762 



HEMIPTERA 



GYMNOCERATA Fieber. 



The families of importance to us are: — 



Clinocoridse. 

 Reduviidae Stephens. 

 Aradidse. 

 Hydrometridae. 



These famihes can be diagnosed, according to Distant, in the 

 following manner: — 



A. Species not aquatic; abdomen not clothed beneath with a 



silvery, velvety pubescence; scutellum not reaching to the 

 base of the membrane nor to the middle of the abdomen. 



(1) Mesopleurae and metapleurae composed of one piece; 



hemelytra without cuneus. 



{a) Tarsi three-jointed. Rostrum short, stout, bent 

 at the base, so that in repose it does not lie 

 against under-surface of the head; ocelli behind 

 eyes; hemelytra complete with distinct mem- 

 brane — ReduviidcB. 



(b) Tarsi two-jointed, anterior legs normal and in- 

 serted on the disc of the prosternum. Hemelytra 

 neither reticulate nor cellular — Aradidce. 



(2) Mesopleurae and metapleurse composed of seven pieces; 



hemelytra with a cuneus and an embolium; ocelli 

 absent — Clinocoridce. 



B. Species aquatic or semi-aquatic; abdomen clothed beneath 



with a silvery velvety pubescence; antennae four-jointed — 

 HydromefridcB. 



Family Clinocorid^. 

 Synonym. — Acanthiadce. 



Definition. — Gymnocerata without ocelli, with elytra so short 

 that the abdomen is left uncovered. Tarsi three-jointed. 



Remarks. — This family contains the bugs as so called in medical 

 literature. There are eight genera — Clinocoris Petersonn, 1829; 

 (Eciacus Stal, 1873 ; Loxaspis Rothschild, 1912 ; Cacodmtts Stal, 1873 ; 

 Aphramia Champion, 1900; Hcematosiphon Champion, igoo; Bertili a 

 and Leptocimex Roubaud, 19 13 — and by some authorities these are 

 gathered into two subfamilies, CUnocorincB and HcBmatosiphonincB, 

 with about twenty species in all, of which twelve are parasitic 

 on bats. 



Clinocorin^. 

 Clinocoris Petersonn, 1829. 



Synonyms. — Cim.ex Linnaeus, 1758; Acanthias Fabricius, 1803; 

 Klinophilos Kirk, 1899. 



Nomenclature. — Koris Aristotle; Cimex Pliny. 



