On the Later Embryological Stages of the Head of Pristhesancus papuensis. (Reduviidae)

Evolutionary Trends in Heteroptera. Part II. Mouthpart-Structures and Feeding Strategies

“…Saldidae, Nepomorpha (ELSON, 1937;PARSONS, 1959PARSONS, , 1966, Pyrrhocoris (BUGNION, 1911), Dysdercus (MCGILL, 1947), Anasa (TOWER, 1914), Lygus (AWATI, 1914), Calocoris (BARBAGALLO, 1970), Tingis (LIVINGSTONE, 1969)). Reduviidae, lacking tendons altogether, have muscles extending straight forward from the cibarial wall ; these muscles fan out to the head capsule without median splitting (Pristhesancus, MUIR & KERSHAW, 1911). Triatoma (BARTH, 1952) and Aquarius (Gerridae, BRINK-HURST, 1960), have the V-cross section without mediation of tendons; the muscles are inserted on a medio-longitudinal reinforcement of the cibarial wall.…”

Studies on the Anatomy of Cimex lectularius. I

“…Smith (1892) put forward the view that the two pairs of stylets and the proboscis are all parts of a single pair of appendages, corresponding to the second maxillae of the mandibulate insects. But more recent investigations by Marlatt (1896), Heymons (1896 and 1899), Muir and Kershaw (1911 and1912), and Davidson (1913 and have clearly shown that both in Heteroptera and Homoptera the inner or posterior pair of stylets and the outer or anterior pair represent respectively parts of the first maxillae and the mandibles while the proboscis represents the second pair of maxillae of mandibulate insects.…”