Kribiodosis cantonensis Han & Liu & Luo & Tang 2021, sp. n.
Creators: name: Han, Wu
name: Liu, Jie
name: Luo, Yifan
name: Tang, Hongqu
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chironomidae
Kribiodosis
Kribiodosis cantonensis

description: Kribiodosis cantonensis Tang sp. n.
http://zoobank.org/ urn:lsid:zoobank.org:act: 553A60FA-8F26-4810-8A0D-6D93B2623A5C
Material examined. Holotype, male. CHINA: Guangdong Province, Guangzhou City, Conghua District, Lyutian Town, Dongkeng Reservoir, 23°53.287′N, 113°55.069′E, alt., 388 m, 23.iii.2015 (emerged 01.iv.2015), H.Q. Tang; paratype, 2 males, 22.iv.2020; 1 female, 27.vi.2020, as previous, light trap, H.Q. Tang.
Etymology. From the type locality, Canton, now Guangzhou.
Male (n = 2–3) (Fig. 2–4)
Total length 3.14–3.63 mm. Wing length 1.55–1.63 mm.
Coloration (Figs. 2–3). Thorax generally brown, with light brown humeral area, scutellum, pleurae and preepisternum. Scutal vittae dark brown. Leg generally brown except pale connection areas in femur-tibia knees and tibia-first tarsus joints in all legs (Fig. 3A, C–D). Tarsomere 4 in fore legs with three dark pseudospurs (Figs. 3B, 4B). Abdomen tergite predominately yellow, with brown conjunctive from T I–VII. T VIII and T IX nearly completely brown. T III with a pair of brown spots subapically (Fig. 2D). Gonocoxite and gonostylus yellow (Figs. 2E–F).
Head. Antennal flagellomere 1–12, 555 μm; flagellomere 13, 600 μm, apex with two long setae (Fig. 2A), AR 1.08. Palpomere lengths (in μm): 30–35; 35; 120–125; 105–120; 200. Temporals 8–12. Clypeus with 9–10 setae.
Thorax (Figs. 2C, 4C). Antepronotals and acrostichals absent, scutum with a prominent scutal tubercle, 15–20 μm high; dorsocentrals 3–4, usually 1 above the humeral area, 1 below the scutal tubercle, and 2 posterior, 2–3 tiny pale pits usually occurred in the middle section. Prealars and supraalars both absent, scutellum with 2 setae. Tiny trans-oval remnants of humeral pits are present.
Wing (Fig. 2B). VR 1.29–1.31. Surface without macrochaetae. R without seta; R 1 with 4–5 setae. R 2+3 almost fused with R 1 in the end; R 4+5 with 2–3 setae distally. Squama bare.
Legs (Fig. 3). Total length of fore leg 5.10 mm, about 6.5 times as long as the thorax height. Fore tibia with a slender, offset spur, 15–20 μm long (Fig. 4A). Mid and hind tibia with one fused comb, bearing a distal hooked spur, 70–80 μm long. LR 1 2.48; LR 2 0.91; LR 3 1.21. BV 1 2.15; BV 2 2.85; BV 3 2.48. SV 1 1.24; SV 2 2.59; SV 3 1.85. BR 1 3.0; BR 2 2.4; BR 3 2.8 (n = 1).
Hypopygium. (Figs. 2E–F; 4D–E). Anal tergite bands well-developed, meeting in the middle, with 1–2 anal median setae. Distal margin with 6–8 setae at each side. Gonocoxite 90–105 μm long, with a longitudinal row of five long setae in the medio-ventral section. Gonostylus 88–98 μm long, inner margin with 6–8 evenly distributed long setae. Superior volsella (Fig. 4F) base without microtrichia, bearing 2–3 inner setae from the tubercle base, distal digitus long and slender, distal gradually attenuated. Inferior volsella slightly bullous distally, with 12–14 setae. HR 1.03–1.07; HV 3.59–3.92.
Female (n = 1) (Fig. 5)
Total length 2.33 mm. Wing length 1.85 mm.
Coloration (Fig. 5A). Similar to male except the abdomen with brown patch, more extensive in anterior 1/5–1/3 of each segment. Tarsomere 4 of fore legs without dark brown pseudospurs.
Head. Eyes bare, with clear dorsal extension, separated by 1.3 times their terminal width. Antenna with five flagellomeres (Fig. 5B), each length (in μm): 150, 105, 110, 65, 130; AR 0.31. Palpomere lengths (in μm): 40; 30; 120; 100; N/A (absent). Temporals 6. Clypeus with 16 setae.
Thorax. Antepronotals and acrostichals both absent, scutal tubercle present; dorsocentrals 4, usually 2 above the humeral area, 1 below the scutal tubercle, and 1 posterior, 2–3 tiny pale pits usually in the middle and posterior section. Prealars and supraalars both absent, scutellum 2. Larger trans-oval remnants of humeral pits present, 30 μm long and 15 μm wide.
Wing. VR 1.30. Surface without macrochaetae. R without seta, R 1 with 9 setae; R 2+3 indistinct, almost fused with R 1 all through the length; R 4+5 with 5–6 setae distally. Squama bare.
Legs. Total length of fore leg 6.03 mm, about 8.0 times as long as the thorax height. Fore tibia with a slender spur, 50 μm long. Mid and hind tibia with two fused combs, with a distal–hooked spur, 70–75 μm long. LR 1 3.08; LR 2 1.0; LR 3 no data. BV 1 2.05; BV 2 3.0; BV 3 no data. SV 1 1.03; SV 2 2.42; SV 3 no data. Bristles of legs unmeasurable.
Genitalia (Fig. 5C). S VIII without distinct oval depression, with 16–18 setae. Coxosternapodeme V-shaped, fused in the middle. Notum 150 μm long, about three times as long as the rami. Lateral sternite IX with three setae. Dorsomesal lobe prominent, expanded post-medially; ventrolateral lobe reduced into a small strip, hidden below the well-developed dorsomesal lobe. Apodeme lobe without microtrichia. Two spermatheca oval, 70 μm in the long axis. Postgenital plate triangular shaped. Cercus ship-shaped, 80 μm long.
Pupa. Possibly under the description of Zavreliella shidai Cao & Tang, 2017 in error (see discussion).
Larva. Unknown.
description: Published as part of Han, Wu, Liu, Jie, Luo, Yifan & Tang, Hongqu, 2021, No longer endemic to Africa: Kribiodosis Kieffer, 1921 (Diptera, Chironomidae) new to Oriental China with a phylogeny and expanded adult generic diagnoses, pp. 560-574 in Zootaxa 5072 (6) on pages 564-569, DOI: 10.11646/zootaxa.5072.6.4, http://zenodo.org/record/5751653