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Monday, September 16th, 2024

    Time Event
    7:42a
    [Botany • 2024] Elleanthus loxensis (Orchidaceae: Epidendroideae: Sobralieae) • A New white-flowered Elleanthus from the Andes of southern Ecuador and Notes on Hummingbird Pollination of Elleanthus scopula


    Elleanthus loxensis M.M.Jiménez & Iturralde,

     in Jiménez, Kuethe, Garzón-Suárez, Lapo-González, Vélez-Abarca, Salagaje et Iturralde, 2024. 
     
    Abstract
    A new species of Elleanthus from southern Ecuador is described and illustrated here. Elleanthus loxensis is characterized by having ramified stems with coriaceous, plicate leaves and white flowers. Its ecological, morphological, and taxonomic traits are compared with other similar species within the genus and discussed here. Additionally, comments on the pollination of Elleanthus scopula are presented.

    cloud forests, Loja, orchids, South America, upper elevation, Zamora Chinchipe, Monocots


    Elleanthus loxensis. 
    A, B. In situ photographs in the El Madrigal of Podocarpus Reserve. C, D. Plant in flower in Tapichacala Reserve. E. The first author is photographing the new species in Tapichalaca Reserve.
    Photos: by Marco M. Jiménez (A, B) and James H. Muchmore Jr. (C–E).

    Lankester Composite Dissection Plate (LCDP) of Elleanthus loxensis.
    A. Habit with a close-up of the internode of a branch (A1) and a leaf in adaxial view (A2). B. Detail of the inflorescence with a flower in frontal view (B1). C. Dissected flower with a closeup of the apical margin (C1) and corpuscules of the lip (C2). D. Lip, column and ovary in lateral views with a longitudinal section of the lip showing the column and corpuscules. E. Column in ventral and ¾ views. F. Pollinarium and anther in adaxial and abaxial views.
    Elaborated by Nadia Lapo-González based on photographs of the type.
     
    Elleanthus loxensis M.M.Jiménez & Iturralde, sp. nov. 

    Elleantus loxensis is most similar to E. maculatus but it is distinguished by the stems branching along its length (vs. branching only from the base), the white flowers (vs. purple) with shorter spathulate-lanceolate sepals (7.5–8.3 × 3.5–3.6 mm vs. oblong petals 14–18 × 2–3 mm), the smaller, membranaceous, laciniate lip (9.0–9.9 × 7.3–10.1 mm vs. fleshy, fimbriate lip, 17 × 10 mm), and the base with subreniform calli (vs. obpyriform, globose calli).

    Hummingbirds visiting Elleanthus scopula.
    A, B, C. Metallura tyrianthina (female) with pollinarium in its bill. D, E. Chalcostigma herrani.
    Photos by Luis Salagaje.




    Marco M. Jiménez, J.R. Kuethe, Henry X. Garzón-Suárez, Nadia Lapo-González, Leisberth Vélez-Abarca, Luis A. Salagaje M. and Gabriel A. Iturralde. 2024. A New white-flowered Elleanthus (Orchidaceae: Sobralieae) from the Andes of southern Ecuador and Notes on Hummingbird Pollination of Elleanthus scopula.  Phytotaxa. 662(3); 209-223. DOI: doi.org/10.11646/phytotaxa.662.3.1
      facebook.com/NadiaLapoGonzales/posts/7975710739191234

    1:22p
    [Entomology • 2024] Kibakoganea unnahachotei • On the Genus Kibakoganea Nagai, 1984 (Coleoptera: Scarabaeidae: Rutelinae) in Thailand
     
      Kibakoganea unnahachotei 
    Hongsuwong & Pathomwattananurak. 2024
     

    Abstract
    In this study, a new species Kibakoganea unnahachotei sp. nov. is described. Additionally, a new junior synonym of Kibakoganea akikoae Hirasawa, 1992 = Kibakoganea akikoae satoi Nagai, 2004 syn. nov. is proposed. Including the new species, genus Kibakoganea Nagai, 1984 currently comprises 18 species globally, and three species are recorded from Thailand. The habitus, some behavioral notes, and key to species of Kibakoganea from Thailand are given herein.

    Keywords: Coleoptera, Didrepanephorina, Rutelinae, Rutelini, Southeast Asia


    Family Scarabaeidae Latrielle, 1802
    Subfamily Rutelinae MacLeay, 1819
    Tribe Rutelini MacLeay, 1819

    Genus Kibakoganea Nagai, 1984

      Kibakoganea unnahachotei sp. nov. habitus:
    A–C, holotype ♂ (Petchabun Province, Thailand);
    D–E, paratype ♂ (Phetchabun Province, Thailand);
    A, D–E, dorsal view; B, lateral view; C, ventral view.
    scale bar: 10 mm

      Kibakoganea unnahachotei sp. nov. characteristics, holotype ♂ (Petchabun Province, Thailand):
    A, head in the dorsal view; B, head in the ventral view; C, pygidium; D, mesofemora.
    scale bar: 2 mm

    Kibakoganea unnahachotei Hongsuwong and Pathomwattananurak, sp. nov.

    Differential diagnosis. Kibakoganea was arranged into three main species groups based on the structures of the aedeagus (Do 2013). K. unnahachotei is placed in the species group with parameres symmetric and apical part not separated. Among them, K. yoshitomii Nagai, 2004 from Northern Laos and K. costata Muramoto & Kobayashi, 2019 from India showed the most resemblance but could be distinguished with the characteristic listed in Table 1.
    ...

    Etymology. The specific epithet “unnahachotei” is named after a Thai entomologist, Thornthan Unnahachote, who has consistently been a valuable collaborator and has provided assistance during our entomological surveys.


    Thitipong Hongsuwong and Wuttipon Pathomwattananurak. 2024. On the Genus Kibakoganea Nagai, 1984 (Coleoptera: Scarabaeidae: Rutelinae) in Thailand with A New described Species. Journal of Asia-Pacific Biodiversity. In Press. DOI: doi.org/10.1016/j.japb.2024.07.003

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