Cingola circularis, Jiao & Bu, 2014

Jiao, Ke-Long & Bu, Wen-Jun, 2014, Notes on the supertribe Brachineuridi (Diptera: Cecidomyiidae) with description of two new species of the genus Cingola Fedotova & Sidorenko from China, Zoological Systematics 39 (1) : -

4.1 Cingola circularis sp. nov. ( Figs 1–4 , 7–11 , 16 )

Male. Body colour brown. Body length 0.85–1.05 mm (n = 8). Wing length (measured from the base) 0.75–0.95 mm (n = 8). Wing width 0.35–0.45 mm (n = 8).

Head ( Figs 7–8 ). Eye bridge 5 facets long in the middle of vertex as in Fig. 8 . Palpus sparsely setose, with palpiger and 3 segments, last two segments longer than first one as in Figs 7–8 . Antenna ( Fig. 7 ) with 10 flagellomeres; pedicel subglobular, smaller than scape, both densely covered with setae ventrally; node of all flagellomeres subcylindrical, a little broadened subbasally, neck of all flagellomeres shorter; each node with 2 horizontal, appressed, band-shaped circumfila, subapically and subbasally respectively linked by two similar longitudinal circumfila, and 2 whorls of long, strong and irregular setae, one subbasal and one subapical; first and second flagellomeres fused; 3rd flagellomere as in Fig. 1 , with the node 1.5–1.8 times as long as wide and the neck 1.2–1.4 times as long as wide, 0.30–0.35 times length of node.

Thorax ( Fig. 9 ). Wing ( Fig. 10 ) hyaline, 2.0–2.2 times as long as wide. Vein Sc weak, C, R 1 and R 5 strong; R 1 joining C before the half wing, with two pores respectively at basal 2/5 and at the apex; R 5 bent a little forward, joining C anterior to wing apex, with two pores respectively at basal 1/3 and near the apex; vein M missing; vein Cu unforked and bent backward, vein PCu parallel with Cu. Legs densely covered with narrow scales and sparse setae; femur of fore-, mid- and hindlegs shorter than tibia, with proportions respectively 0.75–0.85, 0.75–0.85 and 0.80–0.90 times; the second tarsus of fore-, mid- and hindlegs shorter than tibia, with proportions respectively 0.68–0.72, 0.50–0.65 and 0.70–0.80 times. Tarsal

© Zoological Systematics, 39 (1): 154–161 claw ( Fig. 2 ) toothed on all legs; empodium as long as tarsal claw; pulvillus cylindrical, 1/2 length of claw.

Abdomen ( Fig. 11 ). Each tergite and sternite densely covered uniformly with scales. 1–6 tergites developed and strip-shaped; first tergite reduced to a thin and latitudinal band, much shorter than second tergite, with an irregular but mostly single row of setae; 2–6 tergites with an irregular but mostly single, posterior row of setae, with respectively 0–3 pairs of lateral setae, and with two pairs of trichoid sensilla including one anterior and one posterior except for sixth tergite only with one anterior pair of trichoid sensilla; seventh and eighth tergites both reduced to one strongly sclerotized, latitudinal and linear band with several scattered setae. 2–8 sternites covered with many scattered lateral and central setae; 2–7 sternites sub-rectangular; 2–4 sternites with an irregular but mostly single, posterior row of setae; 5–8 sternites with an irregular but mostly double, posterior row of setae; seventh sternite shorter than sixth; eighth sternite crescent, shorter and much narrower than seventh.

Genitalia ( Figs 3–4 , 16 ). Gonocoxite with slender, protruding and densely pubescent mediobasal lobe having the length approximately 1/3 of aedeagus; gonostylus slender and strongly arched inwardly at basal 2/5, gradually tapering from base to apex, approximately 3/4 length of gonocoxite, covered with a few setae and dense microtrichiae, with one short setae located apically on the inner side, toothed apically; cerci separated deeply and broadly with a U-shaped

© Zoological Systematics, 39 (1): 154–161

© Zoological Systematics, 39 (1): 154–161

depression forming two lobes 1.50–1.65 times as long as wide in the middle, rounded apically with a few long lateral setae; hypoproct not sclerotized, approximately as long as cerci, slightly emarginated, forming two apically rounded lobes approximately as long as wide, each with a few short setae; aedeagus gradually tapered to apex, a little longer than gonocoxite, at distal 1/4 with a pair of sensory setae dorsally on both sides, without prominences on both sides; tegment developed, approximately half as long as aedeagus, gradually tapered to subapex, distally with chrysanthemum-shaped sclerotized structure.

Female. Unknown.

Holotype male. China, Yunnan, Simao (now as Pu’er), Caiyang River Nature Reserve, Mt. Luoluoxinzhai (22.48°N, 100.58°E; alt. 1 500 m), 20 May 2002, Wen-Jun Bu leg., Malaise trap, NKUCecid. No. BAK001 . Paratypes: 1 male, ibid., 17 May 2002, NKUCecid. No. BAK002 ; 1 male, ibid., 27 May 2002, NKUCecid. No. BAK003 ; 2 males, China, Yunnan, Jingdong, Mt. Wuliang, Manwan (24.4°N, 100.8°E; alt. 1 150 m), 30–31 May 2001, Jun Li leg., Malaise trap, NKUCecid. No. BAK004–005 ; 2 males, China, Jiangxi, Yifeng, Guan Mountain Nature Reserve, East River Station (27.07°N, 104.09°E), 29 July–1 August 2002, Huai-Jun Xue leg., alt. 1 000 m, Malaise trap, NKUCecid. No. BAK006–007 ; 1 male, China, Henan, Songxian, Baiyun Mountain Forest Farm (33.66°N, 111.75°E; alt. 1 400 m), 16 July 1996, Jun Li leg., NKUCecid. No. BAK008. All type specimens deposited in NKUM .

Distribution. China (Henan, Jiangxi, Yunnan).

Etymology. The specific name circularis means the male hypoproct apically with two rounded lobes.

Figures

Figs 1–6. Male. 1–4. Cingola circularis sp. nov. 5–6. Cingola ceratodicrata sp. nov. 1. 3rd flagellomere. 2. Fore acropod, lateral view. 3, 6. Genitalia. 4–5. Genitalia, cerci and hypoproct removed. 1, 3–6. Dorsal view. Scale bars: 1–2 = 50μm, 3–6 = 100μm.

Figs 7–11. Cingola circularis sp. nov., male (photomontaged by Auto-Montage Essentials software). 7. Head, anterior view. 8. Head, anterior view, 3rd–10th flagellomeres removed. 9. Thorax, lateral view, wings and legs removed. 10. Wing. 11. Abdomen, dorsal view. Scale bars: 7, 9–11 = 100μm, 8 = 50μm.

Fig. 16. Cingola circularis sp. nov., male (photomontaged by Auto-Montage Essentials software), genitalia and abdominal segments 6–8, dorsal view. Fig. 17. Cingola ceratodicrata sp. nov., male (photomontaged by Auto-Montage Essentials software), genitalia and abdominal segments 7–8, dorsal view. Scale bars = 50μm.