Table 1.

Summary of the total number of Laricobius spp. reproductive adults and larvae produced by Julian date at the Virginia Tech insectary and Pearson’s correlation for each year and species relating survivorship of emerging adults to date they first went into the soil

				Julian date of larvae drop						Survivorship vs. first day underground (Pearson’s correlation)
Year	Spp.	Fecund adults	Total larvae	Minimum	25%	50%	75%	Maximum	Mean no. ± SD	Soil containers (n)	Coefficient (r)	P-value
2004	LN	NA	24,803	20	62	93	112	159	88 ± 29.3	NA	NA	NA
2005	LN	713	19,285	95	123	133	152	192	137 ± 17.7	16	−0.18	0.483
2006	LN	1,067	13,205	102	126	144	156	214	143 ± 22.0	34	−0.13	0.47
2007	LN	1,231	40,912	72	121	133	145	190	133 ± 17.2	199	−0.41	<0.001*
2008	LN	1,200	45,985	72	128	139	158	198	140 ± 23.1	237	−0.47	<0.001*
2009	LN	1,230	32,009	86	123	135	145	202	135 ± 18.7	160	−0.76	<0.001*
2010	LN	1,070	38,352	76	114	127	138	196	126 ± 19.7	191	−0.55	<0.001*
2011	LN	300	8,039	93	117	132	149	199	134 ± 21.9	40	−0.81	<0.001*
	LO	1200	27,987	79	114	124	137	183	127 ± 18.4	40	−0.47	0.002*
2012	LN	245	2,823	72	109	125	144	191	129 ± 28.2	16	0.01	0.968
	LO	800	10,691	60	89	110	125	180	109 ± 26.6	86	0.03	0.752
2013	LN	470	11,561	84	109	123	139	171	124 ± 18.5	72	−0.31	0.008*
	LO	440	32,389	54	92	108	128	184	110 ± 24.4	176	−0.02	0.749
2014	LN	336	5,803	65	114	130	146	182	130 ± 21.2	31	−0.21	0.268
	LO	735	29,812	61	119	135	152	184	135 ± 23.0	162	−0.47	<0.001*
2015	LN	387	7,622	61	103	118	132	176	117 ± 21.3	43	−0.50	<0.001*
	LO	342	11,944	61	92	105	120	176	107 ± 21.8	76	−0.53	<0.001*
2016	LN	42	1,556	66	103	118	134	182	119 ± 23.4	14	−0.37	0.197
	LO	500	21,420	54	78	94	114	180	99 ± 22.1	204	−0.27	<0.001*
2017	LN	277	11,805	57	97	115	129	195	114 ± 26.8	63	−0.17	0.178
	LO	600	18,612	58	91	113	127	188	111 ± 25.8	145	−0.41	<0.001*
2018	LO	365	42,753	65	105	114	126	189	117 ± 18.6	201	0.05	0.453
2019	LN	NA	792	115	135	150	165	198	152 ± 20.8	4	0.83	0.17
	LO	578	14,535	99	123	138	159	213	142 ± 21.8	71	0.64	<0.001*
2004–2019	LN	8,594	264,552	76	112	128	143	190	128 ± 22.0	1120	−0.50a	<0.001* a
2011–2019	LO	5,560	210,143	66	100	116	132	186	117 ± 23.1	1161	−0.18a	<0.001* a
2004–2019	LN+LO	14,154	474,695	72	108	123	139	188	124 ± 22.4	–	–	–

LN = Laricobius nigrinus.

LO = Laricobius osakensis.

*Statistically significant P-value (<0.05).

n = total number of soil containers.

^aCalculated using Fisher’s z′ transformation.

– Analyses were not conducted.