Ceratovacuna separata Qiao,

Jiang, Liyun, Chen, Jing, Guo, Kun & Qiao, Gexia, 2015, Review of the genus Ceratovacuna (Hemiptera: Aphididae) with descriptions of five new species from China, Zootaxa 3986 (1), pp. 35-60: 50-52

publication ID

http://dx.doi.org/10.11646/zootaxa.3986.1.2

publication LSID

lsid:zoobank.org:pub:CC809E75-016E-4A32-935F-E9F9F1047C63

persistent identifier

http://treatment.plazi.org/id/03E987DF-837B-F335-61C6-FC88FA69FBBE

treatment provided by

Plazi

scientific name

Ceratovacuna separata Qiao
status

sp. n.

Ceratovacuna separata Qiao  sp. n.

( Figures 81–101View FIGURES 81 – 90View FIGURES 91 – 101, Table 1)

Apterous viviparous female. Body dark brown, covered by white wax powder in life.

Mounted specimens: Body oval ( Fig. 91View FIGURES 91 – 101), 1.51–1.72 times as long as its width. Head and pronotum fused ( Figs 81View FIGURES 81 – 90, 92View FIGURES 91 – 101). Eyes and apex of siphunculi dark brown; dorsum of head, frontal horns, antenna, rostrum, legs, cauda, anal plate and genital plate brown, the other parts pale brown. Dorsum of body with wax gland plates on sclerites, composed with big, round wax gland facets ( Figs 86View FIGURES 81 – 90, 97View FIGURES 91 – 101). Dorsum of head with 1 pair of wax gland plates between eyes, composed with 3–5 facets; thoracic nota each with 1 pair of spinal and marginal wax gland plates, each composed with 2–4 facets in a line and 5 or 6 facets; abdominal tergite I with 1 pair of spinal and marginal wax gland plates, each composed with 3–5 facets in a line and 1 or 2 facets; tergites II –V each with 1 spinal and 1 pair of pleural wax gland plates, each composed with 1–5 and 1–3 facets; tergite VI with 1 spinal wax gland plate, composed with 5 or 6 facets; tergites II –VII each with 1 pair of marginal wax gland plates, composed with 4 or 5 wax gland facets; tergite VIII with one spinal wax gland plate, composed with 4–6 facets. Dorsal setae of body fine and long, ventral setae short. Head with 1 pair of cephalic and 4–5 pairs of dorsal setae; pronotum with 2 pairs of spinal, 1 pair of anterior pleural and 1 pair of marginal setae; mesonotum, metanotum and abdominal tergites I –VI each with 1 pair of spinal, pleural and marginal setae; tergite VII with 1 pair of spinal and marginal setae; tergite VIII with 1 pair of spinal and 3–4 pairs of marginal setae. Cephalic setae, marginal setae on abdominal tergite I, setae on abdominal tergite VIII 3.13–4.20, 2.67–3.93 and 3.13–3.93 times as long as basal diameter of antennal segment III, respectively. Spiracles round, open, on pale brown spiracular plates.

Head. Head with 1 pair of frontal horns, broadly conical ( Figs 82View FIGURES 81 – 90, 93View FIGURES 91 – 101), 0.86 times as long as its basal width, 1.15–1.50 times as long as antennal segment II. Antenna 4 –segmented ( Figs 83View FIGURES 81 – 90, 94View FIGURES 91 – 101), with sparse wrinkles on apex of processus terminalis, 0.16–0.19 times as long as body; segments I –IV each with 1, 2, 3, 2+0 setae, respectively; setae on segment III 1.33 times as long as basal diameter of the segment; segments III and IV each with one nonciliated primary rhinarium; processus terminalis 0.33–0.40 times as long as base of the segment IV, with 4 apical setae. Rostrum short, reaching mid-coxae; ultimate rostral segment wedge-shaped ( Figs 84View FIGURES 81 – 90, 95View FIGURES 91 – 101), 0.86–1.31 times as long as its basal width, 0.54–0.60 times as long as second hind tarsal segment; with 3 pairs of primary setae, without secondary setae.

Thorax. Mesosternal furca pale brown, with two arms separated ( Figs 85View FIGURES 81 – 90, 96View FIGURES 91 – 101), each arm 2.95 times as long as basal diameter of antennal segment III. Legs smooth, with a few setae. Trochanter and femora fused, hind trochanter and femur 4.14–4.63 times as long as antennal segment III; hind tibia 0.28–0.34 times as long as body; setae on hind tibia 0.90–1.09 times as long as its mid-diameter. First tarsal chaetotaxy: 3, 2, 2.

Abdomen. Siphunculi ring-like ( Figs 87View FIGURES 81 – 90, 98View FIGURES 91 – 101), on abdominal tergite V, apical diameter 2.33–2.87 times as long as basal diameter of antennal segment III. Cauda, anal plate and genital plate with spinules. Cauda knobbed ( Figs 88View FIGURES 81 – 90, 99View FIGURES 91 – 101), constricted near base, 0.48–0.62 times as long as its basal width, with 14–17 long or short setae. Anal plate bilobed ( Figs 89View FIGURES 81 – 90, 100View FIGURES 91 – 101), with 15–18 long or short setae. Genital plate broad round, with 4 short pointed anterior setae and 2 posterior setae ( Figs 90View FIGURES 81 – 90, 101View FIGURES 91 – 101).

Holotype. CHINA: Apterous vivipara, Fujian (Mt. Wuyishan), on one kind of bamboo, 18.v. 2004 (Guo K) [No. 14734 – 1 – 1–2]. Paratypes. CHINA: 1 apterous vivipara and 2 apterous viviparae ( BMNH) [No. 14734]; the other information same as holotype.

Distribution. China (Fujian).

Biology. The new species feeds on Bamboos ( Poaceae  ).

Etymology. The new species, Ceratovacuna separata  is named after the characteristics of its wax plates on abdominal tergites with facets obviously divided to each other, “ separata  ” (Latin word) meaning divided, apart.

Remarks. The new species is most similar to Ceratovacuna silvestrii  in the abdominal tergites I –VI with spinal and pleural wax gland plates and diameter of wax gland facet on dorsum of head similar to that on abdominal tergites, but differs from C. silvestrii  as follows: wax gland plates between eyes composed of 3–5 facets ( C. silvestrii  : 8 or 9)?spinal wax gland plate on abdominal tergite VIII composed of 4–6 facets ( C. silvestrii  : 10 or 11); ultimate rostral segment 0.54–0.60 times as long as second hind tarsal segment ( C. silvestrii  : 0.65–0.83 times).