BLATTARIA - COCKROACHES
Insects in general get a bad rap, but even amongst the insects particularly scathing treatment is saved for the cockroaches. For the most part their reputation is undeserved, only about 30 species (or 1% of all cockroaches) infest human habitations. Cockroaches are omnivores, and it is this non-fussy diet that makes them so adaptable, but add to this some remarkable physiological gifts - the ability to survive without a head for several weeks for example or the capability to feed on the most unlikely of substances such as glue from a postal stamp - and it is no surprise that they are often considered "the only animal that will survive a nuclear war!". Cockroaches do indeed have a resistance to radiation 6 to 15 times that of humans, but this is not extraordinary in relation to other insects. One aspect of cockroach behaviour that leads to infestations is that they leave a scent trail in their faeces, this trail is followed by other cockroaches which are then able to locate food sources more easily. In general they are nocturnal and shun light.
Designed by Paul Smith 2006. This website is copyrighted by law. Material contained herewith may not be used without the prior written permission of FAUNA Paraguay. Photographs on this web-site were taken by Paul Smith, Hemme Batjes, Regis Nossent,
Alberto Esquivel, Arne Lesterhuis, Rebbeca Zarza, José Luis Cartes and Hugo del Castillo and are used with their permission.
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FIGURE 1 - Oriental Cockroach Blatta orientalis female - Encarnación, Departamento Itapúa (Paul Smith August 2007).
FIGURE 2 - Oriental Cockroach Blatta orientalis male - Encarnación, Departamento Itapúa (Paul Smith November 2007).
FIGURE 3 - Oriental Cockroach Blatta orientalis juvenile - Encarnación, Departamento Itapúa (Paul Smith September 2007).
FIGURE 4 - Unidentified sp. male - PN Tte Enciso, Departamento Boquerón (Paul Smith October 2007).
FIGURE 5 - Pachylora ? sp. male - Encarnación, Departamento Itapúa (Paul Smith November 2007).
FIGURE 6 - American Cockroach Periplaneta americana male - Encarnación, Departamento Itapúa (Paul Smith November 2007).
FIGURE 7 - Unidentified sp. female- PROCOSARA, PN San Rafael (Paul Smith March 2008 - ECOSARA Biodiversity Database).
FIGURE 8 - Unidentified sp. male - PROCOSARA, PN San Rafael (Moriz Stiefel April 2008 - ECOSARA Biodiversity Database).
FIGURE 9 - Unidentified sp. female - PROCOSARA, PN San Rafael (Moriz Stiefel April 2008 - ECOSARA Biodiversity Database).
FIGURE 10 - Unidentified sp. - PROCOSARA, PN San Rafael (Moriz Stiefel April 2008 - ECOSARA Biodiversity Database).