Paratricommatus lockei MNRJ xxx - Ch esq mesal pam RETOUCH

Cryptogeobiidae, Paratricommatus lockei Kury, 2014, male (MNRJ), left chelicera, mesal view. Photo copyright A.B. Kury.

Bulla (from Latin bulla = ball) is the dorso-distal protuberance present on the basichelicerite of many species of Opiliones. It is typically attenuated in the Samoidae.

This term has been defined for the first time in Kury (1997)[1]


  1. Kury, A.B. (1997a) The genera Saramacia Roewer and Syncranaus Roewer, with notes on the status of the Manaosbiidae (Opiliones, Laniatores). Boletim do Museu Nacional, Rio de Janeiro, (N.S. Zoologia) 374, 1–22.

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