The German cockroach Blattella germanica is obviously one of the most spread household pests in the world, and is now virtually impossible to sustain outside human constructions. The double-striped cockroach B. bisignata, on the other hand, is limited to Southeast Asia and mostly living in the open space, yet is able to establish in cockroach-free households, too. In this article, we develop a ...

Ann. Entomol. Soc. Am. 81(3): 432-436 (1988) ABSTRACT The Asian cockroach, Blattella asahinai Mizukubo, a close relative of the German cockroach, B. germanica (L.), has been discovered in over 900 km from Tampa to Lakeland, Fla., and is prevalent in citrus groves, wooded areas, lawns, and homes. Differentiation of the two species is best accomplished by the diagnostic behavior of the Asian cock...

W hich urban pest is the most difficult to control? Most PMPs say ants. But the answer to this question has shifted completely over the past 20 years — from cockroaches to ants. Today, few people consider the German cockroach a difficult pest to manage. What made the change is the invention of highly effective baits, in particular, gel baits. Then, the question is, why is the German cockroach s...

The cockroach represents one of the most common sources of indoor allergens worldwide, and 40%-60% of patients with asthma in urban and inner-city areas possess IgE antibodies to cockroach allergens. In Korean homes, four cockroach species have been found, of which the most commonly encountered is the German cockroach. The pathogenic mechanism underlying the association between cockroach allerg...

In Part 1, we examined the edcroach’s morphology and behavior and the link to allergic reactions in humans. In Part 2, we examine how scientists are attacking the problem of cockroach infestations via pesticides and artificial analogs of the insect’s hormones and pheromones. Four Cirdon Cfassics@J relating to research on cockroach development and gnnwh are discussed, and lSI@ research-front dat...