Phrosinella (Euhilarella) fumosa Allen, 1926

Phrosinella fumosa Allen, 1926: 74 [♂ ♀].

Phrosinella fumosa: Batra, 1980: 509 [habits]; Evans, 1960: 123 [habits]; Downes, 1965: 938 [catalogue]; Evans, 1970: 451 [habits]; 1971: 500 [habits]; Downes, 1985: 271 [faunistic]; Spofford et al., 1989: 257, 259 [hosts]; Pape, 1996: 123 [catalogue]; Pickering, 2011: 1674, 1721 [habits].

Holotype (male): USA, Virginia: Falls Church. Deposited in USNM.

Distribution: Nearctic: USA (Delaware, Maryland, Massachusetts, Michigan, New Jersey, New York, Virginia).

Habits: Larvae develop in ground nests of different sphecid wasps and solitary bees, where they feed at host prey (paralyzed or freshly killed insects; nectar and blossom dust in nests of Colletidae), viz:

1. At freshly killed adult flies: Crabro argusinus (Evans, 1960) .

9 after Downes, 1985

2. At freshly killed adult solitary wasps, bees, and honey bees: Philanthus albopictus (Pickering, 2009), P. crabroniformis, P. pulchellus, P. zebratus (Spofford et al., 1989) .

3. At paralyzed adult bees: Cerceris fumipennis (Pickering, 2009) .

4. At paralyzed nymphs and adults of Homoptera, Cycadoidea: Gorytes canaliculatus (Evans, 1966, 1970).

5. At nectar and blossom dust: Colletes inaequalis, C. thoracicus, C. validus (Batra, 1980) .