|Auteursrechten: Hernan Tolosa (saguzar)
|Datum Opname: 2007-06-08|
|Camera: Panasonic DMC FZ50|
|More Photo Info: [view]|
|Fotoversie: Originele versie|
|Datum inzending: 2007-08-01 5:38|
|[Richtlijnen voor opmerkingen] Opmerking van de fotograaf|
|found some of these tiny beasts to the flank of rural ways, in dry grass. |
Gusano canasta, Lands Guilding
The worm basket, Oiketicus kirbyi is an insect polífagus that feeds on several cultives and wild plants: cacao (Theobroma cacao L.), oil palm (Elaeis guineensis Jacquin), ), coconut palm (Coconuts nucifera L.), almond tree (Terminalia catappa L), citruses (Citrus spp.), theca (Tectona grandis L.), eucalyptus (Eucalyptus spp.), níspero (japonica Eryobothria) and others.
The Psychidae family
the larvae of the Psychidae family recognize themselves because they construct to baskets of silk and fragments of the plant or substratum. The larvae are cylindrical.
They measure of 8 to 50 mm. The adults present a noticeable sexual dimorphism; the female is neotenic larva appearance and is within a protective basket and the male has appearance of butterfly or moth and is of free life. The pupation happens within the basket and the last larval state ties the basket to some support and soon it invests his position with the head downwards. In the advanced sorts more, the female does not leave the basket, except when it deposits eggs, it falls to the ground and it dies. Inside the basket the females place of 200 to 13000 eggs, depending on the species. All the species are univoltinas, with a long larval period and a period of brief adult in who they are not fed (Stehr 1987). The family is made up of near 600 species, of them 500 are in the Old World; 26 species are in the United States and Canada. The Oiketicus sort contains three species in tropical America. O. kirbyi is distributed in low earth from Argentina to Mexico and Islands of the Caribbean.
Morphologic description of Adult Oiketicus kirbyi:
The females are neotenics, of larviforme appearance, with the small head, without antennas and with the atrophied buccal apparatus; they do not leave the basket, but that is fertilized by the male in the interior of the same one. Before the copula the abdomen of the female is filled with ova which confers a great size to him; after the oviposición its volume is reduced almost to half, leaves the basket and it is dropped to die. The male is a coffee color moth, with clear and dark zones; small wings of 42 mm of spread, body covered with grudges, heavy thorax, thin and tensile abdomen, buccal apparatus atrophied and bipectinadas antennas. The longevity average is of 3,9 days for the females and 3,0 days for the male. During the copula, the male breaks the end of the basket of the female with hooks that he has in the end of the abdomen and penetrates the genital opening extending his abdomen up to 70 mm.
More info at: http://www.asd-cr.com/ASD-Pub/Bol25/Cap2-esp.htm (in spanish)
nglen, Juyona heeft deze opmerking als nuttig gemarkeerd
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