CYDNIDAE OF THE WESTERN HEMISPHERE — FROESCHNER 621 



Metapleuron: Peritreme abruptly terminated apically; lateral 

 margin of evaporatorium straight to faintly convex; lateral area 

 impunctate. 



Sternites: Polished, impunctate, with few short, longitudinal rugae 

 in spiracular area. 



Legs: Not specially modified. 



Length of body: 4.79(4.65-4.92). 



Type data. — Holotype female (JCL), "Nova Teutonia, Santa 

 Catarina, Brazil, X-16, 1950, F. Plaumann." Paratypes: Same data 

 as type, 1 female (JCL); same locality and collector as type, Aug. 15, 

 1935, 1 female (RLU). 



Discussion. — None of the specimens examined bore any biological 

 data. 



Dallasiellus (Dallasiellus) planicollis (Horvdth), new combination 



Plate figure 280 

 Geocnethus planicollis Horvdth, 1919, p. 247. 



Diagnosis. — Among the large species which make up the group 

 centering about bergi (key couplets 7 to 9), this species may be recog- 

 nized by a combination of several characters : low prosternal carinae, 

 corium alutaceous and with but a few exocorial punctures which are 

 confined to apex, and the numerous coarse, scutellar punctures. 



Description. — Based on one specimen, the type male. Oval. 



Head: Broader than long, 2.25:1.43; interocular width, 1.30; 

 clypeus as long as juga, slightly narrowed at apex; juga longitudinally 

 impressed medially with four submarginal setigerous punctures — 

 two close-set ones in front of eye and two widely-spaced ones beyond; 

 ocelli large, width subequal to space separating them from eye. 

 Antennal segments: I, 0.45; II, 0.60; III, 0.63; IV, 0.91; V, missing. 

 Maxillary plate punctate on basal half; bucculae moderately high; 

 labium reaching between middle coxae. Labial segments: I, 1.05; 

 II, 1.33; III, 1.20; IV, 0.88. 



Pronotum: Wider than long, 5.21:2.83; sides tapering from base, 

 markedly sinuate medially; anterior margin deeply emarginate, with 

 a bordering broad, punctate impression; transverse impression 

 slightly behind middle, vaguely impressed, with an irregular row of 

 coarse punctures that curve forward medially; anterior lobe with a 

 few punctures laterally; posterior lobe impunctate except for few 

 moderate punctures medially; prosternal carinae low, in profile 

 angulately rounded. 



Scutellum: Longer than wide, 3.42:3.28; discally with more than 

 35 coarse, sunken punctures crowded to form coarse, transverse 

 rugae between them. 



