Dear Members of the Zoological Society of Japan

Two papers scheduled for publication in Volume 41, Issue 5 have been released early.

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Vol. 41, No. 5

ORIGINAL ARTICLES: ECOLOGY

Sperm Size Decreases with Increasing Pheomelanin Pigmentation but Not With the Amount of Glutathione in the Barn Swallow
Masaru Hasegawa, Emi Arai, Hitomi Tanaka, Shosuke Ito, Kazumasa Wakamatsu
Zoological Science 41 (5), (11 July 2024) https://doi.org/10.2108/zs230120
KEYWORDS: pheomelanin, plumage ornaments, pre- and post-copulatory sexual selection, sperm competition

ORIGINAL ARTICLES: DEVELOPMENTAL BIOLOGY

Development of the Pronotal Explanate Margin, a Novel Evolutionary Trait in Tortoise Beetles
Miho Ochiai, Yuta Kurihara, Satoshi Miyazaki
Zoological Science 41 (5), (11 July 2024) https://doi.org/10.2108/zs240026
KEYWORDS: Cassidinae, tortoise beetle, explanate margin, pronotum, postembryonic development