Shivaphis pteroceltis, Jiang, Liyun, An, Guangchi, Li, Weiwei & Qiao, Gexia, 2014

Jiang, Liyun, An, Guangchi, Li, Weiwei & Qiao, Gexia, 2014, A new Shivaphis species (Hemiptera: Aphididae) on the Chinese endemic plant, Pteroceltis tatarinowii, Zootaxa 3753 (4), pp. 375-383 : 376-383

Shivaphis pteroceltis sp. n.

Apterous viviparous females ( Figs 1–6 , 14–18 , 34 & Table 1). Body oval ( Fig. 14 ), red brown in life (Fig. 34), covered with thick wax powder or filaments. Head, thorax and abdominal segments each with 1 pair of dorsal dark brown scleroites on both spinal and marginal regions.

Mounted specimens: Body pale, with distal ends of antennal segments III–VI, apex of ultimate rostral segment, distal 1/3 of hind femora, second tarsal segments and claws brown; dorsal head, pronotum, antennal segments I and II, remaining parts of antennal segments III–VI, remaining parts of rostrum, remaining parts of legs, wax plates, spiracular plates, cauda, anal plate and genital plate pale brown. Dorsum of body smooth, with wax glands on each segment, distal parts of antennal segments III–VI, coxae, trochanters, femora and tibiae. Wax glands composed of visible wax pores, forming wax facets on antenna and legs, and wax plates on dorsum ( Figs 3 , 18 ); head with 1 pair of large oval wax plates ( Fig. 15 ); thoracic nota and abdominal tergites I–VII each with 1 pair of spinal and 1 pair of marginal wax plates; tergite VIII with one spinal wax plate forming a band across the segment. Dorsal setae of body long and fine ( Fig. 3 ). Head with 2 pairs of frontal and 3 pairs of dorsal setae; abdominal tergites I–V each with 3–6 pairs of spino-pleural and 2 or 3 pairs of marginal setae; tergite VI with 2 or 3 pairs of spino-pleural and marginal setae; tergite VII with 1 pair of spinal, pleural and marginal setae; tergite VIII with 1 pair of spinal and marginal setae. Frontal setae, marginal setae on abdominal tergite I, setae on tergite VIII 3.00–4.25, 3.00–5.00 and 3.50–5.25 times as long as basal diameter of antennal segment III, respectively. Spiracles oval and closed, on kidney shaped spiracular plates.

Head. Frons round, antennal tubercles undeveloped. Eyes normal, with numerous facets. Antennae 6- segmented ( Figs 1 , 16 ), 0.58–0.69 times as long as body, with sparse spinules on segments III–VI. Processus terminalis 0.19–0.29 times as long as base of the segment VI. Segments I–VI each with 3 or 4, 2–6, 16–23, 10–13, 2–7, 2–5+0 or 1 setae, respectively. Processus terminalis with 2–4 apical setae. Outer setae much longer than inner setae on segment III–V, longest setae on segment III 3.00–4.00 times as long as basal diameter of the segment. Primary rhinaria small and round, ciliated; segment III with 2–7 secondary rhinaria. Rostrum reaching hind coxae. Ultimate rostral segment wedge-shaped ( Figs 2 , 17 ), 1.92–2.40 times as long as its basal width, 0.82–0.96 times as long as second hind tarsal segment; with 6 primary setae and 10–18 secondary setae.

Thorax. Legs normal but with fore coxae distinctly enlarged. Hind femur 1.34–1.54 times as long as antennal segment III, hind tibia 0.43–0.51 times as long as body; setae on hind tibia 1.88–2.86 times as long as its middiameter. First tarsal chaetotaxy: 7, 7, 7, including 2 dorsal and 5 ventral setae.

Abdomen. Siphunculi ring-like ( Fig. 3 ), on abdominal tergite VI, widest diameter 0.75–1.00 times as long as basal diameter of antennal segment III. Cauda, anal plate and genital plate with spare spinules. Cauda knobbed ( Fig. 4 ), constricted in distal 1/3, 0.89–1.04 times as long as its basal width, with 6–10 setae, including 2 long and thick setae. Anal plate bilobed ( Fig. 5 ), each lobe with 9–14 setae, including 2–4 long and thick setae. Genital plate broad band-shaped ( Fig. 6 ), with 20–26 setae, including 8–10 anterior setae and 12–16 posterior marginal setae. Gonapophyses fused as one, with 7–11 short setae.

Alate viviparous females ( Figs 7, 8 , 19–23 , 35 & Table 1). Body oval ( Fig. 19 ), red brown in life (Fig. 35), covered with thick wax powder or filaments.

Mounted specimens: Dorsal of head, thorax, distal ends of antennal segments III–VI, apex of ultimate rostral segment, distal 1/3 of hind femora, second tarsal segments and claws brown; antennal segments I and II, most of antennal segments III–VI, remaining parts of legs, wax plates, spiracular plates, cauda and anal plate pale brown; the other parts of body pale. Dorsum of body smooth, with wax glands on each segment of body, distal parts of antennal segments III–VI, coxae, trochanters, femora and tibiae. Wax glands composed of visible wax pores, with separate facets on antenna and legs, or forming wax plates on dorsum; dorsal head and thorax covered with large wax plates; abdominal tergites I–III each with 1 spinal band and 1 pair of marginal wax plates; tergites IV–VII each with 1 pair of marginal wax plates, and tergite VIII with 1 wax plate as a broad band across the segment ( Fig. 23 ). Dorsal setae of body long and fine. Head with 2 pairs of frontal and 3 pairs of dorsal setae; abdominal tergites I–V each with 3–6 pairs of spino-pleural and 2–5 pairs of marginal setae; tergite VI with 2 or 3 pairs of spino-pleural and 2 pairs of marginal setae; tergite VII each with 1 pair of spinal, pleural and marginal setae; tergite VIII each with 1 pair of spinal and marginal setae. Frontal setae, marginal setae on abdominal tergite I, setae on tergite VIII 2.00–2.75, 2.50–3.50 and 2.75–4.00 times as long as basal diameter of antennal segment III, respectively.

Head. Frons rounded, antennal tubercles undeveloped ( Fig. 20 ). Antenna 6-segmented ( Fig. 21 ), 0.66–0.79 times as long as body, with sparse spinules on segments III–VI. Processus terminalis 0.23–0.30 times as long as base of the segment VI. Segments I–VI each with 3 or 4, 3–5, 15–23, 10–15, 3–7, 1–4+0 or 1 setae, respectively. Processus terminalis with 2 or 3 apical setae. Segment III with 7–12 secondary rhinaria ( Fig. 7 ). Longest setae on segment III 1.00–1.50 times as long as basal diameter of the segment. Rostrum reaching mid-coxae. Ultimate rostral segment 1.85–2.60 times as long as its basal width, 0.85–0.96 times as long as second hind tarsal segment; with 6 primary setae and 6–16 secondary setae.

Thorax. Legs normal, but with fore coxae distinctly enlarged. Hind trochanter 1.27–1.36 times as long as antennal segment III, hind tibia 0.48–0.56 times as long as body; setae on hind tibia 1.50–2.71 times as long as its mid-diameter. Fore wings ( Figs 8 , 22 ) with media twice branched, radial sector normal or absent; veins very thickly fuscous-bordered, except for radial sector and basal of Cu1; with confluence of pigment between media and Cu1; pterostigma short and round. Hind wings with two obliques.

Abdomen. Siphunculi ring-like, widest diameter 0.88–1.00 times as long as basal diameter of antennal segment III. Cauda, anal plate and genital plate with sparse spinules. Cauda knobbed, constricted in distal 1/3, 0.89–1.04 times as long as its basal width, with 7–10 setae, including 2 or 3 long and thick setae. Anal plate bilobed, each lobe with 8–12 setae, including 2–4 long and thick setae. Genital plate broadly band-shaped, with 15–24 setae. Gonapophyses fused as one, with 8–12 short setae.

Fundatrix ( Figs 12, 13 , 33 & Table 1). Body oval ( Fig. 12 ), yellow brown in life (Fig. 33), covered with thick wax powder. Head, thorax and abdominal segments each with 1 pair of dark brown scleroites on both spinal and marginal regions.

Mounted specimens: Dorsum of body smooth, with wax glands developed on each segment of body, distal parts of antennal segments III–VI, coxae, trochanters, femora and tibiae. Head with 1 pair of large wax plates; each thoracic notum and abdominal tergites I–III with 1 pair of spinal and marginal wax plates; tergites IV–VII each with 1 fused spinal and 1 pair of marginal wax plates; tergite VIII with 1 wax plate forming band across the segment.

Head. Antenna 6-segmented ( Fig. 13 ), with sparse spinules on segments III–VI. Antenna 0.51–0.56 times as long as body. Processus terminalis 0.30–0.33 times as long as base of the segment VI. Segments I–VI each with 3, 4, 11–15, 3 or 4, 3 or 4, 1 or 2+0 setae, respectively. Processus terminalis with 2 or 3 apical setae. Segment III with 1–4 secondary rhinaria. Rostrum reaching mid-hind coxae. Ultimate rostral segment 2.08–2.36 times as long as its basal width, 0.83–0.87 times as long as second hind tarsal segment; with 6 primary setae and 12–14 secondary setae.

Thorax. Legs normal, but with fore coxae distinctly expanded.

Abdomen. Cauda knobbed, constricted in distal 1/3, with 6–9 setae. Anal plate bilobed, each lobe with 7–11 setae.

The other characteristics similar to apterous viviparous females.

Apterous oviparous females ( Figs 9 , 24–26 , 36, 37 & Table 1). Body oval ( Fig. 24 ), terminal part of abdomen elongated, dark yellow in life, covered with wax powder (Figs 36, 37).

Mounted specimens: Dorsum of body smooth, with wax glands developed on all segments of body, distal parts of antennal segments III–VI, coxae, trochanters, femora and tibiae. Head with 1 pair of large oval wax plates; pronotum with 2 pairs of spinal and 1 pair of marginal wax plates; meso-, metanotum and abdominal tergites I–VII each with 1 pair of spinal and 1 pair of marginal wax plates, and tergite VIII with 1 wax plate forming a band across the segment.

Head. Antenna 6-segmented ( Fig. 25 ), 0.65–0.67 times as long as body, with spare spinules on segments III–VI. Processus terminalis 0.30–0.33 times as long as base of the segment VI. Segments I–VI each with 3–5, 4 or 5, 17– 24, 9–16, 5–8, 1+0 or 1 setae, respectively. Processus terminalis with 3 or 4 apical setae. Segment III with 2 or 3 secondary rhinaria ( Fig. 9 ). Rostrum reaching mid-coxae. Ultimate rostral segment 2.17–2.60 times as long as its basal width, 0.79–0.87 times as long as second hind tarsal segment; with 6 primary setae and 10–14 secondary setae.

Thorax. Hind tibia swollen, with numerous rhinaria ( Fig. 26 ).

Abdomen. Cauda knobbed, constricted in distal 1/3, with 10–13 setae. Anal plate round, with 52–69 setae.

The other characteristics similar to apterous viviparous females.

Alate males ( Figs 10, 11 , 27–29 , 37 & Table 1). Body oval ( Fig. 27 ), dark greenish yellow in life, covered with wax powder (Fig. 37).

Mounted specimens: Head. Frons rounded. Antenna 6-segmented ( Fig. 28 ), 0.84–1.03 times as long as body. Processus terminalis 0.19–0.26 times as long as base of the segment VI. Segments I–VI each with 3–5, 5, 19–21, 11–14, 7 or 8, 1 or 2+0 setae, respectively. Processus terminalis with 3 or 4 apical setae. Segments III–VI each with 18 or 19, 6–10, 6 or 7, 2 or 3 secondary rhinaria, respectively ( Figs 10, 11 ). Ultimate rostral segment 2.27–2.50 times as long as its basal width, 0.81–0.87 times as long as second hind tarsal segment.

Thorax. Fore wings ( Fig. 29 ) as in alate viviparous females.

Abdomen. Cauda knobbed, constricted in distal 1/3, with 11 or 12 setae. Anal plate bilobed, each lobe with 13–18 setae.

The other characteristics similar to alate viviparous females.

Egg (Figs 32, 36). Eggs are orange when first laid, then turning dark brown or black.

Holotype. Apterous viviparous female, CHINA, Shandong Province, Zaozhuang City, Xiwangzhuang, Xicun Village, 34.8°N, 117.6°E, altitude 60m, on Pteroceltis tatarinowii, 6.ix.2011 (An GC) [No. Y 9152–1–3]. Paratypes. 11 apterous and 13 alate viviparous females (slides), also 1 apterous viviparous female ( COI: KF772792 ), [No. Y 9152], with same data as holotype; Shandong Province, Zaozhuang City, same host and locality data as holotype, 1 apterous and 1 alate viviparous females, [No. Y 9348], 20.iv.2013 (Li WW); 1 apterous and 1 alate viviparous females (slides), and 1 apterous viviparous female ( COI: KF772794 ), [No. Y 9325], 21.viii.2013 (Li WW); 2 alate viviparous females, [No. Y 9346], 13.x.2013, (Li WW); 4 apterous oviparous females, [No. Y 9374], 20.x.2012 (Li WW); 4 alate males (slides), and 1 male ( COI: KF772793 ), [No. Y 9373], 20.x.2012 (Li WW); 3 fundatrix, [No. Y 9347], 18.iii.2013, (Li WW); Anhui Province, Chuzhou City, same host as holotype, 1 apterous, Quanjiao County, Longshan Temple, 32.02°N, 117.58°E, altitude 243m, [No. Y 9349] and 1 alate viviparous females, Mt. Langyashan, 32.18°N, 118.18°E, altitude 118m, [No. Y 9350], 30.ix.2013 (Li WW).

The holotype and most paratypes are deposited in the National Zoological Museum of China, Institute of Zoology, Chinese Academy of Sciences, Beijing, except for 2 apterous and 2 alate viviparous females [No. Y 9152], 1 apterous oviparous female [No. Y 9374] and 2 alate males [No. Y 9373] which are deposited in Forestry Bureau of Central District, Zaozhuang City, Shandong Province.

FIGURES 30–37. Shivaphis pteroceltis sp. n. in life. (30) a colony covered with wax powder, visited by ants; (31) a colony covered with wax filaments, not visited by ants; (32) eggs and 1st instar of fundatrix on the branch; (33) fundatrix and nymphs, with ants and parasitic mites; (34) apterous viviparous female on the upper side of leaf; (35) alate viviparous female feeding on the leaf vein; (36) apterous oviparous female, laying eggs; (37) apterous oviparous female, mating with alate male.

Distribution. China: Shandong Province (Zaozhuang City), Anhui Province (Chuzhou City).

Biology. The species forms large colonies on Pteroceltis tatarinowii. Colonies that are visited by ants bear thick wax powder (Figs 30, 34), but colonies not visited by ants bear thick wax filaments (Figs 31, 35). The aphids damage the leaves along the veins, young branches and fruits of the host. Fundatrices hatch in March (Fig. 32), and usually have parasitic mites (Fig 33). In November, after mating, oviparae lay eggs in cracks of the bark or around the overwintering leaf-buds (Fig. 36).

Remarks. This species belongs to subgenus Sinishivaphis by having confluent pigmented zones on media and vein Cu 1 in fore wing ( Figs 8 , 22 , 29 ). It differs from the others in the genus by bearing numerous long dorsal setae and feeding on Pteroceltis tatarinowii (the other species bear spare short dorsal setae and feed on Celtis , Tilia or Ulmus ). Abdominal tergites I–V each have 3–6 pairs of spino-pleural setae and 2–5 pairs of marginal setae (in the other species, abdominal tergites I–VII each have 1 pair of spinal and 1 pair of marginal setae). Body dorsal setae length is 3.00–5.25 times longer than the basal diameter of antennal segment III in apterous viviparous females, and 2.00–4.00 times longer in alate viviparous females (in the other species 1.10–1.30 times in apterous viviparous females, and 1.40–2.10 times in alate viviparous females) ( Quednau, 2003, Qiao et al., 2005).

Figures

FIGURES 1 – 11. Shivaphis pteroceltis sp. n. Apterous viviparous female: (1) antenna; (2) ultimate rostral segment; (3) siphunculus, marginal seta and marginal wax glands on abdominal tergite VI; (4) cauda; (5) anal plate; (6) genital plate. Alate viviparous female: (7) antennal segment III; (8) fore wing. Apterous oviparous female: (9) antennal segment III. Alate male: (10) antennal segment III; (11) antennal segments IV – VI. Scale bars = 0.10 mm.

FIGURES 12 – 18. Shivaphis pteroceltis sp. n. Fundatrix: (12) dorsal view of body; (13) antenna. Apterous viviparous female: (14) dorsal view of body; (15) dorsal view of head; (16) antenna; (17) ultimate rostral segment; (18) spinal wax plate on abdominal tergite III. Scale bars = 0.10 mm.

FIGURES 19 – 23. Shivaphis pteroceltis sp. n. Alate viviparous female: (19) dorsal view of body; (20) dorsal view of head; (21) antenna; (22) fore wing; (23) posterior of abdomen. Scale bars = 0.10 mm.

FIGURES 24 – 29. Shivaphis pteroceltis sp. n. Apterous oviparous female: (24) dorsal view of body; (25) antenna; (26) hind tibia. Alate male: (27) dorsal view of body; (28) antenna; (29) fore wing. Scale bars = 0.10 mm.