Friday, July 23, 2021

[Paleontology • 2021] Powered Flight in Hatchling Pterosaurs: Evidence from Wing Form and Bone Strength

in Naish, Witton et Martin-Silverstone, 2021. 
llustrations: Mark P. Witton 

Competing views exist on the behaviour and lifestyle of pterosaurs during the earliest phases of life. A ‘flap-early’ model proposes that hatchlings were capable of independent life and flapping flight, a ‘fly-late’ model posits that juveniles were not flight capable until 50% of adult size, and a ‘glide-early’ model requires that young juveniles were flight-capable but only able to glide. We test these models by quantifying the flight abilities of very young juvenile pterosaurs via analysis of wing bone strength, wing loading, wingspan and wing aspect ratios, primarily using data from embryonic and hatchling specimens of Pterodaustro guinazui and Sinopterus dongi. We argue that a young Sinopterus specimen has been mischaracterised as a distinct taxon. The humeri of pterosaur juveniles are similar in bending strength to those of adults and able to withstand launch and flight; wing size and wing aspect ratios of young juveniles are also in keeping with powered flight. We therefore reject the ‘fly-late’ and ‘glide-early’ models. We further show that young juveniles were excellent gliders, albeit not reliant on specialist gliding. The wing forms of very young juveniles differ significantly from larger individuals, meaning that variation in speed, manoeuvrability, take-off angle and so on was present across a species as it matured. Juveniles appear to have been adapted for flight in cluttered environments, in contrast to larger, older individuals. We propose on the basis of these conclusions that pterosaur species occupied distinct niches across ontogeny.

Visual summary of how basic, size-dependent flight parameters (wing loading, wingspan and aspect ratio) could have influenced pterosaur ecology throughout ontogeny. The animals shown here are giant azhdarchids, species which likely had the largest ontogenetic mass differentials of any pterosaurs (see text) and thus potentially the broadest ecological range across their various growth stages. Azhdarchids were primarily terrestrial pterosaurs, which is reflected in this figure, though the environments and points made here are generalised: they do not expressly pertain to any azhdarchid taxon. Ontogenetic niche exploitation may have differed in other environments.

Darren Naish, Mark P. Witton and Elizabeth Martin-Silverstone. 2021. Powered Flight in Hatchling Pterosaurs: Evidence from Wing Form and Bone Strength. Scientific Reports. 11: 13130. DOI: 10.1038/s41598-021-92499-z

Newly-hatched pterosaurs may have been able to fly

[Paleontology • 2021] Osteological Revision of the Holotype of the Middle Jurassic Sauropod Dinosaur Patagosaurus fariasi Bonaparte, 1979 (Sauropoda: Cetiosauridae)

Patagosaurus fariasi Bonaparte, 1979

in Holwerda, Rauhut et Pol, 2021.
Illustration: Joschua Knuppe

Middle Jurassic sauropod taxa are poorly known, due to a stratigraphic bias of localities yielding body fossils. One such locality is Cerro Cóndor North, Cañadón Asfalto Formation, Patagonia, Argentina, dated to latest Early−Middle Jurassic. From this locality, the holotype of Patagosaurus fariasi Bonaparte 1986 is revised. The material consists of the axial skeleton, the pelvic girdle, and the right femur. Patagosaurus is mainly characterised by a combination of features mainly identified on the axial skeleton, including the following: 1) cervical centra with low Elongation Index; 2) high projection of the postzygodiapophyseal lamina; 3) deep anterior pleurocoels that are sometimes compartmentalized in cervicals; 4) high projection of the neural arch and spine in dorsal vertebrae and anterior(most) caudal vertebrae; 5) deep pneumatic foramina in posterior dorsals which connect into an internal pneumatic chamber; and 6) anterior caudal vertebrae with ‘saddle’ shaped neural spines. Diagnostic features on the appendicular skeleton include: 1) a transversely wide and anteroposteriorly short femur; 2) a medial placement of the fourth trochanter on the femur; and 3) an anteroposteriorly elongated ilium with a rounded dorsal rim, with hook-shaped anterior lobe. The characters that are diagnostic for Patagosaurus are discussed, and the osteology of Patagosaurus is compared to that of Early and Middle Jurassic (eu)sauropods from both Laurasia and Gondwana.

KEYWORDS: Sauropoda, Eusauropoda, Patagosaurus, Gondwana, Middle Jurassic, Patagonia, pneumaticity

Femke M. Holwerda, Oliver W. M. Rauhut and Diego Pol. 2021. Osteological Revision of the Holotype of the Middle Jurassic Sauropod Dinosaur Patagosaurus fariasi Bonaparte, 1979 (Sauropoda: Cetiosauridae).  Geodiversitas. 43 (16); 575-643. DOI: 10.5252/geodiversitas2021v43a16.

[Herpetology • 2021] Gonocephalus liogaster, Gekko (Ptychozoon) cicakterbang, Dasia grisea, Oligodon signatus, et al.• Photographic Records of Reptiles from Yala and Narathiwat Provinces Reveal Seven New Species for Thailand

กิ้งก่าดงตาสีฟ้า | Gonocephalus liogaster
ตุ๊กแกบินมลายู | Gekko (Ptychozooncicakterbang
ตุ๊กแกเรียวมลายู Gekko (Sundagekkobrowni 
งูปี่แก้วหัวศร | Oligodon signatus
in Hala Bala Wildlife Sanctuary, Yala and Narathiwat Provinces. 

in Pawangkhanant, Smits, Dugdale, ... et Poyarkov, 2021. 
Photos by P. Pawangkhanant, I. Dugdale and T. Smits. 

We report seven new country records of species of reptiles on the basis of recent herpetological surveys between 2015 – 2019 in southern Thailand: Gekko (PtychozooncicakterbangDasia grisea, and Sphenomorphus sungaicolus from Yala Province; Gonocephalus liogasterGekko (SundagekkobrowniOligodon signatus, and Xenochrophis maculatus from Narathiwat Province. Our recent findings bring the total number of reptiles recorded in Thailand to 452 species. Furthermore, our results suggest that further intensified herpetological research efforts and international collaborations are required to increase our knowledge on the herpetofaunal diversity in the tropical rain forests of southern Thailand near the border with peninsular Malaysia.

Keywords: Gonocephalus liogaster; Gekko cicaktebang; Gekko browni; Dasia grisea; Sphenomorphus sungaicolus; Oligodon signatus; Xenochrophis maculatus; new records; distribution; taxonomy; southern Thailand

Gonocephalus liogaster in Hala Bala WS, Narathiwat Province, Thailand in situ:
two adult males observed on 6 April 2019 (A, B; UTADC 9572 and UTADC 9573, respectively);
one adult female observed on 5 April 2019 (C; UTADC 9575);
one subadult (sex unknown; UTADC 9576) observed on 7 April 2019 (D).
Photos by T. Smits.

Gekko (Ptychozooncicakterbang in Betong District, Yala Province, Thailand (A – D) and 
Gekko (Sundagekkobrowni in Sirindhorn Waterfall, Hala Bala Wildlife Sanctuary, Narathiwat Province, Thailand (E, F):
 A, General dorsal view in situ (UTADC 9570b), B, dorsal head ventral view (UTADC 9570c); C, ventral head view (UTADC 9570d); D, cloacal region and ventral tail view (UTADC 9570e);
E, lateral view in situ (UTADC 9571a); F, dorso-lateral view in situ (UTADC 9571b).
Photos by P. Pawangkhanant (A – D) and I. Dugdale (E – F).

Sphenomorphus sungaicolus in Betong District, Yala Province, Thailand. 
general lateral view in situ (UTADC 9578a)
Photo by P. Pawangkhanant.
Reptile: Squamata: 
Family Agamidae Gray, 1827 
Gonocephalus liogaster (Günther, 1872) 
Tropical Forest Dragon | กิ้งก่าดงตาสีฟ้า 

Family Gekkonidae Gray, 1825 
Gekko (Ptychozooncicakterbang (Grismer, Wood, Grismer, Quah, Thy, Phimmachak, Sivongxay, Seateun, Stuart, Siler, Mulcahy, Anamza et Brown, 2019) 
Malaysia Parachute Gecko | ตุ๊กแกบินมลายู

Gekko (Sundagekko) browni Russell, 1979 
Brown’s Gecko | ตุ๊กแกเรียวมลายู

Family Scincidae Gray, 1825 
Dasia grisea (Gray, 1845) 
Gray Dasia | จิ้งเหลนต้นไม้ลายแถบ 

Sphenomorphus sungaicolus Sumarli, Grismer, Wood, Ahmad, Rizal, Ismail, Izam, Ahmad et Linkem, 2016
 Malaysian Riparian Skink | จิ้งเหลนภูเขามลายู

Family Colubridae Oppel, 1811 
Oligodon signatus (Günther, 1864) 
Banded Kukri Snake | งูปี่แก้วหัวศร 

Family Natricidae Bonaparte, 1838
 Xenochrophis maculatus (Edeling, 1864)
 Spotted Keelback | งูลายสอหลังจุด

(A – C) Gonocephalus liogaster in situ in Hala Bala WS, Narathiwat Province; 

(A – C) Gekko (Ptychozooncicakterbang in Betong District, Yala Province; 

 (E) Gekko (Sundagekkobrowni in Sirindhorn Waterfall, Hala Bala Wildlife Sanctuary, Narathiwat Province; 
(A – B) Oligodon signatus in situ in Hala Bala WS., Narathiwat Province. 

Parinya Pawangkhanant, Ton Smits, Ian Dugdale, Kanokwan Yimyoo, Tan Van Nguyen, Chatmongkon Suwannapoom and Nikolay A. Poyarkov. 2021. Photographic Records of Reptiles from Yala and Narathiwat Provinces Reveal Seven New Species for Thailand. Russian Journal of Herpetology. 28(3); 152-162. DOI: 10.30906/1026-2296-2021-28-3-152-162


Thursday, July 22, 2021

[Herpetology • 2021] Conraua sagyimase • A New Critically Endangered Slippery Frog (Conrauidae, Conraua) from the Atewa Range, central Ghana

Conraua sagyimase
Neira-Salamea, Ofori-Boateng, Kouamé, Blackburn, Segniagbeto, Hillers, Barej, Leaché and Rödel, 2021

 Atewa Slippery Frog | kwaeɛ mu nsutene apɔnkyerɛne || DOI: 10.11646/zootaxa.4995.1.4 
Forty-nine years after the last description of a slippery frog, we describe a seventh species of the genus Conraua. The new Conraua is endemic to the Atewa Range Forest Reserve, central Ghana, and is described based on genetic, bioacoustics, and morphological evidence. Recent molecular phylogenetic and species delimitation analyses support this population as distinct from nominotypical C. derooi in eastern Ghana and adjacent Togo. The new species is sister to C. derooi, from which it differs ~4% in the DNA sequence for mitochondrial ribosomal 16S. Genetic divergences in 16S to other species of Conraua range from 4–12%. The new species is distinguished morphologically from its congeners, including C. derooi, by the combination of the following characters: medium body size, robust limbs, lateral dermal fringing along edges of fingers, cream ventral color with brown mottling, the presence of a lateral line system, indistinct tympanum, the presence of inner, outer, and middle palmar tubercles, and two subarticular tubercles on fingers III and IV. We compare the advertisement calls of the new species with the calls from C. derooi and find that they differ by duration, frequency modulation, and dominant frequency. We discuss two potential drivers of speciation between C. derooi and the new species, including river barriers and fragmentation of previously more widespread forests in West Africa. Finally, we highlight the importance of the Atewa Range Forest Reserve as a critical conservation area within the Upper Guinean biodiversity hotspot.
Keywords: Amphibia, Anura, biodiversity hotspot, conservation, integrative taxonomy, Upper Guinean Forest, West Africa.

FIGURE 6. Four individuals of Conraua sagyimase sp. nov. from the Atewa Range Forest Reserve, southern Ghana ; specimens not collected.
(a: photo by Piotr Naskrecki)

FIGURE 7. Conraua sagyimase sp. nov. from the Atewa Range Forest Reserve, southern Ghana; specimen not collected.
(photos by Alan Channing)

Conraua sagyimase sp. nov.

Diagnosis. The new species generally resembles other members of the genus Conraua Nieden, 1908. Conraua sagyimase sp. nov. is the smallest species of its genus and a mid-sized (SVL of adults: 53–89 mm) aquatic frog, relative to other frog species (see Womack & Bell 2020). It has smooth dorsal skin, covered with scattered small, rounded warts; skin on belly smooth; large and protruding eyes, positioned latero-dorsally; three odontoid projections on lower jaw, one on the symphysis and one on each side of the central one on the dentary; fully webbed feet, i.e., webbing extends to the end of the last phalange of toe, disc remaining free of web.

Etymology. The name of the new species has been chosen in order to honor the people of the Sagyimase community. This small community has supported the research of COB and the anti-mining campaigns during the early 2006–2007. We hope that the naming of this endemic species will further encourage this community in their fight for an intact Atewa Range. The species epithet is used as an invariable noun in apposition to the generic name. As English common name, we suggest Atewa Slippery Frog, and as Akan common name we suggest kwaeɛ mu nsutene apɔnkyerɛne, meaning the frog of the forest streams.

FIGURE 9. Habitat from Conraua sagyimase sp. nov. in the Atewa Range Forest Reserve (a-b), southern Ghana (photos: courtesy of Piotr Naskrecki);
and type locality of Conraua derooi, Misahöhe, Togo (c-d).

FIGURE 10. Habitat from Conraua sagyimase sp. nov. in the Atewa Range Forest Reserve, southern Ghana.  

FIGURE 8. Inset shows a map of West Africa showing the location of the Atewa Range in Ghana (upper left), known localities of Conraua sagyimase sp. nov.  are shown in red and know localities of Conraua derooi in yellow. Stars indicate type localities. Altitudinal range is indicated with shading from lowlands (light) to high elevation (dark). Sources: OpenStreetMap (2020), U.S. Geological Survey (2020).

Karla Neira-Salamea, Caleb Ofori-Boateng, N'goran G. Kouamé, David C. Blackburn, Gabriel H. Segniagbeto, Annika Hillers, Michael F. Barej, Adam D. Leaché, Mark-Oliver Rödel. 2021. A New Critically Endangered Slippery Frog (Amphibia, Conrauidae, Conraua) from the Atewa Range, central Ghana. Zootaxa. 4995(1); 71-95. DOI: 10.11646/zootaxa.4995.1.4 

Tuesday, July 20, 2021

[Herpetology • 2021] Amolops teochew • A New Species of Torrent Frog (Anura, Ranidae) from the Coastal Hills of Southeastern China


Amolops teochew
Zeng, Wang, Lyu & Wang, 2021

The Amolops populations in the coastal hills in eastern Guangdong and southern Fujian, China, were controversially recorded as A. hongkongensis or A. daiyunensis before. In this study, based on the morphological examination and phylogenetic analysis of the specimens from these areas, a new species, Amolops teochew sp. nov., is described. Amolops teochew sp. nov. can be distinguished reliably from A. hongkongensis and A. daiyunensis by a combination of characteristics morphologically and distinct divergences genetically. The description of the new species highlights the Amolops diversity in the limited hilly region of southeastern China, which is remarkably higher than that in the more extensive inland region of southeastern China.

Keywords: Amolops daiyunensis group, Amolops hongkongensis, Amolops teochew sp. nov., biogeography, chresonymy, morphology, phylogeny, Amphibia

 Amolops teochew sp. nov.

Zhao-Chi Zeng, Jian Wang, Zhi-Tong Lyu and Ying-Yong Wang. 2021. A New Species of Torrent Frog (Anura, Ranidae, Amolops) from the Coastal Hills of Southeastern China. Zootaxa. 5004(1); 151-166. DOI: 10.11646/zootaxa.5004.1.6


[Botany • 2021] Amomum fangdingii (Zingiberaceae) • A New Species from Guangxi, China [Taxonomic Studies on Amomum in China III]

Amomum fangdingii X.E.Ye, Škorničk. & N.H.Xia 

in Ye, Leong-Škorničková, Bai et Xia, 2021. 
A plant formerly misidentified as Amomum maximum in Guangxi, China, is described here as a new species, namely A. fangdingii. A detailed description, distribution map and illustrations are provided together with a taxonomic key distinguishing A. fangdingii from eight morphologically similar species characterised by cincinnate inflorescences occurring in Cambodia, China, Laos and Vietnam.

Keywords: Amomum maximum, A. velutinum, gingers, misidentification, Monocots. 

FIGURE 2. Amomum fangdingii X.E.Ye, Škorničk. & N.H.Xia 
(A) Habit, (B) Bladeless leaf sheaths with crisped margins, (C) Infructescence, (D) Dissection of a flower (from left to right): calyx (split open), corolla lobes, ovary with epigynous glands, style and pedicel, labellum, floral tube with stamen and two minute lateral staminodes (front view, side view & back view).
Photos by Ye Xing-Er; (A)-(C) based on X.E. Ye 160, (D) based on X.E. Ye 12.

FIGURE 1. Amomum fangdingii X.E.Ye, Škorničk. & N.H.Xia 
(A) Habit, (B) Leaves, (C) Ligule, (D) Rhizome with inflorescences, (E) Bladeless leaf sheaths with crisped margins, (F) Flower (front view), (G) Flower (side view), (H) A single inflorescence and dissection of a cincinnus (from left to right): cincinnus, bract, single flower, single flower bud, bracteole, (I) Infructescence.
Photos (A)-(H) by Ye Xing-Er; based on X.E. Ye 127. 
Photo (I) by Chen Juan; based on J.B. Ni & J. Chen 061008.

Amomum fangdingii X.E.Ye, Škorničk. & N.H.Xia sp. nov.

Xing-Er Ye, Jana Leong-Škorničková, Lin Bai and Nian-He Xia. 2021. Taxonomic Studies on Amomum (Zingiberaceae) in China III: Amomum fangdingii, A New Species from Guangxi. Phytotaxa. 490.3; 263–270. DOI: 10.11646/phytotaxa.490.3.4  

[Botany • 2021] Begonia lophura & P. villosula (Begoniaceae, section Platycentrum) • Two New Species of Begonia from the Central Highlands of Vietnam

  Begonia lophura T. S. Hoang & C.W. Lin

in Hoang et Lin, 2021.
Two new species of Begonia L., namely Begonia villosula T.S.Hoang & C.W.Lin and B. lophura T.S.Hoang & C.W.Lin, from the Central Highlands of Vietnam, are described and illustrated. They are assigned to Begonia sect. Platycentrum based on several characters including axillary inflorescence, 4-tepaled staminate flower and 5-tepaled pistillate flower with bilocular ovary, each with two placentae. Begonia villosula resembles B. thomsonii, but it is different in its leaf margins crenate to crenulate (vs. irregularly serrulate), stamens 80–120 (vs. 35–70), pistillate flower 4-tepaled (vs. 5-tepaled) and ovary hirsute (vs. villous). Begonia lophura is somewhat similar to B. pavonina, but it is different in having widely ovate (vs. ovate) and abaxially red hirsute (vs. glabrous) leaves, bracts persistent (vs. caducous), tepals hirsute (vs. glabrous) in both of staminate and pistillate flowers, capsule scabrous (vs. glabrous) and abaxial wing strongly swollen (vs. thin, not swollen). The conservation status of the two new species are assessed as Vulnerable according to the IUCN Red List criteria.

Keywords: Eudicots, Asia, biodiversity, endemism, taxonomy, morphology 

Begonia lophura T. S. Hoang & C.W. Lin

Begonia villosula T. S. Hoang & C.W. Lin 

 Thanh Son Hoang and Che-Wei Lin. 2021. Two New Species of Begonia (sect. Platycentrum, Begoniaceae) from the Central Highlands of Vietnam: B. villosula and B. lophura Phytotaxa. 510(3); 263–274. DOI: 10.11646/phytotaxa.510.3.6
𝐵. 𝑣𝑖𝑙𝑙𝑜𝑠𝑢𝑙𝑎 and 𝐵. 𝑙𝑜𝑝ℎ𝑢𝑟𝑎

[Botany • 2021] Curcuma wanenlueanga (Zingiberaceae) ว่านเอ็นเหลือง • A New Species of Curcuma from Thailand

 Curcuma wanenlueanga Saensouk, Thomudtha & Boonma

in Saensouk, Boonma, Thomudtha, et al., 2021. 
ว่านเอ็นเหลือง || DOI: 10.13057/biodiv/d220752

 Curcuma wanenlueanga Saensouk, Thomudtha & Boonma, a new species of Curcuma subgenus Curcuma (Zingiberaceae) from Thailand was described with detailed illustrations, and photographs. The dominant morphological description is terminal inflorescence, leaf adaxially green with reddish-purple along the midrib, leaf-sheath with reddish-brown tinge. Moreover, the color and smell rhizome of C. wanenlueanga has yellow with a darker core internally. It is distributed in Mae Hong Son Province, Northern Thailand, and cultivated throughout the country, i.e. Nakhon Nayok, Maha Sarakham, Chiang Mai, Tak, Chantaburi, Suratthani, and Kanchanaburi Provinces. It is used as Thai traditional medicinal. It grows in in sandy loam soil and well-drained in the mixed-deciduous forest, at elevation 700-900 m asl. It is accompanied by a revised key to 26 species of Curcuma subgenus Curcuma from Thailand.

Keywords: Curcuma, new species, Thailand, Zingiberaceae

Curcuma wanenlueanga Saensouk, Thomudtha & Boonma sp. nov.
(A) inflorescence with flowers and sterile bract–side view, (B) lateral staminodes, (C) labellum, (D) dorsal corolla lobe–front and side view, (E) lateral corolla lobes, (F) anther–front and side view, (G) habitus, (H) flower with calyx and ovary, (I) bracteoles, (J) calyx, (K) epigynous glands with ovary.
Drawn by Thawatphong Boonma

Curcuma wanenlueanga Saensouk, Thomudtha & Boonma sp. nov.
 (A) flower–side view, (B) back view of flower with the back view of stamen, (C) flower with bracteoles and inflorescence with flowers–side view, (D) flower–front view, (E) plants in natural habitat in oblique view to show leaf-adaxially with reddish-purple tinge along the midrib and its inflorescence.
Photographed by Thawatphong Boonma

Curcuma wanenlueanga Saensouk, Thomudtha & Boonma, sp. nov. 
subgenus Curcuma

Curcuma wanenlueanga is belonged to the subgenus Curcuma according to the presence of epigynous glands, inflorescence with coma bracts, flowers closed-form, anther spurs acute, and downward-pointed. The morphological description and producing terminal inflorescence of C. wanenlueanga make it similar to C. longa and C. amada, but differ in having leaf adaxially green with reddish-purple along the midrib, leaf-sheath with reddish-brown tinge, whereas C. longa and C. amada are green without reddish tinge. Moreover, the color and smell of their rhizome can easily distinguishable from each other which C. amada has light yellow, white towards the periphery, and smell of green mango while C. wanenlueanga has yellow with a darker core internally and C. longa has deep orange-yellow internally, slightly to strongly aromatic respectively without the smell of green mango as in C. amada (Table 1).

Etymology: The specific epithet ‘wanenlueanga’ derived from Thai vernacular name of this species which “wan” means “herbs”, “en” means “tendons” referred to its medicinal properties used in traditional medicine to treat beriberi related to tendons and "lueang" means "yellow" referred to its yellow rhizome.

Vernacular name: “Wan-En-Lueang - ว่านเอ็นเหลือง” in Thai language.

Surapon Saensouk, Thawatphong Boonma, Adisak Thomudtha, Pariya Thomudtha and Piyaporn Saensouk. 2021. Curcuma wanenlueanga (Zingiberaceae), A New Species of Subgenus Curcuma from Thailand. Biodiversitas: Journal of Biological Diversity. 22(7); 2988-2994. DOI: 10.13057/biodiv/d220752


[Botany • 2021] Shoubiaonia yunnanensis (Amaryllidaceae) • A New Genus from Yunnan Province, China

Shoubiaonia yunnanensis W.H. Qin, W.Q. Meng & K. Liu

in Qin, Meng, Zhang, ... et Liu, 2021. 
Shoubiaonia yunnanensis is described here as a new genus and species of Amaryllidaceae from Yunnan Province, southwest China. Phylogenetic analyses based on DNA sequences of nuclear ribosomal ITS and three plastid regions (matK, ndhF and rbcL) strongly support Shoubiaonia as a member in the tribe Lycorideae of the Eurasian clade of Amaryllidaceae. However, morphologically S. yunnanensis is readily distinguished from the other genera in the Eurasian clade by its 2-valved spathe, 3-lobed stigma, ovary with two ovules per locule and silver black, subglobose seeds. The new genus is the second genus of the subfamily Amaryllidoideae distributed in natural habitat in China.

Keywords: Amaryllidaceae, new genus, Shoubiaonia, Shoubiaonia yunnanensis

Shoubiaonia yunnanensis W.H. Qin, W.Q. Meng & K. Liu. gen. & sp. nov.

Etymology: The genus epithet Shoubiaonia honors Pro. Shoubiao Zhou from Anhui Normal University, who worked on plant diversity and taxonomy, including Amaryllidaceae and Gesneriaceae, and made important contributions to the subtropical flora in China.

Vernacular name: Shou biao suan shu (守标蒜属) (Chinese), Yun nan shou biao suan (云南守标蒜) (Chinese).

Wei-Hua Qin, Wei-Qi Meng, Dong Zhang, Ying Wang, Zhong-Lin Li, Lu Sun and Kun Liu. 2021. A New Amaryllidaceae Genus, Shoubiaonia, from Yunnan Province, China. Nordic Journal of Botany. DOI: 10.1111/njb.02703


[Ichthyology • 2021] Loricariichthys melanurus • A New Species of the Loricariid Catfish Genus Loricariichthys (Siluriformes: Loricariidae) from Eastern Brazil

Loricariichthys melanurus 
 Reis,  Vieira & Pereira, 2021

A new species of Loricariichthys is described from the Rio Itabapoana and Rio Itapemirim basins, two small, adjacent, yet independent, coastal drainages in south Espírito Santo State. Loricariichthys melanurus, new species, is distinguished from most congeners by the anterior margin of abdominal plates falling at or slightly ahead of the transverse line between the pectoral-fin spines, not reaching the level of the lower end of the gill slits, further on other features of external morphology. The new species can be differentiated from L. castaneus, the most similar and geographically closest species, by the possession of a conspicuous black marginal band at the distal portion of middle and lower caudal-fin rays and a darkened distal half of dorsal fin, which are absent in the former. Samples analyzed of the two species have a COI pairwise genetic distance of 4.6%. The paleodrainage reconstruction inferred for a sea-level-retreat of maximum glacial period of the Pleistocene suggests that neither the Itabapoana and Itapemirim Rivers, nor the other coastal rivers of eastern Brazil, where L. castaneus occurs, have been in contact during this period.

Loricariichthys melanurus, holotype, MCP 54287, 207.4 mm SL, female,
 left bank of original channel of Rio Itabapoana, Presidente Kennedy, Espírito Santo State at border with Rio de Janeiro State, Brazil.

Loricariichthys melanurus, new species

Etymology.— The specific epithet of Loricariichthys melanurus from the Greek lekar (melas), black, and otqa (oura), tail, referring to the black marginal band of the caudal fin. An adjective.

 Roberto E. Reis, Fábio Vieira and Edson H. L. Pereira. 2021. A New Species of the Loricariid Catfish Genus Loricariichthys (Teleostei: Siluriformes) from Eastern Brazil.  Ichthyology & Herpetology. 109(2):557-566. DOI: 10.1643/i2020013

Monday, July 19, 2021

[Herpetology • 2021] First National Record of Gracixalus quangi and G. yunnanensis (Anura: Rhacophoridae) from Thailand

 Gracixalus quangi Rowley, Dau, Nguyen, Cao & Nguyen, 201
 G. yunnanensis Yu, Li, Wang, Rao, Wu & Yang, 2019
Habitat of Gracixalus quangi (A) and G. yunnanensis (B)located in Doi Phu Kha NP., Nan Province, Thailand.  
in Lorphengsy, Nguyen, Poyarkov, ... et Suwannapoom, 2021. 
Photos by P. Pawangkhanant.

Background: The bushfrog genus Gracixalus Delorme, Dubois, Grosjean & Ohler, 2005 is found in southern and south-western China, Vietnam, Laos, Thailand and Myanmar. It is presently comprised of 17 species. In Thailand, only two species have been recorded, namely G. carinensis (Boulenger) and G. seesom (Massui, Khonsue, Panha & Eto). The latter of these two species is currently known to be endemic to the country.

New information: Based on recent field work conducted in 2019 in Doi Phu Kha National Park, Nan Province of northern Thailand, we are reporting two new records of the genus Gracixalus, G. quangi and G. yunnanensis, from Thailand, based on morphological and molecular evidence. In addition, this is the first study to report on the identification of a female specimen of G. yunnanensis. Furthermore, morphological data and natural history notes of the aforementioned species in Thailand have been provided, along with updated locations for the distribution of both species.

Keywords: Gracixalus quangi, G. yunnanensis, new record, 16s rRNA, Nan Province

Figure 2. Male Gracixalus quangi (AUP-00388) collected from Doi Phu Kha NP, Nan Province, Thailand. A. Lateral view; B. Ventral view.  
Figure 4. Male of G. yunnanensis (AUP-1985) in life. A. Lateral view; B. Dorsal view; C. Volar view of the left hand; D. Plantar view of the right foot.
Photos by P. Pawangkhanant.

Male Gracixalus quangi (AUP-00388) collected from Doi Phu Kha NP, Nan Province, Thailand. A. Lateral view; B. Ventral view.  
Male of G. yunnanensis (AUP-1985) in life. A. Lateral view; B. Dorsal view. 
Habitat of Gracixalus quangi (A) and G. yunnanensis (B) located in Doi Phu Kha NP., Nan Province, Thailand. 
 Photos by P. Pawangkhanant.

 Sengvilay Lorphengsy, Tan Van Nguyen, Nikolay A. Poyarkov, Yun-He Wu, Parinya Pawangkhanant, Supaporn Passorn, Jing Che and Chatmongkon Suwannapoom. 2021. First national record of Gracixalus quangi Rowley, Dau, Nguyen, Cao & Nguyen, 2011 and G. yunnanensis Yu, Li, Wang, Rao, Wu & Yang, 2019 (Amphibia: Anura: Rhacophoridae) from Thailand. Biodiversity Data Journal. 9: e67667. DOI: 10.3897/BDJ.9.e67667