Ethelum americanum ( Dollfus, 1896 )

Ocampo-Maceda, Ana Teresa, Ruelas-Cabana, Carlos Miguel, López-Orozco, Carlos Mario & López-Tejeda, Evaristo Luciano, 2022, Catalogue of terrestrial isopods (Isopoda, Oniscidea) from Peru, with new records of Circoniscus ornatus (Scleropactidae) and Ethelum americanum (Eubelidae), Nauplius (e 2022003) 30, pp. 1-12 : 8

22. Ethelum americanum ( Dollfus, 1896)

Fig. 3B

Mesarmadillo americanus Dollfus, 1896: 397–398 , fig. 11.

Material examined. 6♀, 2♂ (MUSA-ENT-ISO 010), Nueva Alianza, Contamana , Loreto, 7°24ʹ49.95ʺS 74°57ʹ43.44ʺW, November2019,leg. A.Ocampo and C. Ruelas ; 14♀, 4♂ (MUSA-ENT-ISO 011), 7°24ʹ37.81ʺS 74°57ʹ42.69ʺW, same data as previous ; 37♀, 22♂, 3 mancas (MUSA-ENT-ISO 012), 7°24ʹ38.52ʺS 74°57ʹ54.92ʺW, same data as previous ; 20♀, 4♂ (MUSA-ENT-ISO 013), 7°24ʹ52.53ʺS 74°58ʹ1.68ʺW, same data as previous ; 15♀, 7♂, 6 mancas (MUSA-ENT-ISO 014), 7°24ʹ47.90ʺS 74°57ʹ52.70ʺW, same data as previous .

Distribution. Lesser Antillas, French Guiana, Guyana, northern Venezuela and Brazil (Pará State: Apeú, Castanhal) ( Schmidt, 2003; Schmalfuss, 2003; Boyko et al., 2008b; Campos-Filho et al., 2018). In Peru it is recorded from the department of Loreto, in the buffer zone of the Cordillera Azul National Park (Nueva Alianza). This work provides the first record of this species for Peru and considerably extends its distribution.

Ecological remarks. The specimens were collected in a floodplain forest at Nueva Alianza, sharing the same microhabitats with C. ornatus except for the marsupial’s skull.

Figures

Figure 3. Habitus in lateral view of: A, Circoniscus ornatus (Verhoeff, 1941); B, Ethelum americanum (Dollfus, 1896).