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Annals of the Entomological Society of America, 1968
Both the Blattoidea and Blaberoidea probably evolved from a stock in which 3 or more oocytes in an ovariole contained yolk at the time of oviposition. In the Blattoidea, the line that did not evolve viviparity, the maximum number of oocytes containing yolk (Zone V) per ovariole is 2 or 3. The superfamily Blaberoidea, in which viviparity evolved, shows
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Both the Blattoidea and Blaberoidea probably evolved from a stock in which 3 or more oocytes in an ovariole contained yolk at the time of oviposition. In the Blattoidea, the line that did not evolve viviparity, the maximum number of oocytes containing yolk (Zone V) per ovariole is 2 or 3. The superfamily Blaberoidea, in which viviparity evolved, shows
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Annals of the Entomological Society of America, 1968
The evolution of ovoviviparity and viviparity in the Blattaria necessitated a change from a hard rigid ootheca that was dropped shortly after its formation, to a soft, flexible, reduced egg case which was retracted internally into a uterus. Such changes have taken place in the oothecae of the Blaberoidea (Polyphagidae, Blattellidae, Blaberidae), the ...
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The evolution of ovoviviparity and viviparity in the Blattaria necessitated a change from a hard rigid ootheca that was dropped shortly after its formation, to a soft, flexible, reduced egg case which was retracted internally into a uterus. Such changes have taken place in the oothecae of the Blaberoidea (Polyphagidae, Blattellidae, Blaberidae), the ...
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Interspecific Mating in Blattaria
Annals of the Entomological Society of America, 1970No matings occurred in the laboratory between species of 4 genera (Blaberus, Byrsotria, Eublaberus , and Archimandrita) of Blaberinae. Although several matings took place among 4 species of Blaberus , and among 5 species of Blattella , mechanisms responsible for reproductive isolation were quite effective among the above genera of Blaberinae, 4 species
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The ocellus of the cockroach, Periplaneta americana (Blattariae)
Cell And Tissue Research, 1976The ocelli of Periplaneta americana were studied by light and electron microscopy. The view that the ocellus of the cockroach represents a degenerated structure can no longer be supported. All organelles necessary for function are present. The club-shaped retinular cells lie homogeneously distributed in the cupule of the ocellus.
G, Weber, M, Renner
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Blattaria of Colombia: List and distribution of genera
Zootaxa, 2006Few scientists have dedicated themselves to the study of Colombia’s cockroach diversity. As a result, there are large gaps in the taxonomic knowledge of Colombian cockroach fauna that make species identification difficult and little information is available on their geographic distribution.
Vélez, Andrés +2 more
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Control of oötheca formation and oviposition in Blattaria
Journal of Insect Physiology, 1974The brain is not required for oviposition in five species of Blaberidae; the control centre for formation, 90° counterclockwise rotation, and retraction of the ootheca lies in the abdomen. A similar centre controls ootheca formation and 90° clockwise rotation in Blattella germanica (Blattellidae).
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Hemolymph clotting in the cockroachLeucophaea maderae (Blattaria)
Journal of Comparative Physiology B, 1984The clotting of the hemolymph of the cockroach,Leucophaea maderae (Blattaria) was studiedin vitro. Isolated hemolymph plasma and hemocytes were mixed under various conditions to analyze the effect of specific ions, inhibitors, and other factors on clotting.
Horst Bohn, Barbara Barwig
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Skotodormancy in Verbascum blattaria Seed
Flora, 1975Summary Since Verbascum blattaria was the only species out of 21 whose seed germinated after being buried for 90 years in W. J. B eal's long-term viability experiment, further seed germination tests were carried out with this species to study the requirements for induction and reversion of dormancy.
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Thysanoptera and Dictyoptera, Suborder Blattaria
1984The order Thysanoptera (meaning fringe-winged), known as thrips, comprise about 5000 species with a worldwide distribution. Although mainly phytophagous, some species are predatory on other arthropods and others can occasionally cause lesions on man’s skin.
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