50 HEMIPTERA-HETEROPTERA. 
c', Pronotum constricted at the sides between the anterior and posterior 
lobes ; head with a subconical tubercle on each side of the disc. 
a’, Antenne in the male with joint 4 very much longer than 2 and 3 
united . . . . . . . ee ew ew we lw ee anlipes, Stal. 
6". Antenne in the male with joint 4 about as long as 2 and 3 united. . noualhieri, Hand). 
ad'. Pronotum not constricted at the sides between the anterior and posterior 
lobes ; head with two subconical tubercles on each side of the disc . . albopicta, Handl. 
1. Phymata erosa. 
Cimex erosus, Linn. Syst. Nat. 10th edit. i. p. 443 (1758) '. 
Acanthia erosa, Fabr. Spec. Ins. ii. p. 337 (1781) ?; Wolff, Icones Cimic. p. 89, t. 9. fig. 83 °. 
Phymata erosa, Latr. Hist. Nat. Crust. et Ins. xii. p. 245°; Westw. Trans. Ent. Soc, Lond. iii. 
p. 21, t. 2. figg. 8a-d*; Stal, Enum. Hemipt. v. p. 183°; Handl. Ann. k. k. naturhist. 
Hofmus. xii. p. 1597. 
Discomerus erosus, Laporte, Essai Class. Syst. Hémipt. in Guérin’s Mag. Zool. 1832, pp. 14, 87, 
t. 51. figg. 4 a-c *. 
Herr Hirdlirsch in his Monograph recognizes fifteen forms or subspecies of this 
abundant and very variable American insect, five only of which are found within our 
limits, the remainder, with the exception of one North-American form, being from 
South America or the Antilles. The five inhabiting our region are as follows :— 
Var. fasciata. (Tab. IV. figg. 1, ¢ ; 2, 2.) 
Syrtis fasciatus, Gray, in Griffith’s Anim. Kingd., Ins. ii. p. 242, t. 93. fig. 3*°. 
Syrtis erosa, Herr.-Schaff. Wanz. Ins. vii. p. 15, t. 222. fig. 694 (Sepiis crosa) ne 
Phymata erosa, Sanborn, Amer. Nat. i. p. 329, fig. 5». 
Phymata erosa, subsp. a, fasciata, Handl. Ann. k. k. naturhist. Hofmus. xii. p. 161, t. 5. fig. 8, t. 8. 
fig. 29 (head), t. 9. figg. 21, 22 (antenna) ». 
Phymata wolffii, Stal, Enum. Hemipt. v. p. 133. 
Hab. Norte America?! 13, Canadal2, United States 12,— Mexico? 3, Juarez 
(Cockerell), Atoyac (Schumann, H. H. Smith), Acaguizotla in Guerrero, Mexico city, 
Orizaba, Teapa (H. H. Smith), Temax in N. Yucatan (Gaumer); BrivisH Honpuras, 
Belize (Blancaneaux); Guatemata 12, Lanquin, San Juan, Sabo, and San Gerénimo in 
Vera Paz, Quezaltenango, Capetillo, Duefias (Champion); Nicaragua, Chontales 
(Janson) ; Panama, Volcan de Chiriqui (Champion). 
This is the commonest form of the species in Central America. It has the sides of 
the posterior lobe of the pronotum strongly foliaceous and raised, and produced into 
three acute teeth, the intermediate one being the longest and directed forwards; and 
the pronotal margins more or less granulate. Many of the males from Yucatan and 
Vera Paz have the entire pronotum nigro-fuscous and the transverse fascia on the 
abdomen black. The var. fasciata has been found in plenty in Yucatan, as well as in 
Chiriqui and elsewhere. A male from Capetillo and a female from Temax are figured. 
* Wrongly numbered at the bottom of the Plate. 
