Structure and function of subterranean gallery systems of soilfeeding termites Pericapritermes nitobei and Sinocapritermes mushae Supplementary material C.-I. Chiu • M.-M. Yang • H.-F. Li (Corresponding author) C.-I. Chiu Department of Entomology, National Chung Hsing University, 250 Guoguang Rd., Taichung 40227, Taiwan E-mail: tim77918@msn.com M.-M. Yang Department of Entomology, National Chung Hsing University, 250 Guoguang Rd., Taichung 40227, Taiwan E-mail: mmy.letsgall@gmail.com Telephone: 886-4-2284-0361 Fax: 886-4-2287-8490 H.-F. Li Department of Entomology, National Chung Hsing University, 250 Guoguang Rd., Taichung 40227, Taiwan E-mail: houfeng@nchu.edu.tw Telephone: 886-4-2287-5567 Fax: 886-4-2287-5567 Table S1. Summary of five gallery systems of P. nitobei: study site information, node properties, and distribution of termite castes. Gallery system Coordinates Underground object Cell surface material No. of nodes Depth (cm) No. of examined workers (forager proportion) PN1 (Dakeng, Taichung City) 24.1934°N; 120.7989°E Fibrous root Stone, fibrous root Stone, fibrous root Thick root, fibrous root Thick root, fibrous root Fibrous root Thick root Fibrous root Stone, fibrous root Fibrous root Stone, fibrous root Stone, fibrous root Fibrous root Thick root, fibrous root Earthen Earthen Plastered Earthen Plastered Earthen Plastered Earthen Earthen Earthen Earthen Plastered Earthen Plastered 14 3 1 4 1 17 6 17 7 3 7 6 1 1 2.5 ± 0.8 3.3 ± 0.6 8.8 9.7 ± 1.3 11.0 3.2 ± 3.0 10.8 ± 2.9 3.5 ± 1.6 13.7 ± 10.0 3.0 ± 2.0 5.9 ± 3.9 8.8 ± 3.3 1.0 11.0 230 (61.7 %) 55 (23.6 %) 18 (33.3 %) 34 (35.3 %) 15 (6.7 %) 267 (64.4 %) 45 (33.3 %) 266 (53.8 %) 140 (35.7 %) 60 (58.3 %) 116 (35.3 %) 109 (40.4 %) 19 (78.9 %) 20 (20.0 %) PN2 (Ermei, Hsinchu City) PN3 (Huisun, Nantou City) PN4 (Huisun, Nantou City) 24.6986°N; 120.9953°E 24.0916°N; 121.0351°E 24.0897°N; 121.0365°E PN5 (Huisun, Nantou City) 24.0894°N; 121.0351°E a L, larvae; E, egg; K, king; Q, queen. No. of nodes with nursed castesa L: 1 L: 1, E: 1 L: 4, E: 3 L: 1, E: 1, Q: 1 L: 2 L: 2 L: 2 L: 6 L: 6, K: 1 L: 1, E: 1, K: 1, Q: 1 Table S2. Summary of seven gallery systems of S. mushae: study site information, node properties, and distribution of termite castes. Gallery system Coordinates Underground object Cell surface material No. of nodes Depth (cm) No. of examined workers (forager proportion) SM1 (Dakeng, Taichung City) 24.1934°N; 120.7989°E Wood Fibrous root No object Stone Stone, fibrous root Thick root Thick root, fibrous root Fibrous root Stone Wood Thick root No object Stone Wood Stone Thick root Wood Thick root Wood Stone Wood Thick root No object Earthen Earthen Earthen Earthen Earthen Earthen Earthen Earthen Earthen Earthen Earthen Plastered Earthen Earthen Earthen Earthen Earthen Earthen Earthen Earthen Earthen Plastered Earthen 5 5 4 6 1 1 2 2 2 2 2 5 3 2 2 5 1 2 1 7 1 2 1 10.4 ± 4.2 6.6 ± 3.8 10.1 ± 4.1 12.8 ± 3.3 4.0 9.0 8.0 5.0 4.5 10.5 15.0 5.4 ± 4.3 4.2 ± 2.5 12.0 5.0 7.8 ± 6.2 4.0 10.5 2.0 7.9 ± 5.5 3.0 7.5 11.0 95 (71.6 %) 100 (38.0 %) 80 (50.0 %) 120 (49.2 %) 20 (25.0 %) 20 (35.0 %) 35 (31.4 %) 22 (22.7 %) 39 (28.2 %) 29 (62.1 %) 27 (48.1 %) 59 (45.8 %) 59 (35.6 %) 40 (64.0 %) 40 (35.0 %) 100 (51.0 %) 20 (85.0 %) 36 (50.0 %) 20 (50.0 %) 88 (35.2 %) 20 (85.0 %) 40 (42.5 %) 20 (40.0 %) SM2 (Huisun, Nantou City) SM3 (Huisun, Nantou City) 24.0897°N; 121.0365°E 24.0910°N; 121.0302°E SM4 (Huisun, Nantou City) 24.0784°N; 121.0298°E SM5 (Huisun, Nantou City) SM6 (Fushan, New Taipei City) SM7 (Tungmaoshan, Taichung City) 24.0859°N; 121.0277°E 24.7611°N; 121.5834°E 24.1383°N; 120.9620°E a L, larvae; E, egg; K, king; Q, queen. No. of nodes with nursed castesa L: 3, E: 1 L: 2 L: 1 L: 2 L: 1, E: 1 L: 2, E: 1 L: 3 L: 1, E: 1 L: 4, E: 3 L: 2, E: 2, K: 1 L: 1, E: 1 Table S3. Locating the feeding sites of two soil-feeding termites, P. nitobei and S. mushae. The associations between occurrence of underground objects and forager proportion were analyzed by using linear mixed-effects (LME) models. Dependent variable Species Forager prop. Likelihood ratio test χ2 p value P. nitobei 30.08 <0.001 S. mushae 27.82 <0.001 Independent variable Intercept Fibrous roots Intercept Fibrous roots Wood Wald statistic Coef. Z p value 0.34 0.24 0.41 -0.04 0.31 3.92 4.41 13.51 0.52 4.73 <0.001 <0.001 <0.001 0.6 <0.001 Table S4. Locating the nesting sites of P. nitobei and S. mushae. The associations between occurrence of underground objects and the nursed castes, larvae and eggs were analyzed by using generalized linear mixed models. Species P. nitobei Dependent variable Larva Egg S. mushae Larva Egg Likelihood ratio test χ2 p value 1.30 20.44 6.85 0.06 16.33 0.01 1.17 1.87 0.47 0.60 2.74 2.42 0.26 0.87 0.7599 <0.01 <0.05 1 <0.01 1 0.8379 0.5136 1 1 0.2940 0.3585 1 1 Independent variable Fibrous roots Thick roots Stone Fibrous roots Thick roots Stone Fibrous roots Thick roots Stone Wood Fibrous roots Thick roots Stone Wood Wald statistic Coef. Z p value -1.29 4.68 1.77 29.10 5.06 -0.12 -0.86 0.85 -0.39 -0.55 -15.17 1.45 -0.47 -1.04 -1.18 2.89 2.68 0.11 3.06 -0.09 -1.02 1.37 -0.68 -0.75 -0.02 1.53 -0.49 -0.85 0.717 <0.05 <0.05 1 <0.05 1 0.924 0.510 1 1 1 0.378 1 1 Table S5. The association between feeding and nesting sites of P. nitobei and S. mushae. The correlations between occurrence of nursed caste and forager proportion were analyzed by using generalized linear mixed models. Dependent variable Species Nursed caste Likelihood ratio test χ2 p value P. nitobei 10.17 <0.01 S. mushae 2.33 0.1268 Independent variable Intercept Forager prop. Intercept Forager prop. Wald statistic Coef. Z p value 0.73 -3.55 0.17 -1.82 0.88 -2.71 0.29 -1.49 0.378 <0.01 0.770 0.137