FAM. HYLECHTHRID^E 



Hylechthridae. Pierce, Proc. Ent. Soc. Wash. Vol. 9, p. 76 (1908); Bull. U. S. Xat. Mus. no. 66, 

 p. 1 1 3 (1909). 



Characters. — Male. — Antennae five-jointed, the third laterally produced, the fourth very 

 short, and the fifth elongate; tarsi four-jointed. 



Female. — Cephalothorax with head not more than one-half as wide as metathorax at spiracles. 

 The family includes only one genus. 



1. Genus HYLECHTHRUS, Saunders 



Hylechthrus. Saunders, Trans. Ent. Soc. Lond. (2), Vol. 1, p. 5j (i85o); Pierce, Bull, U. S. Nat. 

 Mus. no. 66, p. 113(1909). 



Characters. — Male. — Head large, transverse; eyes large, multiple-facetted. Mandibles rather 

 short; maxillae two-jointed. Antennae five-jointed, the third laterally produced, the fourth very short, 

 the fifth elongate. Wings with seven primary veins from base, with two distal detached veins between 

 the radius and medius, which are basally united, and with the cubitus appearing as a detached vein (?). 

 Tarsi four-jointed. 



Female. — Cephalothorax with head not more than one-half as wide as metathorax at spiracles. 



Type of genus. — H. rubi, Saunders. 



Geographical distribution of species. — Parasites of bees of the genus Prosopis. 



1. H. quercus, Saunders, Trans. Ent. Soc. Lond. (2), Vol. 1, p. 58 (i85o). Epirus. 



H. quercus, Pierce, Bull. U. S. Nat. Mus. no. 66, p. u5 (1909). 



2. H. rubi, Saunders, Trans. Ent. Soc. Lond. (2), Vol. 1, p. 5j, pi. 8, Epirus. 



ff. i-3 (i85o); Vol. 2, pi. i5, ff. 2-17 (i853). — PI. 4, Fig, 34 ; 

 PI. 5, Fig. 3. 



H. rubi postulates, Saunders. Trans. Ent. Soc. Lond. (1872). 

 H. rubi, Pierce, Bull. U. S. Nat. Mus. no. 66, pp. 114, n5, text tig. 3, 

 nos. 7,8; pi. 5, ff. 1. 2 (1909). 



3. H. sieboldii, Saunders, Trans. Ent. Soc. Lond. (2), Vol. 2, p. 143, pi. 16, Epirus. 



f. 20 (i853). 



H. sieboldii. Pierce, Bull. U. S. Nat. Mus. no. 66, p. n5 (1909'. 



