196,524 research outputs found
Heptacarpus fuscimaculatus Wicksten 1986
No full textHeptacarpus fuscimaculatus Wicksten, 1986 (Fig. 21B) Heptacarpus fuscimaculatus Wicksten, 1986: 47, figs. 1, 2; 1988a: 243; 1990b: 595. — Chace 1997: 44. Diagnosis. Rostrum short, slightly exceeding first segment of antennular peduncle, with 3–6 dorsal, 0–1 ventral spines. All segments of antennular peduncle with 1 spine each, stylocerite reaching end of first segment. Third maxilliped, pereopods 1–3 with epipods. Merus of first pereopod with spine. Pereopods 3–5 with spinose, bifid dactyls. Merus of pereopod 3 with 2 or 3 spines; pereopod 4, with 1–2 spines; pereopod 5, with 0–1 spine. Pleura of abdominal somites 1–3 rounded, 4, 5 with posterolateral points. Abdominal somite 5 with tooth on ventral midline. Telson with 3–5 pairs dorsolateral spines. Female total length 12 mm, male not reported. Color in life. Translucent with lines of brown chromatophores to pale green (Wicksten 1986). Habitat and depth. On floating docks, in kelp holdfasts, sand, gravel, algae, 0–295 m, usually at 50 m or less. Range. Santa Rosa I., California to off Thurloe Head, Baja California. Type locality Big Fisherman's Cove, Santa Catalina I., California.Published as part of Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, pp. 1-307 in Zootaxa 3371 on page 8
Lebbeus vicinus subsp. montereyensis Wicksten & Mendez 1982
No full textLebbeus vicinus montereyensis Wicksten & Méndez, 1982 (Fig. 22D) Lebbeus polaris: Wicksten 1978a: 6, fig. 6 [not Alpheus polaris Sabine, 1821]. Lebbeus vicinus montereyensis Wicksten & Méndez, 1982: 114, pl. 6. — Wicksten 1989b: 313; 1990b: 591. — Chace 1997: 52. — Wicksten & Hendrickx 2003: 67 Diagnosis. Rostrum of female long and slender, reaching end of scaphocerite, of male not reaching end of scaphocerite, with 3 or 4 dorsal teeth, 2 or 3 of them on carapace proper, 4 ventral teeth. First segment of antennular peduncle with sharp spine, stylocerite reaching end of first segment. Carapace with supraorbital tooth. Pereopod 1 with epipod. Pereopods 3–5 slender, dactyls with spines. Merus of pereopod 3, with 1 large distolateral, 4–6 smaller lateral spines; pereopod 4, with 4 meral spines; pereopod 5, with 3 lateral meral spines. Pleura of abdominal somites 1–4 rounded, 5 with sharp point. Telson with 2 pairs dorsolateral spines. Total length 50-65 mm. Color in life. Not reported. Habitat and depth. Benthic, 954–2086 m. Range. Monterey Bay, California to Gulf of California, Mexico. Type locality west of Punta Banda, Baja California, Mexico.Published as part of Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, pp. 1-307 in Zootaxa 3371 on page 9
Pagurus redondoensis Wicksten 1982
No full textPagurus redondoensis Wicksten, 1982 (Fig. 44I–O) Pagurus redondoensis Wicksten, 1982d: 605, figs. 1–3. — Harvey & McLaughlin 1991: 20. — Haig & Harvey 1991: 10. — Jensen 1995: 62, fig. 113. — Lemaitre & Castaño 2004: 79. Diagnosis. Rostrum short, rounded to triangular, about as long as lateral projections of carapace. Eyestalk long, slender, cornea dilated; ocular scale ending in 4–5 spinules. Major cheliped with setae on carpus, chela; carpus with teeth along mesial, distal margins; palm with 2 rows of dorsal spines, teeth along mesial margin; gap between fingers in adult males. Minor cheliped with prominent distal spines on carpus, low spines or teeth along mesial margin of merus, carpus, chela; 2 rows of large spines on palm. Pereopods 2, 3 setose, dactyls shorter than propodi, with ventral spines. Telson asymmetrical, lateral margins with cleft, terminal margin with deep u-shaped cleft and teeth. Uropods asymmetrical. Carapace length to 6 mm. Color in life. Greenish brown to reddish, but color often obscured by silt on setae. Chelipeds with prominent white band, narrow dark band at distal end of merus. Pereopods 2, 3 with white band at distal end of merus. Eyestalk with gray tinge, lightly banded with darker shades. Antennal flagellum dark brown with white bands. The color notes are from crabs from Catalina Harbor, Santa Catalina I. Habitat and depth. Usually in protected bays or harbors, often among tube mollusks (Serpulorbis squamigerus), lowest intertidal zone to 50 m. Range. Redondo Beach, to La Jolla, California. Type locality Redondo Beach. Remarks. This is a very common hermit crab in the appropriate habitat and depth in southern California.Published as part of Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, pp. 1-307 in Zootaxa 3371 on pages 191-19
Eualus lineatus Wicksten & Butler 1983
No full textEualus lineatus Wicksten & Butler, 1983 (Fig. 19A) Eualus lineatus Wicksten & Butler, 1983: 3, figs. 1–2. — Wicksten 1990b: 593. — Jensen & Johnson 1999: 133. — Chace 1997: 43. — Jensen 2004: 468. Spirontocaris herdmani Rathbun 1904: 100 [part, not Spirontocaris herdmani Walker, 1898]. Eualus herdmani Holthuis 1947: 11 (part). — Kozloff 1974: 166. — Butler 1980: 197, pl. 1C (part). Diagnosis. Rostrum slender, not reaching end of second segment of antennular peduncle, with 3–6 dorsal, 1–3 ventral teeth. First segment of antennular peduncle with 3 spines, other two segments with 2 spines each, stylocerite reaching or surpassing end of first segment; with curved, dorsal spine near base. Carapace with small suborbital tooth, strong antennal tooth, moderate pterygostomian tooth. Pereopods 1–3 with epipods. Pereopod 1 stout. Pereopods 3–5 slender, with spinose dactyls. Merus of pereopod 3, with 3 spines; pereopod 4, with 2–3 spines; pereopod 5, with 0–1 spine. Pleura of abdominal somites 13 rounded, 4–5 with points. Telson with 3 pairs dorsolateral spines. Male total length 20 mm, female 25 mm. Color in life. Carapace, abdomen marked with broad orange bands against translucent background (Jensen & Johnson 1999). Habitat and depth. Rocks, rocky reefs; often among sponges, 12–232 m. Range. Naha Bay, Alaska to Santa Cruz I., California. Type locality SW of Gull I., off Santa Cruz I., California. Remarks. This species has been confused with Heptacarpus herdmani (Walker, 1898), despite Walker's original description, which stated that the species lacked an exopod on the third maxilliped. Heptacarpus herdmani is currently known only from the type specimen from Puget Sound. The species also was confused with E. subtilus Carvacho & Owen, 1984; but can be distinguished easily in life by its colorful stripes and larger size than E. subtilis (Jensen & Johnson 1999). Eualus lineatus seems to be more common in colder water north of Point Conception or in areas of upwelling along the islands of southern California.Published as part of Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, pp. 1-307 in Zootaxa 3371 on page 7
Heteroptychus galapagos Baba & Wicksten 2020
No full text<i>Heteroptychus galapagos</i> Baba & Wicksten, 2020 <p> <i>Heteroptychus galapagos</i> was described from a single specimen taken at East Darwin Seamount, Galapagos Islands. Two females were collected from the Parrita Seep off Costa Rica (8°58.2’N, 84° 37.8’W), during this survey, 1025–1097 m, 6 June 2017, SIO-BIC-C12816 and SIO-BIO C12817, on an unidentified species of Isididae (Octocorallia).</p>Published as part of <i>Wicksten, Mary K. & Conway, Kevin W., 2023, The Chirostyloidea of the Northeastern Pacific: Host Associations, Range Extensions and a New Species (Decapoda: Anomura, pp. 167-176 in Zootaxa 5284 (1)</i> on page 173, DOI: 10.11646/zootaxa.5284.1.7, <a href="http://zenodo.org/record/7919091">http://zenodo.org/record/7919091</a>
Bathystylodactylus echinus Wicksten & Martin 2004
No full text<i>Bathystylodactylus echinus</i> Wicksten & Martin, 2004 <p>(Fig. 11F)</p> <p> <i>Bathystylodactylus echinus</i> Wicksten & Martin, 2004: 377, figs. 1–5.</p> <p> <b>Diagnosis.</b> Rostrum nearly straight, its length nearly twice length of carapace or more, with 23–27 dorsal, 18–25 ventral spines; series of 7–9 minute spinules on carapace just posterior to rostrum proper. Carapace, abdomen with small spinules along dorsal, lateral surfaces. Stylocerite slender, not reaching middle of first segment of antennular peduncle. Basicerite bearing strong lateral tooth. Scaphocerite covered by minute spinules, reaching second segment of antennular peduncle. Third maxilliped setose, with arthropod but without exopod. Pereopods all lacking exopods or epipods. Pereopods 1, 2 chelate, similar in size, shape. Fingers of chelae elongated, without teeth, with long setae, shorter spine-like setae along cutting edges. Pereopods 3–5 elongated with few scattered setae. Abdominal somite 3 weakly carinate dorsally, pleura of somites 4, 5 with sharp posteroventral tooth. Telson with 11–13 pairs dorsolateral spines located on weak ridges. Carapace length to 41.4 mm.</p> <p> <b>Color in life</b>. Not reported. Preserved specimens dirty chalk white with brown silt caught on setae, spinules.</p> <p> <b>Habitat and depth.</b> Abyssal plains, 3427–3689 m.</p> <p> <b>Range.</b> Patton Escarpment off California to basin off Magdalena Bay, Baja California, Mexico. Type locality basin off Magdalena Bay (24 ˚ 35' N, 113 ˚ 25' W).</p>Published as part of <i>Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, pp. 1-307 in Zootaxa 3371</i> on page 5
Processa peruviana Wicksten 1983
No full textProcessa peruviana Wicksten, 1983 Processa sp.- Méndez, 1981: 98, fig. 294.- Processa peruviana Wicksten, 1983: 29, figs. 4-6.- Hendrickx and Wicksten, 1987: 15.- Wicksten and Hendrickx, 1992: 9 (list); 2003: 68 (list).- Montagne and Cadien, 2001: 202.- Hendrickx and Wicksten, 2011: 31.- De Grave and Fransen, 2011: 439 (list). Material examined: 2 females 8.2- 8.7 mm, TALUD XIV, St. 1 (28°15’38”N - 111°58’33”W), 208-212 m, benthic sledge (EMU- 9506 A); 1 male 8.3 mm, TALUD XIV, St. 7 (28°15’27”N - 112°39’36”W), 203-204 m, Agassiz dredge (EMU- 9506 B). Remarks: As noted by Hendrickx and Wicksten (2011), P. peruviana is widely distributed throughout the eastern tropical Pacific. The specimens were collected in the following environmental conditions: muddy bottom; epibenthic water temperature and dissolved oxygen, 12.2-12-7 °C and 0.46 and 2.18 ml O 2 /l, respectively.Published as part of Ayón-Parente, Manuel, Hendrick, Michel E. & Ríos-Jara, Eduardo, 2012, Notes on two species of Processa (Decapoda: Processidae) from the Mexican Pacific, pp. 63-73 in Nauplius 20 (1) on page 71, DOI: 10.1590/S0104-64972012000100007, http://zenodo.org/record/356590
Gennadas tinayrei Bouvier 1906
No full textGennadas tinayrei Bouvier, 1906 (Fig. 5E, F, J) Gennadas tinayrei Bouvier, 1906. — Anderson & Lindner 1943: 293. — Kensley 1972: 12, figs. 4b, 5c. — Crosnier & Forest 1973: 281. — Crosnier 1978: 44, figs. 17b, 19d. — Krygier & Pearcy 1981: 78. — Hendrickx & Estrada-Navarrete 1989: 107; 1996: 36, fig. 9, 21, 23A. — Pérez Farfante & Kensley 1997: 66. — Guzmán & Wicksten 2000: 929. — Wicksten 2002: 130. Diagnosis. Similar to G. sordidus except thelycum with posteriorly directed tongue-like process on fifth thoracic sternite. Petasma with median lobe undivided, convex; external lobe divided with division marked by closely approximated blunt lobules. Total length 20 mm. Color in life. Not reported. Habitat and depth. Pelagic, 90–1400 m. Range. Off Oregon to Baja California, Chile, Atlantic and Indian oceans. Type locality Cape Verde Is.Published as part of Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, pp. 1-307 in Zootaxa 3371 on page 2
Uroptychus janiceae Baba & Wicksten, 2017, n. sp.
No full textUroptychus janiceae n. sp. (Figs. 9–11, 23 C) Diptychus nitidus. — A. Milne-Edwards, 1880: 62 (part [Blake Sta. 130]). Uroptychus nitidus var. B.— Chace, 1942: 15, fig. 5.— Pequegnat & Pequegnat 1970: 161.—de Melo-Filho 2006: 4.— Poupin & Corbari 2016: 38, fig. 9c. Type material. Holotype: MCZ CRU- 11318, 1 male (CL 6.8), Nicholas Channel south of Cay Sal Bank, north coast of Cuba, 23°20’N, 80°00’W, 400 fms [732 m], 3 May 1939, Atlantis Sta. 3452. Paratypes: MCZ CRU- 2734, 1 female (CL 5.0), off Fredericksted, St. Croix (U. S. Virgin Islands), 17°43’00”N, 64°55’10”W, 451 fms [825 m], 4 Jan. 1879, Blake Sta. 130. USNM 1107842, male (CL 5.7), Gulf of Mexico, Florida, SW of Panama City, 28°07’38”N, 85°51’36”W, 624–631 m, 16 May 1985. USNM 88691, 1 male (CL 6.0), Gulf of Mexico, off Mississippi Delta, 28°38’30”N, 87°02’W, host Acanella eburnea, 420 fms [768 m], 13 March 1885, Albatross Sta. 2394. USNM 152481, 1 male (CL 5.7), Florida, Monroe County, Dry Tortugas, 283 fms [518 m], 0 7 July 1931, W.L. Schmitt coll. USNM 1027034, 1 male, carapace broken, northeastern Gulf of Mexico, 28°15'59"N, 86°27’51”W, 800– 770 m, 10 June 2000, DGoMB Sta. S 42. USNM 1107846, 1 male (CL 5.9), Gulf of Mexico, off Mississippi Delta, 28°38’30”N, 87°02’W, host Acanella eburnea, 420 fms [768 m], 13 March 1885, Albatross Sta. 2394. USNM 1107843, 4 males (CL 4.9–5.4), 7 ov. females (CL 4.3–5.7), 4 females (CL 4.8–5.4), Gulf of Mexico, Florida, SW of Panama City, 28°07’38”N, 85°51’36”W, 624–631 m, 16 May 1985. TCWC 2-7995, 1 female (CL 5.6), southeastern Gulf of Mexico, 23°0'N, 86°48'W, 603 m, 9 July 1965, R/ V. Alaminos Sta. 65A9-15, id. L. Pequegnat (reported in Pequegnat & Pequegnat, 1970: 162). TCWC 2-6945, 1 male (CL 6.5), 1 female (CL 5.9), southern Caribbean Sea, 11°33.8’N, 73°45.1’W, with Chrysogorgia sp. and an unidentified species of Isididae, 732 m, 17 July 1970, Alaminos Sta. 70A10-31 (identified as U. nitidus variety B by L. Pequegnat). Description. Carapace: 1.0–[1.1] × longer than broad; greatest breadth [1.5]–1.6× distance between anterolateral spines. Dorsal surface smooth, with pair of [short granulate] or obsolescent ridges behind eyes; convex from anterior to posterior, with deep depression between gastric and cardiac regions. Lateral margins more or less denticulate, convexly slightly divergent posteriorly. Anterolateral spine relatively large, directed straight forward, overreaching small lateral orbital spine, separated from that spine by its basal breadth; branchial margin with row of short ridges (fine crenulations in dorsal view), followed by ridge along posterior third. Rostrum sharp narrow triangular, with interior angle of 13–[19]°, straight horizontal; dorsal surface nearly flattish; length 1.4– [1.5] × breadth, 0.6 × length of carapace. Lateral limit of orbit with tiny spine slightly anterior to position of anterolateral spine. Pterygostomian flap smooth on surface, anteriorly more or less roundish, ending in small spine. Sternum: Excavated sternum sharp triangular on anterior margin, with or [without] spine in center. Sternal plastron as long as broad, sternites 4–6 successively broader posteriorly, sternites 6 and 7 subequally broad. Sternite 3 well depressed, anterior margin shallowly concave, with pair of submedian spines separated by narrow notch, anterolateral end with distinct spine. Sternite 4 anterolateral margin convex, with 5 low blunt spines on anterior half; length [1.3]–1.6 × that of posterolateral margin. Anterolateral margin of sternite 5 about as long as posterolateral margin of sternite 4. Abdomen: Smooth and glabrous. Somite 1 with moderately rounded transverse ridge. Somite 2 tergite 2.4 × broader than long, pleuron with blunt anterolateral and posterolateral ends. Pleura of somites 3–4 laterally bluntly subtriangular. Telson 0.6 × as long as broad; posterior lobe 1.7–[2.1] × longer than anterior lobe, distinctly emarginate on posterior margin. Eyes: 1.2–1.5 [1.4] × longer than broad, reaching midlength of rostrum, mesial margin proximal to cornea concave. Cornea barely or [feebly] dilated, slightly longer than remaining ocular peduncle. Antennule and antenna: Ultimate article of antennule [3.2]–3.9 × longer than broad. Antennal peduncle distinctly overreaching cornea. Article 2 with distinct distolateral spine. Antennal scale 1.5–[2.0] × broader than article 5, ending in [distal third] or distal fourth of that article. Articles 4 and 5 unarmed; article 5 twice as long as article 4, breadth less than half height of ultimate article of antennule. Flagellum consisting of 16–[24] segments, slightly falling short of, reaching or [slightly overreaching] distal end of P1 merus. Mxp: Mxp1 with bases close to each other. Mxp3 basis with 4 denticles on mesial ridge. Ischium with [17]–21 denticles on crista dentata, flexor margin not rounded distally. Merus 2.5–[2.7] × longer than ischium, flexor margin sharply ridged. No spine on merus and carpus. P1: [5.0]–5.2 × longer than carapace, sparsely setose. Ischium with small dorsal spine, unarmed elsewhere. Merus [1.2]–1.3 × longer than carapace, feebly granulose, ventral surface with feeble groove along mesial margin. Carpus subcylindrical, feebly granulose, [1.1]–1.2 × longer than merus. Palm smooth, glabrous, [2.2]–2.7 × (males), 2.9–3.1 × (females) longer than broad, 0.8–[0.9] × length of carpus. Fingers setose, distally ending in somewhat incurved spine; in males, gaping in proximal half, opposable margins straight in distal half, movable finger with 2 processes in gaping portion, distal prominent, proximal small; in females, not gaping. Movable finger 0.8–[0.9] × length of palm. P2–4: Slender, somewhat compressed (surface not flattish), with relatively long setae moderate in density, unarmed on meri and carpi. Meri successively shorter posteriorly (P3 merus 0.8–[0.9] × length of P2 merus, P4 merus [0.8]–0.9 ×length of P3 merus); length-breadth ratio, [7.8]–8.5 on P2, 5.8–7.4 [6.4] on P3, 4.6–5.7 [5.1] on P4; P2 merus 1.0–[1.2] × length of carapace, [1.2]–1.3 × length of P2 propodus; P3 merus 1.0–1.1 × length of P3 propodus; P4 merus 0.8 × length of P4 propodus. Carpi [subequal on P2 and P3, shorter on P4] or successively slightly shorter posteriorly; carpus-propodus length ratio, [0.5]–0.6 on P2, 0.5 on P3, 0.4–[0.5] on P4. Propodi [subequal in length] on P2–4, slightly shorter on P2 than on P3 and P4 or successively longer posteriorly; flexor margin straight, with pair of terminal spines preceded by 5 or [6] spines on P2, 5–[7] on P3, 5 on P4, all basally articulated and long. Dactyli subequal, 0.4 × length of propodus, strongly curving at proximal third; flexor margins with [8 or 9] (rarely 10) subtriangular, somewhat obliquely directed spines, ultimate slightly longer than penultimate. Eggs: Number of eggs carried, up to 8; size, 0.88 mm × 1.04 mm – 1.29 mm × 1.45 mm). Color: Overall deep orange, but pale on posterior two thirds of carapace and on part of abdomen (Poupin & Corbari 2016: fig. 9c; Fig. 3 C, reproduced by permission of J. Poupin). Host: Acanella eburnea (Pourtalès, 1868), bamboo coral of family Isididae. Remarks. This species is referable to U. nitidus variety B of Chace (1942) that was described based on the material from Atlantis Stations 3452, 3475, 3449, 2985 from the north coast of Cuba. One of the lots, a male from Station 3452, has been examined. The other lots are now housed in the Museum of Comparative Zoology under the registration numbers: MCZ CRU-11319 (Sta. 2985), MCZ CRU-11317 (Sta. 3449) and MCZ CRU-11316 (Sta. 3475). Chace (1942) noted that there were no representatives in the collection of the Blake material. However, among the syntypes of U. nitidus we found a female from Blake Station 130 that can be referred to this species. This species resembles U. alphonsei n. sp. Distinguishing characters of these species are outlined under the remarks of the latter species (see above). Uroptychus janiceae is distinguished from U. nitidus by the P1 carpus, which is cylindrical instead of well flattened; the P1 movable finger, which is slightly shorter than the full length of instead of slightly more than half the length of the palm; and the anterior margin of sternite 3,which is more shallowly excavated. Distribution. East of St. Augustine (Florida), north coast of Cuba, northern and southeastern Gulf of Mexico, southern Caribbean, and Brazil off Paulo, 458– 808 m. Etymology. Dedicated to the late Janice D. Chace, the wife of Fenner Chace, for her hospitality during a stay of KB in the Smithsonian Institution in 1973–74.Published as part of Baba, Keiji & Wicksten, Mary K., 2017, Uroptychus nitidus (A. Milne-Edwards, 1880) and related species (Crustacea: Decapoda: Anomura: Chirostylidae) from the western Atlantic, pp. 251-290 in Zootaxa 4221 (3) on pages 265-270, DOI: 10.5281/zenodo.25021
Benthesicymus altus Bate 1881
No full textBenthesicymus altus Bate, 1881 (Fig. 3A–F) Benthesicymus altus Bate, 1881: 191. — Faxon 1895: 203. — Schmitt 1921: 22, pl. 11, fig. 2. — Anderson & Lindner 1943: 298. — Wicksten 1989b: 311. — Kikuchi & Nemoto 1991: 85, figs. 14,15. — Hendrickx 1996: 9, fig. 10 (extensive synonymy). — Pérez Farfante & Kensley 1997: 60. — Guzmán & Wicksten 2000: 927, fig. 2. — Hendrickx & Wicksten 2003: 57; 2004: 139. Diagnosis. Similar to B. tanneri but carapace without hepatic spine. Last segment of third maxilliped with 1 strong spine, 4–5 spinules. Abdominal somite 4 with slight dorsal carina, somite 5 with posterior dorsal carina, somite 6 with strong dorsal carina ending in upturned margin. Telson with 4 pairs lateral spines. Total length 120 mm. Color in life. Not reported. Habitat and depth. Continental slopes, usually benthic, 923–4120 m. Range. Western Pacific from Japan to Fiji, eastern Pacific from San Nicolas I. to Chile, South Atlantic, Indian Ocean off Maldive and Comoro Is. Type locality "between Australia and New Guinea" (Challenger sta. 184).Published as part of Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, pp. 1-307 in Zootaxa 3371 on page 1
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