MORGAN HEBARD 33 



From these observations we may conclude that the general 

 color type found in immatures of the present species and in adults 

 of A. gemma and A. diaphana is very primitive, and that these 

 genera thus show their common ancestral stock. Weight is added 

 to the latter deduction by the discovery of A. lita, a species which 

 has developed an utterly distinct color pattern, at least in the adult, 

 from the other species of that genus, in some ways rather suggesting 

 that of the present species. 

 Aglaopteryx lita^'' new species (Plate II, figures 14 and 15.) 



The present beautiful species differs very widely from A. 

 diaphana (Fabricius), with which it agrees more closely in the 

 tegminal development than with the genotype A. gemma Hebard, 

 in its striking and distinctive color and color pattern, slightly 

 narrower interocular space and caudal metatarsus, which is not 

 distinctly longer than the combined length of the succeeding tarsal 

 joints, as in that species. 



Type. — ^9; Cabima, Panama. May i8, 1911. (A. Busck.) 

 [United States National Museum.] 



Size large for this genus of small species; form robust; structure less delicate than 

 in diaphana. Head broad, eyes separated a distance distinctly over half that be- 

 tween the antennal sockets; very small ocellar spots apparent, but not well defined. 

 Maxillary palpi heavy. Pronotum with surface evenly and distinctly convex; 

 margin convex to the broadly rounded and sub-rectangulate latero-caudal angles, 

 showing a distinct flattening of this convexity over the head, caudal margin trans- 

 verse, showing an extremely feeble convexity. Tegmina reaching to apex of abdo- 

 men, strongly chitinous, smooth, the veins very inconspicuous, the discoidal sectors 

 oblique. Wings, though greatly reduced, with numerous and somewhat irregular 

 costal veins, not enlarged distad; median vein forking distad; ulnar vein with two 

 complete but short and distal rami; the discoidal. median and ulnar veins and the 

 rami of the latter connected by transverse veins of nearly the same heaviness; 

 intercalated triangle very small but distinct. 



Supra-anal plate transverse, about two and one-half limes as broad as long, tri- 

 angular with apex broadly rounded and incised. Cerci submoniliform, hairy, taper- 

 ing distad to acute apex, about three and one-half times as long as broad, with 

 eleven appreciable joints, flattened above, convex below with sutures distinct and 

 lateral margins flattened. Subgenital plate very broad, convex; free margin broadly 

 convex except at cerci, where it is broadly and very weakly concave. Limbs heavy 

 and armed as is characteristic of the genus. Ventro-caudal margin of cephalic 

 femora armed with two, and one distal, spines. Length of caudal metatarsus equals 

 combined length of succeeding tarsal joints. Tarsal arolia and pulvilli absent; 

 claws unspecialized, as txpical for the genus. 



*• From Xiri7 = smooth. 



MEM. AM. ENT. SOC, 4. 



