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Morphological differences of immature stages between males and females in a Korean wood-feeding cockroach (cryptocercus kyebangensis)

Animal Cells and Systems 2003년 7권 2호 p.105 ~ 109
박융철, 최재천,
소속 상세정보
박융철 ( Park Yung-Chul ) - Seoul National University School of Biological Sciences
최재천 ( Choe Jae-Chun ) - Seoul National University School of Biological Sciences

Abstract


Morphological characteristics of nymphal instars are described for a Korean wood?feeding cockroach, Cryptocercus kyebangensis. Eleven instars, including adults, were tentatively identified. Female adults had apicolateral emargination and a truncated apical median prominence in the seventh stemite, and female nymphs of the other instars except for the last had a narrowly rounded apical median prominence in the seventh stemite. In the last instar, the seventh stemite was partially desclerotized and somewhat shriveled at the start of the emarginated area. In contrast, males showed no emargination in adults, and had a rounded broad apical median in this area of all instars. In the ninth stemite, female nymphs had a medium notch on the caudal margin and styli were separated before reaching adulthood, whereas no such notch was observed in male nymphs. The styli remained prominent in the ninth stemite of male adults.

키워드

Sexual dimorphism; Cryptocercus kyebangensis; Nynphal instar; Morphological characteristics; Nymphal development; Wood-feeding cockroach

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