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FIG. 8 in Crabs of the subfamily Ethusinae Guinot, 1977 (Crustacea, Decapoda, Brachyura, Dorippidae) of the Indo-West Pacific region

FIG. 8. — Ethusa foresti Chen, 1985, cl 7.8 mm, cw 6.1 mm, Philippine Islands, SW of Luzon, MUSORSTOM 3, stn CP 97, 189-194 m (MNHN-B 18278), right G1 with distal end of G2 in situ, ventral view. Scale bar: 1 mm.

FIG. 2. — Ethusa abbreviata n in Crabs of the subfamily Ethusinae Guinot, 1977 (Crustacea, Decapoda, Brachyura, Dorippidae) of the Indo-West Pacific region

FIG. 2. — Ethusa abbreviata n. sp., holotype cl 13.8 mm, cw 14.5 mm, Vanuatu, N of Espiritu Santo, MUSORSTOM 8, stn CP 1124, 532-599 m (MNHN-B 27505); A, dorsal surface of carapace; B, ventral view of anterior portion of body; C, left G1, dorsal views; D, left G2, dorsal view. Scale bars: A, 5 mm; B-D, 2 mm.

FIG. 6. — Ethusa crassipodia n in Crabs of the subfamily Ethusinae Guinot, 1977 (Crustacea, Decapoda, Brachyura, Dorippidae) of the Indo-West Pacific region

FIG. 6. — Ethusa crassipodia n. sp., paratype cl 9.3 mm, cw 8.9 mm, Solomon Islands, E of Malaita, SALOMON 1, stn CP 1783, 399-700 m (MNHN-B 28701); A, dorsal surface of carapace and P2; B, ventral view of anterior portion of body; C, left G2, ventral view; D, left G1, dorsal (left) and ventral (right) views. Scale bars: A, 5 mm; B, 2 mm; C, D, 1 mm.

FIG. 5. — Ethusa barbata n in Crabs of the subfamily Ethusinae Guinot, 1977 (Crustacea, Decapoda, Brachyura, Dorippidae) of the Indo-West Pacific region

FIG. 5. — Ethusa barbata n. sp., juv. holotype cl 6.8 mm, cw 6.9 mm, Solomon Islands, N of Guadalcanal, SALOMON 1, stn CP 1804, 309-328 m (MNHN-B 28707); A, frontolateral portion of dorsal surface of carapace, most setae removed along right anterior margin; B, ventral view of anterior portion of carapace. Scale bars: A, 1 mm; B, 2 mm.

FIG. 1 in Crabs of the subfamily Ethusinae Guinot, 1977 (Crustacea, Decapoda, Brachyura, Dorippidae) of the Indo-West Pacific region

FIG. 1. — Terminology used to describe the carapace of members of the subfamily Ethusinae; A, dorsal surface of the carapace; B, ventral view of anterior portion of the body.

FIG. 4 in Crabs of the subfamily Ethusinae Guinot, 1977 (Crustacea, Decapoda, Brachyura, Dorippidae) of the Indo-West Pacific region

FIG. 4. — Ethusa andamanica Alcock, 1894, juv. "type" cl 6.8 mm, cw 7.1 mm, Andaman Sea off Andaman Islands, Investigator, stn 238, 110-137 m (BMNH 1939.9.20.10), dorsal surface of carapace. Scale bar: 5 mm.

FIG. 3 in Crabs of the subfamily Ethusinae Guinot, 1977 (Crustacea, Decapoda, Brachyura, Dorippidae) of the Indo-West Pacific region

FIG. 3. — Ethusa cf. abbreviata, juv. cl 7.6 mm, cw 7.7 mm, Solomon Islands, N of Guadalcanal, SALOMON 1, stn CP 1783, 399-700 m (MNHN-B 28702); A, dorsal surface of carapace; B, left G1, dorsal view. Scale bars: A, 5 mm; B, 1 mm.

FIG. 7 in Crabs of the subfamily Ethusinae Guinot, 1977 (Crustacea, Decapoda, Brachyura, Dorippidae) of the Indo-West Pacific region

FIG. 7. — Ethusa dilatidens Chen, 1997, cl 18. 0 mm, cw 18.0 mm, Philippine Islands, Visayan Sea, MUSORSTOM 3, stn CP 144, 379-383 m (MNHN-B 18930), right G1; A, dorsal view; B, C, ventral views. Scale bars: A, C, 0.5 mm; B, 1.0 mm.

FIG. 33 in A new subfamily classification of the highly diversified Dorippidae H. Milne Edwards, 1837 (Crustacea, Decapoda, Brachyura, Dorippoidea), using morphological, molecular and palaeotonlogical data, with special emphasis on its unique female reproductive system

FIG. 33. — Callosities in Dorippoidinae n. subfam. (Dorippoides) and Dorippinae n. stat. (Dorippe): A, callosity reduced to a thin calcified band: Dorippoides facchino (Herbst, 1785), ♂ 25.3 × 32.0 mm, Malaysia, Johore, Pontian, ZRC 1991.6672. B, no apparent callosity in male Dorippoides nudipes Manning & Holthuis, 1986, ♂ 16.2 × 19.4 mm, Iran, ZRC 2017.1227. C, callosity as a thick, elongated bulge: Dorippe quadridens (Fabricius, 1793), ♂ 39.0 × 41.4 mm, Thailand, Pattani Province, ZRC 2003.0126. D-F, callosity as a hemicircular structure: close-up views from different angles: D, E. Dorippe sinica Chen, 1980. D, ♀ 36.2 × 39.5 mm, China, Guangdong, Nanao Island, ZRC 1999.0470; E, ♂ 36.6 × 38.6 mm, Japan, Kochi, Shikoku, SMF 57855. F, D. frascone (Herbst, 1785), ♂ 29.7 × 31.0 mm, Philippines, Exp. Panglao 2004, ZRC 2008.0076. G, H, callosity as an arched double cup: D. tenuipes Chen, 1980, South China Sea, ZRC 1999.0009: G, ovigerous ♀ 17.3 × 19.6 mm; H, ♂ 13.2 × 14.2 mm. Abbreviations: b, branchiostegite; c, callosity; cx2-cx5, P2-P5 coxae; f, sulcated part of coxa; l, onepiece lateroventral part of coxa; m, membrane; p, pleon; pr, process of retention of female pleonal somite 2; pl6, exposed pleurite 6; P2-P5, pereiopods 2-5; r, rim of carapace posterior margin; s, strip along posterior rim; 1, 2, pleonal somites 1, 2; t, bottom of callosity with special texture; 7, 8, thoracic sternites 7, 8.

FIG. 28. — Philippidorippinae n. subfam. Philippidorippe philippinensis Chen, 1986 in A new subfamily classification of the highly diversified Dorippidae H. Milne Edwards, 1837 (Crustacea, Decapoda, Brachyura, Dorippoidea), using morphological, molecular and palaeotonlogical data, with special emphasis on its unique female reproductive system

FIG. 28. — Philippidorippinae n. subfam. Philippidorippe philippinensis Chen, 1986: A-D, ♂ 23.0 × 29.3 mm, Philippines, Bohol Province, ZRC 2016.0240: A, ventral view; B, anterior region; C, thoracic sternum with pleon; D, thoracic sternum, G1. E, ♂ 25.0 × 30.0 mm, Philippines, MUSORSTOM 3, MNHN-IU-2018-5201 (= MNHN-B18913): thoracic sternum, G1 and G2.

FIG. 23. — Medorippinae n in A new subfamily classification of the highly diversified Dorippidae H. Milne Edwards, 1837 (Crustacea, Decapoda, Brachyura, Dorippoidea), using morphological, molecular and palaeotonlogical data, with special emphasis on its unique female reproductive system

FIG. 23. — Medorippinae n. subfam.: A, B,?Medorippe crosnieri Chen, 1988. Mozambique Channel, MAINBAZA Expedition: A, ♂ 21.1 × 25.9 mm, CP 3132, MNHN-IU-2009-1998, with dimorphic chelipeds; B, young ♂ 12.0 × 15.0 mm, CP 3130, MNHN-IU-2009-1999, with symmetrical chelipeds. Photos courtesy of T.-Y. Chan. C, Medorippe lanata (Linnaeus, 1767), ♂ 23.2 × 28.9 mm, no data, ZRC 2009.0412 (ex MNHN): P2 merus with spinulated dorsal margin; D,?Medorippe crosnieri Chen, 1988, ♂ 21.1 × 25.9 mm, same data as in A (MNHN-IU-2009-1998): P2 merus with smooth dorsal margin. Photographs made by S. Soubzmaigne.

FIG. 37 in A new subfamily classification of the highly diversified Dorippidae H. Milne Edwards, 1837 (Crustacea, Decapoda, Brachyura, Dorippoidea), using morphological, molecular and palaeotonlogical data, with special emphasis on its unique female reproductive system

FIG. 37. — Schematic representation of character mapping of sperm storage organs in the different dorippid subfamilies recognised here (except Phyllodorippinae n. subfam. not studied) and in a typical eubrachyuran: ovary with oocytes; oviduct; cuticular bursae (thin black line), of equal or unequal size; seminal receptacle either bilateral twin- or bilateral single, and either completely cuticular (thin black line) or partially glandular (thick black line). The twin system occurs in Dorippinae n. stat., Dorippoidinae n. subfam., Paradorippinae n. subfam. and Philippidorippinae n. subfam.; the single system occurs in Heikeopsinae n. subfam., Medorippinae n. subfam. and in the typical Eubrachyura (most, see e.g. Ethusidae). Modified from Vehof 2020: figs 20-22).

FIG. 20. — Heikeopsinae n in A new subfamily classification of the highly diversified Dorippidae H. Milne Edwards, 1837 (Crustacea, Decapoda, Brachyura, Dorippoidea), using morphological, molecular and palaeotonlogical data, with special emphasis on its unique female reproductive system

FIG. 20. — Heikeopsinae n. subfam. Neodorippe callida (Fabricius, 1798): A, young ♂ 10.1 × 10.3 mm, Singapore, Changi Point Beach, ZRC 2018.0445: habitus of young male; B, C, Andaman Sea, Phuket, Thailand, MNHN-IU-2016-10754 (ex ZRC 1998.1116): B, ♀ 14.0 × 15.0 mm, habitus; C, ♂ 13.5 × 14 mm: ventral view. D, E, ♂ 10.1 × 10.3 mm, same data as A, ZRC 2018.0445: D, thoracic sternum with pleon; E, without pleon, G1, press-buttons. F, ♀ 11.2 × 11.5 mm, same data as A, D, E, ZRC 2018.0445: anterior view. G, ♀ 11.2 × 11.5 mm, sama data as B, C, MNHN-IU-2016-10754: vulvae, press-buttons. H, ♀ 11.2 × 11.5 mm, same data as A, D, E, F, ZRC 2018.0445: vulvae.

FIG. 30. — Phyllodorippinae n in A new subfamily classification of the highly diversified Dorippidae H. Milne Edwards, 1837 (Crustacea, Decapoda, Brachyura, Dorippoidea), using morphological, molecular and palaeotonlogical data, with special emphasis on its unique female reproductive system

FIG. 30. — Phyllodorippinae n. subfam. Phyllodorippe armata (Miers, 1881), ♂ 12.3 × 16.2 mm, Guinean Trawling Survey, ZRC 2009.0413 (ex MNHN-B24202): A, both chelae; B, thoracic sternum and pleon; C, thoracic sternum without pleon; D, G1 and press-buttons.

FIG. 19. — Heikeopsinae n. subfam. A-D in A new subfamily classification of the highly diversified Dorippidae H. Milne Edwards, 1837 (Crustacea, Decapoda, Brachyura, Dorippoidea), using morphological, molecular and palaeotonlogical data, with special emphasis on its unique female reproductive system

FIG. 19. — Heikeopsinae n. subfam. A-D, Heikeopsis japonica (von Siebold, 1824): A, ♂ 22.5 × 24.3 mm, Japan, Tokushima, SMF 57856: habitus; B, ♀ 23.5 × 26.7 mm, Japan, Chaffanjon, MNHN-IU-2000-4091 (= MNHN-B4091): habitus; C, ♂ 25.0 × 27.3 mm, same data as B: ventral view; D, ♂ 24.2 × 25.4 mm, same data as B and C: thoracic sternum and pleon. E, F,?Heikeopsis aff. japonica, China, seas off Qingdao, ZRC 2002.0491: habitus: E, ♂ 21.9 × 24 mm; F, ♀ 23.4 × 26.4 mm.

FIG. 25. — Paradorippinae n in A new subfamily classification of the highly diversified Dorippidae H. Milne Edwards, 1837 (Crustacea, Decapoda, Brachyura, Dorippoidea), using morphological, molecular and palaeotonlogical data, with special emphasis on its unique female reproductive system

FIG. 25. — Paradorippinae n. subfam. Paradorippe granulata (De Haan, 1841): A, C, E, ♂ 24.0 × 26.0 mm, China, Tuandao, off Quingdao, MNHN-IU-2016-10753. B, D, ♂ 23.6 × 27.3 mm, NE Taiwan, I-Lan county, ZRC 2001.0014; A, chelae; B, thoracic sternum and pleon; C, D, thoracic sternum without pleon, with G1, G2 and press-buttons; E, G1 and G2 in situ.

FIG. 27. — Philippidorippinae n. subfam. Philippidorippe philippinensis Chen, 1986 in A new subfamily classification of the highly diversified Dorippidae H. Milne Edwards, 1837 (Crustacea, Decapoda, Brachyura, Dorippoidea), using morphological, molecular and palaeotonlogical data, with special emphasis on its unique female reproductive system

FIG. 27. — Philippidorippinae n. subfam. Philippidorippe philippinensis Chen, 1986, Philippines, Bohol Province, ZRC 2016.0240: A, ♂ 23.0 × 29.3 mm: habitus; B-D, ovigerous ♀ 25.2 × 33.2 mm; B, habitus; C, thoracic sternum with pleon, press-button; D, vulvae.

FIG. 18. — Dorippoidinae n in A new subfamily classification of the highly diversified Dorippidae H. Milne Edwards, 1837 (Crustacea, Decapoda, Brachyura, Dorippoidea), using morphological, molecular and palaeotonlogical data, with special emphasis on its unique female reproductive system

FIG. 18. — Dorippoidinae n. subfam.: A-C, Dorippoides facchino (Herbst, 1785), ovigerous ♀ 20.3 × 26.2 mm, South China Sea, Hee Huat, ZRC 1984.5347: A, thoracic sternum with pleon; B, without pleon, vulvae. C, ovigerous ♀ 21 × 25 mm, South China Sea, trawl, 37 m, Chen leg. 1987, MNHN-IU-2018-5195 (= MNHN-B18802). D-F, Dorippoides nudipes Manning & Holthuis 1986: D, ♂ 16.2 × 19.4 mm, Iran, ZRC 2017.1227; thoracic sternum with pleon; E, F, ♀ 21.6 × 29.5 mm, South Africa, vicinity of Tugela River mouth, ZRC 2009.0885: E, thoracic sternum with pleon; F, thoracic sternum without pleon; vulvae. See the spurlike process on P3 ischium of females on A, B.

FIG. 32 in A new subfamily classification of the highly diversified Dorippidae H. Milne Edwards, 1837 (Crustacea, Decapoda, Brachyura, Dorippoidea), using morphological, molecular and palaeotonlogical data, with special emphasis on its unique female reproductive system

FIG. 32. — Diversity of vulvae in the seven dorippid subfamilies (schematic drawings): A, Dorippinae n. stat. (Dorippe quadridens); B, Dorippoidinae n. subfam. (Dorippoides facchino); C, Medorippinae n. subfam. (Medorippe lanata); D-F, Heikeopsinae n. subfam.; D, Heikeopsis?japonica; E, Neodorippe callida; F, Nobilum histrio; G, Paradorippinae n. subfam. (Paradorippe cathayana); H, Philippidorippinae n. subfam. (Philippidorippe philippinensis); I, Phyllodorippinae n. subfam. (Phyllodorippe armata, ♀ 13.0 × 19.0 mm, Guinean Trawling Survey, MNHN-IU-2021-8731 [= MNHN-B24199]). Setae represented only on B. A-H, modified from Holthuis & Manning (1990).

FIG. 16. — Dorippoidinae n in A new subfamily classification of the highly diversified Dorippidae H. Milne Edwards, 1837 (Crustacea, Decapoda, Brachyura, Dorippoidea), using morphological, molecular and palaeotonlogical data, with special emphasis on its unique female reproductive system

FIG. 16. — Dorippoidinae n. subfam.: A, B, Dorippoides facchino (Herbst, 1785): A, ♂ 25.3 × 32 mm, Malaysia, Johore, Pontian, ZRC 1991.66-72; B, ovigerous ♀ 20.3 × 26.2 mm, South China Sea, Hee Huat, ZRC 1984.5347; C, D, Dorippoides nudipes Manning & Holthuis, 1986: C, ♂ 16.2 × 19.4 mm, Iran, ZRC 2017.1227; D, ♀ 21.6 × 29.5 mm, South Africa, vicinity of Tugela River mouth, ZRC 2009.0885.