Excorallana richardsoni Lemos de Castro, 1960

Excorallana richardsoni Lemos de Castro, 1960 View in CoL

( Figs. 11 View Figure 11 , 12 View Figure 12 )

Excorallana richardsoni Lemos de Castro, 1960: 64– 66 View in CoL , figs. 19–27. – Delaney, 1984: 2, 3, 5 and 15.– Carvacho and Yañez, 1971: 130. – Coelho and Koening, 1972: 253. – Pires-Vanin, 1998: 611.

Corallana acuticauda View in CoL . – Richardson, 1900: 157, fig. 1-2. Pires-Vanin, 1998: 612. [not Corallana acuticauda Miers, 1881 View in CoL ]

Excorallana richardsonae . – Delaney, 1989: 6 (misspelling).

Material examined. 2 adult and 3 juvenile females ( MOUFPE 149 View Materials ), GM 189, Amapá , 03°50’00”N 49°55’00”W, 69 m depth GoogleMaps . 1 adult female ( MOUFPE 119 View Materials ), AS # 1923, Amapá , 03º55’30”N 50º20’00”W, 88 m depth GoogleMaps . 1 adult male ( MOUFPE 13.289 View Materials ), NE III # 93 /3ºP, Amapá , 03º55’5”N 50°20’03”W; 70 m depth GoogleMaps . 1 adult male, 1 adult female ( MOUFPE 13 View Materials . 297), NE I # 213/6ºP (REVIZEE), Pará , 00°13’00”N 46°40’00”W, 87 m depth GoogleMaps . 1 adult male ( MOUFPE 117 View Materials ), GM 28, Pará , 00°20’00”N 46°03’05”W GoogleMaps . 1 adult female ( MOUFPE 139 View Materials ), AS # 1763, Pará , 00º25’00”S 47º17’W, 23 m depth GoogleMaps . 1 adult female ( MOUFPE 134 View Materials ), GM 200, Pará , 00°30’10.7”S 48°15’19.2”W, 92 m depth GoogleMaps . 1 sex undefined ( MOUFPE 128 View Materials ), AS # 1751, Pará , 00º 37’00”S 44º40’00”W, 44 m depth GoogleMaps . 1 adult female ( MOUFPE 124 View Materials ), GM 42, Pará , 01°28’00”N 46°51’00”W, 47 m depth GoogleMaps . 1 juvenile female ( MOUFPE 13.298 View Materials ), NE III # 75 A/ 3ºP, Pará , 01º28’00”S 38º40’00”W, 54 m depth GoogleMaps . 1 sex undefined ( MOUFPE 12.961 View Materials ), AS 1767, Pará , 01°32’05”N 47°24’05”W, 63 m depth GoogleMaps . 1 adult male, 4 adult females ( MOUFPE 120 View Materials ), GM 45, Pará , 01°32’00”N 47°34’00”W, 67 m depth GoogleMaps . 1 adult female ( MOUFPE 125 View Materials ), AS # 1767 A, Pará , 01º32’30”N 47º24’30”W, 63 m depth GoogleMaps . 1 sex undefined ( MOUFPE 12.969 View Materials ), AS 1701, Pará , 01°57’00”S 037°46’00”W, 57 m depth GoogleMaps . 1 sex undefined ( MOUFPE 138 View Materials ), AS # 1719 A, Ceará , 02º15’00”S 40º33’30”W, 55 m depth GoogleMaps . 1 female ( MOUFPE 127 View Materials ), GM 116, Ceará , 02°57’05”N 48°45’00”W, 81.5 m depth GoogleMaps . 1 adult male, 1 adult female ( MOUFPE 136 View Materials ), AS # 1857, Ceará , 03º35’00”S 37º57’00”W, 49 m depth GoogleMaps . 1 juvenile female ( MOUFPE 131 View Materials ), ITA 92, Pernambuco , 07º36’00”S 34º48’00”W, 0.65 m depth GoogleMaps . 2 sex undefined ( MOUFPE 140 View Materials ), ITA 74, Pernambuco , 07º41’00”S 34º47’00”W, 5.2 m depth GoogleMaps . 1 adult female ( MOUFPE 148 View Materials ), ITA 46, Pernambuco , 07º43’36”S 34º49’24”W, 3.7m depth GoogleMaps . 1 juvenile female ( MOUFPE 144 View Materials ), ITA 43, Pernambuco , 07º44’00”S 34º48’00”W, 1.6 m depth GoogleMaps . 1 adult female, 1 adult male ( MOUFPE 116 View Materials ), PE. 29 A, Pernambuco , 07º45’00”S 34º46’08”W, 14 m depth GoogleMaps . 1 adult female ( MOUFPE 150 View Materials ), ITA 27, Pernambuco , 07º49’00”S 34º49’13” W, 0.8 m depth GoogleMaps . 1 sex undefined ( MOUFPE 118 View Materials ), ITA Forte Orange reefs, Pernambuco, 7°49’00”S 34°49’13.0”W GoogleMaps . 1 adult female ( MOUFPE 115 View Materials ), ITA 11, Pernambuco , 7º50’00”S 34º49’00”W, 1 m depth GoogleMaps . 1 adult female ( MOUFPE 137 View Materials ), Candeias 27 – 108, Pernambuco, 7°50’08”S 34°42’00”W GoogleMaps . 1 sex undefined ( MOUFPE 151 View Materials ), ITA 17, Pernambuco , 7º51’00”S 34º49’00”W, 3.9 m depth GoogleMaps . 2 adult females ( MOUFPE 133 View Materials ), CAN 95, Pernambuco , 8°09’07”S 34°45’00”W, 31.5 m depth GoogleMaps . 1 adult female ( MOUFPE 147 View Materials ), REC 95, Pernambuco , 8º09’07”S 34º45’00”W, 31.5 m depth GoogleMaps . 1 juvenile female ( MOUFPE 122 View Materials ), REC 4, Pernambuco , 8º09’09”S 34º45’08”W, 27 m depth GoogleMaps . 1 sex undefined ( MOUFPE 129 View Materials ), CAN 19, Pernambuco , 8º10”00”S 34º42’00”W . 1 sex undefined ( MOUFPE 126 View Materials ), CONDEPE Suape # N17, Pernambuco, 8º10’00”S 34º51’05”W, 13 m depth GoogleMaps . 1 sex undefined ( MOUFPE 121 View Materials ), CONDEPE Suape #9, Pernambuco, 8º30’00”S 34º58’00”W, 9 m depth GoogleMaps . 1 adult male (drawn) ( MOUFPE 123 View Materials ), Pina-PE_03, Pernambuco , 8º47’05”S 34°55’00”W, 36 m depth GoogleMaps .

Diagnosis [modified from Lemos de Castro (1960)]. Head without tubercles, with medium sized eyes, not reaching anterior margin of head. Antennular peduncle with article 1 very dilated. Antenna reaching pereonite 2. Frontal lamina trapezoidal ( Fig. 17 View Figure 17 ). Pereonites 1–5 smooth dorsally, 6 and 7 with small tubercles (nearly imperceptible) laterally on posterior margin. Pleonite 1 dorsally smooth. Pleonite 2 with small tubercles on posterior margin. Pleon with longitudinal groove in the middle, extending from pleonites 3–5, with longitudinal line of tubercles.Pleonites 3–5 with double transversal line of tubercles. Pleotelson triangular, acute apex, with lateral incision on each side; anterior margin with four tubercles, arranged in two groups (2-2); lateral margins heavily coated with setae; midline with soft groove; two small tubercles prior to lateral incisions. Uropods slightly surpassing tip of pleotelson, margins heavily coated with long setae.

Remarks. According to Lemos de Castro (1960), the uropods have the same length as the pleotelson, while in our material, they exceed the pleotelson. Also, the two rows of posterior tubercles on pereonites 6 and 7 found in E. richardsoni were not found, but instead one row of very small tubercles, and the median area was smooth dorsally. Lemos de Castro (1960) also noted that E.richardsoni has two rows of tubercles on pleonites 2–5, while the specimens examined herein have only two rows of tubercles on the posterior margin of the segment. Finally, Lemos de Castro (1960) reported that the males identified as Corallana acuticauda Miers, 1881 (now assigned to genus Excorallana ) from Alagoas, Brazil, by Richardson (1900) was actually a misidentification, and the specimens belong to E. richardsoni . Pires-Vanin (1998) agreed with Lemos de Castro’s observation, and therefore the geographical distribution of E. acuticauda should be restricted to the type locality (Hotspur Bank off southern Bahia, Brazil).

Geographic distribution. Brazil: Amapá, Pará, Maranhão, Ceará, Rio Grande do Norte, Pernambuco, Alagoas, Espírito Santo, Rio de Janeiro ( Lemos de Castro, 1960; Coelho and Koening, 1972; Koening, 1972; Pires-Vanin, 1998; this study) ( Fig. 12 View Figure 12 ).

Depth range: 0.65–94 m.