Pipistrellus anthonyi 
Pipistrellus anthonyi
Species No 134
Date last modified 14/12/2009
Suborder Microchiroptera
Family Vespertilionidae
Genus Pipistrellus
Common name Anthony's Pipistrelle.
Synonmy Pipistrellus anthonyi Tate, 1942: 252; Changyinku, N Burma, 7000ft.

Key characters:

Tail, 41.0 mm.
Forearm, 38.0 mm.
C-M3, 5.3 mm.
 
 
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Similar species:

P. anthonyi has a darker pelage than P. joffrei but is similar in structure. A specimen (BMNH.16.3.26.2) in the Natural History Museum in London referred to P. joffrei is, however, intermediate in colour, being a dark reddish- brown. It is possible, therefore, that anthonyi and joffrei may prove to be conspecific. In this case, joffrei would be the prior name (Bates et al., 2005).


Taxonomic remarks:

P. anthonyi is known only from the holotype, the skull of which is badly damaged. It is evident, though, that the taxon is similar to P. joffrei and that both taxa are related closely to the genus Philetor. The external genitalia of joffrei, however, are not consistent with the extreme condition found in Philetor (Hill, 1966). In P. joffrei, the baculum is thought to be either small or absent (Hill, 1966). Although similar in several cranial characters to Philetor, both anthonyi and joffrei have narrower anterior narial emarginations, a high coronoid process, and a small anterior upper premolar, which usually is absent from Philetor (Hill & Rozendaal, 1989). The generic status of P. anthonyi is discussed by Hill (1966), Koopman (1983), and Hill & Harrison (1987) (see Corbet & Hill, 1992).


Description:

The forearm length of the type specimen, which remains the only materal of P. anthonyi, is 38 mm. The taxon is similar in form to P. joffrei but is very dark brown rather than pale brown. The pelage is smooth and glossy. The thumb is short; the basal phalanx is 3.4 mm. in length and there is a small basal pad (Tate, 1942). In P. joffrei, the fifth digit is reduced in length but Tate (1942) did not indicate whether this was the case in anthonyi. Nothing is known of the baculum of this species (see Bates et al., 2005).

The type specimen has an incomplete braincase but Tate (1942) described the skull as having "an exceptionally wide lachrymal region and even wider spaces across well developed supraorbital tubercles, but narrower muzzle and canine width". Each zygoma has a small descending process, which is 0.5 mm deep and is external to the third upper molar (pm3) (Bates et al., 2005).

The canine has a well defined posterior cusp. The crown area of the first upper incisor (i2) is approximately four times the size of the crown area of the first upper premolar (pm2), which is minute. pm2 is slightly shorter than pm4: both teeth are rather small and are compressed in the toothrow (Bates et al., 2005).


Distribution:

Myanmar: Kachin State: Changyinku (type loc. of anthonyi).


Ecology and behaviour:

P. anthonyi, a Data Deficient species endemic to Myanmar, was collected in March, 1939 at Changyinku, which is a small village lying in a wide, open valley at an elevation of 2,150 m.a.s.l. The valley, which is drained by the headwaters of the Chipwi River, would have been covered originally in deciduous forest but this had been cleared to make way for agriculture and grazing even by 1939. Anthony (1941) indicates that the region was characterised by open, dry, and boggy meadows, bracken, tree rhododendron (Rhododendron delavayi), and some pine forest (Bates et al., 2005).


Measurements (in mm):

External measurements

FA = 38.0 (Tate, 1942)
HB = 55.0 (Tate, 1942)
TAIL = 41.0 (Tate, 1942)
HF = 10.0 c.u (Tate, 1942)

Cranial and dental measurements

C-M3 = 5.3 (Tate, 1942)
M3-M3 = 7.2 (Tate, 1942)
C1-C1 = 5.1 (Tate, 1942)



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