Hevansia Luangsa-ard, Hywel-Jones & Spatafora, in Kepler, Luangsa-ard, Hywel-Jones, Quandt, Sung, Rehner, Aime, Henkel, Sanjuan, Zare, Chen, Li, Rossman, Spatafora, Shrestha, IMA Fungus 8: 348 (2017). Emend. S. Mongkolsamrit, W. Noisripoom & K. Tasanathai

Mongkolsamrit, Suchada, Noisripoom, Wasana, Tasanathai, Kanoksri, Kobmoo, Noppol, Thanakitpipattana, Donnaya, Khonsanit, Artit, Petcharad, Booppa, Sakolrak, Baramee & Himaman, Winanda, 2022, Comprehensive treatise of Hevansia and three new genera Jenniferia, Parahevansia and Polystromomyces on spiders in Cordycipitaceae from Thailand, MycoKeys 91, pp. 113-149 : 113

Hevansia Luangsa-ard, Hywel-Jones & Spatafora, in Kepler, Luangsa-ard, Hywel-Jones, Quandt, Sung, Rehner, Aime, Henkel, Sanjuan, Zare, Chen, Li, Rossman, Spatafora, Shrestha, IMA Fungus 8: 348 (2017). Emend. S. Mongkolsamrit, W. Noisripoom & K. Tasanathai

Akanthomyces novoguineensis ≡ Akanthomyces novoguineensis Samson & B.L. Brady, Trans. Br. mycol. Soc. 79: 571 (1982).

Type species.

Hevansia novoguineensis (Samson & B.L. Brady) Luangsa-ard, Hywel-Jones & Spatafora, IMA Fungus 8: 349 (2017).

Emended generic description

(modified from Kepler et al. 2017). Circumscription : The sexual morph characteristics in genus are emended, based on three species H. minuta , H. nelumboides and H. novoguineensis producing sexual morph as members of Hevansia lineage in Fig. 1 . Sexual morph: Stromata arising from dorsal abdomen, stipe 1-10 mm, fertile part at the terminal of stipe, ca. 1-3 × 1-2 mm, white to cream. Perithecia immersed, narrowly ovoid. Asci cylindrical with thickened caps, 8-spored, ascospores hyaline, filiform, whole or disarticulating into part-spores. Asexual morph: Synnemata erect, simple or branched, solitary to numerous, cylindrical to clavate, mycelium covering host, white, cream to ash-grey or brownish-white. Phialides in a monolayer, sparsely scattered or crowded, on mycelium or on a basal cell, smooth-walled, cylindrical, globose, obovoid, with distinct necks. Conidia one-celled, smooth-walled, hyaline, occasionally in a short chain, clavate, cylindrical, fusiform to narrowly obclavate. Colony on PDA white, reverse cream, orange to pale red. Some species produce pale red pigment diffusing in the medium.

Notes.

Two specimens of H. arachnophila (NHJ 2465, NHJ 2633) were described by Hywel-Jones (1996). While the type strain of H. websteri (NHJ 2661) and living cultures are unavailable, available sequences of H. arachnophila and two strains of H. websteri (BCC 23860, BCC 36541) were retrieved from the GenBank nucleotide database and used in this study. The phylogenetic tree revealed that H. arachnophila and H. websteri (BCC 23860, BCC 36541) belong to the genus Hevansia (Fig. 1 ). The two strains of H. websteri (BCC 23860, BCC 36541) were not designated as type, nor as neotype. These strains (BCC 23860, BCC 36541) were thus named as Hevansia cf. websteri . Hevansia longispora and H. ovalongata were not included in the phylogenetic study because multi-locus sequence data are unavailable. To better resolve the genus Hevansia , H. longispora , H. ovalongata and H. websteri should be recollected from the locality and designated as neotypes and studied for their phylogenetic affinity to other Hevansia species in the future. However, H. longispora , H. ovalongata and H. websteri were accepted in Hevansia following complete and well-illustrated descriptions by Hywel-Jones (1996), Hsieh et al. (1997) and Huang et al. (2000).

Figures

Figure 1. RAxML tree of Hevansia, Jenniferia, Parahevasia, Polystromomyces and related genera in the Cordycipitaceae from a combined ITS, LSU, tef 1, rpb 1 and rpb 2 dataset. Numbers at the major nodes represent Maximum Likelihood Bootstrap (MLB) and Bayesian Posterior Probabilities (BPP). Bold lines in the tree represent 100 % of MLB and 1.00 of BPP. Symbols on the right-hand side correspond to the types of ascospore morphologies found in each genus that are observed in natural specimens of Cordycipitaceae described in Fig. 2.