Table 2. Statistics of contigs assembled of P. xylostella transcriptomes from male antennas.

Length Range(nt)	Transcripts	Unigenes
200–300	15,438(20.76%)	13,169(30.34%)
300–500	12,837(17.26%)	8,852(20.39%)
500–1000	15,165(20.39%)	8,536(19.67%)
1000–2000	15,674(21.07%)	6,864(15.81%)
2000+	15,260(20.52%)	5,984(13.79%)
Total Number	74,374	43,405
Total Length	93,290,340	42,674,647
N50 Length	2,215	1,875
Mean Length	1254.34	983.17

The unigene N50 length denotes the length of the fragment at which the cumulative length reaches 50% of the total length of all unigenes.