386 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



elusion the species is being named in honor of that outstanding Ameri- 

 can hemipterist. 



Rhytidoporus (Rhytidoporus) diniiniitics (Ruckcs), new combination 



Plate figure 93b 

 Aethus diminutus Ruckes, 1952, p. 2. 



Diagnosis. — The presence of a narrow band of the evaporatorium 

 beyond the apex of the pcritreme will separate this species from all 

 others in tlie genus. 



Description.^ — In the absence of specimens for study, the original 

 description will be quoted and followed by a few comments based on 

 mesopleural and metapleural structures taken from two sketches of 

 those areas on the types as kindly furnished by Dr. Ruckes. 



Castaneus brown to dark fuscous, slightly obovate in outline. Head as wide 

 between the eyes as long through its midline; apex evenly rounded as in allied 

 species; spines along the anterior margin short, blunt, and all of the same size; 

 two spines on apex of tylus and five on anterolateral margin of each jugum; 

 only three long setae on each jugal margin just in front of eyes; two setae on each 

 side of disc of head, one in front of each eye and one just behind the anterior 

 margin; a pair of setae, one long and one short, on the under side of the apical 

 margin just lateral of the base of the buccula. Pronotal disc slightly convex, 

 without any indentations, a vague double row of obsolescent, wide-spaced 

 punctures across the posterior half; a pair of large setigerous pits near apical 

 margin diagonally behind the ocelli; a pair of less pronounced setigerous punctures 

 inside each lateral margin, one near anterior angle and one larger, about midway 

 along the length; marginal setae of pronotum at least ten in number on each side. 

 Scutellum with a few small, scattered punctures on the disc; marginal punctures 

 indistinct and tending to become confluent posteriorly; apex of scutellum almost 

 angulate rather than rounded Hemelytra with some scattered punctures on 

 disc; a row of distinct punctures following the cubital vein, with a second row 

 laterally, converging towards the former posteriorly; a row of subcostal and radial 

 punctures present but not distinct; costal margin with three long setae on the 

 basal third; membrane clear hyaline, with a small fuscous spot near the middle 

 of its base. Abdominal venter impunctate, apical edges of segments obscurely 

 roughened; only two setae laterally on each segment adjacent to spiracle. 

 Mesosternal evaporating area very large, reaching the lateral margins of the 

 supporting sclerites. Rostrum nearly reaching posterior margins of mesocoxae, 

 second joint almost as long as third and fourth combined. Antennal segments 

 I, II, and III subequal, each sHghtly shorter than segments IV and V, which in 

 themselves are subequal. Antennae, rostrum, and tarsi testaceous, each becoming 

 paler apically. Hypopygium of the male broadly scoop-shaped, its apical margin 

 entire. 



Holotype: Male, 3.75 mm. long, 2.25 wide across humeri. South Bimini Island, 

 Bahama Islands, British West Indies, May, 1951 (collected by Cazier and 

 Gertsch). 



Allotype: Female, 4 mm. long, 2.5 mm. wide across humeri, same data as for 

 the holotype. 



Dr. Ruckes' sketches of tlie pleurae of both types show both the 

 mesopleural and metapleural evaporatoria as being characteristic for 



