128 
Psyche 
[June 
pound eyes black. Reddish brown pigment distributed as follows: 
median rims of lateral ocelli and dorsal rim of median ocellus, dis- 
continuously along suture between post- and ante-clypeus, faint 
irregular band along each side of thorax, pleuro-coxal border of 
metathorax and epimero-coxal borders of pro- and mesothoraces ; 
nairow band across base of abdomen dorsally; complete bands across 
abdominal terga 3 and 4 and a pair of lateral spots in each of terga 
2, 5, 6, and 7 ; postero-lateral borders of epiproct. Clunium pale gray- 
ish brown. 
Female. — Measurements (Table I). 
Morphology. — Lacinial tip (fig. 8) : apex of lateral cusp pointed; 
median cusp slightly bifid at apex. Subgenital plate (fig. 25) with 
posterior margin faintly trilobed, beset with 12 strong setae; T- 
shaped sclerite present as a rod ; small pigmented region interiorly 
near base of plate. Ovipositor valvulae (fig. 18) : first valvula 
lacking basal appendage; third valvula with no trace of bilobing. 
Spermatheca (fig. 24) : sac with constriction in about middle. Para- 
proctal sensorium with 10- 11 typical trichobothria and one seta 
with poorly developed basal rosette. 
Color (in alcohol). — Same as in male. 
Type locality. — Palenque Ruins, Chiapas, Mexico, July 5, 1966, 
E. L. Mockford collector. Holotype cf, allotype ?, 1 cf and 1 $ 
paratypes. Types are in the author’s collection. 
Records. — Mexico: Chiapas: Finca Monte Libano in Ocosingo 
Valley. Tabasco: 6 miles west of Macuspana. 
Habitat. — Specimens from the type locality were beaten from 
dried Heliconia leaves. The single specimen from the Tabasco local- 
ity was beaten from palm foliage. 
Musapsocus birkenholzi, new species ( cf ) 
Diagnosis. — Both forewings of single specimen with 2 A joining 
iA, but in right wing 2A forking just before junction, sending short 
vein almost to wing margin. Male with four papillar fields dorsally 
on clunium : one on midline at posterior margin, one on midline about 
half distance from anterior to posterior margin^ and a pair very 
widely separated near anterior margin. Parameres joined anteriorly 
to form broad basal region of phallosome. 
Male. — Measurements (Table I). 
Morphology. — Hypandrium with posterior margin thickened and 
deeply bilobed, apparently reinforced in middle by short ridge. Phal- 
losome (fig. 11): parameres broadened toward base with broad 
