Aleurodaphis sinojackiae Qiao & Jiang

Jiang, Li-Yun & Qiao, Ge-Xia, 2011, A review of Aleurodaphis (Hemiptera, Aphididae, Hormaphidinae) with the description of one new species and keys to species, ZooKeys 135, pp. 41-56 : 47-51

Aleurodaphis sinojackiae Qiao & Jiang sp. n. urn:lsid:zoobank.org:act: http://species-id.net/wiki/Aleurodaphis_sinojackiaeFigs 334

Locus typicus.

China (Jiangsu and Zhejiang).

Etymology.

The new species is named after its host plant, Sinojackia xylocarpa .

Description of mounted specimens.

Apterous viviparous females (Table 1; Figs 3-13, 20-28). Body oval (Fig. 20). Measurements: body 1.86-2.09 long, 1.01-1.24 wide. Cephalic setae, marginal setae on abdominal tergite I and dorsal setae on abdominal tergite VIII 0.04-0.06, 0.04, 0.06-0.07 long. Antennae 0.61-0.68 long, segment III 0.19-0.23 long. Setae on segment III 0.03 long. Ultimate rostral segment 0.12 -0.15 long. Hind trochanter and femur 0.33-0.39 long, hind tibia 0.38-0.44 long, second hind tarsal segment 0.10-0.11 long. Setae on hind tibia 0.04-0.06 long. Apical diameter of siphunculi 0.04-0.05. Cauda 0.08-0.10 long.

Head and pronotum (Figs 3, 21), mesonotum and metanotum (Fig. 6), abdominal tergites I–VII fused (Fig. 20), respectively; tergite VIII free (Fig. 8). Antennae, rostrum and legs brown; cauda, anal plate and genital plate dark brown. Dorsum of body rough, covered with dense sculptures on dorsum of head and thoracic notums, and with sparse sculptures on abdominal tergites (Fig. 9). Dorsum of body with round marginal wax glands, composited with big facets (Figs 8, 25, 26). Pro- and metanotum each with 13 wax glands, mesonotum with 8 wax glands, abdominal tergites I–VII each with 3-6 pairs of wax glands; tergite VIII with 10-13 wax glands. Dorsal setae of body fine and short (Fig. 9). Head with 2 pairs of cephalic and spinal setae, 3 pairs of marginal setae; pronotum with 2 pairs of spinal, 1 pair of pleural and 2 pairs of marginal setae; mesonotum with 2 pairs of spinal, 3 pairs of pleural and 2 pairs of marginal setae; metanotum with 1 pair of spinal, 3 pairs of pleural and 2 pairs of marginal setae; abdominal tergite I with 1 pair of spinal, pleural and marginal setae; tergites II–VII each with 1 pair of spinal and marginal setae; tergite VIII with 1 pair of spinal and 5 marginal setae. Cephalic setae, marginal setae on abdominal tergite I, setae on abdominal tergite VIII 1.20-1.60, 0.45-1.20 and 1.09-2.00 times as long as widest diameter of antennal segment III, respectively. Spiracles oval, closed, on brown oval spiracular plates.

Head: Front flat and straight. Eyes with 3 facets. Antennae 5-segmented (Figs 4, 22), with spinulose imbrications on segments III–V, 0.33-0.38 times as long as body. Length in proportion of segments I–V: 31-38: 34-42: 100: 50-62: 56 –65+13– 21, respectively. Processus terminalis 0.25-0.33 times as long as base of the segment V. Segments I–V each with 2-4, 2 or 3, 0 or 1, 1 or 2, 2+0 setae, respectively. Processus terminalis with 5 or 6 apical setae. Setae on segment III 0.58 times as long as widest diameter of the segment. Primary rhinaria small and round. Rostrum short, reaching mid-coxae. Ultimate rostral segment acute wedge-shaped (Figs 5, 23), 2.67-3.33 times as long as its basal width, 1.14-1.43 times as long as second hind tarsal segment; with 2 pairs of primary setae and 1 or 2 pairs of secondary setae.

Thorax: Mesosternal furca with two separated arms, each arm 1.21-1.41 times as long as widest diameter of antennal segment III. Legs normal. Trochanter and femora fused, hind trochanter and femur 1.63-1.85 times as long as antennal segment III, hind tibia 0.20-0.22 times as long as body; setae on hind tibia 0.88-0.94 times as long as its mid-diameter. First tarsal chaetotaxy: 4, 4, 4, sometimes 3, 3, 4 or 4, 4, 3. Second hind tarsal segment with 2 setae between claws and each seta with funnel-shaped apex (Figs 7, 24).

Abdomen: Siphunculi pore-like (Figs 10, 25), on abdominal tergite VI, apical diameter 1.00-1.40 times as long as widest diameter of antennal segment III. Cauda, anal plate and genital plate with spinulose imbrications. Cauda knobbed (Figs 11, 26), constricted in middle, 0.55-0.68 times as long as its basal width, with 9 or 10 apical setae. Anal plate bilobed (Figs 12, 27), each with 6-8 setae. Genital plate broad band-shaped (Figs 13, 28), with 3 or 4 anterior setae and 14-23 middle and posterior marginal setae. Two gonapophyses each with 5 short setae.

Alate viviparous females (Table 2; Figs 4-19, 29-34). Body oval (Fig. 29). Measurements: body 1.30-2.00 long, 0.56-0.82 wide. Cephalic setae, marginal setae on abdominal tergite I and dorsal setae on abdominal tergite VIII 0.016-0.021, 0.015-0.017, 0.020-0.026 long, respectively. Antennae 0.49-0.74 long, segment III 0.18-0.28 long. Ultimate rostral segment 0.10-0.14 long. Hind femur 0.26-0.40 long, hind tibia 0.36 long, second hind tarsal segment 0.07-0.11 long. Setae on hind tibia 0.030 long. Fore wing 1.64-1.74 long. Apical diameter of siphunculi 0.04-0.05. Cauda 0.05-0.08 long.

Dorsum of body dark brown, antenna, apex of rostrum, legs, cauda, anal plate and genital plate brown. Dorsal setae of body fine, short and pointed, slightly longer than ventral setae. Head with 2 pairs of cephalic setae, 2 pairs of setae between antennae and 2 pairs of setae between eyes; abdominal tergites I–VII each with 1 pair of spinal and marginal setae; tergite VIII with 1 pair of spinal setae. Cephalic setae, marginal setae on abdominal tergite I, setae on abdominal tergite VIII 0.51-0.67, 0.50-0.54 and 0.64-0.83 times as long as widest diameter of antennal segment III, respectively.

Head: Front rounded. Antennae 5-segmented (Figs 14, 30), with sparse imbrications on segments I–II and dense spinulose imbrications on segments III–V. Whole length of antennae 0.37-0.43 times as long as body, length in proportion of segments I–V: 21-32: 24-33: 100: 49-60: 41 –53+10– 15, respectively. Processus terminalis 0.29-0.37 times as long as base of the segment V. Segments I–V each with 3-5, 2 or 3, 0 or 1, 1, 1 or 2+0 setae, respectively. Processus terminalis with 5 apical setae. Primary rhinaria irregular ring-shaped. Segments III, IV and base of Segment V each with 10-14, 3-6 and 2-4 secondary rhinaria, respectively. Rostrum short, reaching mid-coxae. Ultimate rostral segment (Figs 15, 31) 2.50-2.86 times as long as its basal width, 1.20-1.54 times as long as second hind tarsal segment; with 2 or 3 pairs of primary setae and 1 or 2 pairs of secondary setae.

Thorax: Legs normal. Hind femur 1.50-1.62 times as long as antennal segment III, hind tibia 0.25-0.28 times as long as body; setae on hind tibia 0.91-1.20 times as long as its mid-diameter. First tarsal chaetotaxy: 4, 4, 3. Fore wing (Figs 16, 29) 1.17-1.34 times as long as body, 2.00-2.42 times as long as width of the wing. Media once branched. Pterostigma long and curved to the apex of the wing. Hind wings with one thick longitudinal vein and two oblique veins.

Abdomen: Siphunculi pore-like (Figs 17, 32), apical diameter 1.33-1.51 times as long as widest diameter of antennal segment III. Cauda knobbed (Figs 18, 33), constricted in middle, 0.68-0.86 times as long as its basal width, with 6-8 apical setae. Anal plate bilobed (Figs 19, 34), each with 6 or 7 setae. Genital plate broad band-shaped, with 3 anterior setae and 12-15 posterior marginal setae. Two gonapophyses each with 5 or 6 setae.

Embroys. Body oval, with wax glands arranged along crenulated margin in both apterae and alatae. Cephalic setae short and pointed. Antennae 4-segmented. Rostrum and legs well developed. Legs covered with dense setae. Siphunculi visible.

Type material examined.

Holotype, 1 apterous viviparous female, CHINA: Zhejiang (Hangzhou City), 21 May 1985, on Sinojackia xylocarpa , coll. V. F. Eastop (BMNH). Paratypes, 28 apterous viviparous females, 2 alate viviparous females and 8 nymphs, with the same collection data as holotype (BMNH); 9 apterous viviparous females and 11 alate viviparous females, CHINA: Jiangsu (Zhongshan Botanic Garden, Nanjing City, Alt. 100m), No. Y7116, 10 June 1987, on Sinojackia xylocarpa , coll. T. S. Zhong (NZMC); 1 apterous viviparous female and 1 alate viviparous female, CHINA: Jiangsu (Zhongshan Botanic Garden, Nanjing City, Alt. 100m), No. Y7116, 10 June 1987, on Sinojackia xylocarpa , coll. T. S. Zhong ( Kôgakkan University, Japan).

Host plants.

Sinojackia xylocarpa .

Biology.

The species induced the leaves of host plants to curl and form boat-shaped leaf galls.

Diagnosis.

The new species differs from the other known speciesas follows: in apterous viviparous female: wax glands arranged in each segment, not connecting with each other (the other species: arranged continuously along the edge of body as a crenulation, or without wax glands); in alate viviparous female compared to the most similar species Aleurodaphis mikaniae : antennal segment III with 10-14 secondary rhinaria ( Aleurodaphis mikaniae : 24-27); first tarsal chaetotaxy: 4, 4, 4, sometimes 3, 3, 3 ( Aleurodaphis mikaniae : 3, 3, 3, sometimes 2, 2, 2).

Remark.

As the detailed biological information is very important to research the taxonomic position of the genus and species identification, the life cycle of the new species will receive further study in future.