Fotos / Sonidos

Qué

Escarabajos Y Parientes (Orden Coleoptera)

Observ.

josev_ge

Fecha

Noviembre 14, 2021 11:20 AM -03

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Observ.

bellbird20

Fecha

Mayo 12, 2021 09:26 PM -04

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camilamagro

Fecha

Octubre 25, 2021 10:09 AM -03

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Observ.

mariana912

Fecha

Diciembre 13, 2021 01:44 PM -03

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Observ.

danielmesa1

Fecha

Febrero 3, 2022 05:03 PM -05

Descripción

Larvas de escarabajo alimentándose entre raíces de orquídeas. Algunas han entrado en el proceso de metamorfosis.

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Observ.

caiocrelier

Fecha

Diciembre 15, 2020 12:00 AM -03

Fotos / Sonidos

Fecha

Diciembre 2016

Descripción

Fungus beetle. It wipes a leg across itself in the second and third pictures.

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Fecha

Noviembre 28, 2021 12:40 PM -03

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Qué

Aceitilla de Los Andes (Bidens andicola)

Observ.

marceloamores

Fecha

Octubre 24, 2021 08:45 AM -05

Descripción

BIDENS ANDICOLA H.B.K., Nov. Gen. et Sp. 4:237 (186). 1820; B. andicola H.B.K. vars. normalis and heterophylla O. Kuntze, Rev. Gen. PI. 3^II^: I36. 1898; B. fruticulosa Mey. and Walp., Nov. Act. Nat. Cur. 19 Supplem. I. 271. 1843.

Descript. amplific.- Herba perennis, semi-procumbens vel etiam erecta, valde hispido-pubescens vel fere glabra, ramosa, 2-8 dm. alta, caulibus parce angulatis. Folia 1-7 cm. longa, valde polymorpha; nunc indivisa, ovata, serrata, sessilia vel alato-petiolata, ad apicem obtusa vel subacuta; nunc tripartite vel 1-3-pinnata foliolis ovatis vel lanceolatis vel linearibus et ad apicem sensim vel abrupte apiculatis. Capitula ramos terminantia, longe pedunculata, radiata; pansa ad anthesin 2-4 vel rarius etiam usque ad 5.5 cm. lata, 0.7-1.4 cm. alta. Involucrum perspicue hispidum, bracteis ex-terioribus 8-10, lanceolatis vel lineari-oblongis, ciliatis, supra saepe glabratis, apice plerumque obtusis, quam interioribus lanceolatis dense hispidis plerumque multo brevioribus. Flores ligulati saepius 8, lutei, ligula elliptico-oblanceolati, apice plerumque minute 3-denticulati, 1.2-2.5 cm. longi. Achaenia tenuiter linearia, inferne sensim attenuate, obcompresso-quadrangularia, sulcata, supra plus minusve erecto-hispida, fusco-nigra, corpore 0.7-1.4 cm. longa et 0.4-1 mm. lata et paleas demum superantia, apice bi- (vel pauca tri-) aristata, aristis tenuibus, brunneo-stramineis vel rubescentibus, re-trorsum hamosis, 1.7-3 mm. longis.

BIDENS ANDICOLA var. DECOMPOSITA O. Kuntze, I.c.; B. macrantha Griseb., Abhandl. Goett. I9:I38 I874; B. grandiflora Balb. var. breviloba 0. Kuntze, I.c.-Folia 2-3-pinnatisecta, usque ad I dm. longa, achaeniis superne valde attenuato-elongata.

For many years the identity of the South American Bidens andicola has been obscured for herbarium workers by the great multiplicity of foliage forms encountered. WEDDELL, as early as 1856 (Chloris And. 1870) described it as a polymorphous plant ("Plante polymorphe et très repande dans la chaine, mais presque exclusivement alpestre"). Later, OTTO KUNTZE, who like WEDDELL had collected in South America, commented upon the variability of the leaves ("Eine robuste Art mit einfach oder mehrfach ternatisecten Blättern, mittelgrossen gelben Strahlblüthen, ziemlich grossen Blüthenköpfen, äusseren zottig behaarten Involucralbracteen etc., aber in Bezug auf Blatttheilung wie manche andere Bidens-Art sehr variabel"; Rev. Gen. Pl. 3^II^: 136. 1898). In herbaria the numerous foliage forms are seen to simulate corresponding forms of B. triplinervia H.B.K. (B. humilis H.B.K., B. crithmifoliac H.B.K., etc.), and this has led often to confusion between the two species. Recently I was enabled, through the courtesy of OTTO BUCHTIEN (cf. SHEREFF, BOT. GAZ. 76: 151. 1923), to study a great number of specimens collected by him and displaying a wide range of variation. From these (all in Herb. Field. Mus.) and many others, totalling more than two hundred specimens, the preceding descriptions are drawn. It was found that sometimes, in poorly developed material, distinction from B. triplinervia is apparently impossible. In well developed material, however, the distinctions are usually very definite, B. andicola being coarser, its thicker heads having commonly about eight instead of commonly about five rays[4], etc. B. andicola has the paleae shorter than the mature achenes and this character separates it from the surprisingly similar aggregation of Mexican forms (Purpus 1547, 1548, 2637, 4135, 5089, 5620; Rose and Painter 6666, 7949; Pringle 4915; E. W. Nelson 3220, etc.) that in late years have passed erroneously under the name B. daucifolia DC. In the latter[5] the paleae are usually very blackish above and commonly surpass the mature achenes.

Occasionally a form of B. andicola is found with the leaves highly compound and the achenes strongly narrowed above, somewhat like those of Cosmos. If it were not for various connecting forms this would seem to be specifically distinct. KUNTZE, who himself collected specimens of it, referred at least one of them, a plant from Cochabamba, Bolivia (Herb. N.Y. Bot. Gard.) to B. andicola, naming it var. decomposita. In a careless moment he named a precisely identical form from between Cochabamba and Rio Juntas, Bolivia (Herb. N.Y. Bot. Gard.) B. grandiflora Balb. var. breviloba, although B. grandifjora is a Mexican species and is not known to occur in South America.

[4] Unfortunately, B. triplinervia produces at times an 8-rayed form. Discussion of this form must be deferred until a later date.

Sherff, E. E. (1926). Studies in the Genus Bidens. VII. Botanical Gazette, 81(1), 25-54.>>

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Observ.

gasperinbio

Fecha

Septiembre 19, 2021 10:38 AM -03

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rstlaurent

Fecha

Agosto 29, 2021 07:25 PM EDT

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egiehl

Fecha

Diciembre 16, 2007 12:58 PM -02

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mateus21

Fecha

Abril 28, 2020 03:05 PM -03

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Polillas Tigre (Tribu Arctiini)

Observ.

anderson62

Fecha

Noviembre 19, 2020 04:04 PM -03

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Arañón del Monte (Polybetes pythagoricus)

Observ.

wellington2902

Fecha

Octubre 24, 2020 10:36 AM -03

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Observ.

flsantos

Fecha

Octubre 14, 2008 11:53 PM -04

Descripción

Host plant: Calliandra tweediei Benth. [Fabaceae]. The nympha is camouflaged with the leaflets.

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Huairavillo (Ixobrychus involucris)

Observ.

edithester

Fecha

Octubre 1, 2020 09:23 AM -03

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isadoraquintana

Fecha

Agosto 28, 2020 12:28 AM -03

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isadoraquintana

Fecha

Agosto 4, 2020 06:07 PM -03

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rontavius

Fecha

Junio 28, 2020 05:08 PM -03

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Geco Casero Tropical (Hemidactylus mabouia)

Observ.

onildo_marini

Fecha

Mayo 25, 2020 10:10 AM -03

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Observ.

sitiocandeias

Fecha

Febrero 19, 2020

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Observ.

tsssss

Fecha

Julio 2019

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Qué

Milano Muslirrufo (Harpagus diodon)

Observ.

joaoquental

Fecha

Enero 28, 2020 11:19 AM -03

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Geco Casero Tropical (Hemidactylus mabouia)

Observ.

jeffharding

Fecha

Mayo 22, 2014 08:53 AM PDT

Descripción

See the full description here: Herpetological Review 47(1), 2016
HEMIDACTYLUS MABOUIA (Tropical House Gecko). PREDATION, Vecchi and Harding (2016)

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Achará (Stilpnia preciosa)

Observ.

lexthelorax

Fecha

Enero 15, 2020 09:22 AM -02

Descripción

This juvenile is sibling to the one in the previous post, and the offspring of the adult female with a similar infection (posted earlier in Jan 2020)

Fotos / Sonidos

Observ.

fmiudo

Fecha

Octubre 29, 2019 07:44 AM -03

Descripción

Species not registered I guess.