1965] 
Werner — Ischyropalpus 
201 
setae ca. o.oi mm long at intervals; separated by 0.38 mm on front 
and covering most of sides. Antennae brown, with segment 1 1 
obscurely paler, segments 2-10 widest near apex. Measurements in 
0.01 mm: 14/7, 9/6, 12/6, 11/7, 12/7, 12/8, 10/8, 10/8, io/8, 
10/10, 17/10. Segment 1 somewhat barrel-shaped, pedunculate, 2-10 
widest near apex, becoming more triangular, 9-10 subtruncate at 
base, 11 truncate at base, tapering to a blunt point from basal 2/5. 
Setae and tactile setae rather shaggy. 
Pronotum 0.64 mm long, 0.41 wide at base, 0.54 maximum, 0.26 
at the well-defined collar. Basal impressed line distinct. Sides widest 
at apical 2/5, curving evenly to collar and almost straight to basal 
impressed line. Disc slightly flattened ; sculpture similar to head but 
punctures slightly deeper, smaller and denser. Tactile setae longer, 
ca. 0.05 mm. Elytra subparallel, 1.79 mm long, 0.73 wide at the 
well-marked humeri, 0.90 maximum, slightly flattened but with suture 
elevated behind the weak postbasal transverse impression ; omoplates 
feebly elevated. Setae decumbent, straight, 0.05 mm long; tactile 
setae suberect, slightly curved, 0.04 mm. The setae between and 
just behind the omoplates are slightly oblique. Surface shiny, with 
very fine punctulation and slight irregularities; punctures small but 
sharply defined, ca. 0.03 mm from center to center, the intervals flat. 
Sides of mesosternum and ventral portion of mesepisterna smooth 
and shiny, with a few fine punctures and closely appressed setae. 
Mesepimera apparently not visible along sides of mesepisterna. Mete- 
pisterna and metasternum with fine punctures and feebly micro- 
reticulate. Abdomen shiny, with fine punctures. Sternum 7 simple; 
sternum 8 transversely excavated in apical third, with the apical 
margin very shallowly concave. The dical excavation does not appear 
to have any modification of the setae. Tergum 7 with a concave hind 
margin. Tergum 8 flat, shiny, finely punctured, 0.26 mm wide, the 
apical portion broadly and evenly rounded. Femora moderately heavy 
beyond middle. Front femur 0.49 X 0.17 mm, front tibia 0.45 
X 0.06, hind femur 0.61 X 0.18. Coxae all dark, trochanters and 
rest of leg dark rufescent, the trochanters slightly paler. Front tarsi 
somewhat expanded. Females are almost the same as the males, but 
have the front tarsi narrower. 
Distribution : Known only from Uruguay. Holotype cf : Maldo- 
nado (Cerro Pelado), [uruguay], 25.XII.12, sobr z Eryngium sp., 
Coll. Tremoleras. Paratypes: 8 cf, 4?, same data. 1 cT, Maldonado 
(Pan de Azucar), 15.XII.12, sobre Eryngium sp., Coll. Tremoleras. 
7 cf, 5?, Minas — Arro. Espinillo, [uruguay], 10.XII.12, sobre 
Eryngium sp., Coll. Tremoleras. Holotype and paratypes in Museo 
de La Plata. 
