. Cooperative economic insect report. Insect pests Control United States Periodicals. - 952 - Hosts: Cattle, pigs, birds,and man. Life History and Habits: The biology in Japan is as follows: Overwintering females appear in late March or early April. Under laboratory conditions, a female deposits up to 4 egg masses, each of which contains about 50-200 eggs. Hatching occurs in 2 days and pupation in 10 days. Adults appear in 2 days. Although most females enter hibernation in September, males continue to swarm until the beginning of November. Mating was observed in the swarms. Larvae have been co
. Cooperative economic insect report. Insect pests Control United States Periodicals. - 952 - Hosts: Cattle, pigs, birds,and man. Life History and Habits: The biology in Japan is as follows: Overwintering females appear in late March or early April. Under laboratory conditions, a female deposits up to 4 egg masses, each of which contains about 50-200 eggs. Hatching occurs in 2 days and pupation in 10 days. Adults appear in 2 days. Although most females enter hibernation in September, males continue to swarm until the beginning of November. Mating was observed in the swarms. Larvae have been collected under various situations in other parts of the Orient. They fre- quent hyacinth ponds, streams, swamps, temporary and semipermanent ground water habitats. Reports of their being in tidal marshes of low salinity and occasion- ally in tins or drums sunk in the ground have been made. Description: ADULT - Female - Length 5 mm. or less. Generally may be identi- fied by its small size, brown scaling on the scutum and accessory pale scaling on the lower surface of the proboscis. The species is difficult to distinguish from others in the vishnui subgroup but the long filamentous teeth of the bucco- pharyngeal armature are diagnostic. Male - Palpus longer than proboscis; two bands on long segment and 1 each at bases of last two segments. Fore and mid leg with unequal tarsal claws; the larger with a branch at about the middle but smaller with one close to its base. LARVA - Fourth stage - Length about 5 mm. not including siphon. Characterized by arrangement of bristles on thorax (hairs 1, 2, 3, 5, 6-P single pectinate, 4, 8-P bifid, pectinate, 7-P trifid, pectinate 14-P single, simple), shape of comb scales (which are fan shaped), and by ana- tomical characters of the siphon. The long narrow siphon usually with 5 pairs of 3 or 4 forked subventral bristles and one pair of 2 or 3 forked lateral bristles .. General Distribution of Culex tritaeniorhynchus Giles Selected References: 1.
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