Review of the genus Helcystogramma Zeller (Lepidoptera: Gelechiidae: Dichomeridinae) from China
Li, H. H.
Zhen, H.
Journal of Natural History
2011
2011-04-19
45
17 - 18
1035
1087
93HZ3
Li & Zhen, 2011
Li & Zhen
2011
[414,745,582,607]
Insecta
Gelechiidae
Helcystogramma
Animalia
Lepidoptera
48
1082
Arthropoda
species
rectangulum
sp. nov.
( Figures 4C, 9H, 10Q, 13F, 15F) Holotype Male, CHINA: Shaanxi Province: Ningshan( 33 ◦19 ′N, 108 ◦20 ′E), 880 m, 11 August 1987, coll. Houhun Li, genitalia slide no. L95025. Paratypes
CHINA: Shaanxi Province: 1 male, 1 female, same data as for holotype; 1 male, 6 July 1990, coll. Jinfu Li, same location and altitude as for holotype; Guizhou Province: 2 females, Guocun, Daozhen( 28 ◦53 ′N, 107 ◦36 ′E), 1300 m, 20 August 2004, coll. Yunli Xiao; 2 males, 3 females, Dashahe, Daozhen( 28 ◦53 ′N, 107 ◦36 ′E), 1370 m, 24–25 August 2004, coll. Yunli Xiao; 1 male, 1350 m, 25 May 2004, coll. Shulian Hao; Hunan Province: 4 males, Mt Badagong, Sangzhi( 29 ◦23 ′N, 110 ◦11 ′E), 1250 m, 13 August 2001, coll. Houhun Liand Xinpu Wang; Sichuan Province: 3 males, 2 females, Fengtongzhai, Baoxing( 30 ◦22 ′N, 102 ◦50 ′E), 1600 m, 2–3 August 2004, coll. Yingdang Ren; 1 female, Wolong( 30 ◦59 ′N, 103 ◦08 ′E), 1900 m, 9 August 2004, coll. Yingdang Ren; 4 males, Mt Qingcheng( 30 ◦58 ′N, 103 ◦31 ′E), 10, 26 July 1980( IZCAS). Diagnosis Helcystogramma rectangulum sp. nov.resembles H. trijunctum(Meyrick), but differs from it in the greyish-brown to yellowish-brown forewing; the lobes of vinculum with inner margin protruding, forming a right angle mesially, and the aedeagus slightly dilated distally in the male genitalia. Description Adult ( Figures 4C, 9H). Wingspan 13.0–17.0 mm. Head greyish-brown, with coppercoloured metallic lustre. Antenna with scape greyish-brown to dark brown on dorsal surface, yellowish-white on ventral surface; flagellum alternately greyish-yellow and dark brown on dorsal surface, yellow on ventral surface. Labial palpus dorsally with long scales on distal two-thirds of second segment and on middle of third segment; second segment about twice length of diameter of eye, third segment about three-fifths length of second; brown to dark brown, tinged with pale yellow on ventral surface, and greyish-white on inner surface, third segment yellow apically. Thorax and tegula greyish-brown to brown, with copper-coloured metallic lustre; without hair pencil from anepisternum on mesothorax. Forewing with costal margin almost straight, termen truncate; ground colour greyish-brown to brown, scattered dark brown scales becoming denser distally, termen dark brown; black scale tufts at middle and end of cell as well as at middle of fold, the last one largest; narrow yellowish-brown fascia from costal six-sevenths length to before tornus, arched outward, sometimes faint; fringe greyish-brown except greyish-white basally. Hindwing and fringe grey. Fore- and midlegs greyish-brown on outer surface, yellowish-white on inner surface; hindleg with femur, distal two-fifths of tibia and tarsus greyish-brown, basal three-fifths of tibia and apex of tarsomeres yellowish-white on outer surface, femur greyish-white, tibia and tarsus yellowish-white on inner surface. Abdomen dark brown on dorsal surface, greyish-yellow to greyish-brown on ventral surface. Male genitalia Uncus with a small triangular process on posterior margin, median width about threefifths of basal width; about one-quarter length of valva ( Figure 13F). Gnathos short, narrowed from base to rounded apex, slightly shorter than one-quarter length of valva; culcitula semioval. Valva with dorsal and ventral margins almost parallel, bluntly rounded at apex, longer than tegumen–uncus complex; ventral free lobe slightly arched, with sparse long setae. Vinculum with lobes projecting on inner margin, forming a right angle mesially, distal two-fifths abruptly narrowed. Saccus bluntly rounded anteriorly. Aedeagus with basal two-fifths dilated and slightly rounded, then narrowed gradually, slightly dilated apically. Eighth tergite nearly inverted trapeziform, rounded posteriorly ( Figure 10Q). Female genitalia Anterior apophyses about one-third length of posterior apophyses ( Figure 15F). Antrum nearly rectangular, slightly sclerotized. Ductus bursae about twice length of anterior apophyses; basal two-fifths narrow, membranous; distal three-fifths sclerotized, broadened toward corpus bursae. Corpus bursae oval; accessory bursa arising from anterior margin. Distribution China( Guizhou, Hunan, Shaanxi, Sichuan). Etymology The specific name is derived from the Latin rectangulus, meaning right-angled, referring to the vinculum with inner margin projecting and forming a right angle mesially.
L95025
1987-08-11
Houhun Li
China
880
33.316666
Ningshan
1205
108.333336
Male
48
1082
1
Shaanxi
holotype
L95025
[144,940,885,909]
1987-08-11
Houhun Li
China
880
33.316666
Ningshan
1205
108.333336
Male
48
1082
2
1
1
Shaanxi
paratype
L95025
[380,874,917,941]
1987-08-11
Houhun Li
China
880
33.316666
Ningshan
1205
108.333336
Male
48
1082
1
Shaanxi Province
holotype
2004-08-20
Yunli Xiao
China
1300
28.883333
Daozhen
1230
107.6
Guocun
48
1082
2
2
Guizhou
paratype
2004-08-24
2004-08-25
2004-08-24
Yunli Xiao
China
1370
28.883333
Daozhen
1230
107.6
Dashahe
48
1082
5
3
2
Guizhou Province
paratype
2001-08-13
Houhun Li & Xinpu Wang
China
1250
29.383333
Sangzhi
1227
110.183334
Mt Badagong
48
1082
4
4
Hunan
paratype
2004-08-02
2004-08-03
2004-08-02
Yingdang Ren
China
1600
30.366667
Baoxing
1222
102.833336
Fengtongzhai
48
1082
5
2
3
Sichuan
paratype
2004-08-09
Yingdang Ren
China
1900
30.983334
Wolong
1218
103.13333
48
1082
1
1
Sichuan Province
paratype
1980-07-26
IZCAS
China
30.966667
Mt Qingcheng
1218
103.51667
48
1082
4
4
Sichuan Province
paratype
[213,712,1465,1489]
China
Guizhou
49
1083
1
Guizhou