1975] 
Lawrence & Stephan — Cerylonidae 
141 
suture and prothoracic antennal cavities, and it includes the three 
genera Murmidius, Mychocerus, and Botrodus, all of which are 
represented in North America. Casey (1895) also included the 
Lapethini and the Eupsilobiini, with the single genus Eupsilobius. 
According to Sen Gupta and Crowson (1973), the lapethines should 
be transferred to the Ceryloninae, while Eupsilobius Casey, a junior 
synonym of Eidoreus Sharp, should constitute a distinct subfamily 
of Endomychidae. 
Murmidius Leach 
Murmidius Leach, 1822: 41. Type species, by monotypy, M. ferrugineus 
Leach [= Murmidius ovalis (Beck)]. 
Ceutocerus Germar, 1824: 85. Type species, by monotypy, C. advena 
Germar [— Murmidius ovalis (Beck)]. 
This genus contains five Neotropical species and five from the Old 
World. One of the latter, M. ovalis , has been introduced in stored 
products to many parts of the world, including North America. 
Hinton (1942b) provided a key to the Old World species. 
Murmidius ovalis (Beck) 
(Fig. 21) 
Histor ovalis Beck, 1817: 7. Type locality: Bavaria. 
Murmidius ferrugineus Leach, 1822: 41. 
Ceutocerus advena Germar, 1824: 85. 
This species may be distinguished by its small size (1.2- 1.4 mm.), 
oval, convex body with seriate elytral punctation, dorsal antennal 
cavities, 10-segmented antennae with a 1 -segmented club, and 4- 
segmented tarsi. 
Distribution. Cosmopolitan. In North America, recorded from 
Alaska, California, Kansas, Illinois, Ontario, New York, Maryland, 
District of Columbia, Louisiana, and Florida. 
Biology. Usually associated with stored products and often found 
in granaries and warehouses. Reported from fruits and seeds, Indian 
corn, rice, wheat, flour, hay, straw, gall-nuts, oak-galls, ginger, and 
pepper, and also collected in dead leaves and cut grass (Hinton, 
1945; Halstead, 1968). The larva, which is flat and onisciform, 
with barbed setae, has been illustrated by Boving and Craighead 
(1931) and Halstead (1968), while the last author figured the pupal 
cocoon and gave additional information on life history and develop- 
ment. 
