PEAR INSECTS. 169 



Janus compressus Fabriuhis. 



(The Bud -stinger. Tenthredinidae; Hymenoptera.) 



Host: Pear. 



Injury: Hollows out medullary canal in twigs. 



Description and biology: Adult male, length 7 mm.; color black, with a transverse 

 yellow band on thorax; abdomen entirely yellow; female 8 mm.; blackish, with three 

 yellow spots on thorax and circle of red on abdomen. Occurs in May. One genera- 

 tion. Pupates in spring in gallery in shoot. Larva, length 6 mm.; white; makes 

 gallery in twig. Winters in this stage in lower part of gallery. Eggs placed in buds. 



Distribution: Europe. 

 Genaux, G. Entomologie et Parasitologie Agricoles, 1904, p. 304. 

 MuTiLLOT, L. Les Insectes Nuisibles, 1891, p. 189. 



Famphilius flaviventris Retz. 

 (Social Pear Sawfly. Tenthrediuidse; Hymenoptera.) 



Hosts: Pear, plum, cherry, white thorn, and other rosaceous plants. 



Injury: Considerable damage. Strips foliage from trees. 



Description and biology: Adult, female, black; antennae and legs yellowish; abdo- 

 men tawny at apex, with yellow triangular mark on sides of segments; ventrally 

 bands of yellow; male, abdomen reddish yellow from second segment to apex; lower 

 part of head yellow; wing expanse 8-12 mm. Pupates in cocoon in soil. Larva, 

 length 25 mm.; orange yellow; head black; two black spots on second segment; has 

 no prologs; spins tent over leaves on which it feeds; winters in cocoon; may suspend 

 development and remain in soil over a second winter. Eggs are deposited on under 

 surface of leaves in groups of 30 to 60. Incubation requires 6 or 7 days. 



Distribution: Europe. 

 Theobald, F. V. Insect Pests of Fruit, 1909, p. 338. 



IMPORTANT PEAR INSECTS. 



HEMIPTERA. 

 Coccidae. 



Armored — 



Aspidiotus (Diaspidiotus) afTicanus Marlatt; Africa. 

 ^A'spidiotus (Aonidia) lauri Bouch6; Germany. ^ 



:)f. Aspidiotus (Diaspidiotus) ostrezformis Curtis; Europe, Canada. 



Aspidiotus pectinatus Lindinger; South Africa. 



Aspidiotus (Diaspidiotus) pyri Lichtenstein; France, Switzerland. 

 ^Diaspis pentagona Targioni-Tozzetti; South Africa, Australia, Italy. 



Diaspis pyri Colv6e; Spain, Germany. 



Diaspis santali Maskell; New Zealand. 



Diaspis squamosus Newstead and Theobald; Great Britain. 

 ^Epidiaspis piricola Del Guercio; Germany, Italy, France, Russia. 



Parlatoria calianthina Berlese and Leonardi; Spain, Victoria, New South Wales. 



Parlatoria pyri Marlatt; China. 

 Unarmored— 



Ceroplastes rubens Maskell; Australia, Hawaii, Japan. 

 ^Lecanium bituberculatum Targioni-Tozzetti; England, France, Sweden, Italy, Germany. 



Lecanium caprex Linnaeus; Europe, Nova Scotia. 



Lecanium coryli Linneeus; Europe, Algeria. 



Lecanium glandi Kuwana; Japan. 



Lecanium kunoensis Kuwana; China. 



Lecanium rugosum Signoret; France, Germany. 



Lecanium tilix Linnaeus; Europe. 



Lecanium vihi Bouch6; Europe. 



COLEOPTERA. 

 Buprestidae. 



HfiAgrilus sinuatus Olivier; Europe; introduced into United States; borer. 



Cerambycidse. 



C'erambyx scopolii Fuessly; Europe; borer. 

 Liopus nebulosus Linnaeus; Europe; borer. 



