Enchisthenes hartii (Thomas, 1892)

Velazco, Paúl M., Voss, Robert S., Fleck, David W. & Simmons, Nancy B., 2021, Mammalian Diversity And Matses Ethnomammalogy In Amazonian Peru Part 4: Bats, Bulletin of the American Museum of Natural History 2021 (451), pp. 1-201 : 104-105

Enchisthenes hartii (Thomas, 1892)

VOUCHER MATERIAL (TOTAL = 1): Jenaro Herrera (MUSM 6966); see table 44 for measurements.

UNVOUCHERED OBSERVATIONS: Enchisthenes hartii was captured and identified at Quebrada Buenavista (one individual) and Quebrada Limera (two individuals) during the Yavarí Rapid Biological Inventory (Escobedo, 2003).

IDENTIFICATION: Enchisthenes contains a single species that is widespread from northcentral Mexico to southern Bolivia and eastern Venezuela; there is also an extralimital record from Arizona in the United States, although this individual may have been accidentally imported (Irwin and Baker, 1967; Arroyo- Cabrales and Owen, 1996, 1997; Simmons, 2005; Marques-Aguiar, 2008b). Enchisthenes hartii can be distinguished from other stenodermatines by the combination of the following characteristics: small size (forearm 36–42 mm); dark chocolate-brown dorsal fur and paler ventral fur; noseleaf about as long as wide; lower margin of noseleaf horseshoe merged with the upper lip; uropatagium narrow, with a hairy outer edge; inner upper incisors pointed (not bifid); M1 with a slightly to moderately developed hypocone; and M3 relatively large and aligned directly behind M2 (Arroyo-Cabrales and Owen, 1996, 1997; Marques-Aguiar, 2008b; López-Baucells et al., 2018). Descriptions and measurements of E. hartii were provided by Gardner (1976), Swanepoel and Genoways (1979), Ascorra et al. (1993), Arroyo-Cabrales and Owen (1996, 1997), Cervantes et al. (2004), and Marques-Aguiar (2008b). No subspecies are currently recognized (Arroyo-Cabrales and Owen, 1996; Marques-Aguiar, 2008b).

TABLE 44

External and Craniodental Measurements (mm) and Weights (g) of Enchisthenes hartii

and Mesophylla macconnelli from the Yavarí-Ucayali Interfluve

Ascorra et al. (1993) identified the specimen from Jenaro Herrera as Artibeus hartii (the binomen by which this species was previously known). That unique specimen conforms to previous descriptions of Enchisthenes hartii , with measurements that fall within the previously documented range of intraspecific size variation.

REMARKS: According to Escobedo (2003), the captures of Enchisthenes hartii from Quebrada Buenavista and Quebrada Limera were made in seasonally flooded forest, and at least one individual was mistnetted 10 m above the ground near a fruiting fig ( Ficus insipida ) tree. No other ecological information about this species is currently available from our region.