Enjijus Smith, 1990: 171-172. Type species: Acorduleceros megacephalus Benson, by original designation.
Citations
Smith 1990 [distribution (range), key: 155, 171-172]; Abe & Smith 1991 [systematics – classification: 29].
Biology
The single species is a shoot borer of Psidium (Smith, 1990).
Enjijus megacephalus (Benson)
Acorduleceros megacephalus Benson, 1940: 463-464. Type locality: Brazil: Pernambuco. Holotype male, by original designation. Type depository: BMNH. Described: male, female. Illust.
Enjijus megacephalus: Smith, 1990: 172. Change of combination.
Citations
Pyenson 1938 [distribution record, host plant: 26-27]; Pyenson 1939 [behaviour, impact/damage, oviposition: 468, pl. xv, fig. 2-3]; Carvalho & Carvalho 1941 [catalogue/checklist, host plant: 24]; Maxwell 1955 [distribution record, host plant, illustration of immature stages, internal anatomy (larva): 24-25, 27, 28]; Costa Lima 1968 [distribution (range), host plant: 622]; Quinlan 1974 [type information: 224]; Smith 1978 [catalogue/checklist, host plant: 178]; Smith 1990 [distribution (range), host plant, illustration of adult, illustration of lance/lancet, illustration of male genitalia, illustration of sawsheath, synonymy, taxonomy: 152, 172]; Schedl 1991 [economic importance, host plant: 47]; Smith 2006 [catalogue/checklist, host plant: 619].
Distribution
Neotropical: Brazil (Pernambuco [Pyenson 1938, Carvalho & Carvalho 1941, Costa Lima 1968, Smith 1978, Smith 1990, Smith 2006], São Paulo [Smith 1990, Smith 2006], Sergipe [Smith 1990, Smith 2006]).
Associations
Host – MYRTALES Myrtaceae: Psidium guajava L. [Pyenson 1938, Carvalho & Carvalho 1941, Maxwell 1955, Smith 1990, Schedl 1991, Smith 2006].
Biology
Pyenson (1938, 1939) gave an account of the biology of the species, known as “guava shoot-boring sawfly”: The female oviposits in young tips of guava stems where a single egg is deposited near the end of the tip. The young larvae burrow downwards inside the shoot. The gregarious larvae complete their development in about 9 days and bore a hole in the shoot to leave their feeding tunnel. They drop and enter the soil for pupation. Adults emerge after 9-17 days. Damage to guava was observed at the beginning of the rainy season.
Enjijus sp.
Citations
Smith 1990 [illustration of lance/lancet: 152].
Enjijus sp.
Citations
Smith 1990 [illustration of lance/lancet: 152].