Loculosulcatispora G.C. Ren & K.D. Hyde, gen. nov.
Index Fungorum number: IF557580, Facesoffungi number: FoF 07977
Etymology:—From the combination of two words ‘loculo’ and ‘sulcatispora’ referring to loculate conidiomata in Sulcatisporaceae
Saprobic on decaying wood. Sexual morph: Undetermined. Asexual morph: Conidiomata solitary, scattered, immersed or semi-immersed, conical, ostiolate, black, multilocular. ostioles single or multiple, central, short. Peridium outer layer comprising dark pigmented cells of textura angularis, inner layer comprising hyaline cells of textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells arising from the stratum, hyaline, doliiform to cylindrical, aseptate, unbranched, holoblastic, determinate, smooth-walled. Conidia hyaline, oblong, one- celled, smooth-walled, guttulate.
Type species:—Loculosulcatispora thailandica G.C. Ren & K.D. Hyde
Notes:—We compared our new genus with the species of hyaline coelomycetesin Li et al. (2020). Loculosulcatispora
is similar to Botryosphaeria, Ciliosporella, Cornutispora, Melanops, Neodermea, Neodidymelliopsis, Neofusicoccum, Phacidium and Sakireeta in having multi-locular pycnidia. However, Loculosulcatispora differs by its conidial characteristics. In the phylogenetic analysis Loculosulcatispora clusters in Sulcatisporaceae with Magnicamarosporium, Neobambusicola and Sulcatispora and is similar to these genera in having scattered, immersed, subglobose or conical, black pycnidia with a central ostiole (Crous et al. 2014, Tanaka et al. 2015, Phookamsak et al. 2019). However, Loculosulcatispora differs in having hyaline, aseptate, oblong, guttulate conidia. Magnicamarosporium species have muriform and dark brown conidia. Sulcatispora species have ellipsoid, yellowish brown, multi-septate conidia with striate ornamentation. Neobambusicola species have hyaline fusoid-ellipsoid, finely guttulate, 1-septate conidia that are constricted at the septum (Crous et al. 2014, Tanaka et al. 2015, Phookamsak et al. 2019). Detailed morphological comparison of genera in Sulcatisporaceae is shown in Table 2. Loculosulcatispora is phylogenetically well-separated from other genera in this family. Therefore, we introduce Loculosulcatispora as a new genus of Sulcatisporaceae.
TABLE 2. Synopsis of characters of Loculosulcatispora, Magnicamarosporium, Neobambusicola and Sulcatispora species (Sulcatisporaceae).
| Genera | Conidiomata | Ostiole | Conidiogenous cells | Paraphyses | Conidia | References |
| Loculosulcatispora | Black, conical, immersed or semi-immersed, scattered, multilocular | Black, subglobose to ovoid, single or multiple | Hyaline, doliiform to cylindrical, holoblastic, arising from around stratum | Hyaline, aseptate, unbranched | Hyaline, oblong, one-celled, guttulate | This study |
| Magnicamarosporium | Dark brown to | Dark brown, | Hyaline, cylindrical | Filamentous, | Dark brown, | Tanaka et al. |
| black, globose, immersed, scattered, single cavity | papillate to short cylindrical, periphyses | to doliiform, holoblastic to annellidic | septate, sometimes branched | subglobose to obovoid, muriform | (2015) | |
| Neobambusicola | Dark brown, globose, erumpent, separate or aggregated | Opening via central ostiole | Hyaline, subcylindrical to ampulliform, phialidic | Absent | Hyaline, fusoid-ellipsoid, prominently guttulate, medially 1- septate | Crous et al. (2014) |
| Sulcatispora | Black, immersed, globose, scattered, single cavity | Dark brown, short papillate, periphyses | Hyaline, cylindrical, annellidic | Absent | Yellowish brown, ellipsoid, with striate ornamentation, multi-septate | Tanaka et al. (2015) |
Species