Abstract
The Turkestan cockroach, Blatta lateralis (Walker) is an invasive urban pest prevalent throughout the Southwestern United States. Despite the presence of this cockroach in peridomestic areas, there is limited information on strategies that can be utilized by pest management professionals (PMPs) to effectively manage populations of this pest. We evaluated the efficacy of dry residues of liquid insecticides commonly used for household and structural insect pest control: Tandem (0.10% thiamethoxam, 0.03% lambda-cyhalothrin), Transport GHP (0.05% acetamiprid, 0.06% bifenthrin), Temprid SC (0.10% imidacloprid, 0.05% beta-cyfluthrin), Demand CS (0.06% lambda-cyhalothrin), Talstar P (0.06% bifenthrin), and Phantom (0.5% chlorfenapyr) on three different substrates against Turkestan cockroach nymphs. Except for Phantom and Talstar P, all insecticide formulations killed 100% of the cockroaches on concrete, 89–100% on tile, and 77–100% on wood within 4 days. The rate of cockroach mortality varied according to the substrates to which they were exposed. Temprid SC and Transport GHP killed cockroaches faster on tile than wood. Tandem provided a faster mortality rate than Transport GHP and Temprid SC on concrete. Demand CS and Tandem killed cockroaches at similar rates on the three substrates. This study provides information to guide PMPs in their selection of insecticide formulations for the management of Turkestan cockroach infestations.
Highlights
The Turkestan cockroach, Blatta lateralis (Walker) (Blattodea: Blattidae) is a peridomestic cockroach that inhabits arid and semi-arid areas of the world
Our results revealed that the majority of tested insecticides provided high efficacy on all tested substrates, the rates at which cockroach mortality occurred varied across different insecticides and substrates
Selection of proper insecticide formulations based on the substrates found in Turkestan cockroach hiding places, application of baits [10], along with the incorporation of non-chemical methods such as structural modification, exclusion, trapping, physical removal and natural products will increase the chance of a satisfactory reduction of Turkestan cockroach populations [20,38]. This laboratory study compared the efficacy of commonly used insecticide formulations against
Summary
The Turkestan cockroach, Blatta lateralis (Walker) (Blattodea: Blattidae) is a peridomestic cockroach that inhabits arid and semi-arid areas of the world. Turkestan cockroaches were first detected in 1978 at a military base in Lathrop, California, and it is believed that initial infestation occurred when military equipment was brought back from Middle. Infestations of this cockroach have established in desert regions of most other southern states, such as Arizona [6], New Mexico [7], Texas [8], and Georgia [9]. Anecdotal accounts by extension entomologists and pest management professionals (PMPs) indicate that Turkestan cockroaches are the most common outdoor cockroach species in many urban areas in the Southwestern United States. In Southern California, the Turkestan cockroach is a prevalent outdoor nuisance pest occupying similar habitats to that of the Oriental cockroach (Blatta orientalis, L.) [10]. Recent studies suggested that Oriental cockroaches are being displaced as major outdoor pests
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