Taenionema sinensis sp. n., the first endemic species of Taenionema Banks, 1905 (Plecoptera, Taeniopterygidae) from China Chen, Zhi-Teng Ye, Xiao-Han Biodiversity Data Journal 2023 2023-06-08 11 104618 104618 CC50A01F-0FE8-5857-A33D-491A548CE817 Chen & Ye, 2023 Chen & Ye 2023 Insecta Taeniopterygidae Taenionema CoL Animalia Taenionema sinensis Plecoptera 0 104618 Arthropoda species sinensis sp. n.  Materials   Type status:  Holotype.  Occurrence:individualCount: 1; sex: male;  Taxon:kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Plecoptera; family: Taeniopterygidae; genus: Taenionema; specificEpithet: sinensis; taxonRank: species; nomenclaturalCode: ICZN;  Location:country: China; stateProvince: Zhejiang; municipality: Quzhou; locality: Yaowangshan; verbatimElevation:   250 m; verbatimCoordinates: 28°46′23″N, 118°58′33″E;  Identification:identifiedBy:  Zhi-Teng Chen;  Event:verbatimEventDate: 08-03-2020; Record Level:institutionCode: ICJUST  Type status:  Paratype.  Occurrence:individualCount: 10; sex: 3 males, 5 females, 2 larvae; occurrenceID: B324F1FF-17C0-5672-863D-A01EE394EC87;  Taxon:kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Plecoptera; family: Taeniopterygidae; genus: Taenionema; specificEpithet: sinensis; taxonRank: species; nomenclaturalCode: ICZN;  Location:country: China; stateProvince: Zhejiang; municipality: Quzhou; locality: Yaowangshan; verbatimElevation:   250 m; verbatimCoordinates: 28°46′23″N, 118°58′33″E;  Identification:identifiedBy:  Zhi-Teng Chen;  Event:verbatimEventDate: 08-03-2020; Record Level:institutionCode: ICJUST  Type status:  Paratype.  Occurrence:individualCount: 5; sex: larvae; occurrenceID: A07BC7BA-0984-57F5-AB74-B0646C2CC696;  Taxon:kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Plecoptera; family: Taeniopterygidae; genus: Taenionema; specificEpithet: sinensis; taxonRank: species; nomenclaturalCode: ICZN;  Location:country: China; stateProvince: Zhejiang; municipality: Quzhou; locality: Yaowangshan; verbatimElevation:   250 m; verbatimCoordinates: 28°46′23″N, 118°58′33″E;  Identification:identifiedBy:  Zhi-Teng Chen;  Event:verbatimEventDate: 14-03-2020; Record Level:institutionCode: ICJUST  Type status:  Paratype.  Occurrence:individualCount: 11; sex: 1 female, 10 larvae; occurrenceID: 4700AC73-4BE1-5FDD-8B88-CE2D082056B6;  Taxon:kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Plecoptera; family: Taeniopterygidae; genus: Taenionema; specificEpithet: sinensis; taxonRank: species; nomenclaturalCode: ICZN;  Location:country: China; stateProvince: Fujian; municipality: Nanping; locality: Wuyishan; verbatimElevation:   730 m; verbatimCoordinates: 27°44′47″N, 117°41′2″E;  Identification:identifiedBy:  Zhi-Teng Chen;  Event:verbatimEventDate: 08-03-2022; Record Level:institutionCode: ICJUST  Description   Male.Body length 5.0-7.0 mm (n = 4), colour mostly dark brown (Fig. 2). Head rounded, with three normally-developed ocelli; compound eyes dark. Antennae dark brown and slender, nearly two times longer than body. Pronotum near trapezoidal, bearing scattered rugosities, corners obtuse. Macropterous (Figs 2, 3), forewings length 8.0-8.5 mm (n = 4), hind-wings length 7.0-7.5 mm (n = 4). Wings hyaline, veins brown, without spots. In forewings (Fig. 3), RP with two branches; CuA with two branches. In hind-wings (Fig. 3), RP with two branches; six anal veins present. Legs elongated, brown to dark brown. Abdominal terga 1-9 unmodified. Tergum 10 with two rounded posterior lobes, distance between the lobes equal to the lobe length (Figs 4, 5). Basal plate of tergum 10 sclerotised, lateral struts broad, medial strut broad and forked. Epiproct composed of an upper narrow lobe and a lower bulb, both directed posteriad; the upper lobe expanded laterally and tongue-shaped in dorsal view, finger-shaped in lateral view, gradually tapering to apex; the lower bulb rounded, funnel-shaped in lateral view, posteriorly with a cylindrical projection. Paraprocts asymmetrical, forming three main lobes, including a V-shaped lateral sclerite, a conical median membrane and a finger-shaped lateral sclerite. Cercus eight-segmented, with an ellipsoidal, weakly sclerotised basicercal process, apex with a tiny knob. Sternum 9 broadly-developed, apical half strongly recurved and deeply cleft, forming two pointed lobes.  Female.Body length 6.0-9.0 mm (n = 5), general colour and pattern similar to the male (Fig. 6). Macropterous; forewing length 9.0-10.0 mm (n = 5), hind-wing length 7.0-8.0 mm (n = 5). The genital opening present on posterior half of sternum 8, with two slender lateral sclerites that are convergent posteriorly (Fig. 6). Cercus six-segmented, apically with a small dark knob. Sternum 9 with two dark longitudinal sclerites lateral to the median membranous area. Postgenital plate broad basally, gradually tapering towards apex, length subequal to basal width, apex truncate or slightly notched.  Larva.Described in Chen and Ye (2020).  Diagnosis   Taenionema sinensissp. n. can be distinguished from all congeners by the following characters: adult males with deeply notched, bilobed sternum 9; adult females with a posteriorly truncate postgenital plate; male larvae with a notched subgenital plate and hook-shaped paraprocts.  Etymology The specific epithet refers to the first new species of  Taenionemaknown from China, treated as an adjective.  Distribution China: Zhejiang Province; Fujian Province (Fig. 1A).  Biology   Taenionema sinensissp. n. has been observed to inhabit moderately-sized creeks (to 10 m wide) characterised by fast-flowing, clear water and boulder and cobble substrates (Fig. 1B and C). Adults of  T. sinensissp. n. were primarily found on stream-side plants, with one male adult being captured by a light trap, suggesting a possible positive phototactic response. Adult emergence for  T. sinensissp. nov. occurs in early March. Despite the suitable habitat, the population density of  T. sinensissp. n. is low in both Zhejiang and Fujian Provinces. The habitat was found to be populated with numerous other stoneflies, including species of Leuctridae, Nemouridae, Peltoperlidae, Perlidae, Perlodidaeand Styloperlidae. 2020-03-08 China Occurrence Zhi-Teng Chen 0 28.773056 Animalia 20 118.97583 Taxon 0 104618 1 1 Zhejiang Holotype 2020-03-08 China Occurrence Zhi-Teng Chen 0 28.773056 Animalia 20 118.97583 Taxon 1 1 Zhejiang Holotype 2020-03-08 China Occurrence Zhi-Teng Chen 0 28.773056 Animalia 20 118.97583 Taxon 0 104618 10 5 2 3 Zhejiang Paratype 2020-03-08 China Occurrence Zhi-Teng Chen 0 28.773056 Animalia 20 118.97583 Taxon 10 5 2 3 Zhejiang Paratype 2020-03-14 China Occurrence Zhi-Teng Chen 0 28.773056 Animalia 20 118.97583 Taxon 0 104618 5 5 Zhejiang Paratype 2020-03-14 China Occurrence Zhi-Teng Chen 0 28.773056 Animalia 20 118.97583 Taxon 5 5 Zhejiang Paratype 2022-03-08 China Occurrence Zhi-Teng Chen 0 27.74639 Animalia 20 117.68389 Taxon 0 104618 11 1 10 Fujian Paratype 2022-03-08 China Occurrence Zhi-Teng Chen 0 27.74639 Animalia 20 117.68389 Taxon 11 1 10 Fujian Paratype