1,355,740 research outputs found
Review of "Civic Performance: Pagentry and Entertainments in Early Modern England" by J. P. Conlan.
No full textJ. Caitlin Finlayson & Amrita Sen, eds. Civic Performance: Pagentry and Entertainments in Early Modern England. London & New York: Routledge, 2020. xiv + 254 pp. 8 illustrations. Review by J. P. Conlan, University of Puerto Rico, Rio Piedras Campus
Peramphithoe Conlan & Bousfield 1982
No full textGenus Peramphithoe Conlan & Bousfield, 1982 Type species. Ampithoe femorata Krøyer, 1845, original designation. Diagnosis. Lateral cephalic lobes short, blunt. Antenna 1 usually longer than antenna 2; accessory flagellum absent. Antenna 2 stout, flagellum short. Mandibular palp present. Gnathopod 1 coxa not produced anterodistally, palm transverse. Gnathopod 2 enlarged, subchelate. Pereopods 3–4 similar, basis stout, strongly expanded. Pereopod 5 shorter than pereopods 6–7, with broader basis. Uropod 1 with distoventral peduncular spur. Uropod 3 rami short, outer ramus with 2 hooked spines apically. Telson entire, subtriangular. Species composition. Peramphithoe annenkovae (Gurjanova, 1938); P. aorangi (J.L. Barnard, 1972); P. baegryeongensis Kim & Kim, 1988; P. chujaensis sp. nov.; P. e o a (Brüggen, 1907); P. falsa (K.H. Barnard, 1932); P. f e m o - rata (Krøyer, 1845); P. humeralis (Stimpson, 1864); P. lessoniophila Conlan & Bousfield, 1982; P. lindbergi (Gurjanova, 1938); P. m e a (Gurjanova, 1938); P. namhaensis Kim & Kim, 1988; P. orientalis (Dana, 1853); P. parmerong Poore & Lowry, 1997; P. p l e a (J.L. Barnard, 1965); P. spuria (Krapp-Schickel, 1978); P. stypotrupetes Conlan & Chess, 1992; and P. t e a (J.L. Barnard, 1965).Published as part of Kim, Young-Hyo, Hong, Soon-Sang, Conlan, Kathleen E. & Lee, Kyung-Sook, 2012, The genus Peramphithoe Conlan & Bousfield, 1982 from Korean waters (Crustacea: Amphipoda: Ampithoidae), pp. 1-19 in Zootaxa 3400 on page 4, DOI: 10.5281/zenodo.21118
Jassa hartmannae Conlan 1990
No full textJassahartmannae Conlan, 1990 (Table 13, Fig. 104) Diagnosis. Both sexes: Mandibular palp: article 2, dorsal margin without a fringe of setae. Maxilla 1: without a cluster of setae at the base of the palp article 1. Gnathopod 1: basis, anterolateral margin with a row of short setae along its length which may be slender or spine-like; carpus without a single or small cluster of short setae at the anterodistal junction of the propodus. Gnathopod 2: basis with a row of short setae along the anterolateral margin (setal lengths ±25% of the basis width); carpus and propodus, setae on the anterior margin short and simple (setal length <basis width). Pereopods 5–7: propodus not expanded anteriorly. Uropod 1: ventral peduncular spinous process underlying about 50% of the longest ramus. Uropod 3: inner ramus without spines mid-dorsally (with only the single apical spine). Telson: tip without apical setae (only the usual short setae at each dorsolateral cusp). Thumbed male: Antenna 2: large individuals without plumose setae on the flagellum and peduncular article 5. Gnathopod 2: propodus, palmar defining spines produced on a ledge, present in both small and large thumbed males. Adult female: Antenna 2: without plumose setae on the flagellum and peduncular article 5. Gnathopod 2: propodus, palm shallowly concave. Remarks. There is an error in the key to species in Conlan (1990) (though the description is correct). The gnathopod 1 carpus lacks a seta or setae at the anterodistal junction with the propodus. There are only 16 specimens known so far from two collections listed in Conlan (1990), both from New Zealand. Four of these are thumbed males (three major form and one minor form). All males possessed palmar defining spines, suggesting that they may not lose them even if major form. Jassa hartmannae most closely resembles J. justi but they differ in the stonger spination of the propodus of pereopods 5–7, stouter antenna 2 and spinier basis of gnathopod 2 in J. justi than J. hartmannae (Figs 92, 104). Jassa justi also achieves twice the body length of J. hartmannae.Published as part of Conlan, Kathleen E., Desiderato, Andrea & Beermann, Jan, 2021, Jassa (Crustacea: Amphipoda): a new morphological and molecular assessment of the genus, pp. 1-191 in Zootaxa 4939 (1) on pages 158-159, DOI: 10.11646/zootaxa.4939.1.1, http://zenodo.org/record/458062
Jassa gruneri Conlan 1990
No full textJassagruneri Conlan, 1990 (Table 13, Figs 102–103) Diagnosis. Both sexes: Mandibular palp: article 2, dorsal margin without a fringe of setae. Maxilla 1: without a cluster of setae at the base of the palp article 1. Gnathopod 1: basis, anterolateral margin with only a few short setae distally; carpus without a single or small cluster of short setae at the anterodistal junction of the propodus. Gnathopod 2: basis with a few or a full row of setae along the anterolateral margin (setal lengths 50% of the basis width); carpus and propodus, setae on the anterior margin short and simple (setal length <basis width). Pereopods 5–7: propodus not expanded anteriorly. Uropod 1: ventral peduncular spinous process underlying about 40% of the longest ramus. Uropod 3: inner ramus without spines mid-dorsally (with only the single apical spine). Telson: tip without apical setae (only the usual short setae at each dorsolateral cusp). Thumbed male: unknown. Adult female: Antenna 2: without plumose setae on the flagellum and peduncular article 5. Gnathopod 2: propodus, palmsinuous. Remarks. This is a small-bodied species with the juvenile male holotype 2.1 mm and the adult female allotype 3.2 mm (Conlan 1990). It is part of the Southern Hemisphere sinuous-palmed group, keying closest to J. thurstoni. Jassa gruneri differs in the lack of a seta on the carpus of gnathopod 1 at the anterodistal junction of the propodus (present in J. thurstoni) and in the presence of a row of setae on the basis of gnathopod 2 (absent in J. thurstoni). This row is more pronounced in the female allotype than the juvenile male holotype (Fig. 102). Currently it is only known from Tasmania and New Zealand. The New Zealand specimen (Fig. 12) is a juvenile male and was found in a collection in Lyttelton harbour described by Chilton (1884). In this same collection is a specimen used by Chilton to describe his new species Podocerus latipes Chilton, 1884, which was synonymized by Stebbing (1906) under Jassa frequens (Chilton, 1883) and later transfered to Ventojassa (Conlan 2021).Published as part of Conlan, Kathleen E., Desiderato, Andrea & Beermann, Jan, 2021, Jassa (Crustacea: Amphipoda): a new morphological and molecular assessment of the genus, pp. 1-191 in Zootaxa 4939 (1) on pages 156-158, DOI: 10.11646/zootaxa.4939.1.1, http://zenodo.org/record/458062
John Conlan Interview, March 26, 2011
No full textJohn Conlan of Stevensville, Montana, describes how he came to Montana as a function of his teaching career and the misconceptions of the role of the teacher. He speaks of family memories and the importance of the Irish interconnectedness with significant world events.https://scholarworks.umt.edu/gathering/1039/thumbnail.jp
Review of "A Monster with a Thousand Hands: The Discursive Spectator in Early Modern England" by Amy J. Rodgers.
No full textAmy J. Rodgers. A Monster with a Thousand Hands: The Discursive Spectator in Early Modern England. Philadelphia: University of Pennsylvania Press, 2018. vii + 231 pp. $69.95. Review by J. P. Conlan, University of Puerto Rico, Rio Piedras Campus
Jassa slatteryi Conlan 1990
No full textJassaslatteryi Conlan, 1990 (Table 10, Figs 22–27) J. cadetta Krapp etal., 2008, pp. 337–345, figs. 4–7 J. trinacriae Krapp etal., 2010, pp. 85–100, figs. 5–7 Diagnosis. Both sexes: Mandibular palp: article 2, dorsal margin without a fringe of setae. Maxilla 1: without a seta or setal cluster at the base of the palp article 1. Gnathopod 1: basis, anterolateral margin without a row of short setae along its length; carpus with a single or group of long setae at the anterodistal junction of the propodus, (seta(e) Ẑ50% the length of the anterior margin length and slightly medial). Gnathopod 2: basis with a row of setae along the anterolateral margin (length of most setae <40% of the basis width); carpus and propodus, setae on the anterior margin short and simple (setal length <basis width). Pereopods 5–7: propodus not expanded anteriorly. Uropod 1: ventral peduncular spinous process underlying about ¼ of the longest ramus. Uropod 3: inner ramus without spines mid-dorsally (with only the single apical spine). Telson: tip without apical setae (only the usual short setae at each dorsolateral cusp). Thumbed male: Antenna 2: large individuals with plumose setae on the flagellum and peduncular article 5. Gnathopod 2: propodus, palmar defining spines not produced on a ledge, present in small thumbed males but absent in large thumbed males. In minor males, the thumb is distally acute, short relative to body length and located on the distal half of the propodus. The dactyl is not centrally toothed. In major males, the thumb is distally acute, longer relative to body length and on the proximal half of the propodus. The dactyl is expanded close to the junction with the propodus but is not centrally toothed. Adult female: Antenna 2: large animals with plumose setae on the flagellum and peduncular article 5. Gnathopod 2: propodus, palm shallowly concave, palmar defining angle acute. Remarks. Smaller males and females lack the plumose setae on the distal parts of the antenna 2. The long filter setae on antenna 2 are absent or much shorter in the thumbed males than the females or juveniles. Large subadult males have some plumose setae on the flagellum but retain the long setae typical of juveniles and females on the peduncle (Figs 22–23). The long seta on the anterodistal margin of the gnathopod 1 carpus is usually visible, extending upright or away from the propodus. However, it may also lay flat against the medial face of the propodus, so it is necessary to check for its presence using a fine needle inserted into a rod for grasping or with needle-nosed forceps. Presence of this long seta (or setal cluster), along with lack of apical setae on the telson are key distinguishing characters for J. slatteryi of any size or sex, except from J. carltoni, which also has these character states. Differences from J. carltoni are more in the shape of the gnathopod 1 palm (straighter in J. slatteryi and concave in J. carltoni), the density of setae on the anterior margin of the basis of gnathopod 2 (more setae in J. slatteryi than J. carltoni) and in the shape and spination of the gnathopod 2 propodus: slenderer in the female of J. slatteryi with the defining spines tightly clustered and the major form male’s thumb always acute at the tip and not curved posteriorly, while in J. carltoni the female’s defining spines are more dispersed and the major form male’s thumb is more rounded at the tip and curved posteriorly. While J. slatteryi has been found on many coasts, J. carltoni is only known from the Pacific coast of North America. Jassa slatteryi also occurs on the Pacific coast of North America, however, though it has not been found in the same collections as J. carltoni. Asubset of the specimens described by Hong (1983) as J. falcata were lent for analysis for this study. They had been collected in Deukryang Bay, The Republic of Korea from a settling plate. Major forms ranged from 5.5 to 7.2 mm in body length while minor forms were 3.0– 6.2 mm (Fig. 24). Thumb length was less relative to body size in minor forms than major forms. Aplot of propodus length to body length for the same males, with addition of females from the Deukryang Bay population showed a longer propodus length relative to body length for the adult males than for the females, juvenile and subadult males (Fig. 25). For the adult males that overlapped in body length (5.58–6.41 mm), propodus length did not significantly differ between major and minor form (ANOVA, F = 0.211, p = 0.654, df = 14; major form propodus length 1.863 ± 0.122 mm, n = 7; minor form propodus length 1.830 ± 1.51 mm, n = 8). Lim and Park (2006) redescribed and illustrated a minor form of J. slatteryi from a collection taken from the screw of a ship in Samcheon-po bay on the south coast of The Republic of Korea. Rumbold et al. (2015a) examined J. slatteryi from Argentina both morphologically and with the CO1 gene, comparing it with J. marmorata and J. staudei. They also provided a photograph of live pigmentation of a subadult male and photographs of various body parts of a minor form thumbed male. Their Fig. 3I is the tip of the maxilliped palp, not the mandible as stated. Pilgrim & Darling (2010) found J. slatteryi, J. marmorata and J. staudei to be unique based on the CO1 gene. Aloan of J. slatteryi that was obtained after Conlan (1990) was of three samples at 11–24 m depth offshore of Rio de Janeiro and Ubatuba, Brazil in 1964–1966. This is the earliest known collection of J. slatteryi on the Atlantic coast of South America (Table 3). Conlan (1990) cited in error that J. slatteryi occurred in the Galapagos Islands, Ecuador, based on identification of 7 major form males, 3 adult females and 1 juvenile borrowed from the Swedish Museum of Natural History. The collection location was Cumberland Bay, Masatiera, but this is located in Robinson Crusoe Island, Chile (formerly Más a Tierra). The reference by Rumbold et al. (2015a) to J. slatteryi occurring in the Galapagos Islands is therefore also in error. Some other location errors in Conlan (1990) were also found when collections were re-examined for this paper as some specimens of “ J. slatteryi ” on the Pacific North American coast were unrecognized J. morinoi or J. carltoni. Corrected distributions indicate that both J. slatteryi and J. morinoi are indeed trans-hemispheric (Figs 3–6) yet also occur at remote locations along the Pacific North American coast, particularly in British Columbia. Jassa carltoni is only known from the Pacific coast of North America and is now known from British Columbia (Fig. 10; update of Conlan 1990). Intersexes, having characteristics of both females (setose brood plates) and males (penial papillae and thumbed second gnathopods) were found in Santa Ynez, Eureka Harbor, and Morro Bay, California, Tanabe Bay, Japan and Adelaide, Australia (Fig. 26). The intersexes had small thumbs which could differ in size between right and left gnathopod. Two species described after the revision by Conlan (1990) are submerged under J. slatteryi: J. cadetta Krapp et al., 2008 and J. trinacriae Krapp et al., 2010. Jassa cadetta was described by Krapp et al. (2008) based on specimens collected in algae at shallow depth in the Venice Lagoon, Malamocco, Italy (~ 45°22′18ʺN, 12°20′15ʺE). These had a different karyotype and morphology than J. marmorata, which was also found there, and therefore was designated a new species. The possibility that J.cadetta could be J. slatteryi was not considered by the authors, but examination of the types lent by the Museo Civico di Storia Naturale di Verona, Italy showed that their morphology was unmistakeably that of J. slatteryi (Supplementary data file S2). Both J. marmorata and J. slatteryi are common inhabitants of fouling communities in populated areas such as Venice Lagoon (Table 4). Jassa trinacriae was described based onspecimens collected at Grotta Conza, Sicily (~ 38°11′14″N, 13°16′57″E), at the northern end of the Conca d’Oro, a cave of about 90 m length, 175 m above sea level, and 1 km distant from the sea. Presumably the specimens were in saline water as Jassa is not known from fresh water (Table 4). Additional specimens collected in 1952 from Sampieri, Sicily were also ascribed to this species by Krapp et al. (2010). Aloan of these individuals fromthe same museum as for J. cadetta allowed confirmation that all specimens were clearly J. slatteryi (Supplementary data file S3). Therefore, J. trinacriae is submerged. These specimens are the earliest collection known for the Mediterranean, since the record for Rovinj, Croatia noted in Conlan (1990) had no collection date (Table 3). Navarro-Barranco etal. (2015), Fernandez-Leborans etal. (2016), Fernandez-Gonzalez & Sanchez-Jerez (2017) and Bonifazi et al. (2018) document other Mediterranean locations where J. slatteryi has been confirmed. Krapp et al. (2010) also described a Jassa sp. from a thermal spring in Fordongianus, Sardinia where the water was 45 °C (54–58 °C at the origin of the spring). Angelone et al. (2005) reported an electrical conductivity of 1,547 µS cm-1, pH 8.40 and Eh 259 mV in this spring, which is in range of that found in seawater. Fordongianus is about 20 km east of the Sardinian west coast. This specimen was also borrowed from the Museo civico di Storia Naturale di Verona, Italy and examined (Supplementary data file S4). Its immature appearance and small size (2.2 mm length) suggest that it is a hatchling. If indeed a species of Jassa, this would be the warmest water recorded (Table 4). The specimenwasslidemountedandthereforecouldnotbemanipulatedtoviewallbodyparts. Conclusivedetermination would require specimens at a more advanced age.Published as part of Conlan, Kathleen E., Desiderato, Andrea & Beermann, Jan, 2021, Jassa (Crustacea: Amphipoda): a new morphological and molecular assessment of the genus, pp. 1-191 in Zootaxa 4939 (1) on pages 54-60, DOI: 10.11646/zootaxa.4939.1.1, http://zenodo.org/record/458062
Jassa carltoni Conlan 1990
No full textJassacarltoni Conlan, 1990 (Table 12, Figs 78–82) Diagnosis. Both sexes: Mandibular palp: article 2, dorsal margin without a fringe of setae. Maxilla 1: without a seta or setal cluster at the base of the palp article 1. Gnathopod 1: basis, anterolateral margin with a few short setae along its length; carpus with a (usually) single or a small cluster of long setae at the anterodistal junction of the propodus (setae 65-70% of anterior margin length andslightly medial). Gnathopod 2: basis with a few moderately long setae on the anterodistal margin (most setal lengths <40% of the basis width); carpus and propodus, setae on the anterior margin short and simple (setal length <basis width). Pereopods 5–7: propodus not expanded anteriorly. Uropod 1: ventral peduncular spinous process underlying about 1/3 of the longest ramus. Uropod 3: inner ramus without spines mid-dorsally (with only the single apical spine). Telson: tip without apical setae (only the usual short setae at each dorsolateral cusp). Thumbed male: Antenna 2: without plumose setae on peduncular article 5 and flagellum. Gnathopod 2: propodus large and stout, palmar defining spines not produced on a ledge, spines lost in large thumbed males. Major form: thumb about 30% the length of the propodus and curved posterodistally, dactyl sinuous, expanded proximally. Minor form: thumb about 15% the length of the propodus, dactyl expanded more distally than in the major form, into the palmar incision between the thumb and the proximal tooth. Adult female: Antenna 2: without plumose setae on peduncular article 5 and flagellum. Gnathopod 2: propodus, palm concave, palmar defining angle acute, palmar defining spines relatively widely spaced. Remarks. Conlan (1990) first recognized Jassa carltoni as a new species in Californian collections described by Barnard (1969) as “ Jassa falcata ”. The largest specimens available were chosen as the type lot (Fig. 78). However, the holotype, a major form male, appears to have a damaged thumb, as the tip is short and apically indented compared to the major form paratype (Fig. 79). The minor form paratype (Fig. 79) has a similarly shaped but shorter thumb with the dactyl expanded into the palmar incision. Additional specimens from British Columbia are figured in order to show the morphology of an undamaged major form male as well as a subadult male that had an obvious thumb inside the cuticle. Plots of thumb and propodus length on gnathopod 2 for specimens from a single population show that the major form thumbed male has a substantially longer thumb and gnathopod 2 propodus length than the minor form thumbed male (Figs 79, 80). Propodus length of adult females is also much less than for major form males but more similar to minor form and subadult males. However there were insufficient specimens of similar body length for statistical comparison. Jassa carltoni most resembles J. slatteryi, both of which occur on the Pacific coast of North America. Although both have a 4-articled flagellum on antenna 2, the flagellum is slenderer in Jassa carltoni than in J. slatteryi and unlike J. slatteryi, it does not become plumose in large thumbed males. The palm of gnathopod 1 is convex while in J. slatteryi it is straight or shallowly concave. Both males and females of J. carltoni have a sparser setation on the anterior margin of the basis and a wider propodus on gnathopod 2 (maximal width ~65% of maximal length) than for J. slatteryi (maximal width ~50% of maximal length). The thumb shape also differs: tip rounded and curved posteriorly in major form males of J. carltoni and tip acute and not curved posteriorly in major form males of J. slatteryi. In minor form males of J. carltoni, the thumb is shorter and more acute than in the major forms, and more closely resembles J. slatteryi. The shape differences in the gnathopod 1 palm still hold, though. Many (but not all) of the locations for J. slatteryi noted by Conlan (1990) for British Columbia are actually for J. carltoni, as this latter species was not recognized at that time to occur outside of California. It was only through recent molecular analysis that J. carltoni was discovered to occur also in British Columbia. Subsequent re-examination of collections found J. carltoni also in Oregon. A “ J. slatteryi ” noted by Conlan (1990) from Alaska (University of Alaska loan, Latouche T1, M75, 5 Sept. 1975) may also be J. carltoni but this specimen was no longer available for study and so is omitted from the distribution map. Given the similarity in environmental conditions between southeastern Alaska and British Columbia, it is likely that J. carltoni ranges northwards at least into southeastern Alaska. Jassa carltoni has not been found outside of the Pacific coast of North America, however.Published as part of Conlan, Kathleen E., Desiderato, Andrea & Beermann, Jan, 2021, Jassa (Crustacea: Amphipoda): a new morphological and molecular assessment of the genus, pp. 1-191 in Zootaxa 4939 (1) on page 126, DOI: 10.11646/zootaxa.4939.1.1, http://zenodo.org/record/458062
Jassa shawi Conlan 1990
No full text<i>Jassashawi</i> Conlan, 1990 <p>(Table 12, Figs 83–84)</p> <p> <b>Diagnosis.</b></p> <p> <b>Both sexes:</b></p> <p> <i>Mandibular palp</i>: article 2, dorsal margin without a fringe of setae.</p> <p> <i>Maxilla 1</i>: without a seta or setal cluster at the base of the palp article 1.</p> <p> <i>Gnathopod 1</i>: basis, anterolateral margin with one short seta at distal angle; carpus with a short seta medially, at the anterodistal junction of the propodus (seta length <15% of the carpus length).</p> <p> <i>Gnathopod 2</i>: basis without a row of setae along the anterolateral margin; carpus and propodus, setae on the anterior margin short and simple (setal length <basis width).</p> <p> <i>Pereopods 5–7</i>: propodus not expanded anteriorly.</p> <p> <i>Uropod 1</i>: ventral peduncular spinous process very short, underlying only about 10% of the longest ramus.</p> <p> <i>Uropod 3</i>: inner ramus without spines mid-dorsally (with only the single apical spine).</p> <p> <i>Telson</i>: tip without apical setae (only the usual short setae at each dorsolateral cusp).</p> <p> <b>Thumbed male:</b> unknown.</p> <p> <b>Adult female:</b></p> <p> <i>Antenna 2</i>: without plumose setae on the flagellum and peduncular article 5.</p> <p> <i>Gnathopod 2</i>: propodus, palm concave, palmar defining angle acute.</p> <p> <b>Remarks.</b> Conlan (1990) was in error about the absence of a seta at the anterodistal junction of carpus with the propodus on gnathopod 1. There is one present slightly medially (Fig. 83). The seta is short and difficult to see but present in both sexes. Only 2 subadult males, 2 adult females and 1 immature were available for study so variation and the appearance of the thumbed adult male could not be determined.</p>Published as part of <i>Conlan, Kathleen E., Desiderato, Andrea & Beermann, Jan, 2021, Jassa (Crustacea: Amphipoda): a new morphological and molecular assessment of the genus, pp. 1-191 in Zootaxa 4939 (1)</i> on pages 131-133, DOI: 10.11646/zootaxa.4939.1.1, <a href="http://zenodo.org/record/4580622">http://zenodo.org/record/4580622</a>
Jassa justi Conlan 1990
No full textJassajusti Conlan, 1990 (Table 13, Fig. 92) Diagnosis. Both sexes: Mandibular palp: article 2, dorsal margin without a fringe of setae. Maxilla 1: without a seta or setal cluster at the base of the palp article 1. Gnathopod 1: basis, anterolateral margin with a fringe of short, spine-like setae; carpus without a single or cluster of setae at the anterodistal junction of the propodus. Gnathopod 2: basis with a row of short, spine-like setae along the anterolateral margin; carpus and propodus, setae on the anterior margin short and simple (setal lengths <20% of the basis width). Pereopods 5–7: propodus not expanded anteriorly. Uropod 1: ventral peduncular spinous process underlying about 1/2 of the longest ramus. Uropod 3: inner ramus without spines mid-dorsally (with only the single apical spine). Telson: tip without apical setae (only the usual short setae at each dorsolateral cusp). Thumbed male: Antenna 2: without plumose setae on the flagellum and peduncular article 5. Gnathopod 2: propodus, palmar defining spines produced on a ledge; dactyl expanded close to the junction with the propodus but not centrally toothed. Adult female: Antenna 2: without plumose setae on the flagellum and peduncular article 5. Gnathopod 2: propodus, palm concave, dactyl fitting into a depression between the palm and the defining spines. Remarks. Jassa justi shares with Jassa alonsoae, J. fenwicki, J. ingens and J. hartmannae the fringeof spine-like setae along the anterolateral margin of gnathopod 1. Gnathopod 2 sports a similar fringe. The proximal origin of the thumb in the holotype male suggests that it is a major form, in which case the pronounced palmar defining spines may be typical of all thumbed males, rather than being lost in larger major forms. This retention of the palmar defining spines by major form thumbed males would be similar to J. ingens (Fig. 99), while in most species the spines are lost. Jassa hartmannae and J. kjetilanna may also retain their spines as they are similarly produced but sample size is small. There were no minor form males of J. justi available for study. Like J. fenwicki and J. ingens, the propodus spines on pereopods 5–7 are pronounced, though the propodus is differently shaped and not expanded.Published as part of Conlan, Kathleen E., Desiderato, Andrea & Beermann, Jan, 2021, Jassa (Crustacea: Amphipoda): a new morphological and molecular assessment of the genus, pp. 1-191 in Zootaxa 4939 (1) on pages 143-144, DOI: 10.11646/zootaxa.4939.1.1, http://zenodo.org/record/458062
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