290 
Psyche 
[Vol. 89 
gate, (42) moderately slender in dorsal view, (43) broad basally in 
adoral view; (44) mandibular spiculation absent; (46) outer surface 
of mandible smooth, distinct tubercle and setae absent; (51) apical 
portion of mandible, in adoral view, attenuate; (52) cusp moderately 
well-defined; (53) cuspal projection absent; (54) cuspal region multi- 
dentate; (55, 55a) dorsal apical edge with distinct, moderately large 
teeth; (57) apical concavity weakly developed; (60, 60a) ventral api- 
cal edge smooth, teeth absent. (61) Labiomaxillary region produced; 
(62) labium and maxilla distinct, (63) subequal in length. (65) Inner 
apical surface of maxilla rounded, not produced mesiad; (66) unlike 
all other known bee larvae except those of Ptiloglossa, maxilla with 
a longitudinal groove on adoral surface; (67) cardo and stipes sclero- 
tized; (69, 70) maxillary palpus moderately elongate and slender, 
(71) apically positioned on maxillary apex in lateral view; (72) galea 
absent. (73) Labium divided into prementum and postmentum; (75) 
palpus elongate and slightly decurved, (76) subequal to maxillary 
palpus in length. (77) Salivary lips well-developed; (78, 79, 80) sali- 
vary opening narrow, circular, at end of long spoutlike salivary lips, 
(83) which project from a well-defined platelike structure at apex of 
labium; (82) apical labial swellings absent. (84) Hypopharynx nor- 
mal in size, (85) bilobed, (86) exceeded by labium and maxilla; (87) 
hypopharyngeal groove distinct, sclerotized laterally. 
body (Fig. 14): (88) Integument spiculate, density of spicules 
greater on dorsum than on venter; (93) body moderate in length, 
(94) robust, (95) widest posteriorly in lateral view; (96) interseg- 
mental lines moderately incised; (97) intrasegmental lines indistinct; 
(98) dorsal tubercles weakly developed, most prominent on abdom- 
inal segments 5-7; (103) lateral tubercles absent (present on one 
specimen from Panama); (104) ventrolateral tubercles absent; (106) 
abdominal segment 10 moderate in length, (107) rounded, (108) 
dorsal in attachment to segment 9; (109) venter of segment 10 
slightly produced (very weakly so in specimen from Panama), (110) 
without conspicuous, darkly pigmented spiculation; (111) dorsal 
surface of segment 10 smooth, without lines or ridges; (113) anus 
apical. (114) Spiracles large, (115) not on elevations; (117) atrium 
very broad and shallow, (118) not produced above body surface; 
(119) atrial wall faintly ridged, (120) with four to five broken rings 
of spicules; (121) atrial rim absent; (122) peritreme wide; (123) pri- 
mary tracheal collar absent; (126) subatrium apparently extremely 
