Laboulbenia collae T.Majewski

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 136-138

Laboulbenia collae T.Majewski

MB#363730

Fig. 27C

Polish Botanical Studies 7: 104 ( Majewski 1994b). –

Type: “ On Agonum (Anchomenus) albipes (Fabricius) . Ks. Berezki , 15.9.1972 ( TM. 1123 – holotype)”; KRAM. [ Poland]

Laboulbenia filifera var. pseudostolonicola S.Colla ( Colla 1925: 262) [Not registered in MycoBank]

Diagnostic features

Cell V oval, a third of the length of cell IV, not connected with cell III. Outer appendage hyaline to uniformly pale brown coloured, consisting of two similar branches arising from the suprabasal cell. Inner appendage consisting of a basal cell smaller than basal cell of outer appendage, supporting 1–2 once divided branches bearing solitary or paired terminal antheridia, sterile appendages infrequent. [Detailed description: Santamaria 1998]

Distribution and hosts

Other than the type, this species infects Cardiomera genei Bassi, 1834 from Italy ( Colla 1925) and Spain ( Santamaria 1986), both as L. filifera var. pseudostolonicola . Later reported on Paranchus and Agonum from Belgium ( De Kesel 1998) and on Paranchus from the Netherlands ( Haelewaters et al. 2012). Also from Switzerland on Anisodactylus ( Hoess & Senn-Irlet 2009) . The host Agonum albipes (Fabricius, 1796) is also known as Paranchus albipes (Fabricius, 1796) and Anchus ruficornis (Goeze, 1777) in old literature. Hosts are Col. Carabidae .

Collections examined from Denmark

On Paranchus albipes (Fabricius, 1796) (Col. Carabidae )

DENMARK – Bornholm (B) • Svartingedalen ved Baggeå ; 55°11.740′ N, 14 45.260′ E; VB81; 23 Jun. 2018; JP 1158; JP det.; ZMUC C-F-123683 , C-F-123684 . – Nordøstsjaelland (NEZ) • Kagsmose ; 55°42.698′ N, 12°27.378′ E; UB48; 21 Jan. 2018; J. SØgaard Hansen 996; J. Søgaard Hansen; ZMUC C-F-123503 • Naesset, Rudersdal ; 55°48.469′ N, 12°25.759′ E; UB38; 18 Apr. 2018; M. Kofoed-Hansen 1105; M. Kofoed-Hansen; ZMUC C-F-123623 .

Remarks

First record from Denmark. Laboulbenia collae may be distinguished from similar species like L. filifera by its bigger size, above 300 µm from foot to perithecial apex; and from L. flagellata by longer cells II, III and VI, and by the uniformly coloured basal and suprabasal cells of outer appendage whereas appear ± dorsally obscured in L. flagellata . The distinctiveness of Laboulbenia collae from L. flagellata has been recently supported with molecular analysis ( Haelewaters et al. 2019b).

Figures

Fig. 27. Laboulbenia spp. A–B. L. clivinalis Thaxt. A. Mature thallus. B. Three immature thalli showing the oblique and blackened septum separating basal and suprabasal cells of outer appendage (arrows), a diagnostic character. – C. L. collae T.Majewski. Mature thallus. Scale bars: 50 µm. Photographs from slides ZMUC C-F-122501 (A–B), ZMUC C-F-123503 (C).