The larvae of Chinese Hydropsychidae (Insecta: Trichoptera), Part II: Potamyia chinensis and Cheumatopsyche trifascia Author Zhang, Ao College of Science, China Agricultural University, Beijing, China 100193. Author Zhou, Xin Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, China 100193. text Zootaxa 2021 2021-02-10 4926 4 547 558 journal article 8164 10.11646/zootaxa.4926.4.5 bd4ebcbf-d48b-4635-84c1-1f932e4dcb63 1175-5326 4529672 0534BF0D-B6A7-4F0D-8991-F891F561ED9A GENUS Potamyia Banks 1900 A total of 10 Potamyia species have been recorded from China ( Yang et al. 2016 ). Of these, three species were collected during 2004 and 2005 from southern China . In the present study, the larva of P. chinensis ( Ulmer 1915 ) is associated with adults using independent DNA sequences ( Table 1 ; Fig. 1 ), which enables the first report on larval morphology for the species distributed in China . The low association number of species in the genus is mainly due to the fact that Potamyia are mostly inhabitants of large rivers, such as the North American species P. flava (Hagen) ( Wiggins 1996 ) , which presents an obvious challenge for larval collection. Only one larval specimen was collected during the course of this study. TABLE 1. Specimens used in larval-adult association and GenBank accession numbers.
BOLD Sample ID Sex/life stage Taxon GenBank Accession (COI) GenBank Accession (D2) Locality
CNCAD_0003 larva Cheumatopsyche sp. 8 KX105568 MW128399 Guangdong Prov., Nan-kun-shan
CNCAD_0004 larva Cheumatopsyche trifascia KX104817 MW128411 Guangdong Prov., Nan-kun-shan
CNCAD_0005 larva Cheumatopsyche sp. 8 KX106411 MW128400 Guangdong Prov., Nan-kun-shan
CNCAD_0006 larva Cheumatopsyche trifascia KX103841 MW128417 Guangdong Prov., Nan-kun-shan
CNCAD_0012 male Cheumatopsyche trifascia KX106691 MW128415 Guangdong Prov., Nan-kun-shan
CNCAD_0015 male Cheumatopsyche trifascia KX105560 MW128404 Guangdong Prov., Nan-kun-shan
CNCAD_0016 larva Cheumatopsyche nr. infascia KX106960 MW128398 Guangdong Prov., Nan-ling
CNCAD_0017 male Cheumatopsyche trifascia KX102807 MW128403 Guangdong Prov., Nan-ling
CNCAD_0018 male Cheumatopsyche trifascia KX103254 MW128421 Guangdong Prov., Nan-ling
CNCAD_0033 male Cheumatopsyche trifascia KX102642 MW128401 Guangdong Prov., Nan-ling
CNCAD_0041 male Cheumatopsyche trifascia KX104281 MW128424 Guangdong Prov., Da-dong-shan
CNCAD_0042 male Cheumatopsyche trifascia KX104240 MW128419 Guangdong Prov., Da-dong-shan
CNCAD_0046 larva Cheumatopsyche trifascia KX106005 MW128406 Guangdong Prov., Che-ba-ling
CNCAD_0047 larva Cheumatopsyche trifascia KX103903 MW128408 Guangdong Prov., Che-ba-ling
CNCAD_0048 larva Cheumatopsyche trifascia KX103686 MW128418 Guangdong Prov., Che-ba-ling
CNCAD_0051 male Cheumatopsyche dubitans KX103737 MW128391 Guangdong Prov., Che-ba-ling
CNCAD_0052 male Cheumatopsyche longiclasper KX103952 MW128395 Guangdong Prov., Che-ba-ling
CNCAD_0053 male Cheumatopsyche dubitans KX104039 MW128390 Guangdong Prov., Che-ba-ling
CNCAD_0054 male Cheumatopsyche longiclasper KX105192 MW128396 Guangdong Prov., Che-ba-ling
CNCAD_0081 male Cheumatopsyche trifascia KX106615 MW128405 Guangdong Prov., Luo-fu-shan
CNCAD_0089 male Cheumatopsyche trifascia KX105005 MW128423 Guangxi Prov., Shi-wan-da-shan
CNCAD_0090 male Cheumatopsyche guadunica KX104807 MW128393 Guangxi Prov., Cen-wang-lao-shan
CNCAD_0094 male Cheumatopsyche guadunica KX103620 MW128394 Guangxi Prov., Cen-wang-lao-shan
CNCAD_0098 male Potamyia chekiangensis A KX105759 MW128430 Guangxi Prov., Cen-wang-lao-shan
CNCAD_0102 male Potamyia chekiangensis A HM102283 MW128431 Guangxi Prov., Cen-wang-lao-shan
CNCAD_0103 male Cheumatopsyche XZ sp. CN8 KX104356 MW128427 Guangxi Prov., Cen-wang-lao-shan
CNCAD_0119 male Cheumatopsyche trifascia KX104851 MW128409 Guangdong Prov., Qi-mu-zhang
CNCAD_0126 male Potamyia chinensis KX102935 MW128434 Guangxi Prov., Nan-pan-jiang
......continued on the next page TABLE 1. (Continued)
BOLD Sample ID Sex/life stage Taxon GenBank Accession (COI) GenBank Accession (D2) Locality
CNCAD_0128 male Potamyia chekiangensis KX106900 MW128429 Guangxi Prov., Mo-li
CNCAD_0134 male Cheumatopsyche nr. infascia KX103383 MW128397 Guangxi Prov., Yang-shuo
CNCAD_0136 male Cheumatopsyche guadunica KX105980 MW128392 Guangxi Prov., Cen-wang-lao-shan
CNCAD_0185 larva Potamyia chinensis KX104242 MW128432 Guangxi Prov., Mo-li
CNCAD_0204 male Potamyia XZ sp. CN1 KX104739 MW128437 Jiangxi Prov., Lei-gu-ling
CNCAD_0205 male Potamyia chinensis KX107456 MW128433 Sichuan Prov., Tian-quan
CNCAD_0206 male Potamyia chinensis KX106954 MW128436 Sichuan Prov., Ma-bian
CNCAD_0214 male Potamyia XZ sp. CN1 KX107406 MW128438 Jiangxi Prov., Lei-gu-ling
CNCAD_0215 male Potamyia chekiangensis KX104463 MW128428 Jiangxi Prov., Li-tou-jian
CNCAD_0284 male Potamyia chinensis KX104413 MW128435 Jiangxi Prov., Li-tou-jian
CNCAD_CU01 larva Cheumatopsyche trifascia KX104864 MW128416 Guangdong Prov., Nan-ling
CNCAD_CU03 larva Cheumatopsyche trifascia KX103414 MW128410 Guangdong Prov., Nan-ling
CNCAD_CU04 larva Cheumatopsyche trifascia KX105228 MW128420 Guangdong Prov., Nan-kun-shan
CNCAD_CU05 male Cheumatopsyche XZ sp. CN4 KX103452 MW128426 Sichuan Prov., Feng-tong-zhai
CNCAD_CU06 male Cheumatopsyche trifascia KX103028 MW128407 Guangdong Prov., Nan-ling
CNCAD_CU07 male Cheumatopsyche trifascia KX105687 MW128414 Guangdong Prov., Nan-ling
CNCAD_CU08 male Cheumatopsyche trifascia KX107449 MW128402 Guangdong Prov., Nan-ling
CNCAD_CU09 male Cheumatopsyche trifascia KX107172 MW128413 Guangdong Prov., Nan-ling
CNCAD_CU10 male Cheumatopsyche trifascia KX106526 MW128422 Guangdong Prov., Nan-ling
CNCAD_CU11 male Cheumatopsyche trifascia KX105097 MW128412 Guangdong Prov., Nan-ling
CNCAD_PT01 male Cheumatopsyche XZ sp. CN1 KX103917 MW128425 Guangdong Prov., Nan-ling
The species associated here, P. chinensis ( Ulmer 1915 ) is a senior synonym of Hydropsyche echigoensis Tsuda 1949 ( Oláh et al . 2006 , 2008 ) and Cheumatopsyche tienmuiaca Schmid 1965 ( Tian et al. 1996 ; Oláh et al . 2006 , 2008 ). The larva of P. chinensis has been described from Japan ( Tanida 2005 ); we provide here a redescription of the larva of the species based on our Chinese material. Generic characteristics of the genus. Although only one Chinese larval specimen is available at the time of the study, descriptions and illustrations are available for P. flava from North America ( Ross 1944 , 1959 ; Wiggins 1996 ) and for P. chinensis from Japan ( Tanida 2005 ). A few characteristics seem to be consistently diagnostic for the genus: Front margin of frontoclypeal apotome complete and symmetrical; primary setae and some secondary setae on head long and thin; front margin of submentum cleft, anterior borders of two small submental lobes oblique and straight; anterior border of anterior ventral apotome short and protrusive in middle (not obvious in P. chinensis described from Japan ); anterior ventral apotome shorter than sub-mentum; foretrochantin not forked at least in some individuals [a series of intermediates ranging from unforked to forked have been observed in P. flava ( Wiggins 1996 ) ]; prosternal plate large, followed by pair of small posterior prosternal sclerites; pair of ventral tracheal gills present on abdominal segment VII, each with single gill stem.