Thursday, June 24, 2021

[Ichthyology • 2021] Acroteriobatus andysabini & A. stehmanni • Resolution of the Acroteriobatus leucospilus Species Complex, with A Redescription of A. leucospilus (Norman, 1926) (Rhinopristiformes, Rhinobatidae) and Descriptions of Two New western Indian Ocean Species of Acroteriobatus


Acroteriobatus leucospilus (Norman, 1926)

in Weigmann, Ebert & Séret, 2021.
 
Abstract
Recent sampling efforts and examinations of museum material provided evidence for a complex of species within Acroteriobatus leucospilus (Norman, 1926). The present manuscript contains a redescription of A. leucospilus involving the syntypes and additional material, as well as formal descriptions of two new species of Acroteriobatus Giltay, 1928. All specimens of both new species were found in the western Indian Ocean. Individuals of the first new species, hereafter referred to as Acroteriobatus andysabini sp. nov., were identified originating from Madagascar, and specimens of the second new species, hereafter referred to as Acroteriobatus stehmanni sp. nov., were only found off Socotra Islands at the junction between the Gulf of Aden and the Arabian Sea. Both new species appear to be endemic to the respective region and allopatric to A. leucospilus and occur in coastal waters to at least 80 m and 43 m depth, respectively. They differ from A. leucospilus in a number of characteristics including the maximum size and coloration in fresh. Acroteriobatus andysabini sp. nov. is a large species growing to more than 100 cm total length (TL) and with elongated bluish-gray spots on snout giving “stripe-nosed” appearance; numerous small bluish-gray spots on pectoral, pelvic, dorsal, and caudal fins; brown spots on trunk and fin bases; lateral tail folds striped orange and white; and ventral surface largely white but with a V-shape pattern of faint to dark speckled black spots on snout tip. Acroteriobatus stehmanni sp. nov. is a small species growing to ~62 cm TL and with sparse patterning with small bluish-gray circular spots confined to snout tip, posterior pectoral-fin margins, a pair on midbody, and few on posterior pelvic-fin margins, rather indistinct small to larger dark brown spots, and lateral tail folds and ventral surface white. Acroteriobatus leucospilus is a medium-sized species growing to ~96 cm TL and with patterning similar to A. andysabini sp. nov. but ventral surface uniformly white and lateral tail folds white or striped blue and brown. Taxonomical differences include nasal lamellae counts (42–48 in A. andysabini sp. nov. vs. 43–48 in A. stehmanni sp. nov. vs. 37–41 in A. leucospilus), snout angle (76–85° vs. 71–77° vs. 68–81°), and dorsal head length (24.2–33.5% vs. 17.2–22.8% TL vs. 24.0–29.2% TL). A key to the species of Acroteriobatus is given for the first time.

Keywords: Chondrichthyes, Elasmobranchii, Systematics, Guitarfishes, Taxonomy, Morphology


Family Rhinobatidae Bonaparte 1835

Genus Acroteriobatus Giltay, 1928

Type species: Rhinobatus (Syrrhina) annulatus Smith 
in Müller & Henle, 1841 
by subsequent designation

Acroteriobatus andysabini sp. nov.,
Fig. 1 SAIAB 97396, juvenile male holotype, 565 mm TL fresh, in total dorsal view taken directly after catching. Photograph by Elaine Heemstra, NRF-SAIAB
Fig. 2 SAIAB 97396, juvenile male holotype, 550 mm TL, in total dorsal view. Scale bar: 5 cm. Photograph courtesy Marsha Englebrecht. 
Fig. 3 SAIAB 97396, juvenile male holotype, 550 mm TL, in total ventral view. Scale bar: 5 cm. Photograph courtesy Marsha Englebrecht.


Acroteriobatus andysabini sp. nov. Weigmann, Ebert & Séret

Diagnosis: A large Acroteriobatus species distinguished by the following combination of characters: dorsal surface smooth, without prominent thorns or tubercles, except for enlarged granular denticles partially around orbital rims and irregularly distributed along midline from nape to somewhat anterior to first dorsal-fin origin; absent between dorsal fins and upper caudal fin. Snout semi-translucent with elongated bluish-gray spots giving “stripe-nosed” appearance, numerous small bluish-gray spots covering disc and pectoral, pelvic, dorsal, and caudal fins on a brown background with larger, slightly darker, indistinct brown spots covering the tail and fin bases; outer edges of pelvic-fin margins white, lateral tail folds striped orange and white; ventral surface white, except for a V-shape pattern of faint to dark speckled black spots on snout tip. Nasal lamellae 42–48; upper jaw tooth row count ~80–87; 179–185 post-synarcual centra; 195–200 total vertebral segments; 64–68 total pectoral skeleton radials.

Distribution: Acroteriobatus andysabini sp. nov. is presently only known from the coastal waters surrounding Madagascar and may be endemic to this region (Fig. 13). Records are from off Tôlanaro, Anosy region, and Cape Andavaka (southeastern Madagascar), Toliara and Ankilibe (southwestern Madagascar), and Antongil Bay (northeastern Madagascar). Its depth range is from shallow coastal waters to at least 80 m. Fricke et al. (2018) reported A. leucospilus as a new species record for Madagascar but commented that the species had been misidentified previously as Rhinobatos (= Acroteriobatus) annuulatus by several earlier authors.

Etymology: The species name andysabini is in honor of Andy Sabin for his gracious support of the Lost Sharks project at the Pacific Shark Research Center.


 Acroteriobatus stehmanni sp. nov.
Fig. 16
ZMH 25557, adult female paratype, 602 mm TL fresh, in total dorsal view taken directly after catching. Scale bar: 5 cm. The photograph was taken and kindly provided by Matthias Stehmann. 
Fig. 17 ZMH 25558, adult female paratype, 594 mm TL fresh, in total dorsal view taken directly after catching. Scale bar: 5 cm. The photograph was taken and kindly provided by Matthias Stehmann. 

Fig. 14
ZMH 25553, adult male holotype, 597 mm TL, in total dorsal view. Scale bar: 5 cm. 
Fig. 15 ZMH 25553, adult male holotype, 597 mm TL, in total ventral view. Scale bar: 5 cm

Acroteriobatus stehmanni sp. nov. Weigmann, Ebert & Séret
 
Diagnosis: A small Acroteriobatus species distinguished by the following combination of characters: dorsal surface smooth, without prominent thorns or tubercles, except for slightly enlarged granular denticles partially around orbital rims and rather regularly distributed along midline from nape to or to somewhat anterior to first dorsal-fin origin; absent between dorsal fins and upper caudal fin. Snout semi-translucent with a few, somewhat elongated bluish-gray spots only giving it a very reduced stripe-nosed appearance, patterning with small bluish-gray circular spots generally sparse and confined to symmetrical patterns on snout tip, posterior pectoral-fin margins, a pair of tiny spots on midbody behind occipital joint, and few spots on posterior pelvic-fin margins; indistinct brown spots on the body and dorsal and caudal fins; ventral surface white except for a blackish blotch and two tiny black spots on ventral snout tip in smallest juvenile paratype. Nasal lamellae 43–48; upper jaw tooth row count ~64–78; 181–186 post-synarcual centra; 194–200 total vertebral segments; 63–67 total pectoral skeleton radials.

Distribution: Acroteriobatus stehmanni sp. nov. is presently only known from the coastal waters surrounding the Socotra Islands and may be endemic to this region (Fig. 13). It is known from 36 to 43 m depth.

Etymology: The species is named in honor of Dr. Matthias F.W. Stehmann for his invaluable contributions to chondrichthyan taxonomy, particularly with respect to skates. He taught SW and BS chondrichthyan taxonomy, collected all type specimens of the new species, and kindly provided fresh photographs of two of them.


Acroteriobatus leucospilus, underwater photograph showing the vivid live coloration.

photograph by Dennis King.

Acroteriobatus leucospilus (Norman, 1926)
(Blue-spotted guitarfish)
 
Diagnosis: A medium-sized Acroteriobatus species distinguished by the following combination of characters: dorsal surface smooth, without prominent thorns or tubercles, except for slightly enlarged granular denticles partially around orbital rims and rather regularly distributed along midline from nape to near first dorsal-fin origin; absent between dorsal fins and upper caudal fin. Snout semi-translucent with elongated bluish spots giving stripe-nosed appearance, numerous small bluish spots covering snout, pectoral, pelvic, dorsal, and caudal fins but not central disc on a sandy brown background with darker brown spots of varying sizes covering the disc, tail, fin bases, and fins, sometimes giving the caudal peduncle a striped appearance; outer edges of pectoral- and pelvic-fin margins blue, lateral tail folds white or striped blue and brown; ventral surface white. Nasal lamellae 37–41; upper jaw tooth row count ~60–75; 187–192 post-synarcual centra; 200–205 total vertebral segments; 63–70 total pectoral skeleton radials.

Distribution: Acroteriobatus leucospilus so far has been recorded from off the central Transkei coast (Eastern Cape Province) to the northern KwaZulu-Natal Province (South Africa) and Mozambique. Ebert et al. (2021), based on the examined material, extended its range to Zanzibar and Dar es Salaam, Tanzania (Fig. 13). It is known from 0 to 100 m depth (Compagno et al. 1989; Séret et al. 2016; Weigmann 2016) but seems to be most abundant in depths of around 20 fathoms or 37 m (Wallace 1967).


Simon Weigmann, David A. Ebert and Bernard Séret. 2021. Resolution of the Acroteriobatus leucospilus Species Complex, with A Redescription of A. leucospilus (Norman, 1926) and Descriptions of Two New western Indian Ocean Species of Acroteriobatus (Rhinopristiformes, Rhinobatidae). Marine Biodiversity. 51, 58. DOI: 10.1007/s12526-021-01208-6

[Herpetology • 2021] Gonyosoma coeruleum งูทางมะพร้าวเขียว • A New Species of Gonyosoma Wagler, 1828 (Serpentes, Colubridae), previously confused with G. prasinum (Blyth, 1854)


Gonyosoma coeruleum
Liu, Hou, Lwin, Wang & Rao, 2021

Blue-eyed Green Mountain Racer | งูทางมะพร้าวเขียว  || DOI: 10.3897/evolsyst.5.66574

Abstract
A new species of the genus Gonyosoma Wagler is described from Yunnan Province, China. The new species closely resembles G. prasinum (Blyth), but it is differentiated from the latter species by the following characters: precloacal plate divided, iris blue and inside of mouth greyish-white in life. Based on phylogenetic analyses of mitochondrial cytochrome b sequence data, the new species is recovered as the sister species to G. prasinum by Bayesian Inference and Maximum Likelihood analyses. The uncorrected pairwise distance between the new species and other species of the genus Gonyosoma ranged from 11.78% to 17.07% calculated using the mitochondrial cytochrome b sequence. This discovery increases the number of Gonyosoma species to seven.

Key Words: Htamanthi, morphology, phylogeny, systematics, taxonomy, Yunnan


Figure 5. The specimens of Gonyosoma coeruleum sp. nov. and G. prasinum in life. 
A the female paratype (KIZ20200729) of Gonyosoma coeruleum sp. nov. B the juvenile paratype (KIZ20200904) of Gonyosoma coeruleum sp. nov. 
C the specimen (SEABRI2019120043) of G. prasinum from Myanmar D the specimen (SEABRI2019120075) of G. prasinum from Myanmar.


Gonyosoma coeruleum sp. nov.
 
Diagnosis: Body size medium (SVL 656–833mm in adults); body slender, head elongated and distinct from neck; large eyes with round pupil; tail long (23–28% of total length) and slender; dorsal scales in 19-19-15 rows, 7–11 rows of mid-dorsal scales keeled; single preocular; two postoculars; one or two anterior temporals and two or three posterior temporals; 189–202 ventral scales; 89–106 paired subcaudals; precloacal plate divided. Dorsal surface bright green with brownish-yellow tip of tail, iris blue, inside of mouth greyish white; tongue brownish yellow with black tips.


Etymology: The specific epithet “coeruleum” is the neutral gender of the Latin adjective coeruleus (a, um) meaning “blue”, and is given in reference to the coloration of the iris of this species.

Figure 4. Comparisons of the colors of iris, the colors of inside of mouth, and the precloacal plates. 
A, C, and E the holotype (KIZ2019028) of Gonyosoma coeruleum sp. nov.
B, D, and F the specimen (SEABRI2019120043) of G. prasinum.

Distribution: Gonyosoma coeruleum sp. nov. is currently known from Xishuangbanna Autonomous Prefecture and Puer City, Yunnan Province, China (Fig. 6), it is probably also distributed in other parts of Yunnan Province and Sichuan, Guizhou, and Hainan Province, China, as well as Southern Myanmar, Thailand, Laos, and Vietnam.

Figure 7. A habitat at the type locality of Gonyosoma coeruleum sp. nov.Gonyosoma coeruleum sp. nov. asleep on a tree at night.

   

Figure 2. Type series of Gonyosoma coeruleum sp. nov. in preservative. A dorsal view B ventral view.


 Shuo Liu, Mian Hou, Ye Htet Lwin, Qiaoyan Wang and Dingqi Rao. 2021. A New Species of Gonyosoma Wagler, 1828 (Serpentes, Colubridae), previously confused with G. prasinum (Blyth, 1854). Evolutionary Systematics. 5(1): 129-139. DOI: 10.3897/evolsyst.5.66574

   

[Botany • 2021] Kalanchoe darainensis (Crassulaceae) • A New Species from northeastern Madagascar


Kalanchoe darainensis D.-P. Klein & Callm.

in Klein, Shtein, Nusbaumer et Callmander, 2021. 

Abstract 
A new species of small, rosulate and upright-flowered Kalanchoe Adans. (Crassulaceae) from northeastern Madagascar is described and illustrated: Kalanchoe darainensis D.-P. Klein & Callm. Morphologically, Kalanchoe darainensis is most similar to Kalanchoe blossfeldiana Poelln. and Kalanchoe globulifera H. Perrier which are known from the northwestern Tsaratanana Massif, c. 100 km southwest of Daraina. Detailed notes on the habitat and ecology of Kalanchoe darainensis are provided, as well as a short taxonomical overview of allied species of the Kalanchoe subg. Kalanchoe from Madagascar, including an identification key to those species. Despite its restricted distribution in the protected Antsahabe massif, the new species is preliminary assessed as “Least concern” [LC] using the IUCN Red List Criteria. 

KEYWORDS: Crassulaceae, Kalanchoe, Madagascar, Daraina, Loky-Manambato, new species


Kalanchoe darainensis D.-P. Klein & Callm.
A. Habit; B. Basal leaf; C. Dissection of corolla, showing androecium and gynoecium; D. Flower; E. Inflorescence; F. Anther with flattened spheroid connective gland.
 [Ranirison 749, TEF] [Drawings: R.L. Andriamiarisoa]

 
Kalanchoe darainensis D.-P. Klein & Callm.
A. Rosulate growth with succulent, bright green to olive leaves; B. Terminal, scarlet red and many-flowered dichasial cymes; C. Leaves entirely covered with short to long glandular hairs.
[A – B: Ranirison 749; C: Callmander et al. 241] 
[Photos: A – B: P. Ranirison; C: M. Callmander]



David-Paul Klein, Ronen Shtein, Louis Nusbaumer and Martin W. Callmander. 2021. Kalanchoe darainensis (Crassulaceae), A New Species from northeastern Madagascar. Candollea. 76(1); 117-123. DOI: 10.15553/c2021v761a12

[Botany • 2021] Sonerila konkanensis (Melastomataceae) • A New Species from South Goa, India

 

Sonerila konkanensis Resmi & Nampy 

in Resmi, Nampy & Akshatra, 2021. 

Abstract
A new tuberous species of Sonerila Roxb. (Melastomataceae, Sonerileae) from Chandreshwar hills, South Goa is described in the course of a taxonomic revision of the genus in India. Sonerila konkanensis Resmi & Nampy is similar to Sonerila talbotii G.S. Giri & M.P. Nayar and Sonerila sreenarayaniana Sunil et al. but differs in several characters that are detailed in the morphological discussion presented herein. The status of the new taxon is assessed as “Vulnerable” according to IUCN Red List Categories and Criteria. We also provide explanatory images of living plants as well as SEM images of pollen grains and seeds and information concerning the habitat.

KEYWORDS: Melastomataceae, Sonerila, South India, Goa, new species




Sonerila konkanensis Resmi & Nampy

 
Sekarathil Resmi, Santhosh Nampy and Pracy Fernandes Akshatra. 2021. Sonerila konkanensis (Melastomataceae), A New Species from South Goa, India. Candollea. 76(1);  139-143. DOI: 10.15553/c2021v761a14


[Botany • 2020] Bulbophyllum nghiasonii • A New Miniature Species of Bulbophyllum sect. Brachyantha (Orchidaceae) from northern Vietnam


Bulbophyllum nghiasonii  Vuong, Aver. & V.S.Dang

in Dang, Averyanov, Dang, Bui, ... et Truong, 2021.

Abstract
The new species discovered in Thanh Hoa Province of northern Vietnam described here as a new species for science. It is similar to Bulbophyllum muscicola but differs in smaller habit, inflorescence shorter than leaves, shorter lateral sepals with unequally lobed blunt apex, and slender stelidia. The newly described species also can be compared with B. japonicum but it differs in the size and shape of leaves, tepals, and lip. Detailed morphological description, illustration, data on distribution, and phenology of the new species are presented.

Keywords: endemism, eastern Indochina, plant diversity, plant taxonomy, Thanh Hoa Province, Monocots



Bulbophyllum sect. Brachyantha Rchb.f. 

Bulbophyllum nghiasonii Vuong, Aver. & V.S.Dang, sp. nov. 

Etymology:—The species is named after Prof. Hoang Nghia Son, the director of the Institute of Tropical Biology (Vietnam Academy of Science and Technology), who established and supported VNM Herbarium as the significant center for studies of the plant taxonomy.
 

Minh Quan Dang, Leonid V. Averyanov, Van Son Dang,  Van Huong Bui, Roland Amsler, Tatiana Maisak and Ba Vuong Truong. 2021.  A New Miniature Species, Bulbophyllum nghiasonii, sect. Brachyantha (Orchidaceae) from northern Vietnam. Phytotaxa. 505(2); 235–239. DOI: 10.11646/phytotaxa.505.2.10

[Botany • 2020] Ipomoea bonsai (Convolvulaceae) • A Magnificent New Species from the Caatinga Domain, Brazil


Ipomoea bonsai D. Santos & Alencar

in Santos, Alencar, Loiola & Buril, 2020. 


Abstract
A new species of Ipomoea (Convolvulaceae), endemic to the Caatinga domain of northeastern Brazil, is described and illustrated. Ipomoea bonsai has often been misidentified as I. brasiliana or I. subincana in herbarium collections, probably due to the densely pubescent and brochidodromous leaves of all three species. The new species is a shrub, with unexpectedly robust stems and scandent branches. A diagnosis, with a complete morphological description, illustrations, taxonomic comments, conservation status, distribution map, and photographs are presented.

Keywords: Biodiversity; Serra das Almas; endemic species; taxonomy

Ipomoea bonsai D. Santos & Alencar.
A. I. bonsai population. B. Trunk at the base of the plant. C. Trailing stems. D. Bud. E. Calyx and bracteoles. F. Inflorescence. 
Photos by F. C. P. Costa and J. Alencar. 


Ipomoea bonsai D. Santos & Alencar.
 A. Habit. B. Branch. C. Sepals. D. Androecium. E. Gynoecium. F. Fruit. G. Seeds.
 Drawn from the holotype by R. Carvalho.

Ipomoea bonsai D. Santos & Alencar


Diego Santos, Juliana Alencar, Maria Iracema Bezerra Loiola and Maria Teresa Buril. 2020. Ipomoea bonsai (Convolvulaceae), A Magnificent New Species from the Caatinga Domain, Brazil.  Systematic Botany. 45(3); 652-657. DOI: 10.1600/036364420X15935295449907

     

  

Wednesday, June 23, 2021

[Ichthyology • 2021] Corydoras bethanae • A New Arc-striped Species of Corydoras Lacépède, 1803 (Siluriformes: Callichthyidae) from the Peruvian Amazon


A. Corydoras bethanae, female holotype, río Blanco, Department of Loreto, Peru.
B. Corydoras arcuatus unpreserved aquarium specimen.
 
Bentley, Grant & Tencatt, 2021
Photos by Steven Grant & Hans-Georg Evers.

Abstract
A new Corydoras is described from the Blanco and Ucayali river basins in Peru. The new species can be distinguished from its congeners by having the following features: (I) posterior margin of dorsal-fin spine with laminar serrations directed towards the origin of the spine; (II) a long, wide, arched, and continuous black stripe, which runs parallel to the dorsal profile of the body, extending at least from the region below anterior origin of dorsal fin to the anterior half of the ventral caudal-fin lobe; (III) a black stripe transversally crossing the eye, forming the typical mask-like blotch; mask clearly not fused to arched stripe in most specimens; some specimens with mask separated from arched stripe by a thin line around the suture between neurocranium (in the region composed by the posteroventral margin of parieto-supraoccipital plus the posterodorsal margin of the compound pterotic) and first dorsolateral body plate; (IV) posterior margin of pectoral-fin spine with laminar serrations directed towards the origin of the spine; (V) pointed snout, presenting a long mesethmoid, with anterior tip larger than 50% of the entire length of the bone; and (V) ventral surface of trunk covered by small, non-coalescent platelets. A discussion on the possible positive adaptive value of the arc-striped color pattern is also provided.

Keywords: Pisces, Aposematism, Corydoradinae, mimicry, río Blanco, taxonomy

 
FIGURE 2. A. Corydoras bethanae, holotype alive, MUSM 69403, female, 51.2 mm SL, Peru, Department of Loreto, río Blanco. B. Corydoras arcuatus unpreserved aquarium specimen. C. Corydoras granti unpreserved aquarium specimen from Peru, río Tapiche.
Photos A and C by Steven Grant, B by Hans-Georg Evers.
 

FIGURE 6. Live coloration of paratypes of Corydoras bethanae, BMNH 2017.5.25.1-21, showing A. female, and B. male. Fin coloration affected by background colors. Arrows indicate gap in arc-stripe around the suture between neurocranium.
Photos by Steven Grant.

FIGURE 8. Photos of the habitat of Corydoras bethanae, new species, showing A. its type-locality, the río Blanco, and B. the confluence of río Blanco (left) with río Tapiche, both in Peru.
Photo A by Mark Breeze, and B by Tom Christoffersen.


Rebecca Frances Bentley, Steven Grant and Luiz Fernando Caserta Tencatt. 2021. A New Arc-striped Species of Corydoras Lacépède, 1803 (Teleostei: Callichthyidae) from the Peruvian Amazon. Zootaxa. 4948(2); 184–200. DOI: 10.11646/zootaxa.4948.2.2  

Tuesday, June 22, 2021

[Herpetology • 2021] Euphlyctis kerala • Morphological Groupings within Euphlyctis (Anura: Dicroglossidae) and Description of A New Species from the Surroundings of Thattekad Bird Sanctuary, Kerala, India

 

Euphlyctis kerala
Dinesh, Channakeshavamurthy, Deepak, Ghosh & Deuti, 2021

 
Abstract
The skittering frog genus Euphlyctis is known to have a distribution range from Arabian Peninsula to Bangladesh through India and Sri Lanka. Although species descriptions were initiated about two centuries ago in the genus with a small number of species described, taxonomic identities and genetic information for many species are still incomplete / inaccurate. Here, we report the systematic status of this group, discuss a series of taxonomic issues, and describe a new species. Based on morphological characters and colour patterns, and their reciprocal monophyly in the molecular tree, two morphological groups, ‘cyanophlyctis group’ and ‘hexadactylus group’ are established within the genus Euphlyctis. We discuss the genetic identity for E. cyanophlyctis, described 220 years ago from the Indian subcontinent, from the surroundings of its type locality. E. mudigere is proposed as a junior synonym of E. cyanophlyctis as it was described from populations here considered to originate from the general distribution area of the latter taxon, and without substantial genetic divergence from other populations here attributed to E. cyanophlyctis. The potential of resurrection of Euphlyctis seistanica due to distinct genetic population in Iran is discussed; this lineage appears to be genetically rather similar to E. kalasgramensis, and the species distinctness of these two lineages requires further study. The validity of E. kalasgramensis is also discussed in the context of the historically earlier nomina, Rana bengalensis and Rana leschenaultii due to distribution range overlaps. The prospects of establishing either Rana cyanophlictis variety fulvus or Rana cyanophlictis variety flavens from Sri Lanka are also mentioned. Based on a comparative account, we report the discovery of a new species of skittering frog Euphlyctis kerala sp. nov. which has a restricted distribution in the western coastal plains of India, south of the Palghat gap.

 Keywords: Coastal Plains, Euphlyctis, Morphological groups, Palghat gap, Skittering Frog, Synonyms, Western Ghats, Amphibia



 Euphlyctis kerala sp. nov.


K.P. Dinesh, B.H. Channakeshavamurthy, P. Deepak, Avrajjal Ghosh and Kaushik Deuti. 2021.  Morphological Groupings within Euphlyctis (Anura: Dicroglossidae) and Description of A New Species from the Surroundings of Thattekad Bird Sanctuary, Kerala, India. Zootaxa. 4990(2); 329–353. DOI: 10.11646/zootaxa.4990.2.7

Monday, June 21, 2021

[Herpetology • 2021] Metlapilcoatlus borealis • Molecular Phylogenetics and Morphometrics Reveal A New Endemic Jumping Pitviper (Serpentes: Viperidae: Crotalinae) from the Sierra Madre Oriental of Mexico


Metlapilcoatlus borealis
Tepos-Ramírez, Flores-Villela, Velasco, Lara, Rubio & Jadin, 2021


Abstract
The jumping pitvipers of the genus Metlapilcoatlus are generally associated with montane environments and are widely distributed from central and southern Mexico to Panama. In this study, we analyzed the phylogenetic position and compared the morphology of a population from the Sierra Madre Oriental, within the Sierra Gorda Biosphere Reserve, to other species of jumping pitvipers. We implemented two mtDNA gene fragments (cyt b and ND4) of 50 specimens of the five Metlapilcoatlus species for phylogenetic reconstruction using Bayesian inference and maximum likelihood. We used a linear discriminant analysis and comparative statistics of external and hemipenial characters to assess the morphological differences among Metlapilcoatlus lineages. Our analyses support a strong genetic and morphological distinction of Metlapilcoatlus nummifer populations established to the north of the Trans-Mexican Volcanic Belt (Hidalgo, Northern Veracruz, and Querétaro) from other Metlapilcoatlus taxa. Based on this evidence we describe the populations from the north as a new species.



the holotype of Metlapilcoatlus borealis [MZFC-35381]
from the locality of San Juan de los Durán, in Jalpan de Serra, Querétaro. 
 
  Photographs by Óscar Flores-Villela (A) and Mauricio Tepos Ramírez (B and C).


Metlapilcoatlus borealis sp. nov. 
 
Etymology.— The specific epithet, borealis, references the northernmost distribution of this taxon with respect to the other taxa of Metlapilcoatlus.




Mauricio Tepos-Ramírez, Oscar Flores-Villela, Julián A. Velasco, Carlos Pedraza Lara, Oscar R. García Rubio and Robert C. Jadin. 2021. Molecular Phylogenetics and Morphometrics Reveal A New Endemic Jumping Pitviper (Serpentes: Viperidae: Metlapilcoatlus) from the Sierra Madre Oriental of Mexico. Journal of Herpetology. 55(2); 181-191. DOI: 10.1670/20-028

[Entomology • 2021] Compsodactylus mendax Compsodactylus Fuhrmann, 2012 (Coleoptera: Scarabaeidae: Melolonthinae): Distributional Notes and A New Species


Compsodactylus mendax Fuhrmann & Smith


Abstract
A new species of Compsodactylus Fuhrmann, 2012 (Coleoptera: Scarabaeidae: Melolonthinae: Macrodactylini) is described from Peru. New provincial records for Compsodactylus argentinus (Moser, 1919) are detailed for Argentina: Córdoba and Misiones. A revised key to Compsodactylus species is presented.

Key words: Macrodactylini, Argentina, Peru, Neotropics, taxonomy


Compsodactylus mendax new species;
1−5, male holotype (dorsal, dorsolateral, lateral, dorsofrontal, label);
6−8, female allotype (dorsal, dorsolateral, lateral).
Scale = 1.0 mm.


Compsodactylus mendax Fuhrmann & Smith, new species

Diagnosis. Length greater than 8.0 mm; dorsal surface with metallic green reflections; antennae with 10 antennomers; clypeus elongate with expanded apex in males (Fig. 4); clypeus with short, spiny setae along apex and lateral edges in males; apex of protarsomere I 2 times wider than apex of protarsomere II in males; elytral striae distinctly punctate; male metatibial apex with an inner truncate, twisted process (Fig. 16); genitalia of females with gonostyle, and gonocoxite about 2.5 times longer than wide (Figs. 23−25).

Etymology. From the Latin mendax meaning liar, in reference to the elongate clypeus being reminiscent of Pinocchio’s nose. This name is a noun in apposition.


  Juares Fuhrmann and Andrew B. T. Smith. 2021. Compsodactylus Fuhrmann, 2012 (Coleoptera: Scarabaeidae: Melolonthinae): Distributional Notes and A New Species. Zootaxa. 4990(2); 387–393. DOI: 10.11646/zootaxa.4990.2.12