Euryrhynchus burchelli Calman, 1907,

Pachelle, Paulo P. G. & Tavares, Marcos, 2018, The freshwater shrimp family Euryrhynchidae Holthuis, 1950 (Crustacea: Decapoda: Caridea) revisited, with a taxonomic revision of the genus Euryrhynchus Miers, 1878, Zootaxa 4380 (1): 38-48

publication ID

https://doi.org/10.11646/zootaxa.4380.1.1

publication LSID

lsid:zoobank.org:pub:9DC29ECD-8C44-4F42-BA0E-9B0C830A7C73

persistent identifier

http://treatment.plazi.org/id/03D987F9-FF9F-8560-A4D4-F00A6325BD3F

treatment provided by

Plazi

scientific name

Euryrhynchus burchelli Calman, 1907
status

 

Euryrhynchus burchelli Calman, 1907 

( Figs. 24–30View FIGURE 24View FIGURE25View FIGURE 26View FIGURE 27View FIGURE 28View FIGURE 29View FIGURE 30, 63BView FIGURE 63)

Euryrhynchus Burchelli Calman, 1907: 297  , figs. 2–8.

Euryrhynchus Burchelli  — Chappuis 1927: 88.

Euryrhynchus burchelli  — Spandl 1926: 90; Gordon 1935: 326; Chace 1943: 35; Holthuis 1950a: 2; Holthuis 1951: 9, pl. 2, figs. g –m; Chace 1954: 324; Holthuis 1956: 68; Holthuis 1966: 6, figs. 2, 3 [= E. amazoniensis Tiefenbacher, 1978  , non E. burchelli Calman, 1907  ]; Irmler 1975: 391 [partim]; Powell 1976: 884; Hobbs et al. 1977: 1, appendix 1; Tiefenbacher 1978: 185, fig. 2c –d; Gomes Corrêa 1980: 258; Rodríguez 1981: 46; Kensley & Walker 1982: 3, fig. 3a –b; Coelho & Ramos-Porto 1985: 407, tab. I; Walker & Ferreira 1985: 266, tab. 1; Holthuis 1986: 591; Magalhães 1988: 41, tab. I, figs. 1–18; Magalhães & Walker 1988: 281, tab. I, figs. 5, 10, 15, 20; Ramos-Porto & Coelho 1990: 108; Odinetz Collart & Magalhães 1994: 2460, tab. 1, 2, fig. 5; Pereira & García 1995: 117, tab. 1; Pereira 1997: 3 (fig. 1), tab. 6; Ramos-Porto & Coelho 1998: 330; Barros & Pimentel 2001: 20; Walker 2001: 565; Melo 2003: 324: figs. 176, 177; Vieira 2003: 60, tabs. 3.1, 3.2, figs. 3.3, 3.4 [?]; De Grave 2007: 193; Magalhães & Pereira 2007: 119, tabs. 1–4; Kemenes et al. 2010: 37; De Grave & Fransen 2011: 309; Vogt 2013: 91; Pimentel & Magalhães 2014: 1302, fig. 2 [partim]; Ashelby et al. 2015: 16; Santos et al. 2018: 24, figs. 2A –E, 6.

Eyryrhynchus burchelli  — Santos et al. 2018: figs. 2, 6 [lap. cal.].

Material examined. Holotype: ♂? (heavily damaged, without chelipeds, pereopods, pleopods and telson) (cl 4.8 mm), OUMNH.ZC. 2006-21 -0002, Brazil, Pará, from well  , coll. W.J. Burchell, 04.ix.1829. Additional material: Brazil: 1♀ (cl 3.2 mm), MZUSP 32749View Materials, Amapá, Macapá city, igarapé at Mr Marcondes property  , coll. J. Cunha, 06.iii.2005; 2♂ (cl 3.5, 3.1 mm), 2♀ (cl 4.3, 3.6 mm), MZUSP 8180View Materials, Amazonas, near Manaus, Igarapé Tarumã- Mirim   , coll. C. Magalhães, 23.vi.1983; 3♂ (cl 3.2–3.0 mm), 8♀ (cl 4.1– 3.3 mm), MZUSP 16995View Materials, Amazonas, left bank of Rio Negro , near Manaus, Igarapé Mari-Tarumãzinho  , coll. O. Collart, 08.iii.1989; 1♂ (cl 3.5 mm), 2♀ (cl 3.3, 2.8 mm), MZUSP 16998View Materials, Amazonas, left bank of Rio Negro, near Manaus, Lago do Acural-Tarumãzinho   , coll. O. Collart, 27.xi.1989; 4♂ (cl 3.5– 3.1 mm), 15♀ (cl 5.0– 2.5 mm), 45♀ ov (cl 4.7– 3.5 mm), MZUSP 16999View Materials, Amazonas, Manaus, Rio Negro, Igarapé Mari-Tarumãzinho   , coll. O. Collart, 13.iv.1989; 3♂ (cl 3.7– 2.5 mm), 1♀ (cl 2.5 mm), MZUSP 32748View Materials, Amazonas, Barcelos, Rio Negro , in stomach content of Potamotrygon  sp.  , coll. J.B. Mendonça Jr., 23.x.2008; 1♂ (cl 4.1 mm), 1♀ (cl 5.2 mm), MZUSP 34203View Materials, Amazonas, Igarapé Santa Fé , 01°00.310'S 62°12.182'WGoogleMaps  , coll. J.B. Mendonça Jr., 01.ix.2011; 7♂ (cl 4.0– 2.4 mm), 10♀ (cl 5.0– 2.7 mm), 3♀ ov (cl 4.3–4.0 mm), INPA 0 95, Amazonas, near Manaus, Igarapé Tarumã-Mirim, igapó, in submerged leaflitter  , coll. C. Magalhães, 23.vi.1983 and 28.ii.1984; 8♀ (cl 4.4– 3.8 mm), 2♀ ov (cl 4.2, 4.1 mm), INPA 0 96, Amazonas, near Manaus, Igarapé Tarumã-Mirim  , coll. C. Magalhães, 23.vi.1983; 4♂ (cl 4.0– 2.5 mm), 5♀ (cl 4.3–2.0 mm), INPA 105View Materials, Amazonas, Lower Rio Negro, Caju and Cristalino lakes, in submerged leaflitter  , coll. C. Magalhães, 21.i.1983 and 13.iv.1983; 1♀ (cl 4.0 mm), INPA 106View Materials, Amazonas, Rio Negro, Arquipélago Anavilhanas , igapó  , coll. M. Goulding, iii.1982; 1♀ (cl 4.4 mm), INPA 205View Materials, Amazonas, right bank of Rio Uatumã, igapó near Igarapé Miriti , in submerged leaflitter  , coll. C. Magalhães, 12.vii.1985; 4♂ (cl 3.8– 2.5 mm), 5♀ (cl 3.8– 2.7 mm), SMF 7806View Materials, Pará, Rio Tapajós, Santarém, Igarapé Irurá , 02°25.76'S 54°44.83'W, in submerged vegetationGoogleMaps  , coll. H. Sioli, 01.xii.1940 – 01.iii.1941; 3♂ (cl 3.2–3.0 mm), 6♀ (cl 4.8–4.0 mm), 3♀ ov (4.1–4.0 mm), MZUSP 16904View Materials, Pará, Salvaterra, Marincoara village , 00°43'45.5''S 48°35'08.5''W, in well, among leaflitterGoogleMaps  , coll. J.M. Cunha & E. Trajano, 27.xii.2005; 9♂ (cl 5.5– 4.1 mm), 1♀ (cl 4.7 mm), MZUSP 16905View Materials, Pará, Salvaterra, Mr. Silvio Colares property, 00°45'32.2''S 48°31'31.4''W, in wellGoogleMaps  , coll. J.M. Cunha & E. Trajano, 26.xii.2005; 1♂ (cl 3.5 mm), 1♀ (cl 4.1 mm), 4♀ ov (cl 4.2– 3.4 mm), INPA 1108View Materials, Pará, Santarém, Alter-do-Chão, Lago Jacundá   , coll. C.R. García, 16.ii.2000; 5♂ (cl 4.3– 2.6 mm), 7♀ (cl 4.3– 2.9 mm), 1♀ ov (cl 3.9 mm), INPA 1123View Materials, Pará, Santarém, Alter-do-Chão, Lago Preto   , coll. C.R. García, 17.ii.2000; 1♀ (cl 4.4 mm), INPA 1127View Materials, Pará, Santarém, Alter-do-Chão, Lago Minitiapina   , coll. C.R. García, 19.ii.2000; 2♂ (cl 4.1, 3.8 mm), 6♀ (cl 4.1– 3.9 mm), 11♀ ov (cl 3.9– 3.6 mm), INPA 1132View Materials, Pará, Santarém, Alter-do-Chão, Lago Verde   , coll. C.R. García, 18.ii.2000; 3♀ (cl 3.3– 3.2 mm), INPA 1136View Materials, same collection data as previous specimens; 2♂ (cl 4.0, 3.6 mm), 2♀ (cl 3.7, 3.5 mm), INPA 1144View Materials, Pará, Santarém, Alterdo-Chão, Lago Iruçanga   , coll. C.R. García, 21.ii.2000; 2♂ (cl 2.9, 2.6 mm), 4♀ (cl 4.3– 3.1 mm), 1♀ ov (cl 3.3 mm), INPA 1145View Materials, Pará, Santarém, Alter-do-Chão, Lago Jacaré   , coll. C.R. García, 21.ii.2000; 1♀ (cl 3.5 mm), INPA 1148View Materials, Pará, Santarém, Alter-do-Chão, Lago das Mangueiras   , coll. C.R. García, 21.ii.2000; 1♂ (cl 3.4 mm), 2♀ (cl 4.5–4.0 mm), INPA 1202View Materials, Pará, left bank of Rio Tapajós, near the mouth of Rio Cupari   , coll. C. Magalhães & L.R. Py-Daniel, 27.x.1991; 3♀ (cl 3.4– 2.7 mm), INPA 1203View Materials, Pará, right bank of Rio Tapajós, igarapé near Rio Cupari   , coll. C. Magalhães & J. Zuanon, 26.x.1991; 3♂ (cl 4.4– 3.2 mm), 2♀ (cl 4.2– 3.8 mm), 1♀ ov (cl 4.2 mm), MPEG 565View Materials, Pará, Santarém Novo, Igarapé Bacuri   , coll. F.R. Pimentel & R.N. Yuki, 26.iv.1998; 6♂ (cl 5.1– 3.7 mm), 1♀ (cl 4.1 mm), MPEG 652View Materials, Pará, Belém, Campus de Pesquisa do Museu Paraense Emílio Goeldi , 01°26'41''S 48°25'34''WGoogleMaps  , coll. F.R. Pimentel & J.O. Dias, 24.iii.2000; 3♂ (cl 4.4– 3.5 mm), 2♀ (cl 3.8, 2.6 mm), MPEG 716View Materials, Pará, Altamira , Ilha do Forno  , coll. R.M. Souza & Dionisio, 18.xii.2000; 2♂ (cl 3.8, 3.0 mm), 1♀ (cl 4.0 mm), MPEG 721View Materials, Pará, Melgaço, Floresta Nacional de Caxiuanã   , coll. Equipe Curso de Campo, 07.xi.1999; 3♂ (cl 4.0– 3.9 mm), 4♀ (cl 3.9– 3.7 mm), MPEG 724View Materials, Pará, Melgaço, Floresta Nacional de Caxiuanã   , coll. Equipe Curso de Campo, 06.xi.1999; 1♂ (cl 2.6 mm), MZUSP 34204View Materials, Roraima, Igarapé Pretinho , 00°55.988'S 62°06.511'W, in leaflitterGoogleMaps  , coll. J.B. Mendonça Jr., 09.ix.2011; 3♀ (cl 4.6–3.0 mm), 4♀ ov (cl 4.6– 3.7 mm), MZUSP 34205View Materials, Roraima, Igarapé Pupunha , 01°00'36.4''S 62°05'19.6''W, in submerged leaflitter and loose trunksGoogleMaps  , coll. J.B. Mendonça Jr., 05.ix.2011; 2♂ (cl 4.9, 3.9 mm), MZUSP 34206View Materials, Roraima, 1.9 km from Vila de Caicubi , 01°01.538’S 62°05.079’W, temporary pool, in submerged leaflitterGoogleMaps  , coll. J.B. Mendonça Jr., 11.ix.2011; 53♂ (cl 6.0– 3.6 mm), 37♀ (cl 6.1– 4.2 mm), 48♀ ov (cl 5.8– 4.3 mm), 2 juveniles (cl 2.1, 1.7 mm), MZUSP 34207View Materials, Roraima, Sítio São Bento, left bank of Rio Jufari , 00°59'25.3''S 62°09'50.7''W, temporary poolGoogleMaps  , coll. J.B. Mendonça Jr., 07.ix.2011; 32♂ (cl 5.6–4.0 mm), 10♀ (cl 5.7– 5.3 mm), 5♀ ov (cl 5.3– 5.2 mm), MZUSP 34208View Materials, Roraima, Vila Caicubi , 01°01'28.5''S 62°05'20.0''W, temporary pool, in submerged leaflitterGoogleMaps  , coll. J.B. Mendonça Jr., 10.ix.2011; 3♂ (cl 5.6– 4.9 mm), 1♀ov (cl 5.3 mm), OUMNH.ZC.2016-01-027, same collection data as previous lot.

Type locality. A well in Pará ( Brazil). 

Distribution. Brazil (Amapá, Amazonas, Pará, Roraima) ( Tiefenbacher 1978; Vieira 2003; Pimentel & Magalhães 2014; Santos et al. 2018; present study) ( Fig. 63BView FIGURE 63).

Redescription. Carapace smooth, non-setose. Branchiostegite smooth, non-granulated, anterior margin produced beyond infra-orbital angle, branchiostegal groove weakly marked. Pterygostomial region rounded or angular, not produced anteriorly. Antennal spine conspicuous, placed at same level than infra-orbital angle, partially obscuring infra-orbital angle. Hepatic and branchiostegal spines absent. Rostrum triangular in dorsal view, depressed dorsally, almost reaching or slightly overreaching distal margin of eyes, with row of few long simple setae along each dorsolateral margin ( Fig. 24A –CView FIGURE 24).

Fourth thoracic sternite with transversal ridge produced into low, wide lobe medially. Fifth thoracic sternite with transversal ridge produced into broad lobe medially. Sixth and seventh thoracic sternites with transversal ridge incomplete, interrupted medially. Eigth thoracic sternite with transverse ridge complete, median region produced anteriorly, V-shaped ( Fig. 24D, EView FIGURE 24).

Pleon smooth, non-setose. First to fifth pleurae with postero-ventral margin rounded. Second pleura expanded in both sexes, overlapping both first and third pleura by almost half width. Third to fifth pleurae with long simple setae on antero-ventral margins. Sixth pleura with postero-ventral margin angular, ventromesial margin with fringe of plumose setae. First to third sternites of males and immature females with median process, third one smallest, sometimes inconspicuous. Fourth to sixth sternites smooth, unarmed. Pre-anal plate smooth, lacking longitudinal carina, distally straight.

Telson broad, up to twice as long as wide. Lateral margins of telson nearly straight, parallel, not noticeably tapering towards distolateral angle. Distal region of telson broadly rounded, sometimes varying in length, fringed with numerous long, annulate, plumose setae. Distolateral margins of telson with row of few simple setae of variable length. Distolateral angle of telson with pair of cuspidate setae, mesial seta about twice as long as lateral seta. Dorsal surface of telson with two pairs of cuspidate setae, anterior pair usually placed on proximal third of telson length, posterior pair usually placed on medial third of telson length, inserted more mesially than anterior pair. Lateral margin of telson with few long, simple setae. Anal tubercles absent ( Fig. 24FView FIGURE 24).

Eyes short, not overreaching proximal half of basal article of antennular peduncle; cornea somewhat kidneyshaped in dorsal view, occupying the entire distal region and most of lateral region of ocular peduncle, basal line weakly marked, ommatidia hexagonal, ocellar spot (“ocellus”) absent. Ocular peduncles nearly immobile, basal articulation reduced, inconspicuous ( Fig. 24A –CView FIGURE 24).

Antennular peduncle with stylocerite blunt, not produced distally, with cluster of long, simple setae on distodorsal region. Basal article with distolateral angle produced into sharp tooth, reaching or slightly overreaching distolateral projection of medial article, mesial margin fringed with plumose setae, proximal third with ventromesial sharp spine. Medial article almost as long as wide, fringed with plumose setae on both mesial and lateral margins, distolateral and distomesial angles bluntly produced. Distal article quadrate. Lower antennular flagellum long and uniramous. Upper antennular flagellum divided into two rami fused at base by one article; main ramus similar to lower antennular flagellum; accessory ramus shorter and thicker than other antennular flagella, with 3 to 5 free articles, increasing in number in large specimens, length of articles variable, aesthetascs restricted to distal margin of apical article ( Fig. 24A, GView FIGURE 24).

Antenna with scaphocerite broad, about 1.5 as long as wide, slightly overreaching antennular peduncle, lamella fringed with plumose setae, lateral margin straight or slightly convex, with sharp distal tooth reaching or slightly overreaching lamella. Carpocerite about 3 times as long as wide, reaching distal third of scaphocerite. Basicerite with sharp distolateral tooth reaching proximal fourth of carpocerite, ventral margin of basicerite produced anteriorly into broad, triangular tooth ( Fig. 24A, CView FIGURE 24).

Mouthparts typical for genus. Third maxilliped pediform. Coxa with broad lateral plate, single arthrobranch present. Basis short, about 1/3 length of antepenultimate article of endopod. Endopod with 3 articles, furnished laterally with long simple setae; antepenultimate article longest, furnished mesially with simple setae; penultimate article about 0.7 times length of antepenultimate article, furnished mesially with rows of serrate setae; ultimate article shortest, about 0.8 times length of penultimate article, furnished mesially with rows of serrate setae. Exopod long, reaching proximal third of penultimate article of endopod, fringed with long plumose setae ( Fig. 24HView FIGURE 24).

First pereopod slender, short, carpus and chela overreaching scaphocerite when fully extended. Merus about twice as long as ischium. Carpus about same length or slightly longer than merus. Chela about 0.7 times length of carpus, distal half furnished ventrally with tufts of long serrulate setae, fingers equal in length with palm, fingertips corneous ( Fig. 24IView FIGURE 24).

Second pereopod stout, long, pair similar in form, equal or subequal in size in both sexes. Articles varying in size with age, usually slender in small individuals and stout in large individuals. Surface of ischium to dactylus non-granulated, even in large specimens. Merus fused with ischium, distoventral angles with pair of subdistal spines, one on each angle. Carpus in adults stout in dorsal view, approximately twice as long as wide, reaching distal third of palm, distomesial angle with subdistal spine. Chela with proximal transverse constriction near articulation with carpus, fingers with pair of teeth on proximal half of each cutting edge, proximal tooth of fixed finger indented in large specimens, teeth varying in shape and size with age, fingertips corneous ( Figs. 25View FIGURE25, 26View FIGURE 26).

Third pereopod stouter than fourth and fifth pereopods. Merus about 1.5 as long as ischium. Carpus about 0.5 as long as merus. Propodus about 1.7 as long as carpus, ventral margin with 9 to 15 cuspidate setae, dorsal margin usually without cuspidate setae. Dactylus biunguiculate, at least 0.4 as long as propodus, dorsal margin indented, with pair of cuspidate setae ( Fig. 27A, BView FIGURE 27).

Fourth pereopod similar to third pereopod, but thinner. Propodus with ventral margin furnished with 9 to 14 cuspidate setae, dorsal margin usually with single dorsomesial cuspidate seta on distal third (sometimes additional cuspidate seta present on medial third), distodorsal angle with cuspidate seta. Dactylus dorsal margin indented, with subdistal pair of cuspidate setae ( Fig. 27C, DView FIGURE 27).

Fifth pereopod similar to fourth pereopod, but longer. Carpus about 0.75 as long as merus. Propodus about 1.4 as long as carpus, ventral margin furnished with 7 to 12 cuspidate setae, distal third with 3 to 9 rows of serrate setae, dorsal margin without cuspidate seta. Dactylus about 0.4 as long as propodus, dorsal margin indented, with subdistal pair of cuspidate setae ( Fig. 27E, FView FIGURE 27).

Male first pleopod protopodite furnished with short row of cuspidate setae on distomesial margin. Exopod at least twice as long as endopod, fringed with few plumose setae. Endopod furnished with cuspidate setae along distomesial margin, plumose setae absent, appendix interna absent. Second pleopod exopod shorter than endopod, fringed with plumose setae. Endopod elongated, straight, modified into gonopod, apex rounded, dorsomesial region with 3 rows of cuspidate setae, mesial row with longer setae, starting at level with the appendix interna and almost reaching apex of endopod, dorsal rows shorter, restricted to the distal half of endopod, not reaching mesial row distally, blocking exopod mesially, appendix interna developed, appendix masculina absent. Third to fifth pleopods protopodites furnished with few long setae on lateral margin. Endopod shorter than exopod, both fringed with plumose setae, appendix interna present on all pleopods, not reaching tip of endopod ( Figs. 29A –FView FIGURE 29, 30View FIGURE 30).

Female first and second pleopod endopods similar in length with exopods, margins smooth or fringed with fewer plumose setae than exopod, appendix interna absent. Third to fifth pleopod protopodites furnished with few long setae on lateral margins. Endopods shorter than exopods, both fringed with plumose setae, appendix interna present on all pleopods, not reaching tip of endopod ( Fig. 29G –KView FIGURE 29).

Uropod broad. Protopodite with well-developed lateral process, at least twice as long as mesial process, curving mesially, furnished distodorsally with transverse row of long simple setae, distomesial angle produced into triangular tooth. Endopod narrower than exopod, fringed with long, annulate, plumose setae, distolateral margin with few long simple setae. Exopod fringed with long, annulate, plumose setae, distal margin somewhat truncated, straight, with cluster of few long simple setae on distolateral margin, diaeresis incomplete, with 5 to 11 cuspidate setae, growing in size towards mesial margin, increasing in number with age ( Fig. 24JView FIGURE 24).

Remarks. Euryrhynchus burchelli  can be easily separated from all species of Euryrhynchus  by the armature of the second pereopod (carpus with spine on distomesial angle and merus with pair of spines on distoventral angles) ( Fig. 25DView FIGURE25). It is also the only species in the family without fine granules on the second pereopod ( Figs. 25View FIGURE25, 26View FIGURE 26). Some of the examined specimens presented a series of asymmetrical abnormalities, including the distribution of cuspidate setae on third to fifth pereopods dactyli and propodi, telson and uropodal diaeresis ( Fig. 28A –C, E –JView FIGURE 28 [arrows]), the number of spines on the second pereopod merus ( Fig. 28DView FIGURE 28), and a male with a gonopod on the left third pleopod ( MZUSP 34207). Holthuis (1966) reported specimens of E. burchelli  from Lago Jari (Amazonas, Brazil), which were later correctly reidentified as E. amazoniensis  by Tiefenbacher (1978). Euryrhynchus amazoniensis  was misinterpreted by Holthuis (1966) as E. burchelli  on the account of an acute distoventral projection on the second pereopod merus (cf. Holthuis 1966: 10, fig. 2k). However, that spine differs in shape and position from the one typically found in E. burchelli  (cf. Fig. 25DView FIGURE25), thus suggesting that it might represent an aberrant specimen (see examples of aberrant specimens in Fig. 28View FIGURE 28). Although Holthuis’ (1966) material was not examined in the present study, the specimen illustrated by the author indeed presents typical key characters of E. amazoniensis  and might well belong to E. amazoniensis  . These characters include uropodal protopodite with distomesial angle of lateral process not produced into a tooth (compare Figs. 11E, FView FIGURE 11, 24JView FIGURE 24; Holthuis 1966: fig. 2b), presence of fine granules on the second pereopod (visible on merus of fig. 2k in Holthuis 1966), and armature of carpus and merus of the second pereopod (compare Figs. 14CView FIGURE 14, 25DView FIGURE25; Holthuis, 1966: fig. 2k).

As currently understood Euryrhynchus burchelli  occurs exclusively in the Brazilian Amazon basin ( Fig. 63BView FIGURE 63). Coelho & Ramos-Porto (1985: tab 1) listed E. burchelli  from both the Paraná basin ( Brazil) and the Guianas, but mentioned no voucher specimens to support their records, as no further material has come to light from these regions, these records are herein considered erroneous. Vieira (2003) reported E. burchelli  for the first time from Amapá ( Brazil), but provided no illustrations nor deposited voucher specimens. Taking into account that E. tomasi  , a species described a few years later, is also known Amapá ( Fig. 65AView FIGURE 65, green circles, location 4), reexamination of Vieira's specimens is desirable. It is also worth noting that Euryrhynchus burchelli  and E. tomasi  are similar to each other, differing mainly in the armature of the second pereopod carpus. Pimentel & Magalhães (2014) also reported three lots of E. burchelli  from Amapá ( INPA 1082; IEPA 0 0 27, 0050) based upon specimens identified in 2002 (as per the label in the jar of lot INPA 1082). And indeed, reexamination of the lot INPA 1082 revealed that the specimens in this lot actually belong to E. tomasi  . Unfortunately, the lots from Amapá ( IEPA 0 0 27, 0050) no longer exist in the IEPA collections and thus were not examined.

INPA

Instituto Nacional de Pesquisas da Amazonia

MZUSP

Museu de Zoologia da Universidade de Sao Paulo

IEPA

Istituto di Entomologia Agraria dell'Universita

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Euryrhynchidae

Genus

Euryrhynchus

Loc

Euryrhynchus burchelli Calman, 1907

Pachelle, Paulo P. G. & Tavares, Marcos 2018
2018
Loc

E. amazoniensis

Tiefenbacher 1978
1978
Loc

Euryrhynchus

Burchelli Calman 1907: 297
1907
Loc

Euryrhynchus Burchelli

Burchelli Calman 1907
1907
Loc

Euryrhynchus burchelli

Calman 1907
1907
Loc

E. burchelli

Calman 1907
1907
Loc

burchelli

Calman 1907
1907