PARASITICA — PELECINIDiE. 



89 



Fig. 13 * 



Family PELECINIDiE. 

 This remarkable family contains only the genus Pcfecinus repre- 

 sented by a single species {pobjtnrator Drury) which is black, shin- 

 ing ; head transverse, viewed in front (juadrate, the ovate eyes occu- 

 pying the up|)er lateral portion and distant from the base of the 

 nmndibles; face rugose and rather prominent medially ; ocelli small 



and arranged in a 

 triangle ; cheeks and 

 back part of the head 

 smooth and polished ; 

 antennte long, thread- 

 like, 14-jointed, baaal 

 joint short, thick, sec- 

 ond small, spherical, 

 the remaining joints 

 very long and slen- 

 der, the 9th and 10th whitish ; maxillary palpi 5-j()inted, labial 

 palpi 3-jointed ; chorax narrowed anteriorly, the prothorax reaching 

 the tegulae, the upper lateral angles sometimes prominently dentate ; 

 mesothorax triangular, trilobed, parapsidal grooves cremilate, con- 

 fluent and broad behind ; scutellun) convex, rather prominent ; meta- 

 thorax longer than broad, gradually narrowed and sloping })()steriorly. 

 rugulose above, the spiracles linear; anteri(jr wings with the neun:- 

 tion imperfectly and indistinctly defined, stigma linear, posterior 

 wings without nervures; legs long, esfjecially the posterior pair, 

 slender; trochanters one-jointed; anterior tibia; with a ciHved spur 

 at apex, their tarsi curved at base, with a broad tooth beneath ; in- 

 termediate and j)osterior tibiiv with two spurs at apex ; posterior 

 tibiaj much dilated, cylindrical, suddenly constricted and slender at 

 base ; basal joint of {)osterior tarsi very short, the second and third 

 joints very long and slender, the two apical joints short ; claws sim- 

 ple ; abdomen attached to the apex of the somewhat prolonged meta- 

 tliorax, that of the 9 gi'eJitly elongated, about five times the length 

 of the head and thorax, slender, cylindrical, basal joint thickest, 

 spindle-shaped, ovipositor not exserted; abdomen of the % strongly 

 clavate, about twice the length of the head and thorax, the basal 

 segment very long, three times as long a^^ the remaining segments 



* For the use of this cut of Pelecinus polyturator % 9 • the compiler is in- 

 debted to the kiudness of Dr. A. S. Packard, jr. 



TEANS. AMEB. KNT. 80<;. 



(12> 



8UPPL. VOL. 1887. 



