Table 2.

Species and sex composition of mosquitoes collected in BG-Sentinel and CDC light traps in Guangzhou, China

Study area	Species	Trap method								Sex ratio difference (P-value)b
		BG-sentinel trap				CDC light trap
		Total	Male	Female	F rate (95 % CI)a	Total	Male	Female	F rate (95 % CI)a
Tonghe (urban)	Number of trap days	864				864
	Aedes albopictus	6211	3641	2570	0.41 [0.40, 0.43]	1389	790	599	0.43 [0.41, 0.46]	0.23
	Culex quinquefasciatus	11,365	7588	3777	0.33 [0.32, 0.34]	8071	4758	3313	0.41 [0.40, 0.42]	< 0.0001
	Armigeres subalbatus	46	25	21	0.46 [0.32, 0.60]	83	49	34	0.41 [0.31, 0.52]	0.60
	Toxorhynchites splendens	1	1	0	n.a.	8	5	3	0.38 [0.14, 0.69]	n.a.
	Total No.	17,623	11,255	6368		9551	5602	3951
Liangtian (suburban)	Number of trap days	876				864
	Aedes albopictus	2181	1200	981	0.45 [0.43, 0.47]	385	195	190	0.49 [0.44, 0.54]	0.11
	Culex quinquefasciatus	18,442	12,517	5925	0.32 [0.31, 0.33]	31,288	16,233	15,055	0.48 [0.48, 0.49]	< 0.0001
	Armigeres subalbatus	152	91	61	0.40 [0.33, 0.48]	184	114	70	0.38 [0.31, 0.45]	0.70
	Toxorhynchites splendens	3	1	2	0.67 [0.21, 0.94]	14	10	4	0.29 [0.12, 0.55]	0.51
	Total No.	20,778	13,809	6969		31,871	16,552	15,319

^aF rate is defines as number of females over total

^bDifference between the two trap-types. χ ²-test or Fisher exact test if any number is < 5