1^^ J2Z^' 

 536. 

 PEZOxMACHUS HOPEI. 



Ordeu Hymenoptera. Fam. Ichneumonida}. 



Type of the Genus, Mutilla acarorum Linn. 

 Pezomachus Grav., Curt. — Gelis Thun.} — CryptusFab. — Ichneumon 

 Fab., Oliv., Panz. — Mutilla Linn., Schr. 



Antenna: scarcely so loiif-f as the body, suhfilifonn, pubescent, 

 composed of If) joints in some females, basal joint the stoutest 

 and oval, 2nd the smallest, suhglobose, .'Jrd the lonjrest, re- 

 mainder decreasinj; in leny-th hut becomins? gradually thicker 

 and quadrate beyond the middle, terminal joint elongate-conic 

 (1 portions of the bsuse and apex). 



Labrum inserted under the clypeus, transverse, somewhat semi- 

 circular, with a few bristles on the margin, and a membranous 

 l)ubescent triangidar lobe beneath, a little attenuated at the 

 apex (2). 



Mandibles short, elongate-trigonate, bifid at the apex (3). 

 Maxilla: terminated l)y '1 rounded lobes, the internal one cilijited 

 with very short hairs, the other larger and pilose. Palpi long, 

 pilose and o -jointed, basal joint clavate, "ind and 3rd a little 

 longer, the former the stoutest, 4th a little the shortest, 5th 

 the size of the 3rd, subfusiform (4). 



Mentum eloug-atc obovate. Lip small, cordate and striated. 

 Palpi rather short, jjilose and 4-jointed, first 2 joints obtrigo- 

 nate, 3rd smaller stibglobose, 4th the longest and subconic (.')). 

 Head transverse, broader than the thorax (1 # the face) : eyes lateral 

 prominent and ovate, coarsely (jranulated : ocelli 3 in triangle on the 

 crown of the head. Thorax long and narrow, with a stiture across 

 the middle in the apterous females (T) ; collar very .^tmall in the 

 winged species, and the scutellum distinct. Wings often wanting, 

 always imperfect, shorter than the thora.r, bristly, nerrures strong, 

 suj)erior with only '2 basal cells (9). Abdomen ovate, not longer 

 than the head and thorax, but broader in the females, with 6 joints 

 I'isible, attached by a peduncle, sometimes funnel-shaped (Trt).- ovi- 

 positor stout, sborter than the abdomen. Legs appearing long, es- 

 pecially the hinder pair : tibia*, anterior with a spine, the others 

 spurred at the apex : tarsi 5-jointed, basal joint the longest, 4th 

 sometitnes cordate (8, afore leg). 

 The dissections were drawn from /. vagans Oliv. 



HoPEi Grav. — Curt. Guide, Gen. 504. 29 1**. 



Female ferruginous red, clothed with very fine short pubescence ; 

 head black, antenna? black above, excepting the first five joints 

 which are entirely rufous, and the tip of the 7th and 3 following 

 are white above : wings shorter than the thorax, having no 

 areolet ; scutellum distinct, metathorax with a small tooth at 

 each angle ; hinder margin of the 4th abdominal segment and 

 the following black, the 6th bearing a broad white band above : 

 ovipositor black, castaneous at the apex ; tips of hinder thighs 

 and tibia* black. 



/« the Author s and other Cabinets. 



