NEW MYCETOPHILIDAE FROM CALIFORNIA. 



By Esther Guthrie, Stanford University, California. 



During the fall, winter and early spring of 1915-16 a number 

 of species of fungi was collected by the writer, in the environs 

 of Stanford University for the purpose of studying Myceto- 

 philid fauna. 



The collection consisted of twenty-one species of fungi. 

 These were determined for me by Prof. McMurphy of the 

 Botany Department. 



Some of these fungi furnished no insects while others 

 furnished insects of several species, as shown in th^ appended 

 table — the same species, in some cases, being found in more 

 than one species of fungus. 



The following species are described as new. 



I. Mycetophila maculosa n. sp. 



Male: Length 4 mm. Head yellowish; antennae brownish; scape 

 yellowish, flagellum gradually darkening from base to tip. Humerus 

 yellow; pleurae brownish. Two vitta3 on dorsum, continuing over 

 scutellum. Metanotum brown with narrow light median line. Hairs 

 pale; setae dark. Abdomen brown; posterior margin of second and 

 succeeding segments narrowly yellow ; Hypopygium (Plate XXV, A) coxag 

 and legs yellow ; middle and hind coxae with spot on posterior surface. Tips 

 of middle and hind femora and metatarsi narrowly dark brown. No 

 setae on flexor surface of middle tibise; two ranges of setae on extensor 

 surface of hind tibiae. Fore metatarsis about 7-8 as long as tibiffi ; hind 

 metatarsi about .9 as long as remaining joints taken together. Wing, 

 yellowish gray, hyaline ; dark brown spot at cross veins ; barely clouded ■ 

 nearly midway between cross veins and apical margin, extending over 

 marginal and first submarginal cells. Branches of cubitus not divergent. 

 (Plate XXV, Fig. la). Halteres yellow. 



Female: Same as male, with some little variations in color. 



Reared from Pleurotiis ostreatiis. California Redwood Park, 

 October, 1915. 



Type No. 569-5-1, L. S. J. U., Entomological Museum. 



II. Mycetophila permata n. sp. 



Male: Length 4 mm. Head dark brown. Two ocelli contiguous to 

 eye margin. Antennas lighter brown, longer than head and thorax; 

 scape, base of flagellum and palpi yellow. Thorax brown; three 

 coalesced broad brown stripes on mesonotum, the two lateral ones 



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