Stegana (Oxyphortica) maichouensis Sidorenko, 1998

Wang, Nannan, Zhang, Yuan, Cheng, Yu & 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), Journal of Natural History 51 (33 - 34), pp. 1943-1970 : 1948-1953

publication ID	https://doi.org/ 10.1080/00222933.2017.1360960
publication LSID	lsid:zoobank.org:pub:2FA403F6-5535-40A4-9FD0-ADB9913EDE83
DOI	https://doi.org/10.5281/zenodo.5191731
persistent identifier	https://treatment.plazi.org/id/03A287F6-FFDD-FFF9-0548-8011FE04FA51
treatment provided by	Felipe
scientific name	Stegana (Oxyphortica) maichouensis Sidorenko
status

Treatment

Stegana (Oxyphortica) maichouensis Sidorenko View in CoL

(Figures 2(e), 4(a), 5(f) and 7)

Stegana (Oxyphortica) maichouensis Sidorenko, 1998: 289 View in CoL .

Diagnosis

Surstylus with two long prensisetae (one each basally and apically) ( Figure 7 View Figure 7 (a, b)); gonopods with three strongly sclerotized, suberect processes dorsoapically, the median bifurcate ( Figure 7 View Figure 7 (e)). The 8.4% interspecific genetic distance to S. (O). triodonta sp. nov. is one of the smallest interspecific distances ascertained within this subgenus; see under that species.

Description

Clypeus brown. Palpus yellow. Mesoscutum yellow anteromedially, yellowish brown laterally and posteriorly ( Figure 4 View Figure 4 (a)). Scutellum yellowish brown, yellow at tip ( Figure 4 View 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 View 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

Wing

(

same

male

and

female

)

(

)

Stegana

(

Oxyphortica

)

acutipenis

Gao

and

Chen

2007

;

(

)

(

)

adentata

Toda

and

Peng

1992

;

(

)

(

)

hirtipenis

Gao

and

Chen

2007

;

(

)

(

)

latipenis

Gao

and

Chen

2007

;

(

)

(

)

maichouensis

Sidorenko

1998

;

(

)

(

)

chuanjiangi

Zhang

and

Chen

nov

;

(

)

(

)

dainuo

Wang

and

Chen

nov

;

(

)

(

)

dawa

Zhang

and

Chen

nov

dense

pubescence

and

setae

(

Figure

(

))

Cercus

lacking

pubescence

(

Figure

(

))

Surstylus

small

lobe-shaped

with

several

small

setae

distally

(

Figure

(

))

Parameres

absent

(

Figure

(

))

Aedeagus

strongly

broadened

mediolaterally

and

sclerotized

except

peristome

haired

along

peristome

(

Figure

(

))

Measurements

2.67

–

2.93

males

2.83

–

3.53

females

ThL

1.30

–

1.47

males

1.20

–

1.57

females

2.10

–

2.30

males

2.07

–

2.60

females

0.97

–

1.07

males

0.93

–

1.20

females

arb

–

avd

0.67

–

0.87

adf

2.60

–

3.25

2.00

–

2.80

0.36

–

0.47

0.09

–

0.13

prorb

0.95

–

Specimens examined

China: nine males, two females ( SCAU, Nos. 121460–70), Menglun, Mengla , Yunnan, 21°41 ʹ N, 101°25 ʹ 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 ʹ 29 ʹ ’N, 101°22 ʹ 59 ʹ ’E, altitude 990 m, 6–7 August 2016, ex tree trunks and tussock, HW Chen, L Gong, YQ Liu GoogleMaps .

Distribution

China (Yunnan); Vietnam.