1900 Brit. Med. Jrnl. No. 2041. 305A cheap *larvicidal substance..not injurious to the growth of the rice plants.
Ibid. 325The *larvicides are intended to be used for the destruction of mosquito larvæ and pupæ in pools and ditches.
Ibid. ,Professor Celli showed experiments at the Institute of Hygiene with certain insecticide and larvicide substances.
1848 Maunder Treas. Nat. Hist. 791*Larviform, shaped like a larva.
1891 C. L. Morgan Anim. Life 223The females of certain beetles..are described by Professor Riley as larviform.
1884 Stand. Nat. Hist. (1888) II. 428When ready to change into the *larvigerous pupæ they dislodge themselves. [ the maggots of the bot-fly]
1815 Kirby & Sp. Entomol. I. 103So Aristotle employs it, when he says that all insects produce a Scolex, or are *larviparous.
1826 Ibid. III. 65Larviparous, coming forth from the matrix in the state of larvæ.
1858 Lewes Sea-sideStud. 285The viviparous or larviparous generation effects a multiplication of the plant-lice adequate to keep pace with the rapid growth and increase of the vegetable kingdom in spring and summer.
1945 Public Health Rep. (U.S. ) LX. 1274Methods of control, such as *larviciding and drainage, are usually not applicable because of the high per capita cost.
1976 Kingston (Ontario) Whig-Standard 6 Apr. 6/2 The department of the environment estimates that larviciding costs annually $23 an acre (including start-up, training and license expenses).
1913 Rep. R.Soc. Sleeping SicknessComm. XIV. 11There is an inverse relation between relative humidity and rate of *larviposition.
1956 Ann. Trop. Med. &Parasitol. L. 66Larviposition occurred while the female was resting on the soil surface.
1989 Jrnl. Heredity LXXX. 73/2Flies from the F50 generation were reared from larviposition to adult eclosion at 15°C.
1889 Cent. Dict. ,*Larvivorous.
1915 Trans. Soc. Trop. Med. & Hygiene VIII. 78Willcocks, of Cairo, was the first to draw attention to the larvivorous habits of these useful insects.
1971 P. C. C. Garnham Progress inParasitol. vii. 124Desultory attention has been paid to biological control of mosquitoes, which started many years ago with the use of larvivorous fish.
larvi-
combining form
Etymology: New Latin, from larva
: larva : larval
< larvicolous >
< larviform >
< larvigerous >
< larvicolous >
< larviform >
< larvigerous >