CACTUS-FEEDING INSECTS AND MITES 137 



Leptoglossus concolor (Walker) 



Our only records of this insect are of adults captured on prickly pear 

 in April 1926 at Cuernavaca, State of Morelos, and in October 1926 in 

 the State of Michoacan, Mexico, and identified by W. L. McAtee as 

 doubtfully concolor Walker. 



Leptoglossus subauratus Distant 



Adults were collected in Central America from prickly pears at Antigua, 

 Guatemala, and at La Union, El Salvador. 



Leptoglossus Gu^rin-M^neville, sp. 



This form, determined by W. L. McAtee as Narnia femorata Stil, is 

 very different from the Central American Jemorata. It was collected 

 from prickly pears at Barquisimeto, Venezuela, and Puerto Colombia, 

 Colombia, and was rather common on die Island of Curagao in 

 December 1927 and January 1928. 



Heteroptera: Capsidae 



HESPEROLABOPS Kirk 

 Hesperolabops picta Hunter, Pratt & Mitchell (not Uhler) 



This small capsid feeds on the joints of Platyopuntias and is reported 

 to attack other plants. It is distributed in southern Texas from Uvalde 

 and San Antonio to Brownsville, throughout the Mexican States of 

 Nuevo Leon and Tamaulipas, and on the Central Plateau of Mexico 

 from Chihuahua and Coahuila in the north to Mexico City. Adults and 

 larvae are gregarious in habit and often occur in abundance on Opuntia 

 lindheimeri in Texas. In the State of Tamaulipas, Mexico, they were 

 very plentiful around Tampico in November 1923 and between Vic- 

 toria and Tampico in March 1931. In October 1929 they were very 

 common at many localities on the Central Plateau. On the latter 

 occasion large plants of 0. streptacantha at Cautitlan near Mexico City 

 were yellow and sickly from the attack, although, as a rule this insect 

 causes little injury. Its life history has not received attention. 



HOMOPTERA 



The scale insect enemies of the Cactaceae are represented by several 

 species of cochineal of the genus Dactylopius Costa and by the scale 

 insect Diplacaspis echinocacti Bouche. Other scale insects and mealy 



