<documentID-CLB-Dataset="86636"ID-DOI="http://dx.doi.org/10.3897/vz.72.e80019"ID-GBIF-Dataset="574d4a22-42bb-4f6c-8e2d-6d49f9a2766d"ID-Pensoft-Pub="2625-8498-72-495"ID-Pensoft-UUID="218D013821E75A06B266110EB2A38790"ID-ZooBank="0B2305D45FE6489CAE3647BC0D25147B"ModsDocID="2625-8498-72-495"checkinTime="1656747396186"checkinUser="pensoft"docAuthor="Lyu, Zhi-Tong, Wang, Jian, Zeng, Zhao-Chi, Luo, Lin, Zhang, Yan-Wu, Guo, Chun-Peng, Ren, Jin-Long, Qi, Shuo, Mo, Yun-Ming & Wang, Ying-Yong"docDate="2022"docId="BFD1E4E6F78259D29A9F27662F224A79"docLanguage="en"docName="VertZool 72: 495-512"docOrigin="Vertebrate Zoology 72"docPubDate="2022-07-01"docSource="http://dx.doi.org/10.3897/vz.72.e80019"docTitle="Occidozyga obscura Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang 2022, comb. nov."docType="treatment"docVersion="5"id="218D013821E75A06B266110EB2A38790"lastPageNumber="495"masterDocId="218D013821E75A06B266110EB2A38790"masterDocTitle="Taxonomic clarifications on the floating frogs (Anura: Dicroglossidae: Occidozyga sensu lato) in southeastern China"masterLastPageNumber="512"masterPageNumber="495"pageNumber="495"updateTime="1732809209568"updateUser="ExternalLinkService">
<mods:titleid="6ACE3AE44A28AC28BC13CF4B85E499E0">Taxonomic clarifications on the floating frogs (Anura: Dicroglossidae: Occidozyga sensu lato) in southeastern China</mods:title>
<mods:affiliationid="BE96E405419FDCC3B3857D74624FFD05">State Key Laboratory of Biocontrol / The Museum of Biology, School of Life Sciences / School of Ecology, Sun Yat-sen University, Guangzhou 510275, PR China</mods:affiliation>
<mods:affiliationid="39C7E7E618AD7CD3C7A2DB483B815177">State Key Laboratory of Biocontrol / The Museum of Biology, School of Life Sciences / School of Ecology, Sun Yat-sen University, Guangzhou 510275, PR China</mods:affiliation>
<mods:affiliationid="1AD57A9F7D0F3181409F6DA1136CEAF3">State Key Laboratory of Biocontrol / The Museum of Biology, School of Life Sciences / School of Ecology, Sun Yat-sen University, Guangzhou 510275, PR China</mods:affiliation>
<mods:affiliationid="F2D45FB884D306EFD06D8633796E2842">Shenzhen Administrative Bureau for Wildlife and Forest Plants Protection, Shenzhen 518048, PR China</mods:affiliation>
<mods:affiliationid="6060EFFC678715EB7CE4C6F5C9FCE344">Shenzhen Administrative Bureau for Wildlife and Forest Plants Protection, Shenzhen 518048, PR China</mods:affiliation>
<mods:affiliationid="3058744C1BBC39420949D0B8E47B6264">Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China</mods:affiliation>
<mods:affiliationid="06B2179F225813CC47BB32124F99EE42">Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China</mods:affiliation>
<mods:affiliationid="C52B6A7F29ACF7BD8155F06EE071902C">State Key Laboratory of Biocontrol / The Museum of Biology, School of Life Sciences / School of Ecology, Sun Yat-sen University, Guangzhou 510275, PR China</mods:affiliation>
<mods:affiliationid="8452A699EDE21F716E5D4BA1A0742FBF">State Key Laboratory of Biocontrol / The Museum of Biology, School of Life Sciences / School of Ecology, Sun Yat-sen University, Guangzhou 510275, PR China</mods:affiliation>
<taxonomicNameid="BB77A324BF1D5A3750B23BE74FC7EEE3"ID-CoL="3MQZP"LSID="BFD1E4E6-F782-59D2-9A9F-27662F224A79"authority="(Gray, 1831)"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Gray"baseAuthorityYear="1831"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura"status="comb. nov.">Occidozyga obscura (Gray, 1831)</taxonomicName>
<taxonomicNameid="905648BB1D97B66E3CB02C5691BE2B79"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"baseAuthorityYear="2022"class="Amphibia"family="Dicroglossidae"genus="Houlema"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Houlema obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura"status="comb. nov.">Houlema obscura</taxonomicName>
<bibRefCitationid="207B66FFD1DAE91214069BBFDB27A22D"author="Gray, JE"journalOrPublisher="Archiv fuer Naturgeschichte"pageId="0"pageNumber="495"refId="B20"refString="Gray, JE, 1831. Description of two new genera of frogs discovered by John Reeves, Esq. in China. Zoological Miscellany, Part 1: 38."title="Description of two new genera of frogs discovered by John Reeves, Esq. in China. Zoological Miscellany, Part 1: 38."year="1831">Gray 1831</bibRefCitation>
<taxonomicNameid="DBD5F4E06559D82B67D764B8293B63FA"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"baseAuthorityYear="2022"class="Amphibia"family="Dicroglossidae"genus="Oxyglossa"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Oxyglossa lima subsp. var. var. chinens"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="variety"species="lima"status="comb. nov."subSpecies="var."variety="chinens">Oxyglossa lima var. chinens</taxonomicName>
<bibRefCitationid="EFC44B5F7FDA3498D45702738E220B85"author="Mueller, F"journalOrPublisher="Verhandlungen der Naturforschenden Gesellschaft in Basel"pageId="0"pageNumber="495"pagination="560 - 709"refId="B35"refString="Mueller, F, 1878. Katalog der im Museum und Universitaetskabinat zu Basel aufgestellten Amphibien und Reptilien nebst Anmerkungen. Verhandlungen der Naturforschenden Gesellschaft in Basel 6: 560 - 709"title="Katalog der im Museum und Universitaetskabinat zu Basel aufgestellten Amphibien und Reptilien nebst Anmerkungen."volume="6"year="1878">
<taxonomicNameid="B662AD46BF151ECED22E6681C814E1F4"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"class="Amphibia"family="Dicroglossidae"genus="Oxydozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Oxydozyga lima"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="lima"status="comb. nov.">Oxydozyga lima</taxonomicName>
<bibRefCitationid="B34BB723C32C1CF0F02EF3AFC57CE1AA"author="Stejneger, L"journalOrPublisher="Proceedings of the United States National Museum"pageId="0"pageNumber="495"pagination="1 - 115"refId="B46"refString="Stejneger, L, 1925. Chinese amphibians and reptiles in the United States National Museum. Proceedings of the United States National Museum 66: 1 - 115"title="Chinese amphibians and reptiles in the United States National Museum."volume="66"year="1925">Stejneger 1925</bibRefCitation>
<taxonomicNameid="B5158B7DD08209BB3DADDEEE718A2FCA"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"baseAuthorityYear="2022"class="Amphibia"family="Dicroglossidae"genus="Osteosternum"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Osteosternum amoyense"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="amoyense"status="comb. nov.">Osteosternum amoyense</taxonomicName>
<bibRefCitationid="BA324C3AD44AEE89E0C196A5A4531A1B"author="Wu, HW"journalOrPublisher="Contributions from the Biological Laboratory of the Science Society of China"pageId="0"pageNumber="495"pagination="1 - 9"refId="B52"refString="Wu, HW, 1929. Osteosternum amoyense, a new frog from Amoy. Contributions from the Biological Laboratory of the Science Society of China 5: 1 - 9"title="Osteosternum amoyense, a new frog from Amoy."volume="5"year="1929">Wu 1929</bibRefCitation>
<taxonomicNameid="2C7B6FAADA3E3FAAA91E1A361C9DDC64"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"class="Amphibia"family="Dicroglossidae"genus="Ooeidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Ooeidozyga lima"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="lima"status="comb. nov.">Ooeidozyga lima</taxonomicName>
<bibRefCitationid="35CFC49BA6806F8AC0E0AA6A5A5DE7BB"author="Pope, CH"journalOrPublisher="Bulletin of the American Museum of Natural History"pageId="0"pageNumber="495"pagination="397 - 611"refId="B38"refString="Pope, CH, 1931. Notes on amphibians from Fukien, Hainan and other parts of China. Bulletin of the American Museum of Natural History 61: 397 - 611"title="Notes on amphibians from Fukien, Hainan and other parts of China."volume="61"year="1931">Pope 1931</bibRefCitation>
<bibRefCitationid="DEE8D004BAA52EF61058BEA8FF1BC2F6"author="Smith, MA"journalOrPublisher="Bulletin of the Raffles Museum"pageId="0"pageNumber="495"pagination="3 - 32"refId="B45"refString="Smith, MA, 1931. The herpetology of Mt. Kinabalu, North Borneo, 13,455 ft. Bulletin of the Raffles Museum 5: 3 - 32"title="The herpetology of Mt. Kinabalu, North Borneo, 13,455 ft."volume="5"year="1931">Smith 1931</bibRefCitation>
<taxonomicNameid="79AE637B7BD8979FE1E8B159A9C0FC3C"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"baseAuthorityYear="2022"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga lima"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="lima"status="comb. nov.">Occidozyga lima</taxonomicName>
<bibRefCitationid="6993057F4E7D133FF1F2B7304EBDA72D"author="Dubois, A"journalOrPublisher="Monitore Zoologico Italiano, Nuova Serie, Supplemento"pageId="0"pageNumber="495"pagination="225 - 284"refId="B7"refString="Dubois, A, 1981. Liste des genres et sous-genres nominaux de Ranoidea (Amphibiens Anoures) du monde, avec identification de leurs especes types; consequences nomenclaturales. Monitore Zoologico Italiano, Nuova Serie, Supplemento 15: 225 - 284"title="Liste des genres et sous-genres nominaux de Ranoidea (Amphibiens Anoures) du monde, avec identification de leurs especes types; consequences nomenclaturales."volume="15"year="1981">Dubois 1981</bibRefCitation>
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<bibRefCitationid="DAE3F9D277996EBE112D7F8E5A3032CC"author="Fei, L"journalOrPublisher="Herpetologica Sinica"pageId="0"pageNumber="495"refId="B14"refString="Fei, L, Ye, CY, Jiang, JP, 2012. Colored Atlas of Chinese Amphibians and Their Distributions. Sichuan Publishing House of Science & Technology, Chengdu, China."title="Colored Atlas of Chinese Amphibians and Their Distributions. Sichuan Publishing House of Science & Technology, Chengdu, China."year="2012">2012</bibRefCitation>
<paragraphid="1D0DB269ECA96F29A6BF9D045ADB5212"pageId="0"pageNumber="495">(1) Body stocky, size small, SVL 24.2-27.5 mm in adult males (n=7) and 31.5-32.2 mm in adult females (n=3); (2) snout short triangular shaped; (3) nostrils located dorsally; (4) eye orientation vertically; (5) loreal region oblique, not concave or convex; (6) interorbital space narrower than internarial distance; (7) tongue narrow and slender, unnotched, pointed distally, lingual papilla absent; (8) vomerine ridge and vomerine teeth absent; (9) supratympanic fold distinct, raised, and granulated, curved on the temporal region; (10) tympanum hidden, edge invisible; (11) fingers with rudimentary webs, toes with full webs; (12) heels not meeting, tibio-tarsal articulation reaching between the posterior and anterior of the eye.</paragraph>
<taxonomicNameid="5AF93032BCC7CA5778665B528288C49B"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Gray"baseAuthorityYear="1831"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura">
<taxonomicNameid="465076EC0ECB2802EF13CF6C822DE155"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Gray"baseAuthorityYear="1831"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura">
comb. nov. can be distinguished by the combination of the following characteristics: loreal region oblique, not concave or convex (vs. slightly concave in
), interorbital space narrower than internarial distance (vs. subequal), supratympanic fold distinct, raised, and granulated (vs. indistinct), inner metatarsal tubercle large and raised (vs. weakly projecting), and tibio-tarsal articulation reaching between the posterior and anterior of the eye (vs. reaching tip of nostril).
<taxonomicNameid="0F3CCB9B722F74D30247F44D4FC780F4"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Gray"baseAuthorityYear="1831"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura">
by the supratympanic fold curved on the temporal region (vs. straight), fingers with rudimentary webs (vs. unwebbed), and outer metatarsal tubercle present (vs. absent).
<taxonomicNameid="D8936A970D36A80845C4131D4E5622AF"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Gray"baseAuthorityYear="1831"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura">
<tableCitationid="30596BC89C2D0141A66C10EB4FFDB54D"captionStart="Table 3"captionStartId="T3"captionText="Table 3. Measurements (in mm) of the examined specimens of Occidozyga obscura comb. nov."httpUri="http://table.plazi.org/id/C547C9E22A55445AFAD5613EC2764DE1"pageId="0"pageNumber="495"tableUuid="C547C9E22A55445AFAD5613EC2764DE1">3</tableCitation>
<paragraphid="011F2B298ACC94432404440205F277D7"pageId="0"pageNumber="495">Body stocky, small-sized, SVL 24.2-27.5 mm (n=7) in males and 31.5-32.2 mm (n=3) in females. Head flat above, almost as wide as long (HDW/HDL 0.97-1.09, n=10); pineal ocellus absent; snout short triangular shaped, distinctly protruding beyond lower jaw, tip of snout rounded in dorsal view and profile; canthus rostralis absent, loreal region oblique, not concave or convex; nostril rounded, located dorsally, distinctly raised, closer to the tip of snout than to the eye; eye orientation vertically, pupil diamond shaped; interorbital space narrower than internarial distance; tympanum hidden, edge invisible; vomerine ridge and teeth absent; tongue narrow and slender, unnotched, pointed distally, lingual papilla absent.</paragraph>
<taxonomicNameid="E37447243B7C4D9285B77AA48626C838"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Gray"baseAuthorityYear="1831"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura">
<paragraphid="40AE5FE3BF55E56A3E30FA587EDDED7D"pageId="0"pageNumber="495">Forelimbs short, lower arm 13-18% (n=10) of SVL and hand 26-32% (n=10) of SVL; fingers distinctly thin and long, relative finger lengths I<II<IV<III; tips of fingers pointed, not dilated, and without disks; distinct lateral fringes on inner and outer sides of each finger, fingers with rudimentary webs, more distinct between fingers I and II; subarticular tubercles present at the bases of each finger, prominent and rounded; supernumerary tubercles absent; inner and outer palmar tubercles prominent and rounded.</paragraph>
<paragraphid="377259FF4C247ACC540EFDDD22676AE8"pageId="0"pageNumber="495">Hind limbs robust, tibia 41-47% (n=8) of SVL and foot 66-80% (n=8) of SVL; heels not meeting when hind limbs flexed at right angles to the axis of the body; tibio-tarsal articulation reaching between the posterior and anterior of the eye when hind limb is stretched along the side of the body; toes distinctly long and thin, relative lengths I<II<III<V<IV; tips of toes pointed, dilated into pear-shaped disks; toes with full webs, metatarsal web present, distinct lateral fringes on lateral edges of toes I and V; subarticular tubercles rounded, prominent; inner metatarsal tubercle large and long-elliptic, slightly raised, length twice the width; outer metatarsal tubercle relatively smaller than the inner metatarsal tubercle, distinctly raised and pointed, length slightly larger than width; inner tarsal fold relatively flat, in contact with the inner metatarsal tubercle; tarsal tubercle large and distinctly raised, close to the tibio-tarsal articulation.</paragraph>
<paragraphid="173343BDB72D28204C2E1A293E7637CF"pageId="0"pageNumber="495">Dorsal surface relatively rough, transverse wrinkles and dense tubercles on the dorsum, head, flanks, and limbs; small granules on the dorsal rears of hands and tarsi; not bearing spinules on the dorsal skin; supratympanic fold distinct, raised and granulated, extending from the posterior corner of the eye, curved on the temporal region, to the previous shoulder; dorsolateral fold absent. Ventral surface with large flattened tubercles, denser on the throat and thighs; dense granules on the ventral feet and tarsi.</paragraph>
<figureCitationid="BCFA59F73DC241B36EDE6E3DDDBEF8B8"captionStart="Figure 3"captionStartId="F3"captionText="Figure 3. Morphological features of Occidozyga obscura comb. nov. in life. A - D dorsolateral view, ventral view, left hand, and right foot of SYS a 008122 E dorsolateral view of SYS a 008123 F dorsolateral view of an uncaptured individual in situ from Shimentai Nature Reserve."figureDoi="10.3897/vz.72.e80019.figure3"httpUri="https://binary.pensoft.net/fig/709316"pageId="0"pageNumber="495">3</figureCitation>
), dorsal surfaces vary from olive brown to dark brown; dorsum and flanks interspersed with irregular black speckles; mid-dorsal stripe grass-green with distinct border; lateral line system grayish brown to yellowish brown. Pupil bordered with yellow, iris beige to brown. Supratympanic fold olive-brown to dark brown. Skin of throat, chest, and belly uniform creamy white; gular with a pair of distinct or indistinct longitudinal dark stripes; skin of limbs dark gray, tubercles on ventral thighs and tibias creamy white.
<figureCitationid="B60AD6D7AAB7B2912EDBF672A9537495"captionStart="Figure 4"captionStartId="F4"captionText="Figure 4. Morphological features of Occidozyga obscura comb. nov. and Occidozyga lingnanica sp. nov. in preservative. Occidozyga obscura comb. nov.: A adult male SYS a 008121 B adult female SYS a 008122; Occidozyga lingnanica sp. nov.: C adult male paratype SYS a 007373 D adult female paratype SYS a 007375. 1 dorsal view 2 ventral view."figureDoi="10.3897/vz.72.e80019.figure4"httpUri="https://binary.pensoft.net/fig/709317"pageId="0"pageNumber="495">4A, B</figureCitation>
), dorsum light gray; black speckles on dorsal surface light brown; mid-dorsal stripe fainted and the border indistinct; ventral skin grayish white; tubercles on ventral surface more distinct.
<taxonomicNameid="768C687ABFF67906605807BBB8DCB00D"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Gray"baseAuthorityYear="1831"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura">
<taxonomicNameid="CCD178C0A328AF8081940DDD60778A67"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Gray"baseAuthorityYear="1831"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura">
<taxonomicNameid="4CDB208ECFD0C288AA34EE850D92F197"authorityName="Lyu & Wang"authorityYear="2022"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga lingnanica"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="lingnanica">
<taxonomicNameid="DFBE167973EB08F5DBC3FBB233340CCB"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Gray"baseAuthorityYear="1831"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura">
<taxonomicNameid="18F02CB190348107F2C047FC912B6236"authorityName="Lyu & Wang"authorityYear="2022"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga lingnanica"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="lingnanica">
Male with a single subgular vocal sac; in breeding season, a single, light grey nuptial pad on the dorsal surface of finger I, nuptial spinules invisible. Males (SVL 24.2-27.5 mm) distinctly smaller than females (SVL 31.5-32.2 mm) (Fig.
<figureCitationid="BFC853022A6F1BA318895B84AD95CC26"captionStart="Figure 4"captionStartId="F4"captionText="Figure 4. Morphological features of Occidozyga obscura comb. nov. and Occidozyga lingnanica sp. nov. in preservative. Occidozyga obscura comb. nov.: A adult male SYS a 008121 B adult female SYS a 008122; Occidozyga lingnanica sp. nov.: C adult male paratype SYS a 007373 D adult female paratype SYS a 007375. 1 dorsal view 2 ventral view."figureDoi="10.3897/vz.72.e80019.figure4"httpUri="https://binary.pensoft.net/fig/709317"pageId="0"pageNumber="495">4A, B</figureCitation>
This frog inhabits natural or artificial ponds and paddy fields in plain areas. They quickly dive underwater after being disturbed during the daytime, while become relatively insensitive at night. Males call in the water surface or waterside grass from dusk to dawn, more active during the rain. The breeding season is from April to August (this study;
<taxonomicNameid="D70298D7480A9306208AE5A5F59EAB8F"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Gray"baseAuthorityYear="1831"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura">
<figureCitationid="40ED322975E95C02B37F51D831D06BAF"captionStart="Figure 1"captionStartId="F1"captionText="Figure 1. Phylogenetic trees of the genus Occidozyga sensu lato based on mitochondrial genes 16 S and CO 1. Bayesian posterior probabilities (BPP) and bootstrap supports (BS) are labeled above and below the nodes respectively. Numbers at the terminal of the lineages correspond to the IDs in Table 1."figureDoi="10.3897/vz.72.e80019.figure1"httpUri="https://binary.pensoft.net/fig/709314"pageId="0"pageNumber="495">1</figureCitation>
<figureCitationid="59C0C2CFF244BC767A8D82D040E47228"captionStart="Figure 2"captionStartId="F2"captionText="Figure 2. Map showing the floating frogs Occidozyga obscura comb. nov., Occidozyga lingnanica sp. nov., and their closest congeners. Numbers correspond to the IDs in Table 1."figureDoi="10.3897/vz.72.e80019.figure2"httpUri="https://binary.pensoft.net/fig/709315"pageId="0"pageNumber="495">2</figureCitation>
, but its population quantity is found rapidly declining due to the influence of human activities such as pesticide abuse and urban construction. The populations in Hong Kong, Macao, Shenzhen, Guangzhou, and Xiamen might disappear, as no more reports and vouchers in nearly 20 years (this study;
<bibRefCitationid="69430276CFDC23C6D8B920ED7D21DC4E"author="Chan, HK"journalOrPublisher="Annals and Magazine of Natural History, Series six"pageId="0"pageNumber="495"refId="B5"refString="Chan, HK, 2013. Phylogeography and cryptic diversity of Occidozyga lima (Gravenhorst 1829). Master dissertation at the University of Hong Kong, Hong Kong, China."title="Phylogeography and cryptic diversity of Occidozyga lima (Gravenhorst 1829). Master dissertation at the University of Hong Kong, Hong Kong, China."year="2013">Chan 2013</bibRefCitation>
<taxonomicNameid="784BBA93672693CFF7847E3C6609E1DB"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Gray"baseAuthorityYear="1831"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura">
<taxonomicNameid="3514461B21FF0FBF2461F8D2FF352B44"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Gray"baseAuthorityYear="1831"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura">
<bibRefCitationid="419836B46EF339BC814BB5787A90E18E"author="Gray, JE"journalOrPublisher="Archiv fuer Naturgeschichte"pageId="0"pageNumber="495"refId="B20"refString="Gray, JE, 1831. Description of two new genera of frogs discovered by John Reeves, Esq. in China. Zoological Miscellany, Part 1: 38."title="Description of two new genera of frogs discovered by John Reeves, Esq. in China. Zoological Miscellany, Part 1: 38."year="1831">Gray 1831</bibRefCitation>
). Zhao & Adler (1993) speculated that the type specimens may be from somewhere in southeastern China, especially Macao or Canton (= Guangzhou) in Pearl River Delta, where John Reeves lived and worked in.
<taxonomicNameid="F62BEC4F43134F16A037A1A5AAB4B394"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"baseAuthorityYear="2022"class="Amphibia"family="Dicroglossidae"genus="Oxyglossa"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Oxyglossa lima subsp. var. var. chinens"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="variety"species="lima"subSpecies="var."variety="chinens">Oxyglossa lima var. chinens</taxonomicName>
<taxonomicNameid="D13C2C9FD70A89951557F6BADDF9FFDF"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"baseAuthorityYear="2022"class="Amphibia"family="Dicroglossidae"genus="Osteosternum"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Osteosternum amoyense"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="amoyense">
<bibRefCitationid="6CC46187A1D4C8EF560A4C50EC49347E"author="Stejneger, L"journalOrPublisher="Proceedings of the United States National Museum"pageId="0"pageNumber="495"pagination="1 - 115"refId="B46"refString="Stejneger, L, 1925. Chinese amphibians and reptiles in the United States National Museum. Proceedings of the United States National Museum 66: 1 - 115"title="Chinese amphibians and reptiles in the United States National Museum."volume="66"year="1925">Stejneger 1925</bibRefCitation>
<bibRefCitationid="8B6A415A784128C589AA5AC9EC092342"author="Smith, MA"journalOrPublisher="Bulletin of the Raffles Museum"pageId="0"pageNumber="495"pagination="3 - 32"refId="B45"refString="Smith, MA, 1931. The herpetology of Mt. Kinabalu, North Borneo, 13,455 ft. Bulletin of the Raffles Museum 5: 3 - 32"title="The herpetology of Mt. Kinabalu, North Borneo, 13,455 ft."volume="5"year="1931">Smith 1931</bibRefCitation>
<bibRefCitationid="BA3EE7A5A519B007456D01E27FE21BC3"author="Pope, CH"journalOrPublisher="Bulletin of the American Museum of Natural History"pageId="0"pageNumber="495"pagination="397 - 611"refId="B38"refString="Pope, CH, 1931. Notes on amphibians from Fukien, Hainan and other parts of China. Bulletin of the American Museum of Natural History 61: 397 - 611"title="Notes on amphibians from Fukien, Hainan and other parts of China."volume="61"year="1931">Pope 1931</bibRefCitation>
<taxonomicNameid="BC9CFFBD59E3304248DB808816ECEFB2"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"baseAuthorityYear="2022"class="Amphibia"family="Dicroglossidae"genus="Oxyglossa"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Oxyglossa lima subsp. var. var. chinens"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="variety"species="lima"subSpecies="var."variety="chinens">Oxyglossa lima var. chinens</taxonomicName>
<taxonomicNameid="573687C54D464AEF1F51C5154DFF966E"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"baseAuthorityYear="2022"class="Amphibia"family="Dicroglossidae"genus="Osteosternum"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Osteosternum amoyense"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="amoyense">
is Amoy (= Xiamen, Fujian). During our field surveys, we are unable to observe any frogs that resembled these two historic species from Shenzhen or Xiamen, possibly due to the dramatic urbanization of these two cities. Nevertheless, according to their original descriptions and distributions, we propose to transfer these two taxa to be the synonymy of
<taxonomicNameid="455C0F7E747EA2DAE4755E4F7F481AA5"authorityName="Lyu & Wang & Zeng & Luo & Zhang & Guo & Ren & Qi & Mo & Wang"authorityYear="2022"baseAuthorityName="Gray"baseAuthorityYear="1831"class="Amphibia"family="Dicroglossidae"genus="Occidozyga"higherTaxonomySource="CoL"kingdom="Animalia"lsidName="Occidozyga obscura"order="Anura"pageId="0"pageNumber="495"phylum="Chordata"rank="species"species="obscura">
