Stegana (Oxyphortica) maichouensis Sidorenko 1998
Creators: name: Wang, Nannan
name: Zhang, Yuan
name: Cheng, Yu
name: Chen, Hongwei
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Drosophilidae
Stegana
Stegana maichouensis

description: <i>Stegana</i> (<i>Oxyphortica</i>) <i>maichouensis</i> Sidorenko (Figures 2(e), 4(a), 5(f) and 7) <i>Stegana</i> (<i>Oxyphortica</i>) <i>maichouensis</i> Sidorenko, 1998: 289. <i>Diagnosis</i> Surstylus with two long prensisetae (one each basally and apically) (Figure 7 (a, b)); gonopods with three strongly sclerotized, suberect processes dorsoapically, the median bifurcate (Figure 7 (e)). The 8.4% interspecific genetic distance to <i>S</i>. (<i>O</i>). <i>triodonta</i> sp. nov. is one of the smallest interspecific distances ascertained within this subgenus; see under that species. <i>Description</i> Clypeus brown. Palpus yellow. Mesoscutum yellow anteromedially, yellowish brown laterally and posteriorly (Figure 4 (a)). Scutellum yellowish brown, yellow at tip (Figure 4 (a)). Katepisternum yellow. Wing yellowish, brownish anterodistally (Figure 2 (e)). Abdominal tergites: 1st yellow; 2nd yellow submedially, with one brownish patch medially, dark brown on lateral and posterior margins; 3rd to 5th yellow on anterior margin, dark brown on posterior margins; 6th yellow medially, dark brown laterally (Figure 5 (f)). Male terminalia: Epandrium undeveloped on posterolateral corners, with 1.13, rcorb = 0.47–0.73, vb = 0.36–0.70, dcl = 0.34–0.52, presctl = 0.39–0.56, sctl = 1.10– 1.33, sterno = 0.71–0.95, orbito = 1.43–2.00, dcp = 0.20–0.32, sctlp = 0.80–0.93, C = 2.50– 3.27, 4c = 0.71–0.94, 4v = 1.77–2.39, 5x = 1.36–1.82, ac = 4.80–6.20, M = 0.50–0.70, C3F = 1.00. Figure 2 . Wing ( same in male and female ) . ( a ) Stegana ( Oxyphortica ) acutipenis Xu , Gao and Chen , 2007 ; ( b ) S . ( O . ) adentata Toda and Peng , 1992 ; ( c ) S . ( O . ) hirtipenis Xu , Gao and Chen , 2007 ; ( d ) S . ( O . ) latipenis Xu , Gao and Chen , 2007 ; ( e ) S . ( O . ) maichouensis Sidorenko , 1998 ; ( f ) S . ( O . ) chuanjiangi Zhang and Chen , sp . nov . ; ( g ) S . ( O . ) dainuo Wang and Chen , sp . nov . ; ( h ) S . ( O . ) dawa Zhang and Chen , sp . nov . dense pubescence and setae ( Figure 7 ( a )) . Cercus lacking pubescence ( Figure 7 ( a )) . Surstylus small , lobe-shaped , with several small setae distally ( Figure 7 ( a , b )) . Parameres absent ( Figure 7 ( c , d )) . Aedeagus strongly broadened mediolaterally and sclerotized except peristome , haired along peristome ( Figure 7 ( c , d )) . Measurements BL = 2.67 – 2.93 mm in fi ve males , 2.83 – 3.53 mm in fi ve females , ThL = 1.30 – 1.47 mm in males , 1.20 – 1.57 mm in females , WL = 2.10 – 2.30 mm in males , 2.07 – 2.60 mm in females , WW = 0.97 – 1.07 mm in males , 0.93 – 1.20 mm in females , arb = 5 – 7 / 3 – 5 , avd = 0.67 – 0.87 , adf = 2.60 – 3.25 , fl w = 2.00 – 2.80 , FW / HW = 0.36 – 0.47 , ch / o = 0.09 – 0.13 , prorb = 0.95 – <i>Specimens examined</i> China: nine males, two females (SCAU, Nos. 121460–70), Menglun, Mengla, Yunnan, 21°41 <i>ʹ</i> N, 101°25 <i>ʹ</i> E, altitude 680 m, 6 September 2002, 17 April 2007, 10 April 2010, ex tree trunks and tussock, HW Chen, JJ Gao, YR Su; 23 males, 20 females (five males, five females in KIZ, Nos. 0088127–36; 18 males, 15 females SCAU, 124670–702), Mengyuan, Mengla, Yunnan, 21° 47 <i>ʹ</i> 29 <i>ʹ</i> ’N, 101°22 <i>ʹ</i> 59 <i>ʹ</i> ’E, altitude 990 m, 6–7 August 2016, ex tree trunks and tussock, HW Chen, L Gong, YQ Liu. <i>Distribution</i> China (Yunnan); Vietnam.
description: Published as part of <i>Wang, Nannan, Zhang, Yuan, Cheng, Yu &amp; Chen, Hongwei, 2017, Nine new species of the subgenus Stegana (Oxyphortica) from the Oriental region, with morphological and molecular evidence based on Chinese species (Diptera: Drosophilidae), pp. 1943-1970 in Journal of Natural History 51 (33 - 34)</i> on pages 1948-1953, DOI: 10.1080/00222933.2017.1360960, http://zenodo.org/record/5182851
description: {"references": ["Sidorenko VS. 1998. New Asian species and new records of the genus Stegana Meigen (Diptera, Drosophilidae). III. Descriptions, taxonomic remarks and key to the Asian species. Ann Soc Entomol Fr. 34: 285 - 300.", "Xu MF, Gao JJ, Chen HW. 2007. Three new species of Stegana (Oxyphortica) from Yunnan Province, southwestern China (Diptera: Drosophilidae). Raffles Bull Zool. 55: 43 - 47.", "Toda MJ, Peng TX. 1992. Some species of the subfamily Steganinae (Diptera: Drosophilidae) from Guangdong Province, southern China. Ann Soc Entomol Fr. 28: 201 - 213."]}