Pseudostegana minutipalpata, Li & Gao & Chen, 2010

Li, Tong, Gao, Jianjun & Chen, Hongwei, 2010, Six new species of the genus Pseudostegana (Diptera: Drosophilidae) from the Oriental region, Journal of Natural History 44 (23 - 24), pp. 1401-1418 : 1412-1414

publication ID

https://doi.org/ 10.1080/00222931003679584

persistent identifier

https://treatment.plazi.org/id/03D55018-3765-FF84-FE75-65F838030555

treatment provided by

Felipe

scientific name

Pseudostegana minutipalpata
status

sp. nov.

Pseudostegana minutipalpata View in CoL sp. nov.

( Figures 1G,H View Figure 1 ; 2D View Figure 2 ; 6 View Figure 6 )

Diagnosis

Paramere subapically strongly sclerotized, acute projection ( Figure 6D,E View Figure 6 ); aedeagus apically slightly expanded to hammer-shape in lateral view, with lobe-shaped basal processes ( Figure 6D,E View Figure 6 ).

Description

Only important characters are described here.

Head. Ocellar triangle and frons brown. Pedicel yellow; first flagellomere black. Face, clypeus, gena brown. Palpus brown and slender, rod-shaped in male.

Thorax. Scutum yellow on anterior one-third, brown to black on posterior twothirds. Pleura brown on upper part, black on lower part, slender, rod-shaped in male. Katepisternal setae two. Scutellum brown.

Legs. Yellow, black on all knee joints.

Abdomen. Tergites mostly brownish black. Sternites greyish yellow. Male terminalia. Epandrium roundly protruded on ventral margin, with about 18 setae ( Figure 6A View Figure 6 ). Surstylus protruded on posteroventral corner ( Figure 6A,B View Figure 6 ). Cercus ventrally round in lateral view ( Figure 6A View Figure 6 ), dorsally elongated in posterior view ( Figure 6C View Figure 6 ). Paramere with expanded lobe bearing two long sensilla subapically and several sensilla on dorsomedial projection ( Figure 6D,E View Figure 6 ).

Measurements

BL = 2.98 mm in holotype (3.00 mm in one female paratype), ThL = 1.24 mm (1.46 mm), WL = 2.88 mm (3.40 mm), WW = 1.04 mm (1.28 mm), arb = 8/2(7/2), avd = 0.86 (0.93), adf = 2.33 (2.14), flw = 1.83(1.71), FW/HW = 0.42 (0.42), ch/ o = 0.07 (0.05), prorb = 0.93 (0.94), rcorb = 0.13 (0.19), vb = 0.55 (0.57), dcl = 0.27 (0.35), sctl = 1.09 (1.08), sterno = 0.52 (0.58), orbito = 0.50 (0.50), dcp = 0.12 (0.14), sctlp = 1.00 (1.00), C = 2.06 (2.10), 4c = 1.75 (1.52), 4v = 3.20 (3.08), 5x = 1.00 (1.07), ac = 17.50 (12.67), M = 0.60 (0.60), C3F = 0.78 (0.79).

Type material

Holotype male ( SCAU No. 120555), China: Mengla, Xishuangbanna , Yunnan, 21°28′ N, 101°38′ E, altitude 570 m, 21 April 2007, swept over fallen logs, J.J. Gao. GoogleMaps

Etymology

A combination of the Latin words: minutus plus palpus, referring to the small palpus.

Distribution

China (Yunnan).

The zonaria species group

Diagnosis

Wing. Medial band as broad as length of dm-cu cross-vein at least; r-m cross-vein clear; M vein gently curved to R 4+5 vein after dm-cu cross-vein ( Figure 2E,F View Figure 2 ).

Included species

Pseudostegana dolichopoda Chen and Wang 2005 View in CoL from China, Pseudostegana latifasciata Chen and Toda 2005 View in CoL from Vietanam, Pseudostegana latipalpis ( Sidorenko 1998) View in CoL from China, Pseudostegana nitidifrons Chen and Wang 2005 View in CoL from China, Pseudostegana zonaria ( Okada 1982) View in CoL from Papua New Guinea, Pseudostegana insularis View in CoL sp. nov. and Pseudostegana silvana View in CoL sp. nov. from China.

Key to species of the zonaria group

1. Palpus expanded, medially wider than one-third of length.............. 2 Palpus slender, rod-like......................................... 6

2. Medial band as broad as length of dm-cu cross-vein........... P. zonaria Medial View in CoL band broader than length of dm-cu cross-vein................. 3

3. Paramere apically bifurcated....................... P. insularis View in CoL sp. nov. Paramere apically not bifurcated.................................. 4

4. Paramere apically smoothly tapering; aedeagus apically slightly pointed..................................................... P. dolichopoda Paramere View in CoL subapically somewhat expanded; aedeagus apically slightly roundly expanded............................................. 5

5. Aedeagus strongly narrowed on distal one-third........ P. silvana View in CoL sp. nov. Aedeagus smoothly narrowed on distal half................. P. latipalpis View in CoL

6. Paramere subapically expanded in ventrally, with one triangular process on distal one-third; aedeagus apically slightly pointed in ventral view.......................................................... P. latifasciata Paramere View in CoL subapically not expanded, lacking process distally; aedeagus apically roundly expanded in ventral view.................... P. nitidifrons View in CoL

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Drosophilidae

Genus

Pseudostegana

Loc

Pseudostegana minutipalpata

Li, Tong, Gao, Jianjun & Chen, Hongwei 2010
2010
Loc

Pseudostegana insularis

Li & Gao & Chen 2010
2010
Loc

Pseudostegana silvana

Li & Gao & Chen 2010
2010
Loc

Pseudostegana dolichopoda

Chen and Wang 2005
2005
Loc

Pseudostegana latifasciata

Chen and Toda 2005
2005
Loc

Pseudostegana nitidifrons

Chen and Wang 2005
2005
Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF