Conidiobolus coronatus (Costantin) A. Batko, Entomophaga, Memoires hors serie 2: 129 (1964)

Nie, Yong, Yu, De-Shui, Wang, Cheng-Fang, Liu, Xiao-Yong & Huang, Bo, 2020, A taxonomic revision of the genus Conidiobolus (Ancylistaceae, Entomophthorales): four clades including three new genera, MycoKeys 66, pp. 55-81 : 55

Conidiobolus coronatus (Costantin) A. Batko, Entomophaga, Memoires hors serie 2: 129 (1964) Figure 4

Boudierella coronata Costantin, Bull. Soc. mycol. Fr. 13: 40 (1897). Basionym.

Delacroixia coronata (Costantin) Sacc. & P. Syd., Syll. fung. (Abellini) 14(1): 457 (1899).

Entomophthora coronata (Costantin) Kevorkian, J. Agric. Univ. Puerto Rico 21(2): 191 (1937).

= Conidiobolus villosus G.W. Martin, Bot. Gaz. 80(3): 317 (1925).

Specimens examined.

China, Shandong Province, Plant detritus, 20 Mar 2009, C.F. Wang, RCEF 4518.

Description.

Colonies grown on PDA for 3 d at 21 °C, reaching ca. 65 mm in diameter. Mycelia colourless, 8-20 μm wide. Primary conidiophores, positively phototropic, colourless, unbranched and producing a single globose conidium, extending to a length of 53-287 μm into the air, 7.5-20.5 μm wide. Primary conidia forcibly discharged, colourless, globose, measuring 36-52 μm in greatest width and 42-65 μm in total length, including a basal papilla 12-18 μm high and 6.5-14 μm wide. After discharging on to 2% water-agar, similar and smaller secondary conidia arise from primary conidia. Microconidia produced readily from primary conidia, globose or almond-shaped, 13-19 × 11-15 μm. Villose spores formed after 4-5 d, globose, 20-42 μm.

Notes.

The ex-type living culture is ATCC 28691 (United States, Louisiana, Plant detritus, 3 January 1972). Due to the absence of molecular data of ex-type strain ATCC 28691, the molecular data of the authentic strain NRRL 28638, which has been applied in many other phylogenetic analysis ( James et al. 2006; Liu and Voigt 2011; Gryganskyi et al. 2012; Tretter et al. 2014; Spatafora et al. 2016), was used in this study instead. The monotypic genus Delacroixia was typified by D. coronata which was transferred from an ascomycete Boudierella coronata Costantin ( Costantin 1897; Saccardo and Sydow 1899). After that, it was reclassified as a subgenus of Conidiobolus , namely Conidiobolus sub. Delacroixia (Sacc. & P. Syd.) Tyrrell & MacLeod to define all those Conidiobolus species capable of forming microspores and, consequently, D. coronata was recombined as C. coronatus ( Tyrrell and MacLeod 1972; Ben-Ze’ev and Kenneth 1982).

Figures

Figure 4. Conidiobolus coronatus a colony on PDA after 3 d at 21 ° C b primary conidia c production of secondary conidia d, e primary conidiophores bearing primary conidia f, g microconidia h villose spores. Scale bars: 10 mm (a); 20 μm (b-h).