CYDNIDAE OF THE WESTERN HEMISPHERE — FROESCHNER 539 



Genus Tominotiis Mulsant and Rey 



Tominoius Mulsant and Rey, 1866, p. 319. 

 Trichocoris Uhler, 1876, p. 277. New synonymy. 

 Psectrocephalus Van Duzee, 1922, p. 270. New synonymy. 

 Aethus of authors, nee Dallas (1851, p. 110). 



Diagnosis. — This genus is best diagnosed by the lack of differ- 

 entiated terminal part of the osteolar canal, the terete hind tibiae 

 which have all spines similarly developed and by the complete, sub- 

 marginal row of coarse, close-set setigerous punctures on the head. 



Description. — Size small to large (4-12), oval, ovate or sub- 

 parallel; dorsum much less convex than venter. 



Head : Length usually more than half width, flattened to somewhat 

 convex above; juga carinate dorsally on margin, as long as or longer 

 than and convergent in front of clypeus; juga with a submarginal row 

 of coarse, close-set punctures giving rise to long cilia and usually also 

 to short, erect, stout pegs; eyes well developed, slightly to strongly 

 projecting; ocelli absent or well developed, when present located on or 

 behind a line connecting hind margins of eyes and separated from eyes 

 by a space equal to or greater than an ocellar width; antennae 5- 

 segmented, I shortest, others variable in proportion; bucculae low to 

 very high, reaching nearly or quite to base of head; labium reaching 

 from middle of mesosternum to middle of metasternum, labial II 

 longest, compressed but without a foliaceous lobe, IV shortest. 



Pronotum: Width about twice length; anterior margin moderately 

 to strongly emarginate, without a paralleling submarginal groove; 

 lateral margins carinate, narrowed on apical third or more, basal part 

 straight or incurved, some males with slight to strong constriction 

 submediaUy; lateral submarginal setigerous punctures variable in 

 number and arrangement; posterior margin broadly but shallowly 

 convex; transverse impression distinct to absent, usually marked by 

 a row or band of distinct punctures. 



Scutellum: Wider or narrower than long, triangular, apex broad and 

 rounded (fig. 80) or distinctly narrowed (fig. 79); disc impunctate, 

 weakly punctate or with numerous distinct punctures. 



Hemelytron: Corial areas well defined; costa with one to many 

 setigerous punctures; membranal suture straight or weakly bisinuate, 

 curved anteriorly or posteriorly laterally; membrane distinctly less 

 than one-third of hemelytral length, approacliing, reaching or sur- 

 passing apex of abdomen. 



Propleuron: Weakly to distinctly convex anterior to depression, 

 usually with some punctures; prosternal carinae prominent, usually 

 rather sharp; anterior margin slightly lobulate either side of middle. 



Mesopleuron: Weakly concave; evaporatorium extensive to very 

 restricted and interrupted by mesally projecting spur of lateral pol- 



