taxonID	type	description	language	source
039AA809FFBA9323FF24FD73FCAFE90D.taxon	description	Figs 1 – 6, 11	en	Jaitrong, W., Wiwatwitaya, D., Yamane, Sk. (2020): FIRST RECORD OF THE ANT GENUS SYSCIA ROGER, 1861 (HYMENOPTERA: FORMICIDAE) FROM THAILAND, WITH DESCRIPTIONS OF TWO NEW SPECIES. Far Eastern Entomologist 411: 1-9, DOI: 10.25221/fee.411.1, URL: http://dx.doi.org/10.25221/fee.411.1
039AA809FFBA9323FF24FD73FCAFE90D.taxon	materials_examined	TYPE MATERIAL. Holotype – worker (THNHM-I- 05483, THNHM), W Thailand: Tak Province, Umphang District, Thung Yai Wildlife Sanctuary, Kangae Ki, Head Quarter, 26. II 2016, W. Jaitrong leg., Colony no. TH 16 - WJT- 0145. Paratypes: twenty workers, same data as holotype (THNHM-I- 05484, THNHM-I- 19536 to THNHM-I- 19551, and THNHM-I- 20300 to THNHM-I- 20302, MHNG, SKYC, THNHM); nine workers, same colony as holotype collected by Sk. Yamane, TH 16 - SKY- 113 (SKYC, THNHM). OTHER MATERIAL EXAMINED. W Thailand: 2 workers, Tak Province, Umphang District, Thung Yai Wildlife Sanctuary, Huai Nam Kheao, 23. VI 2015, W. Jaitrong leg. (THNHM). Central Thailand: 12 workers (THNHM-I- 14185, SKYC, THNHM) and 1 dealate queen (THNHM-I- 14186, THNHM), Nakhon Nayok Province, Muaeng District, Khlong Maduea, 28. X 2019, W. Jaitrong leg., colony no. TH 19 - WJT- 10; 5 workers (THNHM-I- 14187, THNHM), Nakhon Nayok Province, Pak Phli District, Na Hin Lat, Wang Muang Waterfall, 30. X 2019, W. Jaitrong leg., TH 19 - WJT- 32. DESCRIPTION. WORKER (Figs 1 – 3, 11) MEASUREMENTS. Holotype: HL 0.66; HW 0.53; SL 0.30; MW 0.43; ML 0.86; PL 0.33; PH 0.36; PW 0.33; PPL 0.46; PPH 0.43; PPW 0.46; CI 80; SI 56; PI 1 91; PI 2 100; PPI 1 108; PPI 2 100; WI 140. Paratype workers (n = 10): HL 0.56 – 0.66; HW 0.46 – 0.53; SL 0.26 – 0.33; MW 0.36 – 0.43; ML 0.76 – 0.86; PL 0.26 – 0.33; PH 0.30 – 0.36; PW 0.26 – 0.33; PPL 0.40 – 0.43; PPH 0.36 – 0.43; PPW 0.40 – 0.46; CI 80 – 84; SI 56 – 63; PI 1 89 – 91; PI 2 100; PPI 1 100 – 109; PPI 2 100 – 108; WI 130 – 150. Size and color. Medium size (HW 0.46 – 0.50 mm; ML 0.76 – 0.86 mm). Body entirely reddish brown; antenna, legs and tip of gaster yellowish brown. Hairs yellowish brown. in profile view; 2 – head in full-face view; 3 – body in dorsal view. Structure. Head in full - face view rectangular, slightly longer than broad with almost parallel sides; posterior margin weakly concave. Antenna 11 - segmented with enlarged apical segment (XI) which is longer than VI – X combined; scape short, not reaching mid - length of head in full - face view; antennal segment II almost as long as broad; III – VI broader than long. Frontal carinae short and narrow, reaching less than half length of head, with head in profile sharply elevated in anterior half, low and vestigial in posterior half. Clypeus short, its anterior margin almost straight. Compound eye and ocelli completely absent. Mandible triangular, its masticatory margin feebly concave and edentate. Mesosoma rather elongate, subrectangular, seen from above almost parallel - sided; in profile view, dorsal outline of mesosoma straight; promesonotal suture and metanotal groove absent; mesopleuron demarcated from lateral face of pronotum and mesonotum by a distinct suture, but not clearly demarcated from metapleuron. Propodeum relatively long; declivity feebly concave, encircled with a thin rim. Petiole in dorsal view rectangular, slightly longer than broad, almost parallel - sided; in profile view, petiolar node (excluding sternite) longer than high, subrectangular, with weakly convex dorsal outline; subpeiolar process in profile view, subrectangular with its ventral outline concave. Postpetiole in dorsal view clearly larger than petiole, subrectigular, slightly longer than broad; in profile view longer than high, its dorsal outline weakly convex; postpetiolar sternite in profile view low, with ventral margin almost straight, anteroventrally produced as a blunt angle directed downward and forward. Abdominal tergite IV (= first gastral tergite) elongate, in dorsal view almost parallel-sided, its anterior margin almost straight. Sculpture. Entire body densely with well-defined macropunctures (Figs 1 – 3, 11). Antennal scape, outer face of mandible and legs with dense fine micropunctures. Legs slightly smooth and shiny. Pilosity. Body entirely covered with short decumbent and standing hairs. DEALATE QUEEN (Figs 4 – 6). MEASUREMENTS. Non-type: HL 0.66; HW 0.56; SL 0.33; MW 0.56; ML 1.06; PL 0.36; PH 0.36; PW 0.36; PPL 0.46; PPH 0.46; PPW 0.50; CI 85; SI 59; PI 1 100; PI 2 100; PPI 1 100; PPI 2 107; WI 136. Similar to worker in structure, sculpture and pilosity, with the following conditions that should be noted: body slightly larger; head in full-face view subrectangular, slightly longer than broad; eye present, relatively large, its length almost as long as distance between mandibular base and anterior margin of eye; median ocellus as large as lateral ocelli and located at the level of posterior margin of eyes; mesosoma massive and long, in profile view, with almost straight dorsal outline; mesopleuron broad, demarcated from pronotum and mesopleuron by shallow sutures, without oblique mesopleural sulcus; propodeum relatively short; in dorsal view, pronotum relatively long, with anterior margin roundly convex, posterior margin strongly concave, and lateral margins parallel; parapsidal line distinct but relatively short; mesoscutum flat, trapezoidal, its anterior margin strongly convex, while posterior margin almost straight; mesoscutellum subrectangular, almost as long as propodeum; metanotum very short, represented as a ridge; petiole square, with almost parallel lateral margins; postpetiole subrectangular, slightly longer than broad and broadened posteriorly. REMARKS. Syscia chaladthanyakiji is similar to a Sri Lankan species, Syscia typhala, in general appearance of workers. However, S. chaladthanyakiji is sepa- rated from S. typhla by 1) in dorsal view, petiole and postpetiole almost as long as broad (clearly longer than broad in S. typhla); 2) with mesosoma in profile view, dorsal outline straight (weakly convex in S. typhla); 3) head relatively shorter (CI 80 – 84 in S. chaladthanyakiji; CI 70 in S. typhla); 4) stronger sculpturing than in S. typhla. HABITAT. The type series from western Thailand and the colony no. TH 19 - WJT- 10 from eastern Thailand nested in rotting wood on the forest floor. This new species inhabits primary forests from lowland to highland (250 – 1000 m). DISTRIBUTION. Thailand (Tak and Nakhon Nayok Provinces). ETYMOLOGY. The specific name is dedicated to Mr Chaiyarest Chaladthanyakij (Uthaiwitthayakhom School, Thailand), who helped us in ant collecting in Uthai Thani and Tak Provinces. profile view; 5 – body in dorsal view; 6 – head in full-face view.	en	Jaitrong, W., Wiwatwitaya, D., Yamane, Sk. (2020): FIRST RECORD OF THE ANT GENUS SYSCIA ROGER, 1861 (HYMENOPTERA: FORMICIDAE) FROM THAILAND, WITH DESCRIPTIONS OF TWO NEW SPECIES. Far Eastern Entomologist 411: 1-9, DOI: 10.25221/fee.411.1, URL: http://dx.doi.org/10.25221/fee.411.1
039AA809FFBD932EFF24FACAFC8AEF55.taxon	description	Figs 7 – 10	en	Jaitrong, W., Wiwatwitaya, D., Yamane, Sk. (2020): FIRST RECORD OF THE ANT GENUS SYSCIA ROGER, 1861 (HYMENOPTERA: FORMICIDAE) FROM THAILAND, WITH DESCRIPTIONS OF TWO NEW SPECIES. Far Eastern Entomologist 411: 1-9, DOI: 10.25221/fee.411.1, URL: http://dx.doi.org/10.25221/fee.411.1
039AA809FFBD932EFF24FACAFC8AEF55.taxon	materials_examined	TYPE MATERIAL. Holotype – worker (THNHM-I- 02624), S Thailand: Nakhon Si Thammarat Province, Noppitam District, Krung Ching Waterfall, 20. V 2003, W. Jaitrong leg., Colony no. WJT 03 - TH- 332 (THNHM). Paratypes: ten workers, same data as holotype (THNHM-I- 02625, THNHM-I- 19552 to THNHM-I- 19559, and gkhla Province, Had Yai District, Prince of Songkhla University forest, 17. III 2007, Sk. Yamane leg., Colony no. TH 07 - SKY- 74; One worker (THNHM), Malaysia: Malay Peninsula, Selangor, Ulu Gombak, Maschwitz valley, 5. X 2002, Sk. Yamane leg. profile view; 8 – head in full-face view; 9 – body in dorsal view.	en	Jaitrong, W., Wiwatwitaya, D., Yamane, Sk. (2020): FIRST RECORD OF THE ANT GENUS SYSCIA ROGER, 1861 (HYMENOPTERA: FORMICIDAE) FROM THAILAND, WITH DESCRIPTIONS OF TWO NEW SPECIES. Far Eastern Entomologist 411: 1-9, DOI: 10.25221/fee.411.1, URL: http://dx.doi.org/10.25221/fee.411.1
039AA809FFBD932EFF24FACAFC8AEF55.taxon	description	DESCRIPTION. WORKER (7 – 9). MEASUREMENTS. Holotype: HL 0.63; HW 0.50; SL 0.30; MW 0.40; ML 0.73; PL 0.30; PH 0.40; PW 0.30; PPL 0.36; PPH 0.43; PPW 0.36; CI 79; SI 60; PI 1 75; PI 2 100; PPI 1 85; PPI 2 100; WI 122. Paratypes (n = 7): HL 0.56 – 0.63; HW 0.46 – 0.50; SL 0.26 – 0.33; MW 0.36 – 0.40; ML 0.73 – 0.76; PL 0.28 – 0.30; PH 0.40; PW 0.30 – 0.33; PPL 0.36 – 0.38; PPH 0.41 – 0.43; PPW 0.36; CI 79 – 82; SI 57 – 67; PI 1 71 – 75; PI 2 100 – 111; PPI 1 85 – 88; PPI 2 96 – 100; WI 110 – 122. Size and color. Medium size (HW 0.46 – 0.50 mm; ML 0.73 – 0.76 mm). Body dark reddish brown; legs and antenna paler. Hairs pale brown. Structure. Head in full-face view elliptical, longer than broad; lateral margin convex; posterior margin almost straight. Antenna 11 - segmented with enlarged apical segment (XI) which is almost as long as IV – X combined; scape short, when folded back reaching mid-length of head in full-face view; antennal segment II almost as long as broad; III – VI broader than long. Frontal carinae short and narrow, reaching less than half length of head, in profile sharply elevated in anterior half, low and vestigial in posterior half. Parafrontal ridge prominently produced anteriad in dorsal view. Clypeus short, its anterior margin weakly convex. Compound eye and ocelli completely absent. Mandible triangular, its masticatory margin with a series of in- conspicuous small denticles. Mesosoma rather robust, subrectangular, seen from above almost parallel - sided; with mesosoma in profile view, dorsal outline weakly convex; promesonotal suture and metanotal groove completely absent; mesopleuron not demarcated from metapleuron. Propodeal declivity flat, encircled with indistinct rim. Petiole in dorsal view almost as long as broad, almost parallel - sided; in profile view, petiole including subpetiolar process clearly shorter than high, subrectangular, convex dorsally, with flattened anterior face. Subpeiolar process in profile subrectangular with its ventral outline concave. Postpetiole in dorsal view slightly larger than petiole, subrectigular, slightly longer than broad; in profile view, postpetiole slightly shorter than high, its dorsal outline weakly convex. Postpetiolar sternite in profile view low, its ventral margin convex; anteroventrally produced as a blunt angle directed downward and forward. Abdominal tergite III (= first gastral tergite) elongate - oval; in dorsal view, its anterior margin clearly concave and lateral margins convex. Sculpture. Entire body finely reticulate with deep bottoms (Figs 7 – 10). Antennal scape, outer face of mandible and legs punctate. Pilosity. Body entirely covered with long decumbent and standing hairs.	en	Jaitrong, W., Wiwatwitaya, D., Yamane, Sk. (2020): FIRST RECORD OF THE ANT GENUS SYSCIA ROGER, 1861 (HYMENOPTERA: FORMICIDAE) FROM THAILAND, WITH DESCRIPTIONS OF TWO NEW SPECIES. Far Eastern Entomologist 411: 1-9, DOI: 10.25221/fee.411.1, URL: http://dx.doi.org/10.25221/fee.411.1
039AA809FFBD932EFF24FACAFC8AEF55.taxon	discussion	REMARKS. Syscia reticulata is a distinct species. It can be distinguished from others species by the following characteristics: body entirely reticulate, with deep bottoms (body covered with punctures or shallow fovea in other species); petiole slightly smaller than postpetiole; in profile view postpetiole rounded. HABITAT. The type series was collected from a rotting wood on the forest floor in a lowland rainforest.	en	Jaitrong, W., Wiwatwitaya, D., Yamane, Sk. (2020): FIRST RECORD OF THE ANT GENUS SYSCIA ROGER, 1861 (HYMENOPTERA: FORMICIDAE) FROM THAILAND, WITH DESCRIPTIONS OF TWO NEW SPECIES. Far Eastern Entomologist 411: 1-9, DOI: 10.25221/fee.411.1, URL: http://dx.doi.org/10.25221/fee.411.1
039AA809FFBD932EFF24FACAFC8AEF55.taxon	distribution	DISTRIBUTION. Thailand (Nakhon Si Thammarat Province) and Malaysia (W Malaysia).	en	Jaitrong, W., Wiwatwitaya, D., Yamane, Sk. (2020): FIRST RECORD OF THE ANT GENUS SYSCIA ROGER, 1861 (HYMENOPTERA: FORMICIDAE) FROM THAILAND, WITH DESCRIPTIONS OF TWO NEW SPECIES. Far Eastern Entomologist 411: 1-9, DOI: 10.25221/fee.411.1, URL: http://dx.doi.org/10.25221/fee.411.1
039AA809FFBD932EFF24FACAFC8AEF55.taxon	etymology	ETYMOLOGY. The species epithet “ reticularis ” is a Latin word meaning reticulate. This refers to the finely reticulate body of this species.	en	Jaitrong, W., Wiwatwitaya, D., Yamane, Sk. (2020): FIRST RECORD OF THE ANT GENUS SYSCIA ROGER, 1861 (HYMENOPTERA: FORMICIDAE) FROM THAILAND, WITH DESCRIPTIONS OF TWO NEW SPECIES. Far Eastern Entomologist 411: 1-9, DOI: 10.25221/fee.411.1, URL: http://dx.doi.org/10.25221/fee.411.1
