Xylota segnis can reach a length of 10–14 millimetres (0.39–0.55 in) and has a wing length reaching 7–9.5 millimeters (0.28–0.37 in).
Thorax is greenish black, with long yellowish hairs. Abdomen is black with a large red or yellowish red patch. In particular, tergites 2 and 3 are yellow or reddish except for the back of tergite 3 which is black. Two rows of long and thick spines are present on hind femora. The front and the hind legs are predominantly yellow, with black or dark brown femora
The compound eyes are reddish and antennae are dark. The wings are slightly brownish with a brown pterostigma, the halteres are light yellow. In males on the hind trochanters there is a long upcurved pointed process. The male genitalia are figured by Hippa (1968).[7] The larva is illustrated in colour by Rotheray (1994) ).[8] See references for determination
Thorax is greenish black, with long yellowish hairs. Abdomen is black with a large red or yellowish red patch. In particular, tergites 2 and 3 are yellow or reddish except for the back of tergite 3 which is black. Two rows of long and thick spines are present on hind femora. The front and the hind legs are predominantly yellow, with black or dark brown femora
The compound eyes are reddish and antennae are dark. The wings are slightly brownish with a brown pterostigma, the halteres are light yellow. In males on the hind trochanters there is a long upcurved pointed process. The male genitalia are figured by Hippa (1968).[7] The larva is illustrated in colour by Rotheray (1994) ).[8] See references for determination
Attachments
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Xylota Segnis.jpg
