116 THE GYPSY MOTH APPENDIX. 



SYNOPSIS OK TIIK SPECIES.* 



1 ^ Membrane with a distinct dark spot at tip, . . . . .2. 



( Membrane without a dark spot ........ 5. 



Scutellum with a dark V-shaped spot, .... acutissimus. 



Scutellum without such spot, ....... 3. 



^ Humeral angles produced into slender spines, . . sjnnosuft. 

 ( Humeral angles acute but not spinose, . . . . .4. 



, ^ Ventral spine very short, not reaching hind coxae, . inodestus. 



I Ventral spine reaching to or upon hind coxae, . . serieventri* . 



r { Lateral lobes of head longer than tylus (median lobe), . . 6. 



( Lateral lobes of head not longer than tylus, . . . .8. 



fi ^ Humeral angles produced into stout spines, . . . cynicus. 

 f Humeral angles not spinose, ... ... 7. 



Humeral angles rounded, ventral spine very short, . . gillettei. 

 Humeral angles nearly right-angled, ventral spine long, crocatus. 

 Q $ Humeral angles spinose, curved toward head, . . inucroncttit*. 

 \ Humeral angles blunt and rounded, .... placidus. 



PODISUS PLACIDUS Uhler. (Plate 1, fig. 1.) 



1869, (?) Stiretrus fimbriatus Saunders, Can. Ent., vol. II , 



p. 15.f 



1870, Podisus placidus Uhler, Amer. Ent., voL II., p, 203. 

 1870, Armaplacidum Sauuders, Can. Ent., vol. II., pp. 93, 94. 

 1872, Podisus placidus Lintuer, Ent. Contrib.,1., p. 150. 

 1872, Podisus placidus Saunders, Rep. Ent. Soe. Ont.,p. 31. 

 1877, rodisus placidus Riley, 9th Rep. Ins. Mo., p. 17. 

 1889, Podisus placidus Saunders, Ins. Inj. to Fruits, p. 342. 

 1895, Podisus placidus Gillette-Baker, Bull. 31, Col. Agrl. 



Expt. Station, Ilemipt. Col., p. 13. 

 1897, Podisus placidus Kirkland, Rep. Mass State Bd. Agr., 



pp. 399-404. 



1897, Podisus placidus Uhler. ibid., p. 403. 

 1897, Podisus placidus Kirkland, Can. Ent , vol. XXIX., 



p. 115. 

 1897, Podisus placidus Uhler, ibid., p. 116. 



Length: male, 9 ram. ; female, 10 mm. Body ovate, yellowish 

 brown; ground color creamy yellow, punctate with brick red. 

 Head but little longer than wide, lateral margins dark brown ; 

 lateral lobes not longer than tylus, usually a little shorter ; tylu* 

 punctate laterally, nearly bare in the middle. First segment of 

 antennae short, yellowish, darker outwardly ; second segment 



* Podisus politus Uhler (Ms.) of Uhler's check list (1886) has been suppressed as 

 a name for a North American species (Uhler in litt.) . 



t The bibliography given for each species contains only such references as the 

 writer has been able to verify personally. 



