Laboulbenia leisti J.Siemaszko & Siemaszko

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 171-172

Laboulbenia leisti J.Siemaszko & Siemaszko

MB#269178

Fig. 36A–B

Polskie Pismo Entomologiczne 6: 203 ( Siemaszko & Siemaszko 1928). –

Type: [Type destroyed!] “ In elytris Leisti rufescentis F. Poloniae, Pulawy . I.P.”. [ Poland]

Diagnostic features

Cell V obtriangular, half or less of the length of cell IV, not connected with cell III. Outer appendage unbranched, up to 700 µm long, the 2–3 lower cells contrasting by their darker or paler colour from the cells above. Inner appendage consisting of a small number of variably elongated branches, ramified from the base, supporting paired or solitary dark antheridia ( Fig. 36B , an). Basal cell of inner appendage slightly shorter than the outer. [Detailed descriptions: Majewski 1994b; Weir 1994; Santamaria 1998]

Distribution and hosts

On Col. Carabidae of the genus Leistus . This is a species only known from Europe: Poland, Spain, France, Belgium, United Kingdom, Germany, Hungary, Romania, Finland ( Majewski 2008), Denmark ( Høier 2009), Switzerland ( Hoess & Senn-Irlet 2009), Sweden ( Huggert 2010), Czech Republic, Slovakia ( Rossi et al. 2010), and the Netherlands ( Haelewaters et al. 2012). De Kesel et al. (2020) reported L. leisti on Agonum muelleri from Belgium, a host record which requires confirmation.

Collections examined from Denmark

On Leistus ferrugineus (Linnaeus, 1758) (Col. Carabidae ) DENMARK – Fyn (F) • Fyns Hoved ; 55°36.736′ N, 10°35.706′ E; PG06; 4 Jan. 2015; K.B. Nielsen 281; JP det.; ZMUC C-F-122760 . – Nordøstsjaelland (NEZ) • Vest for Trørød; 55°50.223′ N, 12°31.185′ E; UB49; 13 Nov. 2016; JP 136; JP det.; ZMUC C-F-122612 . – Nordvestsjaelland (NWZ) • Sonnerup Skov ; 55°56.525′ N, 11°33.988′ E; PH60; 1 Apr. 2017; JP 254; JP det.; ZMUC C-F-122734 . – Sydsjaelland (SZ) • Holtug Kalkbrud ; 55°20.470′ N, 12°26.678′ E; UB33; 21 Sep. 2013; JP 348; JP det.; ZMUC C-F-122830 • Stevns Fyr nord for Vindehuse; 55°17.420′ N, 12°27.183′ E; UB33; 19 Nov. 2014; JP 156; JP det.; ZMUC C-F-122635 .

Remarks

Thalli of Laboulbenia leisti collected in Denmark are well-distinguished by the appendage structure which agrees with that described by Majewski (1994b).

Figures

Fig. 36. Laboulbenia spp. A–B. L. leisti J.Siemaszko & Siemaszko. A. Mature thallus with lower area of appendages in detail (B) with labelled antheridia (an). – C–D. L. lichtensteinii F.Picard. C. Mature thallus. D. Upper part of an immature thallus showing the young appendage. – E–F. L. littoralis De Kesel & Haelew. E. Mature thallus. F. Antheridia (an) in detail. – G–I. L. luxurians Peyr. G–H. Mature thalli with labelled cells III, IV, insertion cell (ic), and the black spot on the upper dorsal side of cell I (arrow). I. Appendage from an immature thallus in detail. Scale bars:A–C, E, G–I = 50 µm; D, F = 25 µm. Photographs from slides ZMUC C-F-122760 (A–B), ZMUC C-F-122576 (C–D), ZMUC C-F-123730 (E–F), ZMUC C-F-123642 (G–H), ZMUC C-F-123515 (I).