340 N. C. AGR. EXP. STA. BUL. 239 
clypeus convex or slightly flattened medially, muscle impressions distinct or 
not, face without pubescence, transclypeal suture usually incomplete, clypellus 
with contour continuing profile of clypeus. 
Thorax with pronotal width equal to or slightly greater than transocular 
width of head, lateral margins slightly convergent anteriorly, dorsopleural 
carinae complete, posterior margin rectilinear or (more often) slightly con- 
cave, disk without sculpturing or pubescence; scutellum not striate behind 
transverse sulcus. Forewing not broadened apically, with membrane not 
sharply delimited, veins not very distinct, apical margin slightly concave, with 
four apical cells, the base of the fourth more proximal than base of third, 
second apical cell strongly narrowed apically, without a plexus of veins, tex- 
ture coriaceous and without sculpturing; forewings of female in rest position 
exceeding apex of ovipositor; hindwing smoky subhyaline with a splotch of 
contrasting color on vein m-cu. Hindleg with femoral setal formula 2:1:1, first 
tarsomere longer than combined length of second and third tarsomeres and 
with two parallel rows of small setae on plantar surface. 
Male genitalia: Pygofer moderately to well produced, usually convex 
apically, but occasionally (L. uncata, n. sp.) truncate, or with an apical acute 
undifferentially-sclerotized portion (L. yusti, n. sp.), or with processes arising 
variously, with a number of macrosetae which are variable interspecifically in 
arrangement, in some species with interspersed microsetae, occasionally also 
with a basiventral group of microsetae. Plates triangular, usually not ex- 
tending posteriorly nearly as far as pygofer apex, each with a longitudinal row 
of macrosetae. Style extending posteriorly to an extent which varies inter- 
specifically, with or without a preapical lobe. Connective Y-, T-shaped, or 
trapezoidal. Aedeagus symmetrical, with or without processes. Paraphyses 
present (exception: L. rubriguttata (Walker)), symmetrical, and usually stalked. 
Female abdominal sternum VII moderately produced medially and with 
apex narrowly notched medially. Genital chamber without sclerites. Ovi- 
positor with second valvulae each with dorsal teeth on most of portion beyond 
basal curvature, the primary teeth quadrate, bearing minute secondary denti- 
cles and extending to apex which is bluntly rounded; posteroventral margin 
with minute denticles. Pygofer with a number of macrosetae, usually more 
numerous near posterodorsal and posteroventral margins. 
Specimens of Ladoffa, new genus, are usually colored red and black in dor- 
sal view, but the ground color of the crown and pronotum may be brown. 
The forewings are most often black marked with red, or less commonly red 
marked with black. Some of the markings are constant intraspecifically and of 
use taxonomically, for example the form of middle red marking of the clavus 
in a number of species. 
The genus is named in honor of Sonia Ladoff, teacher of biology in the 
Pittsburgh, Pennsylvania public school system, whose enthusiasm for insects 
led me to an interesting and beloved hobby which later became a profession 
which led eventually to the present endeavor. 
Ladoffa is related to Jragua Melichar in the treatment of which dis- 
tinguishing characters are discussed. It is also related to Diedrocephala Spinola 
from which it differs in having four apical cells in the forewing, in lacking a 
