INSECT INVENTORY SEARCH ENGINE Subdatabase (Database for entomological literature)

Title	Review of East Asian species of Thrybius (Hymenoptera: Ichneumonidae: Cryptinae).

Book/Journal	Annales de la Société entomologique de France (N.S.): International Journal of Entomology

Author	Takuma Yoshida Rikio Matsumoto Kazuhiko Konishi

Edition		Volume	44	Number	(4)	Page	493-502

Publisher	Société entomologique de France.
Publisher	Société entomologique de France.

Year	2008	Month	10

ISBN		ISSN	0037-9271

URL

Remarks	Thrybius acuticornus n. sp. is described from Japan and Hong Kong. Thrybius togashii, which prior to this study was the only species of Thrybius Townes 1965 in East Asia, is redescribed and newly recorded from China and Korea. These species have remarkable differences in apical flagellar segment and fore tibia in females. Modifications or developments of these organs are considered to be related to host location by vibrational sounding (echo-location via solid medium) in several lineages of parasitoid wasps. The differences in these organs between Thrybius species also can influence their host usage. The functional significance of these structures is discussed briefly in relation to vibrational sounding, and compared with two European species, T. brevispina (Thomson 1896) and T. praedator (Rossi 1792).

Remarks

Thrybius acuticornus n. sp. is described from Japan and Hong Kong. Thrybius togashii, which prior to this study was the only species of Thrybius Townes 1965 in East Asia, is redescribed and newly recorded from China and Korea. These species have remarkable differences in apical flagellar segment and fore tibia in females. Modifications or developments of these organs are considered to be related to host location by vibrational sounding (echo-location via solid medium) in several lineages of parasitoid wasps. The differences in these organs between Thrybius species also can influence their host usage. The functional significance of these structures is discussed briefly in relation to vibrational sounding, and compared with two European species, T. brevispina (Thomson 1896) and T. praedator (Rossi 1792).

Taxon	Thrybius acuticornus Yoshida, Matsumoto & Konishi, 2008

Voucher specimen(s)	HYM-085