SPHAEROSTILBE COCCOPHIIA. 



On September 19, 1907, leaves containing VerticiUiuni hctcrocladum 

 were tied to a twig of privet (Lignstrnm ovalifolium) bearing abundant 

 larvae of Alc\rodcs citri. The weather was moist for two weeks^ after. 



On October 5 (16 days), pustules were very evident on inany larvae 

 on leaves adjacent to those tied in. Under the microscope a mycelium was 

 to be seen inside the larvae. On October 25 (36 days), the fungus with 

 conidia was well established on a few neighboring leaves, but was not 

 spreading rapidly (Plate V, Fig. 35). 



On November 16, leaves of Enonymns Ainericanus bearing a species 

 of Diaspis attacked by Verticillium hctcrocladum were pinned on to an 

 orange tree at Gainesville by E. W. Berger. On December 31, 1907, three 

 pustules of freshly grown Verticillium were found (one on a scale insect, 

 probably Lecanium, and the others apparently on larvae of Aleyrodcs citri),. 

 on a tree next to the one in which the fungus had been pinned. 



INSECTS PARASITIZED, WITH LOCALITIES. 



Aleyrodcs citri: Palmetto, Manatee, St. Petersburg, Gainesville, Apopka, 

 Citra, Mclntosh. 



Mytilaspis ghverii : Gainesville. 



Diaspis sp. on leaves of Buonyimis Ainericanus \ Gainesville. 



Lecanium sp. on orange leaves: Gainesville. 



Lecanium hcspcridnm on lemon leaves: Italy. 



Mytilaspis citricola: Palmetto, Citra. 



In Africa and the Antilles the host insect is not known. 



V. SPHAEROSTILRE COCCOPHILA TUL. 



This fungus, which has a world-wide distribution, and has been re- 

 ported as a parasite on no less than fifteen different species of scale insects, 

 has been found in a few instances attacking larvae of Aleyrodcs citri. 



The conidial stage of this fungus (Figs. 14 

 and 15) was discovered by Desmazieres :}2 on 



scales of a coccid on young willow-stems in 

 France, as early as 1848. It was described un- 

 der the name Microccra coccophiia. The per- 

 ithecia (Figs. 12 and 13) were discovered by 



Tulasne 33 and described by him in 1865 as oc- 

 curring on scale insects on species of Laurus, 



Salix and Fraxinus in France, Italy and Amer- A Fig : f ly> 



A 



X75. 1D! ica - Desmazieres' description is as follows: Ci ^ rit x h 2 e oo 



Microccra, Desmaz. Velum externum persistens, membranaceo-floccostim, dein 



supra in lacinias plures rumpens ; receptaculum clavatum carnosttm e fibris sub- 



simplicibus sporidiiferis formatum ; sporidia fusiformia, acuata. 



Microcera coccophiia Desmaz. M. minutissima, subcaespitosa cornuto-conica, 



simplex, lateritio-rosea, basi membrana tenuissima albida vaginato-connata. Sporidiis- 



paucis, hyalinis, elongatis, utrinque acutis. Hab. in coccis. Hieme. 



" Desmazieres. Ann. des Sc. Nat., Tome X, p. 359, 1848. 

 Tulasne. Carpologia, Vol. Ill, 105, 1865. 



