillaria are transferred to Heterotaxis, Inti, Pityphyllum, and Sauvetrea. In addition, 19 new heterotypic synonyms in Maxillariinae are presented; these and a few ... -
New data about the Costa Rican aphid fauna (Hemiptera, Aphididae)
(2012-12)New data about the Costa Rican aphid fauna (Hemiptera, Aphididae). Graellsia, 68(2): 305-312. Aphids were collected from 39 locations throughout Costa Rica, representing a wide altitudinal range, and from both crops and ... -
New insights into the molecular phylogeny of the swimming crabs of the genera Portunus Weber, 1795 and Achelous De Haan, 1833 (Brachyura: Portunidae) of the Americas
(2018)Earlier studies of swimming crabs (family Portunidae) in the Americas suggested polyphyly of Portunus Weber, 1795. Our previous molecular analyses provided evidence for a subdivision of the genus, resulting in a reassignment ... -
A new phytophagous species of Eurytoma (Hymenoptera: Eurytomidae) attacking Werauhia gladioliflora (Bromeliales: Bromeliaceae)
(2004)Eurytoma werauhia Gates, new species, is described and illustrated. This species was reared from the floral buds of Werauhia gladioliflora (Wendl.) (Bromeliales: Bromeliaceae), in Costa Rica. This plant represents a new ... -
A New Quararibea (Malvaceae) from the Caribbean Lowlands of Costa Rica
(2018)We describe and illustrate a new species of Quararibea Aubl. from Costa Rica. Quararibea reflexipetalaCascante, J. Sánchez-Gonz. & W. S. Alverson is distinguished by its pleated petals with strongly reflexed and coiled ... -
New records of Araceae for Costa Rica and Panama
(2020-05)Four species are documented for the first time for the Costa Rican flora: Anthurium curvispadix, Anthurium palosecense, Monstera integrifolia, Monstera spruceana. Two species are first documented for the Panamanian flora: ... -
New records of genera and species of myxomycetes (Amoebozoa) from the Neotropics
(2018-05-11)During feld surveys of myxomycetes in Central America, 2 previously unrecorded genera and 4 species, viz. Craterium muscorum Ing, Dictydiaethalium dictyosporum Nann.-Bremek., Physarina echinocephala Höhn, and Stemonaria rufpes, ... -
New records of Gerromorpha (Insecta: Hemiptera: Heteroptera) from Costa Rica
(2014-02-01)The Gerromorpha from Costa Rica are poorly studied, except the Gerridae. Aiming to fill this gap, specimens collected across the country were examined. Lipogomphus leucostictus, Hydrometra alloiona, H. australis, H. ...