SUBFAMILY IX. — ZELIN^E. 585 



aa. Disk of front lobe of pronotum armed only with tubercles; margins 

 of abdomen entire in both sexes (fig. 145, d) . 

 b. Ventrals, especially the fourth, without pale spots; membrane 

 without a dark median stripe on apical third ; basal joint of 

 antenna? with one or two pale rings ; general color reddish- 

 brown. 

 c. Segments of connexivum reddish-brown, the fourth and fifth not 

 conspicuously darker; basal pair of anteocular spines nearly 

 or fully twice as long as the apical pair (fig. 145, b) ; smaller, 

 length less than 12 mm. 559. SANGUISUGA. 



cc. Fourth and basal halves of fifth and sixth connexivals distinctly 

 darker than the others; basal pair of anteocular spines not 

 more than one-half longer than apical pair; larger, length 13 

 or more mm. 560. spinipes. 



bb. Lateral margins of ventrals each with a broad pale spot; apical 

 third of membrane usually pale with a dark median stripe; 

 basal joint of antennae not annulate with paler; general color 

 darker than in the two preceding species. 561. rileyi. 



558 (800). Sinea diadema (Fabricius), 1777, 302. 



Elongate, subparallel, male; abdomen much wider behind, female. 



Reddish- to dark fuscous-brown, sparsely clothed with fine yellowish 

 pubescence; hind lobe of head, front lobe of pronotum, 

 scutellum and membrane usually darker than remainder 

 of upper surface; connexivals dark brown with a pale 

 spot in front of each incisure; antennas pale brown, the 

 first joint darker at base; femora fuscous, tibiae and tarsi 

 paler; abdomen dull yellow mottled with fuscous. Front 

 lobes of both head and pronotum with numerous erect 

 spines of unequal length; hind lobe of head with several 

 Fig. 146, x 2. small tubercles and spines. Hind lobe of pronotum dense- 

 ly rugosely punctate, its disk, especially in female, bi- 



gibbous or with three wide shallow grooves separated by obtuse ridges, 



its hind margin fringed with short slender spines. Length, 12 — 14 mm. 



(Fig. 146). 



Common throughout Indiana, May 30 — Oct. 9. Dunedin, 

 Fla., Nov. 22. Evidently scarce in that State as but one has 

 been taken by me and it is recorded by Barber only from Bis- 

 cayne Bay. In Indiana it is our most common Reduviid, reach- 

 ing maturity in early June and in July and August swept by 

 scores from weeds and grasses along roadsides and fallow 

 fields. In autumn it is frequent on flowers of Composite, espe- 

 cially thistle and asters, where it has been seen feeding on plant 

 lice and other insect prey. Its known range includes Quebec, 

 Ontario, British Columbia and practically the entire United 

 States and Mexico. Ashmead (1895, 321) states that the eggs 



