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Sunday, January 15th, 2023
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| 12:15p | [Diplopoda • 2023] Spirobolus akamma • Taxonomic Assessment of A Threatened Large Millipede Endemic to the Southern Ryukyu Islands, Japan: A New Species of Spirobolus (Spirobolida: Spirobolidae) from the Yaeyama Islands
Abstract The taxonomic status of millipedes of the genus Spirobolus Brandt, 1833, referred to as “Yaeyama-maruyasude” from the Yaeyama Islands, Ryukyu Islands, Japan, was unresolved. We assess the taxonomic status of these Yaeyama Spirobolus sp. using an integrated morphological and molecular approach, and describe them as a new species, Spirobolus akamma sp. nov., for which partial sequences of the nuclear 28S ribosomal RNA, mitochondrial cytochrome c oxidase subunit I, and 16S ribosomal RNA markers are provided. This new species differs from continental China and Taiwan endemic congeners in anterior gonopod morphology (in having an elongate and subtriangular coxa, and a pentagonal mesal sternal process), posterior gonopod morphology (in having a coronoid prefemoral endite with rounded distal end, and an elongate telopodite), and in having four serrations on the cyphopod lateral flange. Keywords: Myriapoda, Juliformia, arboreal, threatened species, SEM images
Taxonomy Family Spirobolidae Bollman, 1893 Genus Spirobolus Brandt, 1833 Spirobolus akamma sp. nov. [Japanese name: Yaeyama-maruyasude] Etymology. The specific name akamma is derived from the Yaeyama folk tale “赤馬” (Akamma means “red horse” and is the name of the horse beloved by the protagonist), and thus is treated as indeclinable. Taiga Kato, Mitsuo Takano, Takafumi Nakano and Satoshi Shimano. 2023. Taxonomic Assessment of A Threatened Large Millipede Endemic to the Southern Ryukyu Islands, Japan: A New Species of Spirobolus (Diplopoda: Spirobolida: Spirobolidae) from the Yaeyama Islands. Species Diversity. 28(1); 23-30. DOI: 10.12782/specdiv.28.23 | ||||||||||
| 4:04p | [Botany • 2022] Christisonia flavirubens (Orobanchaceae) • A New Species from south Western Ghats, India
ABSTRACT Christisonia flavirubens J.Mathew & P.M.Salim (Orobanchaceae), a new holoparasitic plant species from the southern Western Ghats, Kerala, India, is described based on morphological data. The diagnostic morphological characters, distribution and images of the new species are presented. Images and comparative characters of the reddish yellow coloured Christisonia species of the south Western Ghats are also provided for its easy identification. KEYWORDS: holoparasitic plant, India, Kerala, new species, Strobilanthes, taxonomy
  Christisonia flavirubens J.Mathew & P.M.Salim Diagnosis: Christisonia flavirubens is morphologically similar to C. mira (Fig. 2) especially in the reddish yellow flower colour and host specificity. However this new taxon differs in: anthers of equal length to filaments, 0.6-0.7 mm long, yellow in colour, hairs present at the base of the filaments (vs. anther filaments are 3-4 times longer than anther lobes, 2.5-3 cm long, light purplish in colour, glandular hairs present throughout the filaments in C. mira); both anther locules having fertile pollens (vs. one anther locule has fertile pollen and the other one is sterile in C. mira) and spur originating from the connective and having same length of anthers (vs. spur originating from the sterile locule and having double size of the anthers in C. mira). Distinguishing characters from other reddish yellow coloured species of Christisonia found in the south Western Ghats are listed in Table 1. Pollen viability of both locules of anther the anther is an interesting character among Christisonia. Apart from this, Christisonia subacaulis is the only known Indian species having this peculiarity. However, C. subacaulis can be easily distinguished by the violet colour corolla and didynamous conditions of the stamen. Etymology: The epithet (‘flavirubens’) is used to indicate the reddish yellow colour of the corolla in this taxon. Jose Mathew and Pichan M. Salim. 2022. Christisonia flavirubens (Orobanchaceae), A New Species from south Western Ghats, India. Biodiversity: Research and Conservation (Biodiv. Res. Conserv.). 68; | ||||||||||
| 4:05p | [Botany • 2023] Mitrephora langsuanensis, M. sirindhorniae & M. sukhothaiensis (Annonaceae) • Three New Species of Mitrephora from Thailand
Abstract Three new Mitrephora species (Annonaceae), M. langsuanensis sp. nov., M. sirindhorniae sp. nov. and M. sukhothaiensis sp. nov., are described from Thailand. Mitrephora langsuanensis resembles M. macclurei, but its leaves have more secondary veins, and its flowers have more carpels, with yellow-and-pink striped outer petals with a margin that becomes undulate with age. Mitrephora sirindhorniae resembles M. tomentosa, but has larger sepals and petals, longer flowering pedicels, and shorter monocarp stipes, with monocarps that have a longitudinal ridge. Mitrephora sukhothaiensis is distinct from its Thai congeners in having outer petals that reflex at maturity and inner petals with a pair of appendages on the margin adaxially. The addition of these three new taxa raises the total number of Mitrephora species in Thailand to 14. An identification key for Thai species is provided. Keywords: Annonaceae, Mitrephora langsuanensis, Mitrephora sirindhorniae, Mitrephora sukhothaiensis, new species, Thailand
Mitrephora langsuanensis Leerat., Chalermglin & R.M.K.Saunders, sp. nov. Diagnosis: Mitrephora langsuanensis is similar to M. macclurei Weerasooriya & R.M.K.Saunders, but differs in having: leaves with more secondary veins (7–14 pairs), sometimes with domatia abaxially; yellow outer petals with pink stripes, densely hairy abaxially, and with a margin that becomes undulate with age; more carpels per flower (10–12); and longer fruiting pedicels (20–25 mm). Etymology: From the name Lang Suan district, Chumphon Province. Local name: Phrom lang suan (พรหมหลังสวน) (Chumphon).
 Mitrephora sirindhorniae Chalermglin, Leerat. & R.M.K.Saunders, sp. nov. Diagnosis: Mitrephora sirindhorniae resembles M. tomentosa Hook.f. & Thomson, but is distinguished by its leaves that are sparsely hairy abaxially, larger sepals (8–10 by 10–12 mm), larger outer petals (40–60 by 22–35 mm), larger inner petals (14–16 by 14.5–15 mm), longer flowering pedicels (25–27 mm), shorter monocarp stipes (2.5–8 mm) and monocarps with a longitudinal ridge. Etymology: Named after HRH Princess Maha Chakri Sirindhorn, in honour of her project on plant germplasm conservation in Thailand. Local name: Maha phrom sirinthon (มหาพรหมสิรินธร) (general).
Mitrephora sukhothaiensis Leerat., Chalermglin & R.M.K.Saunders, sp. nov. Diagnosis: Mitrephora sukhothaiensis is distinct from all other species in having a combination of outer petals that reflex at maturity as well as inner petals that have inwardly folded marginal protrusions at the midpoint adaxially. Etymology: From the name Sukhothai province. Local name: Phrom sukho (พรหมสุโข) (general). Charan Leeratiwong, Piya Chalermglin and Richard M. K. Saunders. 2023. Three New Species of Mitrephora (Annonaceae) from Thailand. PhytoKeys. 218: 93-107. DOI: 10.3897/phytokeys.218.91582 |
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