taxonID	type	description	language	source
03BCCE673A51FFB9AB9D5224FC5F90A1.taxon	description	(Figs. 1 – 2, 7 & Table S 2)	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A51FFB9AB9D5224FC5F90A1.taxon	materials_examined	Mounted specimens: Body oval (Fig. 1 A), 2.84 – 3.34 mm long, 1.67 – 2.13 times as long as its width. Antennal segments I-II and V-VI, distal 1 / 2 of antennal segments III-IV, apex of ultimate rostral segment, coxae, distal 2 / 3 of femora, most of tibiae and siphunculi dark brown; dorsum of head and thorax, basal 1 / 2 of antennal segments III-IV, basal 1 / 3 of femora and second tarsal segments brown; remaining part of rostrum and leg, cauda and other part pale brown. Brown sclerites on abdomen always present (Fig. 1 C), Abdominal tergites I-VII each with 1 pair of marginal sclerites and 1 pair of spinal sclerites; tergite VIII with 1 pair of marginal sclerites and 2 pairs spinal sclerites; pleural sclerites small and irregularly placed on each tergite. Setae on body dorsum long and pointed. Dorsum of head with 11 – 14 setae, up to 0.26 mm long; abdominal setae 0.11 – 0.29 mm long, spinal sclerites with 1 – 3 setae, pleural sclerites with 1 seta, marginal sclerites with 8 – 13 setae. Head. Frons flat, eyes with numerous facets (Fig. 1 B). Antennae 6 - segmented (Fig. 1 D), long, with imbrications on segments III – VI, 0.5 – 0.71 times as long as body. Processus terminalis 1.5 – 2.33 times as long as basal part of the last antennal segment; other antennal ratios: VI: III 0.49 – 0.71, V: III 0.43 – 0.58, IV: III 0.47 – 0.71. Segment I with 5 – 11 setae, segment II with 3 – 5 setae, segment III with 24 – 37 setae, segment IV with 9 – 14 setae, segment V with 7 – 12 setae, base of segment VI with 2 setae, processus terminalis with 3 – 4 apical setae. The setae of antenna fine and pointed, outer setae much longer than inner setae on segment III, up to 0.19 mm long. Length of longest seta on segment III 3.17 – 3.8 times as long as basal articular diameter of the segment. Rostrum reaching over middle coxae (Fig. 1 E). Apical segment of rostrum with 7 – 10 setae, 0.19 – 0.27 times as long as antennal segment III, 0.68 – 0.88 times as long as second hind tarsal segment. The full length of processus terminalis of 6 th antennal segment arrays annular secondary sensoria.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A51FFB9AB9D5224FC5F90A1.taxon	description	Thorax. Legs normal and setose. Hind tibiae bearing pointed, long and rigid setae, which are 0.09 – 0.23 mm long. Distal part of hind tibiae with few rows of stout spinules. Hind tibiae 0.47 – 0.59 times as long as body. First tarsal chaetotaxy: 5, 5, 5, sometimes 4, 5, 5, or 5, 5, 4 (Fig. 1 H). Second hind tarsal segment with 9 – 12 setae and 0.23 – 0.3 times as long as antennal segment III. Abdomen. Siphunculi 0.1 – 0.18 mm long, with 3 – 7 rows of subapical reticulations and slightly flared apex (Fig. 1 F), widest diameter 3.2 – 5.6 times as long as basal diameter of antennal segment III. Cauda broadly rounded, 0.28 – 0.5 times as long as its basal width, with 36 – 48 long and short setae (Fig. 1 G). Alate viviparous female (n = 6). Body yellow, cover with numerous long and pointed setae, dark brown dorsal cross-bars on abdominal tergites in life (Fig. 7 B).	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A51FFB9AB9D5224FC5F90A1.taxon	materials_examined	Mounted specimens: Body elongated (Fig. 2 A), 2.88 – 3.21 mm long, 2.18 – 2.71 times as long as its width. Dorsum of head and thorax, antennal segments I-II, distal 1 / 3 of antennal segments III, antennal segments IV-VI, coxae, distal 2 / 3 of hind femora, tibiae and siphunculi dark brown; basal 2 / 3 of antennal segments III, apex of ultimate rostral segment, wing veins, basal 1 / 3 of femora, second tarsal segments brown; cauda and remaining parts of body slightly paler. Dorsal head and thorax sclerotized, abdominal tergites cover with large fused spinal sclerites and oval marginal sclerites, pleural sclerites small and irregular placed (Fig. 2 C). Tergites I-VIII each with 1 spinal band and 1 pair of marginal sclerites. Dorsal setae of body long and pointed. Head with 10 – 14 dorsal setae, up to 0.18 mm long; abdominal setae 0.24 mm long, spinal sclerites with 10 – 23 setae, pleural sclerites with 1 seta, marginal sclerites with 8 – 13 setae. Head. Frons flat, eyes with numerous facets (Fig. 2 B). Antennae 6 - segmented (Fig. 2 D), long, with imbrications on segments III-VI, 0.6 – 0.69 times as long as body. Processus terminalis 1.87 – 2.73 times as long as base of the segment VI; other antennal ratios: VI: III 0.62 – 0.66, V: III 0.45 – 0.49, IV: III 0.52 – 0.6. Segment I with 6 – 10 setae, segment II with 4 setae, segment III with 21 – 26 setae, segment IV with 9 – 16 setae, segment V with 8 – 11 setae, base of segment VI with 2 setae, processus terminalis with 4 apical setae. Antennal setae long and pointed, up to 0.13 mm long. Longest seta on segments III 2.17 – 2.6 times as long as basal articular diameter of the segment. Segment VI always bears a cluster of accessory sensoria. Segment V bears 1 primary sensorium. Segment III with 32 – 42 secondary rhinaria (Fig. 2 E). Rostrum reaching middle coxae. Apical segment of rostrum with 8 accessory setae (Fig. 2 G), 0.18 – 0.2 times as long as antennal segment III, 0.76 – 0.82 times as long as second hind tarsal segment.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A51FFB9AB9D5224FC5F90A1.taxon	description	Thorax. Leg normal and setose. Hind femora and tibiae bearing pointed, long and stout setae, which are 0.11 – 0.2 mm long. Distal part of hind tibiae with few rows of stout spinules. Hind tibiae 0.53 – 0.6 time as long as body. First tarsal chaetotaxy: 5, 5, 5, sometimes 5, 5, 4. Second hind tarsal segment with 10 – 12 setae and 0.24 – 0.25 times as long as antennal segment III (Fig. 2 J). Fore wings typical, with normal venation (Fig. 2 F). Abdomen. Siphunculi 0.12 – 0.15 mm long, with 7 – 14 rows of reticulations in apical part and well-developed flange, widest diameter 2.5 – 3.8 times as long as basal diameter of antennal segment III (Fig. 2 H). Cauda broadly rounded, 0.36 – 0.48 times as long as its basal width, with 42 – 49 long and short setae (Fig. 2 I).	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A51FFB9AB9D5224FC5F90A1.taxon	materials_examined	Material examined. 23 apterous viviparous female, Beijing, China, on K. paniculate, 20. IV. 2019, Xiaolei Huang [20190420 - 4 - 1, 2, 3; 20190420 - 5 - 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,12; 20190420 - 6 - 1, 2, 3, 4, 5, 6, 7, 8]; 6 alate viviparous females, Beijing, China, on K. paniculate, 20. IV. 2019, Xiaolei Huang [20190420 - 6 - 9, 10, 11, 12, 13, 14].	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A51FFB9AB9D5224FC5F90A1.taxon	distribution	Distribution. Temperate areas of northern China, Japan and Korea of East Asia.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A51FFB9AB9D5224FC5F90A1.taxon	biology_ecology	Biology. The species is exclusively associated with K. paniculate and feeds on the underside of leaves and young branches (Fig. 7 A, B). The species and its host plant are endemic to temperate regions.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A51FFB9AB9D5224FC5F90A1.taxon	discussion	Remarks. Molecular diagnosis: nucleotides 312 A, 492 C, 594 - 595 TT. Periphyllus koelreuteriae was first described in Sapporo and Tokyo, Japan, which belongs to temperate climate zone. In this study, the specimens from the temperate areas are very similar to the original description of P. koelreuteriae, especially the body color and shape of dorsal spots on abdominal tergites in life, and both feed on K. paniculate.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A56FFB4AB9D5145FEEE91FD.taxon	description	(Figs. 3 – 4, 7 & Table S 2) Apterous viviparous female (n = 27). Body dark green, covered with numerous pointed setae in life. Black dorsal spots on abdominal tergites interconnected to the head and cauda (Fig. 7 C).	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A56FFB4AB9D5145FEEE91FD.taxon	materials_examined	Mounted specimens: Body oval (Fig. 3 A), 2.33 – 3.59 mm long, 1.67 – 2.14 times as long as its width. Antennal segments I-II and V-VI, distal 1 / 2 of antennal segments III-IV, distal ends of middle and hind femur, middle and hind tibiae dark brown; dorsum of head and thorax, eyes, apex of rostrum, the femur of front legs, cauda and siphunculi brown; remaining parts of rostrum and other parts of body pale brown. Dorsum of abdomen with brown and variably-shaped sclerites (Fig. 3 C). Abdominal tergites I-VII each with 1 pair of marginal sclerites and 1 pair of spinal sclerites; tergite VIII with 1 pair of marginal sclerites and 2 pairs spinal sclerites; pleural sclerites small and irregularly placed on each tergite. Dorsal setae of body long and pointed. Dorsum of head with 11 – 18 setae, up to 0.27 mm long; abdominal setae 0.07 – 0.27 mm long, spinal sclerites with 1 – 3 setae, pleural sclerites with 1 seta, marginal sclerites with 7 – 15 setae. Head. Frons flat and straight, eyes with numerous facets (Fig. 3 B). Antennae 6 - segmented (Fig. 3 D), long, with imbrications on segments III-VI, 0.5 – 0.73 times as long as body. Processus terminalis 1.85 – 2.58 times as long as basal part of the last antennal segment; other antennal ratios: VI: III 0.54 – 0.89, V: III 0.33 – 0.56, IV: III 0.34 – 0.57. Segment I with 6 – 10 setae, segment II with 3 – 7 setae, segment III with 20 – 56 setae, segment IV with 8 – 17 setae, segment V with 8 – 14 setae, base of segment VI with 3 – 5 setae, processus terminalis with 2 – 4 apical setae. The setae of antenna fine and pointed, up to 0.18 mm long. Length of longest seta on segment III 3 – 3.6 times as long as basal articular diameter of the segment. Rostrum reaching over middle coxae. Apical segment of rostrum with 6 – 11 setae (Fig. 3 E), 0.16 – 0.36 times as long as antennal segment III, 0.75 – 1.15 times as long as second hind tarsal segment. The full length of processus terminalis of 6 th antennal segment arrays annular secondary sensoria.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A56FFB4AB9D5145FEEE91FD.taxon	description	Thorax. Legs normal and setose. Hind tibiae bearing pointed, long and rigid setae, which are 0.07 – 0.22 mm long. Distal part of hind tibiae with few rows of stout spinules. Hind tibiae 0.38 – 0.59 times as long as body. First tarsal chaetotaxy: 5, 5, 5, sometimes 4, 5, 5, or 4, 4, 5. Second hind tarsal segment with 9 – 13 setae and 0.19 – 0.39 times as long as antennal segment III (Fig. 3 H). Abdomen. Siphunculi 0.08 – 0.15 mm long, with 2 – 4 rows of subapical reticulations and slightly flared apex, widest diameter 2.33 – 4.4 times as long as basal diameter of antennal segment III (Fig. 3 F). Cauda broadly rounded, 0.3 – 0.55 times as long as its basal width, with 27 – 54 long and short setae (Fig. 3 G). Alate viviparous female (n = 13). Body dark green or black, eyes dark red, cover with numerous pointed setae, dark dorsal cross-bars on abdominal tergites in life (Fig. 7 D).	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A56FFB4AB9D5145FEEE91FD.taxon	materials_examined	Mounted specimens: Body elongated (Fig. 4 A), 2.22 – 3.69 mm long, 2.04 – 2.71 times as long as its width. Dorsum of head and thorax, antennal segments I-II and distal 1 / 2 of antennal segments III-IV, coxae, distal 2 / 3 of hind femora, most of tibiae and siphunculi dark brown; basal 1 / 2 of antennal segments III-IV, antennal segments V-VI, apex of ultimate rostral segment, wing veins, basal 1 / 3 of hind femora and second tarsal segments brown; remaining parts of antennae and leg, cauda and other parts slightly paler. Dorsal head and thorax sclerotized, abdominal tergites cover with large fused spinal sclerites and oval marginal sclerites, pleural sclerites small and irregular placed. Tergites I-VIII each with 1 spinal band and 1 pair of marginal sclerites. Dorsal setae of body long and pointed. Head with 12 – 18 dorsal setae, up to 0.23 mm long; abdominal setae 0.08 – 0.25 mm long, spinal sclerites with 9 – 23 setae, pleural sclerites with 1 seta, marginal sclerites with 7 – 14 setae (Fig. 4 C). Head. Frons flat, eyes with numerous facets (Fig. 4 B). Antennae 6 - segmented (Fig. 4 D), long, with sparse imbrications on segments III – VI, 0.59 – 0.74 times as long as body. Processus terminalis 1.86 – 2.58 times as long as base of the segment VI; other antennal ratios: VI: III 0.53 – 0.65, V: III 0.37 – 0.45, IV: III 0.42 – 0.52. Segment I with 8 – 11 setae, segment II with 3 – 6 setae, segment III with 27 – 37 setae, segment IV with 9 – 15 setae, segment V with 9 – 13 setae, base of segment VI with 3 – 5 setae, processus terminalis with 2 – 4 apical setae. Antennal setae long and pointed, up to 0.17 mm long. Longest seta on segments III 2.83 – 3.4 times as long as basal articular diameter of the segment. Segment VI always bears a cluster of accessory sensoria. Segment V bears 1 – 2 primary sensorium. Segment III with 32 – 48 secondary rhinaria (Fig. 4 E). Rostrum reaching middle coxae. Apical segment of rostrum with 7 – 10 accessory setae (Fig. 4 G), 0.18 – 0.22 times as long as antennal segment III, 0.81 – 1.23 times as long as second hind tarsal segment.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A56FFB4AB9D5145FEEE91FD.taxon	description	Thorax. Leg normal and setose. Hind femora and tibiae bearing pointed, long and stout setae, which are 0.06 – 0.23 mm long. Distal part of hind tibiae with few rows of stout spinules. Hind tibiae 0.48 – 0.58 time as long as body. First tarsal chaetotaxy: 5, 5, 5, sometimes 5, 4, 5, or 5, 4, 6. Second hind tarsal segment with 9 – 12 setae and 0.16 – 0.25 times as long as antennal segment III (Fig. 4 J). Fore wings typical, with normal venation (Fig. 4 F). Abdomen. Siphunculi 0.09 – 0.14 mm long, with 6 – 14 rows of reticulations in apical part and well-developed flange, widest diameter 2.6 – 3.5 times as long as basal diameter of antennal segment III (Fig. 4 H). Cauda broadly rounded, 0.31 – 0.5 times as long as its basal width, with 37 – 51 long and short setae (Fig. 4 I).	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A56FFB4AB9D5145FEEE91FD.taxon	materials_examined	Type material. Holotype: apterous viviparous female, Fuzhou, Fujian province, China, on K. paniculate, 26. III. 2021, Qiang Li [20210326 - 1 - 10] (FAFU). Paratypes: 13 apterous viviparous females, Fuzhou, Fujian province, China, on K. paniculate, 26. III. 2021, Qiang Li [20210326 - 1 - 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13,14]; 7 alate viviparous females, Fuzhou, Fujian province, China, on K. paniculate, 26. III. 2021, Qiang Li [20210326 - 1 - 15, 16, 17, 18, 19, 20, 21]; 2 apterous viviparous females, Fuzhou, Fujian province, China, on K. bipinnata, 11. IV. 2016, Xiaolei Huang [20160411 - 10 - 1, 2]; 2 apterous viviparous females, Fuzhou, Fujian province, China, on K. bipinnata, 9. V. 2016, Xiaolei Huang [20160509 - 8 - 1, 2]; 1 apterous viviparous females, Fuzhou, Fujian province, China, on K. bipinnata, 18. III. 2017, Xiaolei Huang [20170318 - 2 - 1]; 2 apterous viviparous females, Fuzhou, Fujian province, China, on K. bipinnata, 28. III. 2017, Xiaolei Huang [20170328 - 14 - 1, 2]; 6 apterous viviparous females, Nanchang, Jiangxi province, China, on K. paniculate, 2. IV. 2016, Xiaolei Huang [20160402 - 1 - 1, 2, 3, 4, 5, 6]; 6 alate viviparous females, Nanchang, Jiangxi province, China, on K. paniculate, 14. v. 2021, Qiang Li [20210514 - 5 - 1, 2, 3, 4, 5, 6] (FAFU).	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A56FFB4AB9D5145FEEE91FD.taxon	distribution	Distribution. China: Fujian province, Jiangxi province.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A56FFB4AB9D5145FEEE91FD.taxon	biology_ecology	Biology. The new species lives on the underside of leaves and young branches of K. paniculate and K. bipinnata (Fig. 7 C, D). The species is endemic to subtropical humid areas of eastern and southeastern China.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A56FFB4AB9D5145FEEE91FD.taxon	etymology	Etymology. The species name is in honor of the late Dr. Roger Blackman for his tremendous contribution to the knowledge of the world aphid fauna. His “ Aphids on the World’s Plants ” books co-authored with Dr. Victor Eastop and the constantly updated Aphids on the World’s Plants website (http: // www. aphidsonworldsplants. info /) are classic references for entomologists.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A56FFB4AB9D5145FEEE91FD.taxon	discussion	Remarks. Molecular diagnosis: nucleotides 312 G, 492 T, 594 - 595 CT. The new species is similar to P. koelreuteriae in BL, Ant I, Ant II, Ant III, Ant III W, Ant L, Cauda BW, but differs from P. koelreuteriae in BW, ARS, Ant IV, Ant V, Ant VI BL, Ant VI PT, Ant VI, HFEM, HTIB, HT II, SIPH, SHIP WD, reticulations, Cauda L. In addition, this new species is mainly distributed in the subtropical humid areas and can feed on both K. paniculate and K. bipinnata.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A5BFFB7AB9D51B9FD3F9652.taxon	description	(Figs. 5 – 6, 7 & Table S 2) Apterous viviparous female (n = 8). Body light green, relatively smaller dark brown dorsal spot extending from the head to abdominal tergites in life (Fig. 7 E).	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A5BFFB7AB9D51B9FD3F9652.taxon	materials_examined	Mounted specimens: Body oval (Fig. 5 A), 2.07 – 2.68 mm long, 1.86 – 2.17 times as long as its width. Distal 1 / 2 of antennal segments V, base of the segment VI, distal 1 / 2 of hind tibiae, second hind tarsal segment, siphunculi and apex of ultimate rostral segment dark brown; dorsum of head and thorax, antennal segments I-IV, basal 1 / 2 of antennal segments V and remaining part of leg brown; cauda and other part of body pale brown. Pale brown sclerites on abdomen always present (Fig. 5 C). Abdominal tergites I-VIII each with 1 pair of marginal sclerites and 1 spinal sclerites, pleural sclerites small and irregularly placed on each tergite. Setae on body dorsum stout and pointed. Dorsum of head with 10 – 12 setae, up to 0.2 mm long; abdominal setae 0.07 – 0.24 mm long, spinal sclerites with 2 – 7 setae, pleural sclerites with 1 – 2 setae, marginal sclerites with 7 – 12 setae. Head. Frons flat, eyes with numerous facets (Fig. 5 B). Antennae 6 - segmented (Fig. 5 D), long, with imbrications on segments III-VI, 0.54 – 0.68 times as long as body. Processus terminalis 2 – 2.9 times as long as basal part of the last antennal segment; other antennal ratios: VI: III 0.73 – 1.22, V: III 0.42 – 0.56, IV: III 0.44 – 0.59. Segment I with 5 – 8 setae, segment II with 3 – 4 setae, segment III with 14 – 25 setae, segment IV with 7 – 11 setae, segment V with 5 – 10 setae, base of segment VI with 2 – 4 setae, processus terminalis with 4 apical setae. The setae of antenna fine and pointed, up to 0.13 mm long. Length of longest seta on segment III 3.6 – 4.5 times as long as basal articular diameter of the segment. Rostrum reaching over middle coxae (Fig. 5 E). Apical segment of rostrum with 7 – 8 setae, 0.2 – 3.4 times as long as antennal segment III, 0.77 – 1 times as long as second hind tarsal segment. The full length of processus terminalis of 6 th antennal segment arrays annular secondary sensoria.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A5BFFB7AB9D51B9FD3F9652.taxon	description	Thorax. Legs normal and setose. Hind tibiae bearing pointed, long and rigid setae, which are 0.07 – 0.16 mm long. Distal part of hind tibiae with few rows of stout spinules. Hind tibiae 0.36 – 0.51 times as long as body. First tarsal chaetotaxy: 5, 5, 5, sometimes 4, 5, 5 (Fig. 5 H). Second hind tarsal segment with 10 – 12 setae and 0.22 – 0.34 times as long as antennal segment III. Abdomen. Siphunculi 0.1 – 0.15 mm long, with 1 – 2 rows of subapical reticulations and slightly flared apex, widest diameter 3.25 – 5 times as long as basal diameter of antennal segment III (Fig. 5 F). Cauda broadly rounded, 0.39 – 0.62 times as long as its basal width, with 34 – 38 long and short setae (Fig. 5 G). Alate viviparous female (n = 11). Body black with broad dark dorsal abdominal cross bars scarcely separated between segments, cover with numerous pointed setae in life (Fig. 7 F).	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A5BFFB7AB9D51B9FD3F9652.taxon	materials_examined	Mounted specimens: Body elongated (Fig. 6 A), 2.26 – 2.6 mm long, 2.35 – 2.98 times as long as its width. Dorsum of head and thorax, distal 1 / 2 of hind femora, tibiae and siphunculi dark brown; antennal segments I-II, distal 1 / 2 of antennal segments III-IV, antennal segment V-VI, wing veins, distal 1 / 2 of front and middle femora, apex of ultimate rostral segment brown; remaining part of rostrum and leg, cauda and other part of body pale brown. Dorsal head and thorax sclerotized, abdominal tergites cover with large fused spinal sclerites and oval marginal sclerites, pleural sclerites small and irregular placed (Fig. 6 C). Tergites I-V each with 1 spinal band and 1 pair of marginal sclerites; Tergites VI and VII each with 2 spinal band and 1 pair of marginal sclerites; tergite VIII with 1 spinal sclerites. Dorsal setae of body long and pointed. Head with 10 – 11 dorsal setae, up to 0.2 mm long; abdominal setae 0.08 – 0.22 mm long, spinal sclerites with 10 – 21 setae, pleural sclerites with 1 seta, marginal sclerites with 6 – 11 setae. Head. Frons flat, eyes with numerous facets (Fig. 6 B). Antennae 6 - segmented (Fig. 6 D), long, with sparse imbrications on segments III-VI, 0.66 – 0.76 times as long as body. Processus terminalis 2.5 – 3.5 times as long as base of the segment VI; other antennal ratios: VI: III 0.68 – 0.82, V: III 0.41 – 0.52, IV: III 0.41 – 0.5. Segment I with 6 – 9 setae, segment II with 3 – 4 setae, segment III with 17 – 23 setae, segment IV with 6 – 10 setae, segment V with 6 – 10 setae, base of segment VI with 2 setae, processus terminalis with 4 apical setae. Antennal setae long and pointed, up to 0.13 mm long. Longest seta on segments III 2.6 – 3.25 times as long as basal articular diameter of the segment. Segment VI always bears a cluster of accessory sensoria. Segment V bears 1 – 2 primary sensorium. Segment III with 29 – 37 secondary rhinaria (Fig. 6 E). Rostrum reaching middle coxae. Apical segment of rostrum with 7 – 9 accessory setae (Fig. 6 G), 0.17 – 0.2 times as long as antennal segment III, 0.77 – 0.85 times as long as second hind tarsal segment.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A5BFFB7AB9D51B9FD3F9652.taxon	description	Thorax. Leg normal and setose. Hind femora and tibiae bearing pointed, long and stout setae, which are 0.08 – 0.15 mm long. Distal part of hind tibiae with few rows of stout spinules. Hind tibiae 0.48 – 0.55 time as long as body. First tarsal chaetotaxy: 5, 5, 5, sometimes 4, 5, 5. Second hind tarsal segment with 9 – 12 setae (Fig. 6 J) and 0.2 – 0.24 times as long as antennal segment III. Fore wings typical, with normal venation (Fig. 6 F). Abdomen. Siphunculi 0.07 – 0.14 mm long, with 8 – 12 rows of reticulations in apical part and well-developed flange, widest diameter 2 – 4.75 times as long as basal diameter of antennal segment III (Fig. 6 H). Cauda broadly rounded, 0.38 – 0.55 times as long as its basal width, with 34 – 48 long and short setae (Fig. 6 I).	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A5BFFB7AB9D51B9FD3F9652.taxon	materials_examined	Type material. Holotype: apterous viviparous female, Kunming, Yunnan province, China, on K. bipinnata, 25. V. 2021, Qiang Li [20210525 - 3 - 1] (FAFU). Paratypes: 4 apterous viviparous females, Kunming, Yunnan province, China, on K. bipinnata, 10. X. 2017, Zhixiang Liu [HLY- 8 - 12, 13, 14, 15]; 3 apterous viviparous females, Kunming, Yunnan province, China, on K. bipinnata, 25. V. 2021, Qiang Li [20210525 - 3 - 2, 3, 4]; 11 alate viviparous females, Kunming, Yunnan province, China, on K. bipinnata, 10. X. 2017, Zhixiang Liu [HLY- 8 - 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11] (FAFU).	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A5BFFB7AB9D51B9FD3F9652.taxon	distribution	Distribution. China: Yunnan province (Kunming).	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A5BFFB7AB9D51B9FD3F9652.taxon	biology_ecology	Biology. The new species is exclusively associated with K. bipinnata and feeds on the underside of leaves and young branches. The species is endemic to subtropical highland region in Yunnan of southwest China.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A5BFFB7AB9D51B9FD3F9652.taxon	etymology	Etymology. The species name is in honor of Prof. Guangxue Zhang for his great contribution to the knowledge of aphid fauna and the development of aphid research in China.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
03BCCE673A5BFFB7AB9D51B9FD3F9652.taxon	discussion	Remarks. Molecular diagnosis: nucleotides 312 C, 492 A, 594 - 595 TC. The new species is similar to P. koelreuteriae in Ant VI, Cauda L, but there are significant differences in morphometry, especially BL, BW, ARS, Ant I, Ant II, Ant III, Ant III W, Ant IV, Ant V, Ant VI BL, Ant VI PT, Ant L, HFEM, HTIB, HT II, SIPH, SHIP WD, reticulations, Cauda BW. This new species is exclusively feeds on K. bipinnata and mainly distributed in the subtropical highland region of southwest China.	en	Li, Qiang, Wu, Liying, Cheng, Zhentao, Liu, Zhixiang, Huang, Xiaolei (2022): Two new cryptic species within Periphyllus koelreuteriae (Hemiptera: Aphididae) feeding on Koelreuteria (Sapindaceae) in China. Zootaxa 5183 (1): 220-238, DOI: https://doi.org/10.11646/zootaxa.5183.1.17
