Morphological and Cytological Observations on the Mycelium of Coelomomyces

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Abstract
The mycelium of Coelomomyces pentangulatus Couch and C. dodgei Couch, fungal parasites of mosquito larvae, consists of nonseptate, irregularly branching hyphae which are vested with a cytoplasmic membrane only. Hyphal bodies formed by fragmentation appear to spread the infection within a larva. Minute chromosomes are seen in nuclei in early stages of nuclear division in the hyphae, but in later stages of division the chromatinic material occurs in amorphous masses. A spindle apparatus is present in dividing nuclei of C. dodgei, but none was observed in C. pentangulatus. Nuclear divisions in the hyphae appear not be synchronous. A discussion of the unique characteristic of the non-walled hyphae and of the nature of nuclear division in the hyphae is presented.