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Asian
Toads, Litter Frogs: Family Megophryidae
Family:
MEGOPHRYIDAE
Megophryids is the largest and
most diversified family of Old World frogs. These frogs range from
Pakistan, India, extending eastward into southeast Asia, Borneo and
the Philippines to the Sunda Islands. They range in size from about 20
to 125 mm. Some are large, cryptic, forest-floor dwellers with
adaptations to eat large prey. Their skin is modified so that they
resemble dead leaves on the forest floor. Some species have spines on the eyelids, which further enhances the illusion (Megophrys
montana). While others, such as Leptobrachella mjobergi, are
small, with digital discs and are found on rocks along streams. Some
megophryids have pond-type tadpoles; others have stream-dwelling
tadpoles, some are with surface-feeding mouths and some with large buccal
areas for clinging to rocks. All megophryids for which data are
available have unusually ossified intervertebral disks, and hyoid
plates that lack most of the ceratohyals. There are no known fossils.
Boulenger (1920) followed Annandale (1917) to include Rana pleskei
in the amphibian fauna of Kashmir. In 1956 a small frog, SMF 64483,
(snout-vent length 31 mm), collected from a village Lun Bangla (at the
border with Azad Kashmir), was deposited in the Senckenberg Museum,
Frankfurt, Germany (SMF), by late Dr. Ahsanul Islam (Government College,
Natural History Museum, Lahore). Mertens (1969) identified the specimen
as Nanorana pleskei, later Dubois and Khan (1979) referred the
specimen as Rana vicina. However, probably due to priority
Mertens identification was followed by the subsequent authors to include
Nanorana pleskei in fauna of Pakistan (Khan,1980, 2003; Khan and
Tasnim, 1987). In 1978, Dubois (1978) assigned the Azad Kashmir specimen
and the tadpoles collected from Kashmir (Annandale, 1917) to Scutiger nyingchiensis Fei,
1977, family Megophryidae. Sahi and Duda (1986) were confusedly quoted the authority of Dubois (1978) to include Nanorana pleskei
in the fauna of Jammu and Kashmir, rather then Scutiger nyingchiensis
(Cox’s communication, 2004).
N. pleskei is a species of northwestern Yunnan, western
Sichuan, and southeastern Gansu, China (Zhao and Adler, 1993), it does
not range in the northwest, so that Pakistan and India are not included
in its range. All references to N. pleskei from
Pakistan and Kashmir actually pertain to Scutiger nyingchiensis, genus Scutiger replaces Nanorana adding
a new
family Megophyryidae to the amphibian fauna of Pakistan.
Family
Megophryidae is represented in Pakistan by only one species of frog in
genus Scutiger:
Special Note: The information on this page was written
by Dr.
Muhammad Sharif Khan and taken from the AmphibiaWeb
database, University of California at Berkeley. I am extremely grateful to both the author
Dr. Muhammad Sharif Khan and AmphibiaWeb for allowing
me to use the information, under special permission. As
such, all information on this page is the copyright property of Dr.
Muhammad Sharif Khan and AmphibiaWeb and should not be used without the
written permission of the copyright holders.
References
and Credits:
-
The Tree of Life Web Project (ToL) (http://tolweb.org)
-
Written
by M. S. Khan ([email protected]), Herp Lab, Rabwah, Pakistan
-
AmphibiaWeb
database, University of California at Berkeley
( http://elib.cs.berkeley.edu/aw/index.html
)
-
Nausherwan
Ahmed
©1997-200 5
Wildlife of Pakistan-All Rights Reserved. Updated May 8th, 2005 |