154.

Spotted Butterfly Bat

Glauconycteris humeralis

French: Glauconyctere tacheté / German: Gefleckte Schmetterlingsfledermaus / Spanish: Glauconicterio manchado

Other common names: Allen's Spotted Bat

Taxonomy. Glauconycteris humeralis]. A. Allen, 1917,

“Medje [Haut-Uele Province], Belgian Congo [= DR Congo].”

Form hwmeralis has been treated as a species and a subspecies of G. beatrix . Here it is treated as distinct from G. beatrix, pending revision ofits taxonomic status. A. Hassanin and colleagues in 2018 retrieved G. humeralis as possibly polyphyletic, with partsister to a clade including G. atra, G. cf. humeralis, and G. cf. beatrix . Monotypic.

Distribution. Confirmed records from DR Congo, Uganda, and Tanzania; it might occur in Kenya.

Descriptive notes. Head-body ¢.39-45 mm, tail 37-59 mm, ear 6-12 mm, forearm 35-41 mm; weight 4-7 g. Pelage ofthe Spotted Butterfly Bat is dense. Dorsal and ventral fur is dark sepia-brown, with white shoulder spot. Ears are yellowish brown, very rounded, separate, and short for a vespertilionid but medium-short for a Glauconycteris . Inner margin has rounded lobe at base, and outer margin is connected with well-developed fleshy lobe on lowerlip near corner of mouth. Tragusis short and broad, with straight anterior margin and convex posterior margin. Wings and uropatagium are dark brown and not reticulated. Wing bones are pale brown on both sides. Tibia is of medium length (16-20 mm) for Glauconycteris . Basal part of baculum is not expanded and unilobed, and distal part is lengthened to a short shaft. Head is high-domed, and muzzle is short, broad, and flattish. Skull is small, and profile of forehead is moderately concave compared with other Glauconycteris . I* is strongly bicuspid, with secondary cusp equal in size or slightly smaller. Lower incisors are tricuspid or with four cusps and not crowded.

Habitat. Rainforests.

Food and Feeding. No information.

Breeding. A pregnant Spotted Butterfly Bat was recorded in February in Avakubi, north-eastern DR Congo.

Activity patterns. No information.

Movements, Home range and Social organization. No information.

Status and Conservation. Classified as Data Deficient on The IUCN Red List. Possible threats include deforestation for logging, mining activities, and agriculture.

Bibliography. Eger & Schlitter (2001), Happold, M. (2013ay), Hassanin et al. (2018), Hayman & Hill (1971), Hayman et al. (1966), Koopman (1971a, 1993), Peterson & Smith (1973).