taxonID	type	description	language	source
03AFDD301416BA66FF14FDE3FDC70BCC.taxon	description	Male imago: body length 7.0 – 8.0 mm, caudal filaments 7.0 – 9.0 mm, forewing 7.0 – 8.0 mm, hindwing 1.5 – 2.0 mm. Body generally brown to black (Fig. 3 A). Antennae brown except apex, with setae ring between segments. Upper portion of compound eyes reddish to pink while basal portion dark; distance between two eyes shorter than half width of median ocellus. Ocelli with dark base but pale apex. Prosternum dark brown, with slightly converging anteriorly longitudinal carinae, maximum width between carinae ca. 1.5 X minimum width. Basisternum of mesosternum dark brown, with parallel furcasternum (Fig. 4 C). Forewing: transparent except around stigma area; a long vein between C and Sc of stigma divided crossveins into two portions. Rs leaves MA at very base, MA forked at 2 / 3 point from base to outer margin; MP forked more basal than fork of Rs; marginal intercalaries almost meet nearby crossveins (Figs. 4 A, 5 A). Hindwing: costal projection small, rounded, located at 1 / 3 point from base to apex; MP forked between forks of R 1 + MA and MA (Figs. 4 B, 5 B). Legs: femora: tibiae: tarsi of foreleg = 1.4: 2.2: 1.7, tarsal segments 1 – 5 arranged in decreasing order = 2, 3, 4, 5, 1; femora brown, tibiae dark, tarsi pale, first segment of tarsi much shorter than others (Fig. 3 A). Femora: tibiae: tarsi of midleg = 1.0: 0.7: 0.4, tarsal segments arranged in decreasing order = 5, 1, 2, 3, 4; color pattern similar to foreleg except basal tarsi brown. Femora: tibiae: tarsi of hindleg = 1.3: 1.0: 0.5, tarsal segments arranged in decreasing order = 5, 1, 2, 3, 4, color pattern similar to midleg (Fig. 3 A). Claws of all legs similar: one blunt and one hooked. Genitalia: styliger plate with median projected lobe. Basal segment of forceps broader than others but much shorter than second one; second segment slightly constricted at point in apical 1 / 3, bending inwards smoothly. Length of segment III ca. 2 X width, slightly tapered from base to apex. Penes length 2 / 3 length of forceps, with irregular dark stripes or streaks, slightly narrowed from base to apex, with shallow median emargination (Fig. 4 E – G). Caudal filaments dark in basal 1 / 3, other portion pale (Fig. 3 A). Female imago: body length 6.5 – 8.0 mm, caudal filaments 7.0 – 9.0 mm, forewing 7.5 – 9.0 mm, hindwing 1.5 – 2.0 mm. Color pattern similar to male (Fig. 3 B). Lengths of femur: tibia: tarsus of foreleg = 1.0: 1.3: 0.7, tarsal segments arranged in decreasing order of length = 5, 2, 3, 4, 1; femur: tibia: tarsus of midleg = 1.1: 0.9: 0.5, tarsal segments arranged in decreasing order = 5, 3, 2, 4, 1; femur: tibia: tarsus of hindleg = 1.4: 1.1: 0.5, tarsal segments arranged in decreasing order = 5, 3, 2, 4, 1. Sterna of segment VII extended into narrow lobe, subanal plate with depressed posterior margin (Fig. 4 D). Male subimago (Fig. 3 C): body length 6.0 – 7.5 mm, caudal filaments 6.0 – 8.0 mm, forewing 7.0 – 8.5 mm, hindwing 1.4 – 1.8 mm. Body general brown to gray. Scutellum with long and pointed posterior prolongation. Forewings and hindwings semi-hyaline, with tiny setae on hind margins. Lengths of femur: tibia: tarsus of foreleg = 0.8: 1.0: 0.9, tarsal segments arranged in decreasing order of length = 3, 2, 4, 5, 1; femur: tibia: tarsus of midleg = 0.9: 0.7: 0.4, tarsal segments arranged in decreasing order = 5, 1, 2, 3, 4; femur: tibia: tarsus of hindleg = 1.0: 0.8: 0.4, tarsal segments arranged in decreasing order = 5, 1, 2, 3, 4. Female subimago (Fig. 3 D): body length 5.5 – 7.0 mm, caudal filaments 6.0 – 7.5 mm, forewing 7.0 – 8.0 mm, hindwing 1.4 – 1.8 mm. Body general yellowish to brown. Lengths of femur: tibia: tarsus of foreleg = 0.8: 0.8: 0.5, tarsal segments arranged in decreasing order of length = 5, 2, 3, 1, 4; femur: tibia: tarsus of midleg = 0.9: 0.7: 0.4, tarsal segments arranged in decreasing order = 5, 1, 2, 3, 4; femur: tibia: tarsus of hindleg = 1.2: 1.0: 0.5, tarsal segments arranged in decreasing order = 5, 1, 2, 3, 4. Egg. Scanned egg is 0.13 mm length and 0.08 mm width. Oval, with one polar cap, surface sculptured with hexagonal structures and decorated with sparse tubercle-like projections (Fig. 6).	en	Zhang, Min, Li, Wen-Juan, Ying, Xiao-Li, Zhou, Chang-Fa (2021): The Imaginal Characters of Cincticostella gosei (Allen, 1975) linking the genus Cincticostella Allen, 1971 to Ephacerella Paclt, 1994 (Ephemeroptera: Ephemerellidae). Zootaxa 5081 (1): 131-140, DOI: https://doi.org/10.11646/zootaxa.5081.1.5
03AFDD301416BA66FF14FDE3FDC70BCC.taxon	distribution	Distribution. China (Yunnan, Guizhou, Sichuan, Anhui, Gansu, Jiangxi, Zhejiang, Jiangsu, Shaanxi, Henan provinces), Thailand, India (Fig. 7).	en	Zhang, Min, Li, Wen-Juan, Ying, Xiao-Li, Zhou, Chang-Fa (2021): The Imaginal Characters of Cincticostella gosei (Allen, 1975) linking the genus Cincticostella Allen, 1971 to Ephacerella Paclt, 1994 (Ephemeroptera: Ephemerellidae). Zootaxa 5081 (1): 131-140, DOI: https://doi.org/10.11646/zootaxa.5081.1.5
03AFDD301416BA66FF14FDE3FDC70BCC.taxon	biology_ecology	Ecology. The stream where the C. gosei nymphs were collected is 4.0 – 8.0 m wide, with water depth 0.2 – 0.5 m, and contains stones of various sizes (Fig. 8). The nymphs were collected under stones. The nymphs emerged at about 4: 00 PM to 8: 00 PM local time in April, most around 5: 00 PM; before molting to subimago, the nymph were seen climbing on the substrates underwater or floating on water surface for about 30 minutes. Subimagos persisted for 24 – 36 hours, most of them molted around 1: 00 AM to 6: 00 AM. The observed lifespan of imagos was about 3 days. Molecular similarity: The COI gene sequence of our C. gosei is most similar to Thai materials under the same species name. The distance between them is 0.170 while the average distance of known species in the genus Cincticostella is 0.217 – 0.270 (Table 2).	en	Zhang, Min, Li, Wen-Juan, Ying, Xiao-Li, Zhou, Chang-Fa (2021): The Imaginal Characters of Cincticostella gosei (Allen, 1975) linking the genus Cincticostella Allen, 1971 to Ephacerella Paclt, 1994 (Ephemeroptera: Ephemerellidae). Zootaxa 5081 (1): 131-140, DOI: https://doi.org/10.11646/zootaxa.5081.1.5
