INSECT A. 341 



Scatopse GEOFFR., MEIG., FABR. Antennae undecimarticulate, 

 perfoliate. Ocelli three. Palps very small, with a single joint. 



Sp. Scatopse notata, Tipula notata L., METGEN Europ. ziceifl. Ins. i. Tab. x. 

 fig. 13 ; DE GEEK Ins. vi. Tab. 28, figs, i 4, &c. 



Simulia MEIG., Simulium LATR. Antennas undecimarticulate, 

 monilifornij cylindrical or fusiform. Ocelli none. Palps quadri- 

 articulate. 



Small, but very troublesome species, with oral organs developed as in the 

 genus Oulex (according to the observations of CURTIS, cited by WESTWOOD, 

 Introd. ii. p. 558), but shorter. With these they prick, which the Tipulce, 

 on the contrary, do not. In the south of Hungary, in the Banat, Simulia, 

 maculata, Musca columbaschensis GMEL., is sometimes, from the enormous 

 numbers, very troublesome, and even dangerous. Here belongs also Simulia 

 pertinax KOLLAR, Brasiliens Idstige Insecten, fig. 14, which, under the 

 collective name of Musquitos (Mosquitos, Moustigues), is joined to the 

 gnats (Culices}. According to HUMBOLDT, in all the Spanish colonies these 

 last are not called Mosquitos, but Zancudos. In North America it seems 

 to be the Culices which are named Mosquitos, whilst the Simulice are dis- 

 tinguished from them as 'black flies.' 



ft Antennae longer than head, mostly of the length of head and 

 thorax together. Joints of antennse various, mostly twelve or 

 sixteen. 



Cecidomyia MEIG. Antennas with 12 or more joints, filiform, 

 porrect. Ocelli none. Wmo;s incumbent. 



o 



The larvae of many species live in excrescences of plants, like the gall- 

 wasps. Here belong Cecydomia destructor, the Hessian Fly of the North 

 Americans, and Cecidomyia tritici KIRBY in Linn. Trans, iv. p. 232, v. 

 p. 96, Tab. 4, fig. i. By such an insect, Cecidomyia salicina, those ex- 

 crescences also are caused, which are sometimes seen in the form of double 

 roses on the top of willow-branches. SWAMMERDAMM Bijbel der Natuur. 

 pp. 749, 750, Tab. XLIV. fig. 16 ; DE GEER Ins. vi. pp. 412 416. PI. 26, 

 figs, i 7 ; Cecid. Pini. Comp. RATZEBURG Forst. Insecten,, in. 1844. Taf. 

 x. fig. 14 ; ERICHSON'S Archivf. Naturgesch. 1841, s. 233 247. Taf. xi. &c. ; 

 L:EON DUFOUR Histoire des Metamorphoses des Cecidomies, &c. Ann. des 

 Sc. not., sec. Sdr. Torn. xvi. 1841, p. 257. 



Psychoda LATR., MEIG. (previously Trickoptera MEIG.) Antennas 

 porrect, moniliform, pilose, multiarticulate. Palps exsert, with 

 four equal joints. Ocelli none. Wings broad, pilose, furnished 

 with many longitudinal nervures. 



Sp. Psychoda phalcenoides, Tipula phalcenoides L., DE GEER Ins. vi. p. 422. 

 PI. 27, figs. 69 j MACQUART Diptcr. i. PL 4, fig. 12. This small (i line) 



