Annotated type-catalogue of Brachyura (Crustacea, Decapoda) of the Muséum national d’Histoire naturelle, Paris. Part II. Gecarcinidae and Grapsidae (Thoracotremata, Grapsoidea), with an Appendix of pre- 1900 collectors Author Ng, Ngan Kee Author Rodríguez Moreno, Paula A. Author Naruse, Tohru Author Guinot, Danièle Author Mollaret, Noémy text Zoosystema 2019 2019-03-26 41 7 91 130 journal article 10.5252/zoosystema2019v41a7 d58d0d44-7889-4739-9e2d-b1a0bc9780b9 1638-9387 3722522 urn:lsid:zoobank.org:pub:65E3A0BD-2AAD-4E12-9CB0-73C974BFCE65 Grapsus webbi H. Milne Edwards, 1853 ( Fig. 5F ) Grapsus Webbi H. Milne Edwards, 1853: 133 [167]. Grapsus strigosus – Brullé 1839: 15. Non Grapsus strigosus (Herbst, 1799) (see under Grapsus pelagicus ). CURRENT TAXONOMIC STATUS. — Junior subjective synonym of Grapsus adscensionis (Osbeck, 1765) (see Türkay 1982: 122 ; Manning & Chace 1990: 64 ). LECTOTYPE (by present designation). — MNHN-IU-2000-3457 (= MNHN-B3457 ), 28.4 × 31.0 mm, Canary Islands , coll. M. Berthelot. Grapsus webbi H. Milne Edwards, 1853 , syntype , revid. M. Türkay, IV-1977 . — Original label: “ Grapsus Webbi Edw. maculatus Catesby , Iles Canaries , M. Berthelot”. Additional label: “ Grapsus webbi H. Milne Edwards, 1853 , syntype , revid. M. Türkay, IV-1977 ”. PRESERVATION OF THE LECTOTYPE . — Dry. RP 1, RP5 missing. PARALECTOTYPES . — MNHN-IU-2000-10979 (= MNHN-B10979), 1 ♂ 54.6 × 62.2 mm , 1 ♀ 32.6 × 38.5 mm , Canary Islands , coll. M. Berthelot. Grapsus webbi H. Milne Edwards, 1853 . — Original label: “ Grapsus grapsus Linné ( Grapsus Webbi Edw. ), Iles Canaries , M. Berthelot . PRESERVATION OF THE PARALECTOTYPES . — Dry. REMARKS Henri Milne Edwards (1853) described this species based on the material collected by Webb & Berthelot who are well known for their exploration of the Canary Islands where they have gathered a considerable amount of material of all kinds (see Appendix). In their masterpiece “ Histoire naturelle des îles Canaries ”, the part Crustacea has been authored by G. A. Brullé, and this crab was identified as Grapsus strigosus by Brullé (1839: 15), before it was recognised as new by H. Milne Edwards, (1853: 133 [167]) and dedicated to Webb, then synonymised to Grapsus adscensionis (Osbeck, 1765) .