Doryscus varians (Gressitt & Kimoto, 1963)

(Figs 4 D–4F, 8)

Trichobalya varians Gressitt & Kimoto, 1963: 374; Gressitt & Kimoto, 1965: 802 (as synonym of Doryscus testaceus). Doryscus testaceus: Kimoto, 1989: 196 . Misidentification

Doryscus varians: Kimoto, 1991: 119 (recurred from synonym); Beenen, 2010: 474 (as synonym of Doryscus testaceus). Doryscus nigricollis Jiang, 1992: 649 . New synonym

Doryscus marginicollis Jiang, 1992: 649 . New synonym

Types (n= 3). Doryscus nigricollis . The holotype was supposed to be deposited at the IZAS but was not found there (Rui-E Nie, personal communication, September 6, 2016). Based on the sudy of a large series of specimens from Yunnan D. nigricollis proved to be a color form of D. varians .

Doryscus marginicollis . Holotype ♂ (IZAS), labeled: “ ṮĦ [p] ŠOEƦ 济 ṃ [h] (= Yunnan Weixi Baijixun) / 2250m [h] / ϕÑṆḤK (= Academia Sinica, China) [p, w] // 1981. VI.13. [h] / ※Dzff: [p] ṈẼÜ (= Collector: Liao Su-Bo) [h, w] // Doryscus / marginicollis / sp. n. [h] / ǍṪff: [p] ṘṞṊ (= det. Jiang Sheng-Qiao) [p, w] // HOLOTYPE [p, r]”.

Trichobalya varians . Holotype ♀ (BPBM), labeled: “FUKIEN, S. CHINA / Chungan: Bohea / Hills T. c. Maa [p, w] // Bohea Hills / 30.IV.1940 [h, w] // F. 7550 [h, w] // Trichobalya / varianas / G & K [h] / J. L. Gressitt det. [p, w] // HOLOTYPE [p] ♀ / Trichobalya / varians [h] / Gressitt & Kimoto [p, r]. Paratype: 1♀ (BPBM), labeled: “Nanking China [p] / V.3 [h] -1923 [p, w] // EC Van Dyke / Collector [p, w] // Van Dyke / Collection [p, w] // PARATYPE [p] / Trichobalya / varians [h] / Gressitt & Kimoto [p, y].

Additional specimens (n= 202). CHINA. Yunnan: 1♂ (TARI), Bangdashan (fflaeƜ), 4.IX.2015, leg. Y.- T. Chung; 1 ♁ (NHMB), Jizushan, 25°58’N 100°21’E, 2500–2700 m, 6–10.VII.1994, leg. V. Kubáň ; 1 ♁, 9 ¥¥ (TARI), Ruili (* 丽), 5–13.IX.2014, leg. Y.- T. Wang; 1 ¥ (SEHU), Simao, 8.V.1982, leg. M. Takakuwa ; 1 ¥ (SEHU), Sishuangpanna (= Xishuangbanna), Ertapi, 7.V.1982, leg. M. Takakuwa ; 1 ¥, (NME), Xishuangbanna, 23km NW Jinghong, vic. Na Ban (NNNR),, 22°09’49”N 100°39’92”E, 730m, 12.V.2008, leg. A. Weigel ; 2 ♁♁, 2 ¥¥ (NHMB), Yipinglang, 25°05’N 101°53’E, 1800 m, 8–10.VI.1993, Bolm; 5 ♁♁, 2 ¥¥ (NHMB), same locality, 8–10.VI.1993, leg. V. Kubáň; 2♂♂ , 2♀♀ (NHMB), same locality, 17–20.VI.1994, leg. V. Kubáň; INDIA. 1♂ (BMNH), Nilgiri Hills, 94-89, leg. G. F. Hampson; LAOS. Houa Phan Prov.: 25♂♂ , 49♀♀ (NHMB), Ban Saleui + Phou Pane Mt., 20°12–13.5’N 103°59.5’– 104°01’E, 1340–1870 m, 15.IV.–15.V.2008, leg. Lao collectors ; 1♂ (NHMB), same locality, 10.V.–16.VI.2009, leg. M. Brancucci & local collectors; 1♂, 1♀ (NHMB), same locality, 9–17.VI.2009, leg. M. Geiser; 1♂ (EUMJ), Ban Saleui, Xam Neua, 28–30.III.2005, leg. J. Yamasako ; 1♂, 1♀ (EUMJ), same but with “ 30–31.III.2005 ”; 1♀ (EUMJ), same but with “ 27.IV.–11.V.2007 ”; 1♀ (NME), same locality, 11.IV.–15.V.2012, leg. C. Holzschuh; 3♀♀ (NHMB), Phu Phan Mt., 20°12’N 104°01’E, 1500–1900 m, 17.V.–3.VI.2007, leg. M. Brancucci ; 3♂♂, 2♀♀ (NHMB), same locality, 17.V.–3.VI.2007, leg. V. Kubáň; 1♂, 2♀♀ (NHMB), same locality, 1–16.VI.2009, leg. Z. Kraus; Louang Namtha Prov.: 4♂♂, 4♀♀ (NHMB), Namtha + Muang Sing, 21°09’N 101°19’E, 900–1200 m, 5–31.V.1997, leg. V. Kubáň ; 1♂, 4♀♀ (NHMB), Muang Sing town, 21°11’N 101°09’E, 14–20.V.2011, leg. M. Geiser & D. Hauck ; Louang Prabang Prov.: 4♀♀ (NHMB), Ban Song Cha (5 km W), 20°33–4’N 102°14’E, 1200 m, 1–16.V.1999, leg. V. Kubáň ; 5♀♀ (NHMB), 25 km E Muang Ngoy, 20°42’N 102°54’E, 1000 m, 23.IV.1999, leg. V. Kubáň ; Phongsaly Prov.: 2♀♀ (NHMB), Phongsaly env., 21°41’N 102°06–8’E, 1500 m, 6–17.V.2004, leg. V. Kubáň; Xieng Khouang Prov.: 1♂, 1♀ (NHMB), 30 km NE Phonsavan: Ban Na Lam + Phou Sane Mt., 19°37–8’N 103°20–1’E, 1300–1700 m, 10–30.V.2009, leg. M. Geiser ; THAILAND. Chiang Mai Prov.: 1♀ (BPBM), Chiangmai, 1500 m, 11–12.IV.1966, leg. J. Sedlacek ; 2♀♀ (NHMB), Doi Chiang Dao, 1200± 500 m, 19°24’N 98°51’E, 9–13.V.2009, leg. L. Dembický ; 1♀ (NHMB), same locality, 9–14.V.1991, leg. D Král; 1♀ (NHMH), same locality, 10–16.V.1991, leg. V. Kubáň; 1♂, 1♀ (SEHU), Doi Pui, 5.V.1983, leg. M. Takakuwa ; 2♂♂ (SEHU), same locality, 23.V.1983, leg. K. Ikeda; 2♂♂, 1♀ (SEHU), same locality, 3.V.1984, leg. M. Takakuwa; 1♂ (SEHU), same locality, 3.V.1984, leg. H. Akiyama; 1♂ (SEHU), Doi Suthep, 7.IV.1981, leg. M. Ito ; 1♂ (SEHU), same locality, 31.V.1983, leg. Y. Komiya; 1♂ (NHMB), same locality, 19–22.IV.1991, leg. S. Bily; 1♂, 2♀♀ (NHMB), Doi Suthep to Doi Pui, 18°49’N 99°00’E, 19–23.IV.1991, leg. L. Dembický ; 2♂♂, (SEHU), Meo Village, 26–28.IV.1980, leg. S. Tsuyuki ; 1♂, 1♀ (SEHU), same locality, 4.V.1980, leg. A. Yasuda; 2♂♂, 1♀ (SEHU), same locality, 6.IV.1981, leg. M. Ito; 1♂, 1♀ (SEHU), same locality, 29.IV.1982, leg. M. Ito; 3♂♂, 3♀♀ (NHMB), Pha Hom Pok Mt., 1900–2200 m, 20°02’N 99°08’E, 23–30.IV.2009, leg. L. Dembický ; 1♀ (SEHU), Phuping Palace, 28.V.1983, leg. S. Ohmomo ; Chiang Rai Prov.: 1♂, 1♀ (NHMB), 7 km S of Doi Chang, 1600± 50 m, 19°48’N 99°34’E, 16–18.V.2009, leg. L. Dembický ; 1♂, (NHMB), Mae Hong Son, Ban Huai Po, 1600 m, 9–16.V.1991, leg. J. Horák ; 1♂ (UACB), 1♀ (RBCN), same locality, 1–5.V.1992, leg. S. Jan; 3♂♂, 2♀♀ (NHMB), same locality, 8–17.V.1992, leg. S. Bily; 2♂♂, 3♀♀ (NHMB), Soppong-Pai, 1800 m, 1–6.V.1991, leg. Pacholátko ; VIETNAM. 2♂♂, 1♀ (BPBM), Dalat 6km S., 1400–1500 m, 9.VI.–7.VII.1961, leg. N. R. Spencer ; 1♀ (BPBM), Mt. Lang Bian, 1500–2000 m, 19.V.–8.VI.1961, leg. N. R. Spencer .

Redescription. Length 3.7–4.8 mm, width 1.6–1.9 mm. General color yellow; lateral margins of pronotum, suture and lateral margin of elytra, and outer margins of tibiae black, metasternum dark brown (Fig. 4 D); abdomen blackish brown in some individuals; some individuals with black elytra but usually yellow apically, and metasternum yellowish brown (Fig. 4 E); some specimens with dark lateral margins and dark suture of elytra reduced (Fig. 4 F). First antennomere not modified in males (Fig. 8 A), length ratios of antennomeres I–XI 1.0: 0.5: 0.7: 0.9: 0.9: 0.8: 0.8: 0.8: 0.8: 0.7: 0.9, length to width ratios of antennomeres I–XI 3.2: 2.1: 3.3: 3.7: 3.7: 3.5: 3.6: 3.5: 3.6: 3.3: 4.2; first antennomere more slender in female (Fig. 8 B), length ratios of antennomeres I– XI 1.0: 0.4: 0.6: 0.8: 0.8: 0.8: 0.8: 0.8: 0.8: 0.8: 0.9, length to width ratios of antennomeres I–XI 3.8: 2.0: 3.1: 3.9: 3.9: 3.7: 3.8: 3.6: 3.4: 3.2: 4.3. Elytra 1.7 x longer than wide; surface with erect setae pale, sparse, and short setae; and fine punctures. Apical margin of last abdominal ventrite with two well developed incisions in male (Fig. 8 G); medially depressed in females (Fig. 8 H). Penis (Figs 8 C–8D) slender, 6.4 x longer than wide, gradually narrowed towards apex; apex of dorsal surface with extremely deep median notch, in some male with notch shorter and a transverse groove present at apical 1/10; apex of ventral surface widely rounded; weakly curved in lateral view, apex with extremely narrow notch between dorsal and ventral surfaces; ventral surface smooth. Internal sac without setae; endophallic spiculae elongate, about 0.7 x as long as penis, median spicula short, apically tapering, ventrally curved in lateral view; lateral spiculae with inner margins covered with tiny spines, basally conjoined; two pairs of dorsal endophallic spiculae with different shapes, one pair short and horn-like, ventrally covered, the second pair slender, curved near apex; three pairs of lateral endophallic spiculae horn-like, located from basal 1/3 to 1/2; one pair of ventral endophallic spiculae long, separated, apices bifurcate. Gonocoxae (Fig. 8 E) elongate, 6.9 x longer than wide, sides narrowed at apical 1/10 and 3/10; apices narrow rounded; inner margins closely approximate from apex to half, apex with eight or nine setae; extremely slender from midpoint to base but abruptly widened at base. Ventrite VIII (Fig. 8 F) well sclerotized; spiculum long; apex square, apical margin truncate, with several short setae; disc with three long setae at sides. Receptacle of spermatheca (Fig. 8 I) weakly swollen and narrow, narrowly separated from pump; pump extremely slender and curved, apically tapering; proximal spermathecal duct wider than receptacle, shallowly projecting into receptaculum.

Differential diagnosis. Doryscus varians (Gressitt & Kimoto) adults are distinct within the genus in possessing sparse, short, erect setae on the elytra.

Remarks. Vietnamese specimens deposited at BPBM and identified by Kimoto (1989) were available for study, they belong to this species.

Distribution. China (Yunnan, Fujian), India, Laos, Thailand, Vietnam.