Amami Whipscorpion

奄美鞭蠍 / Amami whipscorpion / アマミサソリモドキ (Typopeltis stimpsonii)

Species information

Scientific name: Typopeltis stimpsonii
Japanese name: アマミサソリモドキ
Chinese name: 奄美鞭蠍
English name: Amami whipscorpion
Origin: Iheyajima, Tokunoshima, Amami Oshima, Tokara Islands, Osumi Islands (Kuchinoerabujima, Iojima, Takeshima), Satsuma Peninsula, Kami-Koshikijima

Ecology and description

The whipscorpion releases an acidic gas containing acetic acid from its tail as a defense against predators. This species is endemic to Japan but has become an introduced species in certain areas due to human activities, such as in Ushibuka, Amakusa City.

Distribution reference:
National Institute for Environmental Studies Invasive Species Database

Reference for distinguishing male and female appearance (Taiwan whipscorpion):
https://announce.ndhu.edu.tw/message_3/1499331269/Newsletter%20106.06.pdf

Courtship behavior reference:
https://ja.wikipedia.org/wiki/サソリモドキ

Field photographs taken during our tours, with observation dates

Amami whipscorpion (Typopeltis stimpsonii) May 20, 2022 Tokunoshima
May 20, 2022, Tokunoshima
Amami whipscorpion (Typopeltis stimpsonii) Jul 18, 2024 Amami Oshima
Jul 18, 2024, Amami Oshima
Amami whipscorpion (Typopeltis stimpsonii) Sep 22, 2024 Courtship behavior, female embracing male from behind Amami Oshima
Sep 22, 2024, Amami Oshima, courtship behavior, female embracing male from behind
Amami whipscorpion (Typopeltis stimpsonii) Pedipalps curved down like a thumb, blunt at the tip indicating male
Pedipalps curved down like a thumb, blunt at the tip indicating male
Amami whipscorpion (Typopeltis stimpsonii) Pedipalps straight and pointed indicating female
Pedipalps straight and pointed indicating female