346 Syrphidae. 



F. A. I, 317 (Melithreptus). — 1901. Verr. Brit. Fl. VIII, 434,2. — 1907. 

 Kat. palåarkt. Dipt. III, 74. — Scaeva interrupta Fabr. 1805. Syst. Antl. 

 252, 16 ?. 



var. dubia Zett. 1849. Dipt. Scand. VIII, 3162, 7-8 et 1859. XIII. 

 6009, 7—8. 



var. picta Meig. 1822. Syst. Beschr. III, 326. 77 (Syrphus). ~ 1843. 

 Zett. 1. c. II, 772, 7 et 1849. VIII, 3161, 7 et 1859. XIII, 6007, 7. — 1862. 

 Schin. F. A. I, 317 (Melithreptus). — Sph. ahhreviata Zett. 1859. 1. c. XIII, 

 6007, 7—8. 



var. philanthus Meig. 1822. 1. c. III, 327, 79 (Syrphus). — 1843. Zett. 

 1. c. II, 773, 8 et 1849. VIII, 3163, 8. — Syrphus melissae Meig. 1822. 

 1. c. III, 326, 76. — Sph. melissae 1843. Zett. 1. c. II, 770, 5 et 1849. VIII, 

 3161, 5. — Melithreptus melissae 1862. Schin. F. A. 1, 318. — Syrphus 

 hieroglyphicus Meig. 1822. 1. c. III, 327, 78. — Melithreptus incisus Loew, 

 1840. Programm Posen, 57, 4, Fig. 55 et Isis 1840, 573, 4, Fig. 55. — 

 1862. Schin. F. A. I, 318. — Sph. multipunctata Zett. 1859. 1. c. XIII, 

 6009, 10. — Sph. insignita Zett. 1859. 1. c. XIII, 6010, 11. 



var. taeniata Meig. 1822. 1. c. III, 325, 74. Tab. XXX. Fig. 35—36 

 (Syrphus). — 1943. Zett. 1. c. II, 768, 3 et 1849. VIII, 3160. 3. — Meli- 

 threptus taeniatus 1862. Schin. F. A. I, 318. 



Male. Vertex triangular; frons and epistoma yellow, shining, the 

 front mouth edge narrowly black and often the central knob blackish, 

 or a blackish middle stripe present. Jowls yellow or greyish, or even 

 darker. Vertex black-haired ; frons and epistoma yellow-haired, on 

 the latter the hairs short, sparse and inconspicuous. Occiput greyish 

 pruinose, the hairs whitish below, yellow upwards, in the middle 

 somewhat strong, but not so much as in scripta. Antennæ yellow, 

 third joint generally more or less darkened above; arista brown. 

 Thorax æneous, duU or dullish, with three more or less visible, duller 

 stripes, the greyish lines between them very faint or not visible; at 

 the sides there is a yellow line from the humeri to scutellum, but it 

 is darker and less distinct behind the transverse furrow. The thorax 

 is clothed with somewhat long and dense, yellow or brownish yellow 

 hairs, denser than in scripta. Scutellum yellow, black-haired and the 

 hairs rather dense and somewhat strong, distinctly stronger than in 

 scripta-, often the hairs are more or less yellow on the basal part, 

 sometimes to some extent. Pleura æneous, shining, with yellow spots 

 as in scripta., and with longish, yellow hairs. Abdomen shorter than 

 in scripta, about of the length of the wings or slightly longer; it, is 

 duU black with yellow markings, but rather shining at the sides and 

 generally more or less at the incisures, and somewhat shining at base 

 and apex. The second segment has a yellow band on the middle. 

 which is narrowly interrupted and much sloped off at the sides so 

 that the hind corners only indistinctly reach the side margin or not 

 at all ; the band on third segment is broader, nearer the front margin 



