Tuesday, April 30, 2019

[Botany • 2019] Gymnosiphon philippinensis (Burmanniaceae) • A New Species from Cebu, Philippines

Gymnosiphon philippinensis Pelser, Salares & Barcelona

in Pelser, Salares & Barcelona, 2019.

Gymnosiphon philippinensis is described as a new species of Burmanniaceae from forest over limestone in southern Cebu (Philippines). Among Malesian Gymnosiphon, it is most similar to G. papuanus and G. pauciflorus in having flowers with stamens that are attached in the middle of the floral tube and having outer tepals with entire margins, but these tepals are longer in absolute and relative lengths than those of the aforementioned species. Gymnosiphon philippinensis is the first species of Gymnosiphon reported from the Philippines.

Keywords: Achlorophyllous mycoheterotroph, Alcoy, Nug-as, saprophyte, taxonomy, Monocots


Gymnosiphon philippinensis Pelser, Salares & Barcelona sp. nov.

Pieter B. Pelser, Val B. Salares and Julie F. Barcelona. 2019. Gymnosiphon philippinensis, A New Species of Burmanniaceae from Cebu, Philippines. Phytotaxa. 402(1); 68-72. DOI: 10.11646/phytotaxa.402.1.10


[Entomology • 2018] Paraplangia sinespeculo • A New Genus and Species of Bush-cricket, with Notes on its Biology and A Key to the Genera of Phaneropterinae (Orthoptera: Tettigonioidea) from Madagascar

Paraplangia sinespeculo  Heller

in Heller, Hemp, Massa, et al., 2018.

Madagascar is a well-known hotspot of biodiversity. However, many Orthoptera, and especially the Tettigonioidea, belong to little-studied groups. Here we describe a new genus and species of bush-cricket reared from field-collected eggs. Paraplangia sinespeculo gen. nov., sp. nov. belongs to Phaneropterinae and shares diagnostic characteristics with members of the tribe Amblycoryphini and its African subtribe Plangiina stat. nov. Paraplangia, which has a chromosome number of 31 X0, differs from other African members of the tribe and subtribe such as Eurycorypha and Plangia, which both have 29 X0. In addition to morphology, we describe the male calling song, female acoustic response, and mating behavior. As calling song, the male produces two series of short syllables. At the end of the second series the female responds with signals of similar duration and spectral composition as the male sounds (peak about 8-9 kHz). To make future identification easier, a key to all genera of Phaneropterinae found in Madagascar is presented.

Key words: Amblycoryphini, bioacoustics, chromosomes, duetting, Orophus

Figure 1. Habitus. A. Adult male; B. Egg (lateral and ventral view, scale 5 mm); C. Nymph, 3rd March; D. Nymph, 30th March; E. Female nymph, 10th May, 10 days before imaginal molt.

Paraplangia Heller, gen. n.

Derivatio nominis: Para, Greek = nearby; Plangia, another Plangiina genus. Paraplangia feminine.

Paraplangia sinespeculo Heller, sp. n.

Derivatio nominis: Sinespeculo (Latin = without mirror). To be treated as noun in the nominative singular.

 Klaus-Gerhard Heller, Claudia Hemp, Bruno Massa, Maciej Kociński and Elżbieta Warchałowska-Śliwa. 2018. Paraplangia sinespeculo, A New Genus and Species of Bush-cricket, with Notes on its Biology and A Key to the Genera of Phaneropterinae (Orthoptera: Tettigonioidea) from Madagascar.  Journal of Orthoptera Research. 27(2): 143-153. DOI:  10.3897/jor.27.24243

[Herpetology • 2019] Taxonomic Status of Apostolepis barrioi Lema, 1978, with Comments on the Taxonomic Instability of Apostolepis Cope, 1862 (Serpentes, Dipsadidae)

Apostolepis dimidiata (Jan, 1862)

in Entiauspe-Neto, de Sena, Tiutenko & Loebmann, 2019. 

Apostolepis is a diverse neotropical snake genus, which has been historically subjected to poor taxonomic descriptions, largely based on either a small type series or subjective diagnoses. We evaluate the case of Apostolepis barrioi Lema, 1978 and its intricate taxonomic history, suggesting its synonymization with Apostolepis dimidiata (Jan, 1862), and providing brief commentary on the taxonomic instability that has been plaguing the genus.

Keywords: Elapomorphini, Neotropical, synonymy, taxonomy

Figure 1. Dorsal, lateral and ventral illustrations of previously recognized taxa, Apostolepis dimidiata (A) and A. barrioi (B), according to the diagnoses of Cabral et al. (2017). However, these represent merely phenotypic variations of A. dimidiata and, according to the descriptions of Jan (1862) and Lema (1978), both holotypes of A. barrioi and A. dimidiata present the bottom coloration.

 Omar Machado Entiauspe-Neto, Arthur de Sena, Arthur Tiutenko and Daniel Loebmann. 2019. Taxonomic Status of Apostolepis barrioi Lema, 1978, with Comments on the Taxonomic Instability of Apostolepis Cope, 1862 (Serpentes, Dipsadidae).  ZooKeys. 841: 71-78. DOI: 10.3897/zookeys.841.33404

[Entomology • 2019] Theorica valuliae • the First Record of the Genus (Lepidoptera: Tortricidae: Olethreutinae) in Thailand

Theorica valuliae Pinkaew

in Pinkaew & Muadsub, 2019.

The genus Theorica Diakonoff, 1966 includes two previously described species that occur in Vietnam (i.e., T. secunda Kuznetsov, 1997) and New Guinea (i.e., T. lamyra (Meyrick, 1911)). We report the first occurrence of this genus in Thailand, represented by a new speciesTheorica valuliae Pinkaew, n. sp. In addition to illustrations of the adult and genitalia, we also present photographs of living specimens in their natural resting posture.

Keywords: new species, taxonomy, Olethreutini, Thailand, Lepidoptera

 Theorica valuliae, Living adult on substrate.

FIGURES 3–4. Theorica valuliae, adult (scale bars = 2 mm). 3. Male (Holotype) 4. Female (Paratype).

Theorica valuliae Pinkaew, n. sp.  

Diagnosis. The male of this species is most similar to that of Theorica secunda Kuznetsov in having a modified hindwing with a tube-like anal lobe separated from the anal margin at the base of the wing. The two species differ in the ground color of the forewing: grayish brown in T. secunda and pinkish red in T. valuliae. The male genitalia of T. valuliae are most similar to those of T. lamyra (Meyrick, 1911), but the socii are covered with twisted setae in T. valuliae and straight setae in T. lamyra. The female genitalia of the new species is distinct from other species by having a very short ductus bursae with the corpus bursae reaching only slightly beyond the anterior margin of sternum VII. Moreover, the moth in resting posture has a distinct heart-shape and a dark brown V-shaped mark crossing both wings (Fig. 2).

Etymology. The specific epithet is a patronym dedicated to the late Associate Professor Valuli Rojanavongse, who served as the Master's degree advisor for the first author. 

Distribution. Thailand. Specimens were collected in both natural forest (evergreen and dry evergreen forest) and reforest areas.

 Nantasak Pinkaew and Sopita Muadsub. 2019. Theorica valuliae Pinkaew, new species (Lepidoptera: Tortricidae: Olethreutinae), the First Record of the Genus in Thailand. Zootaxa. 4590(4); 487–494. DOI: 10.11646/zootaxa.4590.4.5

[Entomology • 2019] Katara connexa Hidden European Diversity: A New Monotypic Hoverfly Genus (Diptera: Syrphidae: Eristalinae)

Katara connexa Vujić & Radenković

in Vujić, Ståhls & Radenković, 2019. 

For the first time in more than 30 years, a new European hoverfly genus has been discovered, Katara gen. nov. Its type species Katara connexa sp. nov. (Diptera: Syrphidae) is described from the Pindos Mountains (Greece), and the systematic position of the monotypic taxon within the tribe Rhingiini is analysed using morphological and molecular data. Phylogenetic analyses resolved Katara connexa gen. et sp. nov. as sister taxon to Pelecocera latifrons. We assert based on the molecular phylogenetic results and the morphological distinctness of Pelecocera latifrons that this taxon merits a generic rank, thus we erect the genus Pseudopelecocera gen. nov. and also place Pelecocera persiana in this new genus based on shared characteristics. Based on our results, we place Chamaesyrphus in subgeneric rank and as a sister group to the nominal subgenus Pelecocera. We provide an identification key to the Rhingiini genera. Our phylogenetic analyses recovered all speciose Rhingiini genera as monophyletic and support existence of three main lineages within the tribe: (1) genus Rhingia with two groups, Palaearctic+Neotropical and Afrotropical taxa, (2) genus Cheilosia with its subgenera, and (3) lineage with remaining genera (Pseudopelecocera gen. nov., Katara gen. nov., Ferdinandea, Psarochilosia, Psarus, Portevinia and Pelecocera).

Keywords: Katara connexa, new genus, new species, Pelecocera latifrons, Pindos Mountains, Pseudopelecocera

Figure 9. Katara connexa Vujić & Radenković sp. nov., male, lateral view. Scale in mm.

Family Syrphidae Latreille, 1802 
Tribe Rhingiini Meigen, 1822 

Genus Katara Vujić & Radenković gen. nov.

Etymology: The new genus is named based on type locality, an area between Katara pass and Kampos Despoti, in PindosMountains, central Greece. Word ‘Katara’ is latinized from the Greek word ‘Kataras’. The name is to be considered as feminine. It means ‘curse’ in Greek language, indicating the dangerous high mountain pass.

Katara connexa Vujić & Radenković sp. nov.

Etymology: The new species is named according to the Latin word ‘connexa’ indicating the connection of the taxon to the other taxa of the tribe based on its characters. It is the participle of the verb ‘connecto’ in the nominative singular and agrees in feminine gender with the corresponding genus name.

Ante Vujić, Gunilla Ståhls and Snežana Radenković. 2019. Hidden European Diversity: A New Monotypic Hoverfly Genus (Diptera: Syrphidae: Eristalinae: Rhingiini). Zoological Journal of the Linnean Society. 185(4); 1188–1211.  DOI: 10.1093/zoolinnean/zly066

Monday, April 29, 2019

[Herpetology • 2019] Ahaetulla laudankia • A New Species of Ahaetulla Link, 1807 (Colubridae: Ahaetullinae) from India

Ahaetulla laudankia 
Deepak, Narayanan, Sarkar, Dutta & Mohapatra, 2019

Laudankia Vine Snake  || DOI: 10.1080/00222933.2019.1589591 

A new species of vine snake of the genus Ahaetulla is described from peninsular India. The new taxon is a medium-sized arboreal snake, readily distinguished from all other congeners by morphological and genetic differences. The new species appears to be widely distributed in Eastern Ghats and Central India with the western-most distribution extending into eastern Rajasthan. However, it is relatively rare, with only three specimens being acquired over the past nine years.

KEYWORDS: Ahaetulla nasuta, Eastern Ghats, Rajasthan, snake, taxonomy

.Ahaetulla laudankia sp. nov.
Paratype sub-adult male (ZSI-R-26412) from Madhapur, Boudh district, Odisha state. 

Ahaetulla laudankia sp. nov. 
Dryophis mycterizans – Sclater (1891) [in part
Ahaetulla nasuta isabellinus – Dutta et al. (2009) 

Etymology. The specific epithet, laudankia, refers to the vernacular name of the species in Odia (language spoken in Odisha state of India), alluding to the snake’s resemblance to dried stems (‘danka’) of bottle gourd (‘lau’).

Proposed standard English name: Laudankia Vine Snake

V. Deepak, Surya Narayanan, Vivek Sarkar, Sushil K. Dutta and Pratyush P. Mohapatra. 2019. A New Species of Ahaetulla Link, 1807 (Serpentes: Colubridae: Ahaetullinae) from India. Journal of Natural History. 53(9-10); 497-516. DOI: 10.1080/00222933.2019.1589591  


[Entomology • 2019] Recurvidris lekakuli • A New Species of the Ant Genus Recurvidris Bolton, 1992 (Hymenoptera, Formicidae, Myrmicinae) from Thailand

Recurvidris lekakuli
Jaitrong, Tokeeree & Pitaktunsakul, 2019

Recurvidris Bolton, 1992 is a small myrmicine genus of the tribe Crematogastrini. Until now, eleven species are known in this genus from Asia. A new species, Recurvidris lekakuli sp. n., is here described from Thailand based on the worker caste. The type series of the new species was collected from leaf litter in a dry evergreen forest. A key to the Asian species of Recurvidris based on the worker caste is provided.

Keywords: Formicidae, ants, Recurvidris, new species, taxonomy, Thailand

Figures 1–5.  Recurvidris lekakuli sp. n., holotype worker (THNHM-I-01219)
1 body in profile 2 head in full-face view 3 body in dorsal view 4 mesosoma, petiole and postpetiole in profile 5 right mandible showing mandibular dentition.

 Recurvidris lekakuli sp. n.

Diagnosis: Head in full-face view round, almost as long as broad; masticatory margin of mandible with four sharp teeth, fourth (basal) tooth almost as large as third tooth; basal margin with a small tooth; propodeal declivity lacking infradental lamella or ridge linking propodeal spine to metapleural lobe; head, promesonotum, propodeum, petiolar node, postpetiole and gaster entirely smooth and shiny; mesopleuron and peduncle of petiole superficially reticulate with slightly smooth and shiny interspaces; propodeal dorsum with a pair of very short appressed hairs in front of spiracles.

Figure 6. Type locality of Recurvidris lekakuli sp. n. at Ban Sahakhon Nikhom, Kanchanaburi Province, Thong Phaphum District, West Thailand, dry evergreen forest.

Etymology: The specific name is dedicated to the late Dr. Boonsong Lekakul, who was the most excellent specialist in zoological sciences in Thailand and helped and inspired many young biologists.
Bionomics: The type series was collected from leaf litter on the forest floor in a dry evergreen forest (Figure 6) near a stream.

Distribution: Recurvidris lekakuli has been known only from the type locality. The most closely related species, R. chanapaithooni was recorded from eastern and southern Thailand (Jaitrong and Wiwatwitaya 2015). This species is very probably sympatric with R. lekakuli in at least the dry evergreen forest in western and/or southern Thailand.

 Weeyawat Jaitrong, Yuppayao Tokeeree and Piyaporn Pitaktunsakul. 2019. A New Species of the Ant Genus Recurvidris Bolton, 1992 (Hymenoptera, Formicidae, Myrmicinae) from Thailand.  ZooKeys. 830: 53-61.  DOI: 10.3897/zookeys.830.31147

[Entomology • 2019] Pharaxonotha cerradensis • A New Species of Pharaxonotha Reitter (Coleoptera: Erotylidae) from central South America

Pharaxonotha cerradensis 
Skelley & Segalla, 2019

Pharaxonotha cerradensis, new species (Coleoptera: Erotylidae), is described from Bolivia and Brazil. It belongs in a complex of species from Mexico and Central America that radiated on host cycads of the genus Zamia L. (Cycadales: Zamiaceae) and is associated with Zamia boliviana (Brongniart) A. DC. (Cycadales: Zamiaceae). Pharaxonotha cerradensis is compared with other species of Pharaxonotha Reitter.

Keywords: Neotropical, Cerrado, Cucujoidea, Pharaxonothinae, host plants, Coleoptera

FIGURES 1–6. Pharaxonotha cerradensis new species, paratype [BOLIVIA: Santa Cruz, Portrerillos del Guenda, 40 km. NW Santa Cruz de la Sierra, ...]:
 1) dorsal habitus; 2) ventral habitus; 3) lateral habitus; 4) head and prothorax, ventral view. Antenna: 5) P. cerradensis; 6) Pharaxonotha sp. (nr. P. confusa Pakaluk) [Costa Rica: Osa Peninsula, ex Zamia fairchildiana].
 Figures 5–6 to same scale.

FIGURES 11–12. Zamia boliviana plants. 11) Female plant with seeds in development. 12) Male plant, a) fresh strobili, b) same, close-up showing Pharaxonotha cerradensis new species on host.

Pharaxonotha cerradensis Skelley and Segalla, new species

Diagnosis. Pharaxonotha cerradensis can be distinguished from other members of the genus by the pronotal anterior angles being rounded, antennomeres VII and VIII each with width = length, pronotal and elytral setae short and not reaching next puncture, protibia narrowly triangular with a distinct apical lateral tooth, and pronotal disc with distinct sulcus at base on each side. Pharaxonotha cerradensis is readily distinguished from all other species of Pharaxonotha by its enlarged antennomere XI, 1.6× longer than antennomere X. In addition, this is the only member of the genus known to occur in central South America on the host cycad Zamia boliviana. 

Etymology. The host cycad of this beetle occurs in the biome known as the Cerrado in Brazil and Savanna in Bolivia. The species epithet cerrad-ensis means “of the Cerrado”.

 Paul E. Skelley and Rosane Segalla. 2019. A New Species of Pharaxonotha Reitter (Coleoptera: Erotylidae) from central South America. Zootaxa. 4590(1); 184–190. DOI: 10.11646/zootaxa.4590.1.9

[Fungi • 2019] The Lichen Family Teloschistaceae in the Altai-Sayan Region (Central Asia)

Rusavskia sp. 1 (Vondrák 18102) with Xanthoria-like flat lobes.

in Vondrák, Frolov, Davydov, et al., 2019.
(bar = 1 mm.) 

Within the Altai-Sayan region, we identified 103 species of Teloschistaceae from 1193 field records supported by herbarium vouchers. The recorded species belong to the subfamilies Xanthorioideae (46 species in 14 genera) and Caloplacoideae (57 species in 17 genera); Teloschistoideae is absent. We divided the 194 surveyed localities into four categories: arid alpine, arid non-alpine, humid alpine, humid non-alpine. Each category has a specific lichen composition and a typical combination of traits. Humid non-alpine localities are mostly inhabited by broadly distributed boreal-montane species; humid alpine sites by arctic-alpine lichens; arid non-alpine habitats are preferred by xerophilous Eurasian species and arid alpine sites by xerophilous Central Asian species with (presumably) large geographic ranges in dry continental Asia. Some arid alpine species have a thick crustose thallus with a very thick medulla and cortex; this morphological trait is confined to the Central Asian group of lichens and is absent from other climatic regions, such as arctic, boreal or oceanic Eurasia. We compared species diversity in the Altai-Sayan region with the Alps. Both regions differ in species and generic composition and the richness is higher in the latter.

Taxonomy: Caloplaca fluviatilis is newly described. New combinations are Pachypeltis insularis, P. pachythallina, P. phoenicopta and Variospora sororicida. Two of Magnusson’s names are newly synonymized: Caloplaca infestans with Pachypeltis intrudens and Caloplaca kansuensis with C. bicolor. In addition to 22 known genera, we define, provisionally, 9 groups of species that may merit recognition as genera. Caloplaca epithallina is provisionally placed in Shackletonia, but we do not formally publish a new combination. Lichenicolous Pachypeltis phoenicopta and Variospora sororicida are less host-specific than originally thought.

Floristics: Caloplaca pratensis is new to Eurasia, Caloplaca helygeoides (= C. diphyodes auct.), C. monacensis and C. soralifera are new to Asia. 12 species are new to Russia, 9 new to Siberia, 9 new to China, 2 new to Kazakhstan, and 2 new to Xinjiang. Outside the studied region Pachypeltis phoenicopta is new to Europe (Spain, Sierra Nevada) and we report the first reliable record of Pachypeltis insularis from Greece (Mt Olympus).

Rusavskia sp. 1 (Vondrák 18102) with Xanthoria-like flat lobes.
(bar = 1 mm.)

 Jan Vondrák, Ivan Frolov, Evgeny A. Davydov, Lidia Yakovchenko, Jiří Malíček , Stanislav Svoboda and Jiří Kubásek. 2019. The Lichen Family Teloschistaceae in the Altai-Sayan Region (Central Asia). Phytotaxa. 396(1); 1–66. DOI: 10.11646/phytotaxa.396.1

[Herpetology • 2019] Psammophylax ocellatus & P. ansorgii • Rediscovery, Taxonomic Status, and Phylogenetic Relationships of Two Rare and Endemic Snakes (Lamprophiidae: Psammophiinae) from the southwestern Angolan Plateau

Psammophylax ocellatus Bocage, 1873

in Branch, Baptista, Keates & Edwards, 2019.

Two rare and endemic psammophines (Serpentes: Psammophiinae) occur in Angola. The taxonomic status of Psammophylax rhombeatus ocellatus Bocage, 1873 and Psammophis ansorgii Boulenger, 1905 have long remained problematic, with both having varied past and present taxonomic assignments, and whose distributions may therefore present zoogeographic anomalies. Little was known of their biology, habitat associations, or phylogenetic relationships. New material was collected during biodiversity surveys of the Humpata Plateau, near Lubango, Angola. It allowed fuller descriptions of scalation and live coloration for both species, and resolution of their taxonomic status. Genetic analysis confirms that both are distinct at the specific level. In addition, within Psammophis, Jalla’s Sand Snake (Psammophis jallae Peracca, 1896), of which P. rohani Angel, 1925, remains a synonym, is sister to P. ansorgii, and Boulenger’s comment on similarities with P. crucifer are not supported. The status of an unusual skaapsteker from Calueque, Cunene Province, Angola, is discussed and its assignment to Ps. ocellatus is provisional and requires additional material for taxonomic resolution. The new P. ansorgii records from Tundavala represent a range (+400 km southwest) and altitude (1800 m to 2286 m a.s.l) extension from the previous only known precise locality of Bela Vista (= Catchiungo), Huambo Province, whilst that for Ps. ocellatus doubles the known altitude from 1108 m to 2286 m a.s.l and extends the range about 122 km to the northwest from historical material from the plateau of Huíla and Cunene provinces.

Keywords: Psammophis ansorgiiPsammophylax ocellatus, new distribution, phylogenetic relationships, Angolan escarpment, montane grassland, Reptilia

William R. Branch, Ninda Baptista, Chad Keates and Shelley Edwards. 2019. Rediscovery, Taxonomic Status, and Phylogenetic Relationships of Two Rare and Endemic Snakes (Serpentes: Psammophiinae) from the southwestern Angolan Plateau. Zootaxa. 4590(3); 342–366. DOI: 10.11646/zootaxa.4590.3.2

[Herpetology • 2019] Stegonotus ayamaru • A New Species of Indo-Papuan Groundsnake, Genus Stegonotus Duméril et al., 1854 (Serpentes, Colubridae), from the Bird’s Head Peninsula of West Papua, Indonesia, with Comments on Differentiating Morphological Characters

Stegonotus ayamaru
C.M. Kaiser, O'Shea & Kaiser, 2019

We describe a new species of Indo-Papuan groundsnake (Stegonotus) from a single adult male specimen collected in 1953 near Kamro, a village in Maybrat Regency, West Papua, Indonesia. The specimen had been considered a member of S. batjanensis, a well-defined species from the northern Maluku Islands over 500 km to the northwest with which it shares the key characteristic of having the 3rd, 4th, and 5th supralabial scales touching the eyes. The new species can be differentiated from S. batjanensis as well as all other species of Stegonotus by having its 5th supralabial scale projecting forward from behind the eye to form a narrow contact zone with the eye. In addition, it is differentiated by the combination of the following characteristics: seven supralabials, the 3rd–5th touching the eye; eight infralabials, the 1st–4th touching the anterior genial; four scales separating the posterior genial and the first gastrostege; dorsal scales in 17 rows, diminishing to 15 posteriorly; a low number of ventrals (181 in the holotype) combined with a high number of subcaudals (105 in the holotype), the latter comprising 37% of the scales on the ventral surface, the highest proportion in the genus. The description of this species is of interest beyond adding to the species diversity of Stegonotus: it allowed us to explore additional characteristics to resolve taxonomic questions in a morphologically conservative genus, it illustrates the need for additional herpetological survey work on the Bird’s Head Peninsula, and its initial misidentification serves as a reminder of the continued relevance and importance of natural history collections as repositories for specimens and data that influence our knowledge today by reaching out from the past.

Keywords: groundsnake, Stegonotus, new species, Bird’s Head Peninsula, West Papua, Indonesia, New Guinea, Reptilia

Head of Stegonotus ayamaru sp. nov. (holotype, RMNH 31199)

Stegonotus ayamaru sp. nov. 
Ayamaru Groundsnake

Etymology. The species name ayamaru is a noun in apposition. It references the Ayamaru people of Maybrat Regency, West Papua, Indonesian New Guinea and their homonymic language. We select this name not only to indicate the type locality but also to highlight the Ayamaru people’s struggle to protect their forests and waterways from exploitation. The Ayamaru Lakes are a case in point. One of the several endemic fishes in the lake (Melanotaenia boesemani) has been over-collected and is currently listed as Endangered on the IUCN Red List (Allen 1996). West Papua was recently declared a conservation province (Anonymous 2018), and it is hoped that this will have a long-term, positive effect on regional development.  

Christine M. Kaiser, Mark O'Shea and Hinrich Kaiser. 2019. A New Species of Indo-Papuan Groundsnake, Genus Stegonotus Duméril et al., 1854 (Serpentes, Colubridae), from the Bird’s Head Peninsula of West Papua, Indonesia, with Comments on Differentiating Morphological Characters. Zootaxa. 4590(2); 201–230.  DOI: 10.11646/zootaxa.4590.2.1

[Botany • 2019] Argyreia decemloba (Convolvulaceae) • A New Species of Argyreia from Chin State, Myanmar

Argyreia decemloba
 Traiperm, Fujikawa & Staples

in Traiperm, Fujikawa, Chitchak, et al., 2019. 

Argyreia decemloba Traiperm, Fujikawa & Staples, a new species of Convolvulaceae from Natma Taung National Park, Chin State, Myanmar, is described here with detailed illustrations and summaries for its distribution, ecology and IUCN conservation status. This new species is a high-climbing twiner that can be distinguished by a white or pale yellow corolla with a deep red or purple-black colour inside at the base of the tube, a ten-lobed corolla limb, and staminal filament bases expanded and densely covered by hispid hairs. Argyreia decemloba is here assessed as Near Threatened (NT) following IUCN Red List categories.

KEYWORDS: Argyreia, Chin State, Convolvulaceae, filament morphology, Mount Victoria, Myanmar, Natma Taung, new species discovery, SE Asian biodiversity, staminal trichomes, taxonomy

Fig. 1. Argyreia decemloba – A: stem with leaves and inflorescences; B: secondary veins at first run beside midvein on adaxial leaf surface; C: adaxial leaf surface; D: abaxial leaf surface; E: inflorescence bracts, outer (left) to inner (right); F: abaxial bract surface, showing 2 trichome types; G: 5 sepals from outer (left) to innermost (right); H: opened corolla with 5 stamens; I: single stamen; J: pistil, showing undulate disk and biglobose stigma; K: filament insertion showing dense covering of straight, hispid trichomes; L: fruits (right) and fruit with sepals (left); M: seeds in side view (left) and top view (right). – All drawn by N. Chitchak from voucher specimens Fujikawa & al. 95008 (QBG) (A–K), Kuroiwa & al. 30480 (MBK) (L–M).

Argyreia decemloba Traiperm, Fujikawa & Staples, sp. nov.  

Holotype: Myanmar, Chin State, Mindat Township, ...

Diagnosis — Three species of Argyreia are known to have a white or pale yellow corolla with a deep red or purple-black colour inside at the base of the tube as well as a 10-lobed limb: A. barbata (Wall.) Raizada; A. maymyensis (Lace) Raizada; and A. decemloba (Table 1). Argyreia barbata and A. maymyensis have quite narrow, linear inflorescence- and floral bracts that do not cover up the calyx and corolla base; the hispid-hirsute indumentum of A. barbata, composed of dense, bristly hairs may obscure the floral organs underneath. In contrast, A. decemloba has broad, laminar inflorescence- and floral bracts that cover the floral organs underneath; the abaxial surface of the bracts has a completely different, dimorphic indumentum composed of two different trichome types (Table 1).

Fig. 2. Argyreia decemloba inflorescence and corolla details
– A, B: plant habit (voucher: Fujikawa & al. 95008); C: flower in frontal view, showing 10-lobed corolla limb, included genitalia, and reddish interior of corolla tube; D: inflorescence and flower in lateral view, showing capitate inflorescence with short, thick peduncle, overlapping whitish bracts, and triangular-funnelform corolla shape (voucher: Fujikawa & al. 94296). – All photographs by C. Maknoi.

Distribution and ecology — So far known only from Chin State, Myanmar, occurring at elevations of (740–)1025–1200(–1530) m. A high-climbing twiner in trees and shrubs inhabiting open, sunny places such as roadsides, footpaths in secondary forest, edges of deciduous forest, clearings in evergreen forest, and in semi-evergreen forest; preferring moist soils along streams or the banks of rivers. The soil type has not been reported.

Etymology — The specific epithet recognizes the distinctive 10-lobed corolla limb.

Paweena Traiperm, Kazumi Fujikawa, Natthaphong Chitchak, Prachaya Srisanga, Charun Maknoi and George Staples. 2019. A New Species of Argyreia (Convolvulaceae) from Myanmar. Willdenowia.  49(1); 65–70.  DOI: 10.3372/wi.49.49108