[Artificial diet for rearing Doru luteipes (Scudder) (Dermaptera: Forficulidae), a predator of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)]. / Dieta artificial para criação de Doru luteipes (Scudder) (Dermaptera: Forficulidae), predador da lagarta-do-cartucho do milho, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae).

A new technique involving an artificial diet and an artificial substrate for oviposition for the rearing of the predator Doru luteipes (Scudder) is suggested. Both adults and nymphs were maintained in petri dishes containing a transparent piece of soda straw filled with moistened cotton and the corresponding food for the biossays. The following treatments were tested: eggs of Spodoptera frugiperda (J.E. Smith), Diatraea saccharalis Fabricius (Lepidoptera: Pyralidae) and Anagasta kuehniella Zeller (Lepidoptera: Pyralidae); insect pupae meal (FPI); Apis mellifera L. (Hymenoptera: Apidae) commercial pollen (PC); FPI + PC, and FPI + cattail pollen [Typha angustifolia L. (Thyphaceae)]. Each treatment had 50 replicates, and food was offered in excess. Treatments consisting of insect pupae meal (FPI), FPI + commercial pollen (PC), and FPI + cattail pollen resulted in nymphal development of 32, 29, and 29 days, with 83, 90 and 100% survival, respectively, and were superior to the PC treatment, with values of 37 days and 67% survival observed for insects reared on commercial pollen. Treatments that included insect pupae flour, either alone or mixed with pollens, were similar to control (S. frugiperda eggs). We conclude that the artificial diets tested and rearing technique are suitable for the artificial rearing of D. luteipes in laboratory conditions.

Dieta artificial para criação de Doru luteipes (Scudder) (Dermaptera: Forficulidae), predador da lagarta-do-cartucho do milho, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) / Artificial diet for rearing Doru luteipes (Scudder) (Dermaptera: Forficulidae), a predator of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)

Uma nova técnica de criação para o predador Doru luteipes (Scudder), envolvendo dietas artificiais e substrato artificial de oviposição é sugerida. Tanto adultos, quanto ninfas foram mantidos em placas contendo um canudinho transparente de refrigerante com algodão umedecido e o respectivo alimento. Foram testados os seguintes tratamentos: ovos de Spodoptera frugiperda (J.E. Smith); ovos de Diatraea saccharalis Fabricius (Lepidoptera: Pyralidae); ovos de Anagasta kuehniella Zeller (Lepidoptera: Pyralidae); farinha de pupa de insetos (FPI); pólen comercial de abelhas Apis mellifera L. (Hymenoptera: Apidae) (PC); FPI + PC, FPI + pólen de taboa [Typha angustifolia L. (Thyphaceae)]. Para as dietas artificiais, observou-se que os tratamentos com farinha de pupas de insetos (FPI), FPI + pólen comercial (PC) e FPI + pólen de taboa resultaram em 32; 29 e 29 dias de período ninfal, com 83; 90 e 100 por cento de sobrevivência, respectivamente, sendo superiores ao tratamento com PC , com 37 dias e 67 por cento de sobrevivência. Os tratamentos com farinha de pupas de insetos, isolada ou em mistura com pólens, foram semelhantes ao padrão com ovos de S. frugiperda. Conclui-se que a criação de D. luteipes com as dietas artificiais testadas, bem como o método de criação, são adequados para sua produção em laboratório.

A new technique involving an artificial diet and an artificial substrate for oviposition for the rearing of the predator Doru luteipes (Scudder) is suggested. Both adults and nymphs were maintained in petri dishes containing a transparent piece of soda straw filled with moistened cotton and the corresponding food for the biossays. The following treatments were tested: eggs of Spodoptera frugiperda (J.E. Smith), Diatraea saccharalis Fabricius (Lepidoptera: Pyralidae) and Anagasta kuehniella Zeller (Lepidoptera: Pyralidae); insect pupae meal (FPI); Apis mellifera L. (Hymenoptera: Apidae) commercial pollen (PC); FPI + PC, and FPI + cattail pollen [Typha angustifolia L. (Thyphaceae)]. Each treatment had 50 replicates, and food was offered in excess. Treatments consisting of insect pupae meal (FPI), FPI + commercial pollen (PC), and FPI + cattail pollen resulted in nymphal development of 32, 29, and 29 days, with 83, 90 and 100 percent survival, respectively, and were superior to the PC treatment, with values of 37 days and 67 percent survival observed for insects reared on commercial pollen. Treatments that included insect pupae flour, either alone or mixed with pollens, were similar to control (S. frugiperda eggs). We conclude that the artificial diets tested and rearing technique are suitable for the artificial rearing of D. luteipes in laboratory conditions.