1987] 
Shaw — New megalyrids from South America 
195 
Head: Hypognathous, wider than long; clypeus and frons convex, 
not excavated; frons, ocellar triangle, vertex, and occiput foveate- 
reticulate; gena and malar space punctate-rugose; eye ovoid, gla- 
brous; ocular orbital carina present along genal margin from 
subantennal groove to temple (Fig. 3); space between eye and ocular 
orbital carina foveate; malar suture faintly indicated at apex of 
subantennal groove; subantennal groove broad, bordered along 
dorsal margin by a sharp carina; occipital carina present, finely 
foveolate; occipital carina at base curving toward mandible; post- 
gena narrow; antenna long and slender, extending at least to middle 
of mesosoma (F7-12 missing from holotype); flagellum (at least 
FI -6) filiform; mandible 3-toothed; maxillary palpus apparently 4- 
segmented; labial palpus 3-segmented. 
Mesosoma: Mesonotum densely punctate; mesoscutal sulcus 
finely foveolate; axilla, scutellar disc, and mesopleuron punctulate- 
shagreened; axillae meeting at inner angles; pronotum rugose; 
“pronotar spiracle circular, without an internal fringe of setae; 
metapleuron and hind coxa shagreened; propodeal spiracle elongate, 
slit-like; propodeum areolate, without tubercles at postero-lateral 
corners; legs (as in Fig. 3); hind coxa without a longitudinal carina; 
hind tibial setae prone; fore and middle tibiae not apically rimmed 
with stout spines; fore and middle tibiae each with one apical spur; 
hind tibia with two spurs. 
Wings (as in Fig. 6) very faintly infumated, but without any dis- 
tinct banding pattern. 
Metasoma: Elongate, subcylindrical, gradually narrower apically 
but not compressed; faintly shagreened, but mostly smooth and 
shining; ovipositor (Fig. 3) just slightly longer than metasoma and 
slightly arched; ovipositor sheaths long, slender, and densely setose. 
Etymology: Derived from “neo-” (Gr.) meaning new, and Dinap- 
sis, after the ethiopian megalyrid genus (Waterston 1922). 
Remarks: Clearly related to the lineage comprising Dinapsis + 
Ettchellsia, which shares the following synapomorphies with Neo- 
dinapsis: Rs branching from Rs + M (Fig. 6), Rs apically tubular 
and sclerotized to the wing margin (Fig. 6), and ocular orbital carina 
present (Fig. 3). Neodinapsis differs from these genera by its sha- 
greened hind coxa without a longitudinal carina, prone hind tibial 
setae, and areolate propodeum. Dinapsis and Ettchellsia have a 
