noun
Rhizopus; bread mold fungus
A genus of saprobic fungi commonly known as bread mold; the Japanese name literally means 'spiderweb mold'.
クモノスカビはパンや果物によく生える。
Rhizopus often grows on bread and fruit.
このクモノスカビの一種は、酒造りに使われる麹菌の仲間だ。
One species of this Rhizopus is related to the koji mold used in sake brewing.
麹黴 (Aspergillus oryzae) is a beneficial mold used in fermentation, while クモノスカビ (Rhizopus) is often a spoilage mold, though some species are used in food production.
From 蜘蛛の巣 (くものす, 'spider web') + 黴 (かび, 'mold'), referring to the web-like appearance of the mold's mycelium.