Abstract
Development of Phaeophilacris bredoides Kalt. was studied under stable laboratory conditions: temperature of 26°C, air humidity 60%, and 12L: 12D photoperiod (Knyazev, 1985). The life cycle of Ph. bredoides includes four stages: egg, pronymph, nymph, and adult. The duration of embryonic development is 28 days. The nymphal ontogeny lasts 230 days and consists of 25 instars. The duration of nymphal instars (days) is: 1st—16, 2nd—6, 3rd—8, 4th—10, 5th—10, 6th—15, 7th—10, 8th—8, 9th—9, 10th—11, 11th—11, 12th—8, 13th—9, 14th—10, 15th—7, 16th—9, 17th—7, 18th—7, 19th—7, 20th—10, 21st—11, 22nd—7, 23rd—9, 24th—6, and 25th—9. The duration of adult life is 126 days in males and 125 days in females. Three periods were distinguished in the imaginal ontogeny of males and females: pre-reproductive, reproductive, and post-reproductive. The pre-reproductive period begins with the molt to the adult and ends with the onset of reproductive behavior in males and with the first copulation in females. Its duration is 4 (3–6) days in males and 5 (2–7) days in females. The reproductive period in males starts with the onset of reproductive behavior on the 4th (3rd–6th) day and lasts 119 (98–135) days. In females it begins when they start responding to males’ courtship behavior and lasts 116 (97–133) days. The female reproductive period includes two alternating phases: copulation and egg-laying. The egg-laying phase is initiated by successful copulation. The post-reproductive period in females starts when oviposition ceases and in males, when their reproductive behavior disappears. This period lasts about 3 (2–3) days in males and 4 (2–7) days in females, until the insect dies.
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Original Russian Text © A.M. Lunichkin, M.K. Zhemchuzhnikov, A.N. Knyazev, 2012, published in Entomologicheskoe Obozrenie, 2012, Vol. 91, No. 3, pp. 506–519.
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Lunichkin, A.M., Zhemchuzhnikov, M.K. & Knyazev, A.N. Ontogeny of the cricket Phaeophilacris bredoides Kaltenbach (Orthoptera, Gryllidae). Entmol. Rev. 93, 19–29 (2013). https://doi.org/10.1134/S0013873813010041
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DOI: https://doi.org/10.1134/S0013873813010041