14 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.61. 



5. Hind tarsus shorter than tibia. Scutellum not over-hanging luetauotum, its 



apical portion triangular in profile and slightly upturned. Mesoscutum 

 with uniformly distributed short pubescence. Q. prinoides. 



prinoides (Beutenmueller). 



Hind tarsus as long or longer than tibia. Scutellum overhanging metanotum, 



its apical portion not upturned but directed straight backward. IVIesoscutum 



almost bare between parapsides behind 6. 



6. Parapsidal grooves precurrent. Wing at least twice as long as scutellum. 



Q. ticolor, Florida echini Ashmead. 



Parapsidal grooves not quite reaching front mai-gin. Wing not twice length 



of scutellum 7. 



r. Low median ridge from median ocellus to antennae. Q. alba. 



erinacei Beutenmueller. 

 Front without median ridge pezoraachoides (Osten Sacken). 



ACRASPIS ALARIA. new species. 



Agamic female. — Reddish-brown with clypeus to occiput ; antennae, 

 propodeum, abdomen except sides of second tergite deeply infuscated 

 to black. Interociilar space 0.58 transfacial and area 1.27 times as 

 broad as high. Malar space, 0.47 eye. Antennae, 14-segmented ; 

 length as 18 : 9 : 24 : 21 : 16 : 14 : 12 : 11 : 9 : 9 : 8 : 8 : 7 : 14. Palpi 3 and 5 

 segmented ; last very stout. Sides of propodeum finely rugose. Mes- 

 onotum 1.6 times as long as broad; mesoscutum as long as broad; the 

 lateral lines bare and polished ; parapsidal grooves very short, obliter- 

 ated at both ends; pubescence more sparse between parapsides and 

 surface often shining. Scutellum margined ; not as sharply triangular 

 behind as in some species. Propodeum rugose between the usual 

 carinae. Hind coxa not as stout as femur; tarsus shorter than tibia. 

 All claws with stout teeth. Fore wing broad; width one-third length, 

 broadest in distal half, over twice as long as scutellum, reaching 

 middle of second tergite; only subcosta and first abscissa of radius 

 developed. Abdomen about 0.6 length of body ; second tergite making 

 up 0.6; lengths of tergites 2-4 as 82:23:6. Sides of all tergites 

 pubescent, with narrow median dorsal base space, which is broader 

 on second tergite and deeply indents the pubescent patches on its sides. 

 Using width of head as a base the length of mesonotum ratio is 1.06 ; 

 wing, 1.1; antenna, 2.5; ovipositor, 2.24. Range in size of 14 pinned 

 specimens, 2.5-3.5 mm. ; average 3.1 mm. 



Type.—C?d. No. 24680, U.S.N.M. Twelve cotypes. 



Host. — Quercus gamhelii. 



Gall. — Similar to that of Acraspis villosa Gillette. Straw-yellow; 

 9-11 mm. in diameter, covered with a large 1 mm. deep of closely 

 packed conical projections, each ending in a bristle a little over 1 

 mm. long. Monothalamous, the central larval cell 3 mm. in diameter. 

 Single, attached to midrib; exit hole close to point of attachment. 

 Occurs in fall. 



