taxonID	type	description	language	source
03EE87EDC074FFF2F166EDD7F41DC9F2.taxon	discussion	(S. flavata unknown)	en	Stark, Bill P., Sivec, Ignac (2008): Studies On Sinacroneuria Yang & Yang (Plecoptera: Perlidae) With Description Of New Species From China And Vietnam. Illiesia 4 (15): 150-153, DOI: 10.5281/zenodo.4754757
03EE87EDC074FFF0F1B3EE29F335CC09.taxon	description	(Figs. 1 - 4)	en	Stark, Bill P., Sivec, Ignac (2008): Studies On Sinacroneuria Yang & Yang (Plecoptera: Perlidae) With Description Of New Species From China And Vietnam. Illiesia 4 (15): 150-153, DOI: 10.5281/zenodo.4754757
03EE87EDC074FFF0F1B3EE29F335CC09.taxon	materials_examined	Material studied. Holotype ♂ from Vietnam, Lao Cai, Sapa, large waterfall on Sapa to Lai Chau road, UV light, 8 May 1995, D. Currie, B. Hubley, J. Swann, ROM 956022 (ROM) Adult habitus. Biocellate. Head with large dark brown area covering ocelli and extending to M-line (Fig. 1); lappets and saggitate mark forward of M-line pale brown. Pronotum pale brown with scattered obscure rugosities on disk; margins and median suture dark brown. Wing membrane transparent, veins pale brown. Femora pale but slightly darker along dorsal edge; tibiae brown. Segments on basal half of antennal flagellum dark brown but apical segments pale. 1 3 Male. Forewing length 16.5 mm. Tergum 9 with sparse mesal patch of sensilla basiconica narrowly divided along midline; tergum 10 with sensilla basiconica patches widely separated and tergum almost divided by membrane (Fig. 2). Paraproct tips small, acute and darkly sclerotized. Cerci short, consisting of about 14 segments. Hammer present on sternum 9. Y-stem of aedeagal sclerite short (Fig. 3); arms wide basally and about 2.5 times long as stem; ventral surface of aedeagus armed with a slender, median sclerite, sparsely covered with small spines (Fig. 4). 4 Female. Unknown. Larva. Unknown.	en	Stark, Bill P., Sivec, Ignac (2008): Studies On Sinacroneuria Yang & Yang (Plecoptera: Perlidae) With Description Of New Species From China And Vietnam. Illiesia 4 (15): 150-153, DOI: 10.5281/zenodo.4754757
03EE87EDC074FFF0F1B3EE29F335CC09.taxon	etymology	Etymology. The species name refers to the presence of only two ocelli on this species.	en	Stark, Bill P., Sivec, Ignac (2008): Studies On Sinacroneuria Yang & Yang (Plecoptera: Perlidae) With Description Of New Species From China And Vietnam. Illiesia 4 (15): 150-153, DOI: 10.5281/zenodo.4754757
03EE87EDC074FFF0F1B3EE29F335CC09.taxon	diagnosis	Diagnosis. Sinacroneuria biocellata adults are distinguished from those of congeners by the presence of only two ocelli. Males appear to have more widely separated sensilla patches on tergum 10 and those on tergum 9 are less abundant and form a more-or-less united patch. Additionally the aedeagal sclerite Y-stem is relatively shorter than is shown by Yang & Yang (1995) for S. orientalis. Yang & Yang (1995) also show the 10 th tergum of the male to be completely divided by membrane, and this species has the membrane strip incomplete.	en	Stark, Bill P., Sivec, Ignac (2008): Studies On Sinacroneuria Yang & Yang (Plecoptera: Perlidae) With Description Of New Species From China And Vietnam. Illiesia 4 (15): 150-153, DOI: 10.5281/zenodo.4754757
03EE87EDC076FFF1F327EA76F004CCF9.taxon	description	(Figs. 5 - 6)	en	Stark, Bill P., Sivec, Ignac (2008): Studies On Sinacroneuria Yang & Yang (Plecoptera: Perlidae) With Description Of New Species From China And Vietnam. Illiesia 4 (15): 150-153, DOI: 10.5281/zenodo.4754757
03EE87EDC076FFF1F327EA76F004CCF9.taxon	materials_examined	Material examined. Holotype ♂ (pinned) from China, Szechuan [Sichuan] Province, Mt. Omei [Emei Shan], July 1936, D. C. Graham (USNM). Adult habitus. Triocellate. General color pattern pale brown but details obscured due to specimen condition. Ocellar triangle covered with dark pigment but most of head apparently pale brown. Wings pale, veins yellow brown. Femora yellow brown, tibiae slightly darker. Male. Forewing length 21 mm. Tergum 9 produced along posterior margin into a small lobe projecting over base of tergum 10; lobe densely armed with prominent sensilla basiconica. Tergum 10 with sensilla basiconica patches separated by posterior incursion of U-shaped membranous area (Fig. 5). Paraproct tips small, acute and darkly sclerotized. Hammer present on sternum 9. Aedeagus armed with massive Y-shaped sclerite with long projecting horns and short stem; lateral aspect of apical aedeagal section with narrow supporting sclerites. Basal section of aedeagus membranous but armed with a band of brown, setal spines across ventrobasal area (Fig. 6). Female. Unknown. Larva. Unknown.	en	Stark, Bill P., Sivec, Ignac (2008): Studies On Sinacroneuria Yang & Yang (Plecoptera: Perlidae) With Description Of New Species From China And Vietnam. Illiesia 4 (15): 150-153, DOI: 10.5281/zenodo.4754757
03EE87EDC076FFF1F327EA76F004CCF9.taxon	etymology	Etymology. The species name is based on the prominent aedeagal horns.	en	Stark, Bill P., Sivec, Ignac (2008): Studies On Sinacroneuria Yang & Yang (Plecoptera: Perlidae) With Description Of New Species From China And Vietnam. Illiesia 4 (15): 150-153, DOI: 10.5281/zenodo.4754757
03EE87EDC076FFF1F327EA76F004CCF9.taxon	diagnosis	Diagnosis. This species appears to be distinct from others on the basis of the large horn-like aedeagal sclerite with short Y-stem, the basal, aedeagal, setal spine patch, and the small, projecting mesal lobe on tergum 9. The holotype specimen bears a determination label of “ Acroneuria yiui (Wu) ” by Nathan Banks, but that species lacks the lobe on tergum 9 (Wu 1935; Yang & Yang 1998), and the aedeagus lacks the Y-shaped sclerite of this species (Yang & Yang 1998). The type specimen was previously studied by the senior author in 1974 and at that time, the aedeagus was fully everted and drawn but a decision was made to wait for fresh material before publication. Now, more than 34 years later, we proceed in order to continue the documentation of the diverse and interesting Asian stonefly fauna.	en	Stark, Bill P., Sivec, Ignac (2008): Studies On Sinacroneuria Yang & Yang (Plecoptera: Perlidae) With Description Of New Species From China And Vietnam. Illiesia 4 (15): 150-153, DOI: 10.5281/zenodo.4754757
