512 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ui 



Prolobodes gigas (Signoret) 



Plate figure 238 



Lobostoma gigas Signoret, 1881b, p. 195, pi. 6, fig. 15. 

 Prolobodes gigas Lethierry and Severin, 1893, p. 62. 



Diagnosis.— The absence of prominent, coarse punctures laterally 

 on the anterior lobe of the pronotum (one specimen showed a few, 

 less than six) marks this species from the other two within the genus. 



Description. — Male : 



Head: Length nearly two-thu-ds width, 2.49(2.23-2.63) :3.71 (3.56- 

 3.88); interocular w^idth, 2.17(2.08-2.22); juga dorsally wdth radiating 

 rugae weak to obsolete, impunctate or with obsolete minute punc- 

 tures. Antennal segments: I, 0.75(0.73-0.80); II, 0.61(0.54-0.70); 



III, 0.96(0.93-1.01); IV, 1.03(0.98-1.07); V, 1.10(1.06-1.15). Labial 

 segments: I, 1.31(1.16-1.38); II, 1.75(1.72-1.82); III, 1.59(1.39-1.76); 



IV, 1.09(1.06-1.15). 



Pronotum: Length more than half width, 5.07(4.64-5.47) : 8.94 (8.37- 

 9.31); transverse impression absent or weakly indicated laterally, 

 marked by a band of several, usually well separated punctures; an- 

 terior lobe not or only very feebly and minutely punctured (one 

 specimen with a few moderate punctures laterally); posterior lobe 

 with a few w^idely separated punctures on anterior lialf. 



Scutellum: Wider than long, 5.72(5.40-6.27): 5.21 (4.80-5.39); disc 

 with several UTegularly but distinctly separate d, moderate punctures. 



Propleuron, mesopleuron, and metapleuron : As described for genus. 



Legs and sternites: As described for genus. 



Terminalia: Gonostylus as illustrated (fig. 238). 



Length of body: 15.15(13.94-15.90). 



Female: Similar to male but jugal rugae and anteapical pronotal 

 impression weaker, measurements mostly smaller. 



Head: Length-width ratio, 2.25(2. 18-2.31):3.49(3.37-3.68); inter- 

 ocular width, 2.09(2.02-2.18). Antennal segments: I, 0.70(0.66- 

 0.73); II, 0.55(0.53-0.58); III, 0.85(0.84-0.87); IV, 0.93(0.92-0.96); 



V, 1.04(1.01-1.08). Labial segments: I, 1.23(1.22-1.26); II, 1.72(1.70- 

 L74); III, 1.52(1.40-1.64); IV, 1.06(1.02-1.10). 



Pronotum: Length-width ratio, 4.20(3.91-4.48) :7.72(7.23-8.17). 



Scutellum: Width-length ratio, 5.07 (4.05-5.31) :4. 79(4.61-5.10). 



Length of body: 13.26(12.60-13.68). 



Type data. — Signoret gave the type locality as "Santa-Fe-de- 

 Bogata." A female (Wien) labeled "Bogata" and "gigas" is marked 

 with a red type label. The tlu*ee legs from the right side of the type 

 are glued to a small card on another pin; antennals II-V are missing 

 from both sides, as are all middle and hind tarsi; all bristles have been 

 abraded from head, pronotum and costa. 



