Marmosops (Sciophanes) woodalli ( Pine, 1981 ),

Ferreira, Claudilívia, Oliveira, Ana Cristina Mendes De, Lima-Silva, Luan Gabriel & Rossi, Rogério Vieira, 2020, Taxonomic review of the slender mouse opossums of the “ Parvidens ” group from Brazil (Didelphimorphia: Didelphidae: Marmosops), with description of a new species, Zootaxa 4890 (2), pp. 201-233: 225-227

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Marmosops (Sciophanes) woodalli ( Pine, 1981 )


Marmosops (Sciophanes) woodalli ( Pine, 1981) 

Marmosa parvidens woodalli Pine, 1981: 62  .

Marmosops pinheiroi: Voss et al. 2001: 49  (part); name combination.

Holotype. USNM 393532View Materials consists of skin and skull of an adult female collected on 14 June 1968, Ronald H. Pine field no. 5054. 

Type locality. Nova Área Experimental, Utinga (1º27’S, 48º29W; the wooded area surrounding the Belém waterworks), Pará, BrazilGoogleMaps  .

Geographic distribution. It occurs on the right bank of the Xingu River , including the Marajó Island in the state of Pará, extending east to the state of Maranhão and south to the state of Tocantins, Brazil ( Figure 5View FIGURE 5)  .

Amended diagnosis. Dorsal coloration usually dark brown; tail length (LT: 92–158 mm) relatively longer in relation to head and body length ( HBL: 70–120 mm); ventral coloration white, with narrow lateral bands of graybased and white-tipped hairs arranged irregularly, which may or may not join on the throat and/or mid-chest and usually do not extend to the inner surface of the hind limbs; supraoccipital rounded in dorsal view (due to its con-vex shape); M3 with posterior portion of the stylar shelf more labially designed than the anterior portion (occlusal view); upper molars with preprotocrista and anterolabial cingulum seperated, not forming a continuous shelf along the anterior margin of the tooth crown; metaconule of the upper molars undeveloped; and talonid of the m4 usually tricuspid.

Morphological description. Marmosops woodalli  has head body size ranging from 70 to 120 mm and a longer tail (LT: 92–158 mm; Tables 4 and 5); dorsal hairs 6–9 mm long; dorsal fur smooth, usually dark brown, being slightly lighter laterally; rostrum lighter than the top of the head, presenting grayish brown coloration, with some gray hairs; mask around the eyes blackish, with conspicuous posterior portion (except in UFMT 3975; UFPA-M 371, 384; MPEG 40177, 40178, 40181); cheeks with both white hairs and gray-based and white-tipped hairs; hands covered dorsally with whitish hairs; tail bicolor, brown dark (54%, n=79) or grayish-brown (46%, n=79); tail scales arranged in a spiral, each with three hairs inserted in the posterior margin; the central hair of the triplet clearly thick-er and more pigmented than the lateral ones; white venter, with narrow lateral bands of gray-based and white-tipped hairs arranged irregularly, which may or may not join on the throat and/or mid-chest and usually do not extend to the inner surface of the hind limbs (83.3%, n=88); hands with lateral spoon shaped carpal tubercle in adult males.

Craniodentally, M. woodalli  exhibits zygomatic process of the squamosal widely overlapped dorsally by the jugal; lacrimal foramina may be exposed or not exposed in lateral view (less common); supraorbital margin slightly rounded with non-prominent crest; long nasal bones (extending slightly behind the lacrimal) and generally wider posteriorly than anteriorly (71.4%, n=49); supraoccipital with rounded shape in dorsal view, due to its markedly convex shape; paraoccipital process long and narrow; tympanic process of the alisphenoid with ventral surface oval or globose; cochlear fenestrae exposed in ventral view (except in UFMT 1251, 1258; MZUSP: AS 30; MPEG 40183, MPEG: SBER 02, 11, 15); palatine fenestrae absent, but diminutive perforations are present in the palatine and/or maxillary bones in 45% of the specimens (n=70); C1 with anterior and posterior accessory cusps in males and females; M3 with posterior portion of the stylar shelf more labially projected than the anterior portion (in oc-clusal view); upper molars with preprotocrista and anterolabial cingulum separated, not forming a continuous shelf along the anterior margin of the tooth crown (except in UFPA-M 376; MPEG 40167, 40296, MPEG: CAX 098, 293, MAR 428); metaconule of upper molars slightly developed; lower canine (c1) premolariform, (with posterior accessory cusps) subequal in height with first lower premolar (p1) (except in UFMT 3719, 3718, 3966; MZUSP: AS 30; MPEG: MAR 222, 428, 485, 1294; in which c1 is slightly higher than p1); m2 paraconid usually higher than the entoconid of m1 (70%, n=70); and talonid of the m4 usually tricuspid (83%, n=70; except in UFPA-M 382, 429; MNRJ 75117, 75121, 75122, 75139; UFMT 765; MPEG 40378, 40380; MPEG: CAX 293, MAR 589, PEB 12).

Geographic variation. Specimens of M. woodalli  from the Cerrado biome (states of Maranhão and Tocantins) exhibit lighter dorsal fur (reddish brown) than specimens from forested areas (dark brown). In addition, specimens from the right margin of the Tocantins River have larger body size ( HBL = 110.1 ±17.8 mm) than those from the left bank ( HBL = 102.8±17.6 mm), and Student´s t tests showed that females from the right margin exhibit larger CBL, PL, MTR, UMS, WM4, BRC, BRJ, LMS, Lm4, and smaller TBO, while males exhibit larger PL, MTR, UMS, PPB, WET, POC, LMS, and Lm4 ( Table S5).

Comparisons with M. parvidens  and other species of the “Parvidens” group ( Table 6). Comparisons between M. woodalli  , M. marina  and M. pinheiroi  (s.s.) are provided above. Marmosops woodalli  can be discriminated from M. parvidens  by exhibiting dark brown dorsal coloration (versus slightly reddish brown); white (versus cream) ventral fur; lateral bands of gray-based hairs on the venter narrow and irregularly arranged, joining or not on the throat and/or mid-chest (versus usually absent, never joining together; Figure 4A and DView FIGURE 4); rounded supraoc-cipital ( Figure 9AView FIGURE 9), due to its markedly convex shape in dorsal view (versus slightly convex); tympanic process of the alisphenoid with ventral surface oval or globose (versus usually globose); posterior portion of the stylar shelf of the M3 more labially projected than the anterior portion (versus anterior and posterior portions equally projected labially); preprotocrista and anterolabial cingulum separated, not forming a continuous shelf on the anterior margin of crown of the upper molars (versus united, forming a continuous shelf on the anterior margin of crown the upper molars; Figures 7View FIGURE 7 B-C); and small accessory cusp between the metaconid and the entoconid of lower molars absent ( Figure 8View FIGURE 8 A-B).

Habitats and sympatry. Marmosops woodalli  is geographically distributed in the Babaçu Forests of Maranhão, Xingu/Tocantins-Araguaia Humid Forests, Tocantins-Araguaia/ Maranhão Humid Forests, Marajó Várzea Forests, and Tropical Dry Forests ecoregions (sensu Olson et al. 2001). One specimen collected in Itapecuru Mirim, state of Maranhão, Brazil ( MPEG 45528), was associated to disturbed forest (secondary vegetation) according to its tag information. There is no record of sympatry between M. woodalli  and other Marmosops  species.

Natural history data. Mammary formula 4–1–4 = 9. Pregnant females were recorded in October, in Primavera, state of Pará, Brazil. In this locality, M. Aragona captured four specimens in live-traps (Sherman), three of which set on the ground (three individuals – UFMT 3975, 3978, and UFMT: TC 189) and one in the understory ( UFMT 3966); two other individuals were captured in pitfall-traps.

Specimens examined (n=165). BRAZIL - Maranhão: Bacabeira , 3°0’S, 44°19’W, 1 F, 1 M ( UFPA-M 966, 980)GoogleMaps  ; Ferrovia Norte Sul , 5°35’S, 47°26’W, 1 M ( MZUSP: AS 30)GoogleMaps  ; Itapecuru Mirim , 3°24’S, 44°21’W, 1 M ( MPEG 45528View Materials)GoogleMaps  ; Miranda do Norte , 3°31’38”S, 44°30’46”W, 1 M ( UFPA: EFC 08-03)GoogleMaps  . Pará: Barcarena , 1°30’S, 48°37’W, 12 M, 2 F ( UFPA-M 345, 368, 369, 371-374, 376, 377, 379, 380, 381, 382, 384)GoogleMaps  ; Belém, Agropalma , 1°19’S, 48°28’W, 4 F, 2 M ( MPEG: AGPM 06, 11View Materials, 33View Materials, 38View Materials, 109View Materials, 152View Materials)GoogleMaps  ; Canaã dos Carajás , 6°32’S, 49°51’W, 1 M ( MZUSP: CA 20)GoogleMaps  ; Caxiuanã , 1°55’S, 51°22’W, 9 M, 3 F, 4? ( MPEG 40167View Materials, 40169View Materials, 40171View Materials, 40172View Materials, 40298View Materials; MPEG: MAR 222View Materials, 428View Materials, 589View Materials, 683View Materials, 1294View Materials; CAX 098, 186, 209, 293, 360, 407)GoogleMaps  ; Estrada de Ferro Carajás , 6°16’S, 50°34’W, 7 M (UFPA-M 423, 426, 429, 458, 459, 487, 521)GoogleMaps  ; Chaves, Fazenda Tauari, Ilha de Marajó , 0°39’S, 50°11’W, 5 M, 2 F ( MPEG 40388View Materials, 40389View Materials, 40390View Materials ou 40392 (double), 40391, 40393, 40394, 40395)GoogleMaps  ; Linha de Transmissão do Tucurui-Xingu (Jurupari), 3°42’0”S, 49°41’59”W, 2 M, 1 F ( MZUSP: LTBM 02, 09View Materials; LTC 24)GoogleMaps  ; Marabá , 5 M, 3 F ( UFPA-M 257, 347, 355, 356, 358, 382, 1824, 1907)  ; Marabá, Flona Tapirapé , 5°49’0”S, 50°30’60”W, 3 F, 7 M, 7? ( MPEG 40174- 40179View Materials, 40181View Materials, 40183View Materials; MPEG: PSA 065View Materials, 087View Materials, 154View Materials; UFMT 1241, 1245, 1247, 1251, 1252, 1258)GoogleMaps  ; Melgaço, Estação Científica Ferreira Penna , 1°41’33”S, 50°28’43”W, 5 M, 4 F, 4? ( MPEG 40375-40378View Materials, 40380View Materials, 40381-40384View Materials, 40385- 40387View Materials; MPEG: EPM 095)GoogleMaps  ; Parauapebas , 6°4’S, 49°54’W, 1 M ( MPEG 38941View Materials)GoogleMaps  ; Peixe-boi , 01º05’53”S 47º19’54”W, 2 F, 1 M ( MPEG: PEB 06, 12View Materials, 25View Materials)GoogleMaps  ; Primavera , 0°57’S, 47°6’W, 7 M, 6 F, 2? ( UFMT 765, 3703, 3704, 3716, 3718, 3719, 3964, 3966, 3975, 3977-3979, 3981; UFMT: TC 178, 189)GoogleMaps  ; São Felix do Xingu , 7°1’S, 52°21’W, 5 M, 3 F ( MPEG 42460View Materials, 42721View Materials, 42723View Materials, 42725View Materials, 42726View Materials, 42728View Materials, 42730View Materials, 42793View Materials)GoogleMaps  ; Santa Barbara , 1°12’26”S, 48°16’14”W, 6 M, 1 F ( MPEG: SBER 01, 02View Materials, 07View Materials, 11View Materials, 15View Materials, 17View Materials, 32View Materials)GoogleMaps  ; São Geraldo do Araguaia 6°23’S, 48°33’W, 2 M ( MNRJ 75242View Materials, 75244View Materials)GoogleMaps  ; Senador José Porfírio , 3°51’S, 51°51’W, 6 M ( MPEG 41851View Materials, 41862View Materials, 42447View Materials, 42458View Materials, 42459View Materials, 42460View Materials)GoogleMaps  ; Tucu-ruí, 3°42’S, 49°42’W, 1 F, 1 M ( MPEG 12296View Materials, 12297View Materials)GoogleMaps  ; Nova Área Experimental, Utinga, Belém , 1º27’S, 48º29’W, 1 F ( USNM 393532View Materials, photograph of the holotype)GoogleMaps  ; Utinga, Parque Ambiental de Belém , 1°25’33”S, 48°26’39”W, 6 M, 9 F, 1? ( MPEG 8787View Materials, 12701View Materials, 12960View Materials, 15257View Materials, 38654View Materials, 38657View Materials, 38658View Materials, 38666View Materials, 38667View Materials, 38669View Materials, 38671View Materials, 39695View Materials, 39697View Materials, 39698View Materials, 39706View Materials; MPEG: PAB 017)GoogleMaps  ; Viseu , 1°10’58”S, 46°17’32”W, 1 M ( MPEG: VIS 45)GoogleMaps  . Tocantins: Goiatins , 7°47’53”S, 47°16’40”W, 2 M, 1 F ( MNRJ 75121View Materials, 75122View Materials, 75136View Materials)GoogleMaps  ; Ribeiro Gonçalves , 7°47’48”S, 47°16’47”W, 1 M, 2 F ( MNRJ 75117View Materials, 75139View Materials, 75140View Materials)GoogleMaps  .

Others specimens examined: Marmosops parvidens  (n=34). BRASIL - Amazonas: Balbina , 1º53’S 59º28’W, 2 F ( MZUSP 22940View Materials; MPEG 22141View Materials)GoogleMaps  ; Urucará , 2º23’S, 57º38’W, 2 M ( MPEG 40065View Materials, 40068View Materials)GoogleMaps  . Pará: Floresta Estadual Faro (Flota Faro), left bank of Rio Nhamundá , 1°16’44”S, 58°2’24”W, 2 F, 4 M, 1? ( MPEG 39959View Materials, 39963View Materials, 30075View Materials, 39976View Materials, 39982View Materials, 39984View Materials; MPEG: CN 080)GoogleMaps  ; Óbidos, Flota Trombetas, 0°58’S, 55°31’W, 3 M, 4? ( MPEG 40401View Materials, 40403View Materials, 40404View Materials; MPEG: CN 182, 186View Materials, 207View Materials, 210View Materials)GoogleMaps  ; Oriximiná, Porto Trombetas , 1º49’S 56º30’W, 6 M, 6 F ( MPEG 39802View Materials, 39807View Materials, 40070View Materials, 40074View Materials, 42404View Materials, 42422View Materials, 42364View Materials, 42372View Materials, 42405View Materials, 42424View Materials, 42437View Materials, 42441View Materials)GoogleMaps  ; Terra Santa , 2°6’S, 56°29’W, 2 M, 1 F ( MPEG 40081-40083View Materials)GoogleMaps  . GUYNA: “Hyde Park, 30 miles up the Demarara River,” Demerara-Mahaica ( FMNH 18545View Materials, photograph of the holotype)  .


Universidade Federal de Mato Grosso


Museu Paraense Emilio Goeldi


Museu de Zoologia da Universidade de Sao Paulo


Grasslands Rhizobium Collection


Museu Nacional/Universidade Federal de Rio de Janeiro


Západoceské muzeum v Plzni


Universiti Malaysia Sabah


Botanical Record Club


Carolina Biological Supply Company


Wartburg College














Marmosops (Sciophanes) woodalli ( Pine, 1981 )

Ferreira, Claudilívia, Oliveira, Ana Cristina Mendes De, Lima-Silva, Luan Gabriel & Rossi, Rogério Vieira 2020

Marmosops pinheiroi:

Voss, R. S. & Lunde, D. P. & Simmons, N. B. 2001: 49

Marmosa parvidens woodalli

Pine, R. H. 1981: 62