Mycological Progress

, Volume 9, Issue 1, pp 69–78 | Cite as

Two new species of Leptographium from Dryocetes authographus and Hylastes cunicularius in Norway

  • Karin JacobsEmail author
  • Paal Krokene
  • Halvor Solheim
  • Michael J. Wingfield
Original Article


The anamorph genus Leptographium Lagerberg and Melin includes species that are typically bark beetle-associated fungi, with teleomorphs in Grosmannia. During a survey of ophiostomatoid fungi in Norway, two unusual species, that fit the broader morphological description of Leptographium, were isolated directly from the root-feeding beetles, Dryocetes authographus and Hylastes cunicularius, as well as from roots infested by these insects. The first of these could be distinguished from other described species based on a sparse sporulation, black spore drops and chlamydospores in older cultures. This species also produces a Hyalorhinocladiella synanamorph. The second species was characterised by distinctly curved conidia. Based on these unusual morphological characteristics and distinct DNA sequences, these fungi were recognised as new taxa for which the names Leptographium chlamydatum sp. nov. and L. curvisporum sp. nov. are provided.


Bark beetle-associated fungi Dryocetes authographus Hylastes cunicularius Leptographium chlamydatum Leptographium curvisporum 



We acknowledge the National Research Foundation (NRF), Tree Pathology Cooperative Programme (TPCP), University of Pretoria, South Africa; Norwegian Research Council (NFR) and Norwegian Forest and Landscape Institute (Skog og landskap) for financial support. We are also indebted to Dr. Hugh Glen for providing the Latin diagnoses.


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Copyright information

© German Mycological Society and Springer 2009

Authors and Affiliations

  • Karin Jacobs
    • 1
    Email author
  • Paal Krokene
    • 2
  • Halvor Solheim
    • 2
  • Michael J. Wingfield
    • 3
  1. 1.Department of MicrobiologyUniversity of StellenboschStellenboschSouth Africa
  2. 2.Norwegian Forest and Landscape InstituteÅsNorway
  3. 3.Forestry and Agricultural Biotechnology InstituteUniversity of PretoriaPretoriaSouth Africa

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