CHIRONOMUS. 189 



white. Abdomen black; hind borders of the segments grey. Legs 

 black ; femora rather thick. Male. Antennas with black plumes. 

 Not common. (E.) 



168. tremulus, L. F. S. 1762 (1761) ; F. ; Gmel. j Meig. ; Mcq. ; 

 Zett. ; Stasg. Mas et Fcem. flavus, nitens, thorace vittis tribus nigris, 

 alis limpidis, venis albidis apud costam nigricantibus, halteribus albis, 

 abdomine nigro fascia basali jlava, pedibus albis, femoribus tibiisque 

 apice, tibiis basi tarsisque nigris. Long. 1-1 -|; alar. 3-4 lin. 



Male and Fern. Yellow, shining. Thorax with three black stripes. 

 Wings limpid; costal, radial, and cubital veins blackish, the rest whitish. 

 Halteres white. Abdomen black, with a yellow band at the base. Legs 

 white ; tarsi, femora, and tibiae at the tips and at the base black. Male. 

 Antennas with black plumes. Sutures of the abdominal segments 

 whitish. 



Generally distributed. (E. S. I.) 



169. motitator, L. Fn. Sc. 1760 (1761); F. ; Geoff.; Schr.; 

 Gmel. ; Latr. ; Lam. ; Meig. ; Mcq. ; Gim. ; Zett. ; Stasg. ; Eos. 

 bicinctiis? Meg.; Meig. Zw. i. 41. 48 (1818); Mcq.; Zett.; Gim. 

 dizonias, Meig. ; Stasg. Mas et Fcem. flavus, nitens, thorace vittis 

 tribus nigris, alis limpidis, venis albidis apud costam nigricantibus, 

 halteribus albis, abdomine nigro fasciis duabus flavis, pedibus albis, fe- 

 moribus tibiisque apice, tibiis basi tarsisque nigris. Long. 1-1^ ; alar. 

 3-3| lin. 



Male and Fern. Yellow, shining. Thorax with three black stripes. 

 Wings limpid ; costal, radial, and cubital veins blackish, the rest 

 whitish. Halteres white. Abdomen black, with two yellow bands, the 

 Jirst at the base, the second in the middle, occasionally subdivided. Legs 

 white ; tarsi, femora, and tibias at the tips, and tibias at the base, black. 

 Male. Antennas with black plumes. 



Generally distributed. (E. S. I.) 



170. sylvestris, F. E. S. iv. 252. 89 (1792); Meig.; Gim.; 

 Stasg. ; Bos. ; Zett. mbratorius, Meig. Kl. Zw. trifasciatiis ? Panz. ; 

 Meig. ; Stasg. ; Gim. ; Zett. ornatus ?, Meig. ; Stasg. tricinctus ? 

 Meig. ; Mcq. ; Gim. ; Stasg. ; Zett. Mas et Fcem. flavus, nitens, tho- 

 race vittis tribus latis nigris, alis limpidis, venis albidis apud costam 

 nigricantibus, halteribus pedibusque albis, femoribus tibiisque apice, 

 tibiis basi tarsisque nigris; Mas, abdomine nigro fasciis Jlavis ; Fcem. 

 abdomine flavo fasciis nigris. Long. 11^; alar. 3-4 lin. 



Male and Fem. Yellow, shining. Thorax with three broad black 

 stripes. Wings limpid ; costal, radial, and cubital veins blackish, the 

 rest whitish. Halteres white. Legs white ; tarsi, femora, and tibias 

 at the tips, and tibias at the base, black. Male. Antennas with black 

 plumes. Abdomen with three or more yellow bands. Fem. Abdomen 

 yellow, with short black bands. 



Generally distributed. (E. S. I.) 



