Ariptyelus arisanus ( Matsumura, 1942 )

Shih, Hsien-Tzung & Yang, Jeng-Tze, 2007, Revision of the genus Ariptyelus Matsumura (Hemiptera: Cercopoidea: Aphrophoridae), Zootaxa 1592, pp. 57-68 : 60-62

Ariptyelus arisanus ( Matsumura, 1942)

( Figs. 1 A, 1B, 2A, 2B, 3)

Toroptyelus arisanus Matsumura, 1942 , Ins. Matsum. 16: 91–92.

Ariptyelus arisanus ( Matsumura, 1942) [transferred by Liang, 1998: 252]. Type depository: EIHU ( Komatsu and Hayashi, 1998).

Type locality: TAIWAN: Arisan [Alishan], Chiayi Co. ( Matsumura, 1942; Komatsu and Hayashi, 1998).

Coloration: Eyes yellowish brown, with brown marks; antenna brown; vertex yellowish brown, dark brown centrally, median carina dark brown. Frons in dorsal view dark brown, median carina yellow; frons in ventral view with basal part brown, apical part dark brown, transverse band not recognizable; genae and base of mouth parts dark brown. Pronotum with anterior half yellowish brown, posterior half dark brown. Mesoscutellum yellowish brown. Tegmen ( Fig. 1 A) light brown, apical half with dark brown marks irregularly distributed, transverse band at middle dark brown, darker on costal margin and lighter on cubital area. Hind leg dark brown.

Structure: Head width: body width: body length= 1:1.4:2.8. Head in ventral view rhomboid, about 1.4 times wider than median length; about 3.4 times wider at base than median length from dorsal aspect. Pronotum wider than median length at widest part about 1.6:1. Tegmen ( Fig. 1 A) subquadrate, anal margin: posterior margin: length of tegmen = 1:2.1:4; LBW: LMW: LT= 1:2.2:3.1. Wings ( Fig. 1 B) with 4 apical cells, apical cells with first one longer than third 1.7:1. Wing coupling apparatus (WCA) with 3 hooks on basal part of costal margin ( Fig. 1 B). Hind tibia with apical spines arranged in 2 rows, upper row with 7 spines, lower one with 8 spines.

Male Genitalia: Pygofer subquadrate in lateral view ( Fig. 3 A), wider than long about 1.2:1; basal margin of pygofer smoothly curved inward; dorsal process of pygofer conelike in lateral view, directed ventrally; ventral process of pygofer in lateral view, shorter than ventral length of pygofer about 1:3.7; ventral process at widest part narrower than basal wide of pygofer about 1:5.3. Pygofer subquadrate in ventral view ( Fig. 3 B); posterior part produced, platelike, not bilobed, transverse long, apical margin with minute notch at middle. Aedeagus elongate ( Fig. 3 E). Genital styles ( Figs. 3 C, 3D) with width of apical part about 1.2 times length (WAGS: LAGS= 1.2:1) on outer side, margin prominent on caudal margin of inner side.

Measurements: See Table 2 .

CV% = (SD/ Mean) x 100% Type specimen examined: Holotype of Toroptyelus arisanus Matsumura, 1942 , Male: [Mt. Arisan], 18 V. 0 7, [(T.) Kano]; Type Matsumura; Torotyelus arisanus (EIHU).

Specimens examined: TAIWAN, 3 males, 5 females, Keelung, X, [19]57, K. S. Lin (TARI); 1 female, Taichung, Hoping, X, 1987, I. C. Hsu (NMNS-ENT); 28 males, 12 females, Nantou, Ki-Tou, 1150m, 13, X, 1957, K. S. Lin (TARI); 1 female, Nantou, Sunlinksea, 20, VII, 1988, M. L. Chan (ENCHU); 42 males, 24 females, Nantou, Tungpu, 1200m, 1978–1985, Malaise trap (TARI); 1 male, 4 females, Chiai, Arisan, 10, X, 1912, I. Nitobe (TARI); 2 males, Chiai, Fenchifu, 5, XI, 1997, C. S. Lin & W. T. Yang (NMNS-ENT); 7 males, 3 females, Kaoshiung, Tengchih, 1989–1990, C. C. Chiang (NMNS-ENT); 1 female, Kaoshiung, Shanping, 6, IX, 1989, C. C. Chiang (NMNS-ENT); 3 males, 1 female, Kaoshiung, Shihshan forest road, 27– 29 km, 20, XI, 2002, W. T. Yang (NMNS-ENT); 2 females, Kaohsiung, Maolin, Tona forest road 16– 7 km, IV, 29, 1998, W. T. Yang (NMNS-ENT); 1 female, Pingtung, Taiwu, 16, VIII, 1991, W. T. Yang (NMNS-ENT); 4 males, 10 females, Pingtung, Kenting, 5–9, XII, 1982, S. C. Lin & S. P. Huang (TARI); 2 females, Pingtung, Nanjenshan, 18, VI, 1996, H. T. Shih (TARI); 1 female, Raisha, Formosa, 18. V. 1941 (TARI).

Distribution: Taiwan.

Remarks: This species is known only from Taiwan. It is a common species and widespread all over Taiwan in habitats including shady and humid localities from lowland to upland. It can be distinguished easily from the other two Ariptyelus species by its size.

Figures

FIGURE 1. Tegmen and wing: A, Ariptyelus arisanus, tegmen; B, A. arisanus, wing; C, A. auropilosus, tegmen; D, A. auropilosus, wing; ap, apical cell; AM, anal margin; BW, basal widest point; LBW, length from base to basal widest point; LMW, length from basal point to middle widest point; LT, length of tegmen; MW, middle widest point; PM, posterior margin; WCA, wing coupling apparatus.

FIGURE 3. Ariptyelus arisanus (Matsumura, 1942): A, Male genitalia, lateral view; B, pygofer, ventral view; C, left genital style, outer lateral side; D, the same, inner lateral side; E, aedeagus, phallobase, and connective, lateral view; aed, aedeagus; bmp, basal margin of pygofer in lateral view; con, connective; dp, dorsal process of pygofer; gs, genital styles; IX – XI, abdominal segments IX – XI; LAGS, length of genital style; LBWP, the length of basal wide of pygofer; LP, length of pygofer; LPML, length of pygofer in middle line; LVP, length of vp in lateral view; LVVP, length of vp in ventral view; LWVP, length of the widest part of vp in lateral view; LVMP, length of ventral margin of pygofer; phb, phallobase; vp, ventral process of pygofer; WAGS, width of apical part of genital style; XIt, abdominal tergite XI; XIs, abdominal sternite XI; WP, wide of pygofer.

Tables

TABLE 2. Measurements of body length and body width of Ariptyelus arisanus, A. auropilosus, and A. subauropilosus sp. nov.

Species	Sex	Sample size Body length (mm)	Body width (mm)
		Mean S.D. / CV%	Mean S.D. / CV%
A. arisanus	Male	32 5.770.20 / 3.47%	2.760.17 / 6.16%
	Female	47 6.060.24 / 3.96%	2.850.10 / 3.51%
A. auropilosus	Male	66 6.730.28 / 4.16%	2.910.15 / 5.15%
	Female	96 7.050.20 / 2.84%	2.980.0 9 / 3.02%
A. subauropilosus sp. nov.	Male	5 6.910.16 / 2.32%	3.050.12 / 3.93%
	Female	6 7.110.17 / 2.39%	3.040.0 6 / 1.97%