CYDNIDAE OF THE WESTERN HEMISPHERE FROESCHNEK 403 



maxillary plate polished, impunctate. Antennal segments: I, 0.21 

 (0.20-0.23); II, 0.14(0.11-0.18); III, 0.20(0.19-0.23); IV, 0.20(0.16- 

 0.23); V, 0.22(0.20-0.25). Labium reaching bases of middle coxae. 

 Labial segments: I, 0.39(0.36-0.46); II, 0.50(0.43-0.53); III, 0.38 

 (0.33-0.44) ; IV, 0.30(0.26-0.36). 



Pronotum: Length less than half width, 1.18(0.99-1.32) :2.38 

 (2.11-2.69); anterior margin moderately, singly emarginate; lateral 

 margin straight on basal two-thirds or more; lateral margin entire, 

 not emarginate, with submarginal stripe of numerous setigerous 

 punctures; transverse impression weak to absent, postmedian, without 

 a row of coarser punctures; anterior lobe distinctly but variably 

 punctate only subapically and laterally; posterior lobe sparsely and 

 finely punctured to coarsely and closely punctured. 



Scutellum: Little wider than long, 1.58(1.36-1.75) : 1.45(1.25-1.65) ; 

 surface shining, feebly or not wrinkled, punctures sparse across 

 narrow base, extending to apex. 



Hemelytron: Clavus and corium obsoletely alutaceous; corium 

 uniformly punctured over most of surface; costa with more than 25 

 setigerous punctures; membrane slightly longer than basal width, 

 immaculate or patterned, pattern consisting either of a median 

 fuscous dot or median fuscous dot with apical half infuscated. 



Propleurae, mesoplcurae, and metapleurae: As in generic descrip- 

 tion, latter with lobe of peritreme loop- or ear-shaped, with osteole 

 opening ventrally at its base (fig. 90,a) ; lateral area polished, usually 

 with few scattered punctures mesally. 



Legs: As in generic description. 



Terminalia: Genital capsule distinctly punctate laterally, apical 

 margin feebly sinuate either side of middle; gonostylus variable in 

 shape (figs. 198,a-/). 



Length of body: 3.98(3.66-4.47). 



Female : Similar to male, measurements averaging larger. 



Head: Width-length ratio, 1.23(1.13-1.34) :0.92(0.84-0.97) ; inter- 

 ocular width, 0.88(0.80-0.95). Antennal segments: I, 0.23(0.21-0.26) ; 

 II, 0.15(0.13-0.17); III, 0.21(0.20-0.24); IV, 0.21(0.20-0.26); V, 

 0.22(0.20-0.29). Labial segments I, 0.40(0.37-0.43); II, 0.51(0.50- 

 0.53); III, 0.40(0.37-0.44); IV, 0.33(0.30-0.37). 



Pronotum: Length-width ratio, 1.30(1.21-1.49) : 2.64 (2.43-2.93). 



Scutellum: Length-width ratio, 1.66(1.49-1.82) : 1.73(1.61-1.89). 



Length of body: 4.45(4.04-5.01). 



Type data.— The type (USNM) is from "Ogden, Utah." 



Specimens studied. — 70 males, 118 females. 



United States: Arizona: Chiso Valley, Phoenix, Tuba City, Winslow, St. 

 Johns; July, August. California: Altamont, Amadee, Anaheim, Antioch, 

 Burlingame, Davis Co., Fairfax, Lagunitas, mountains west of La Panza, Los 



