Xenomerus yamagishii Mikó & Masner, 2010

Mikó, I., Masner, L. & Deans, A. R., 2010, World revision of Xenomerus Walker (Hymenoptera: Platygastroidea, Platygastridae) 2708, Zootaxa 2708, pp. 1-73 : 49-51

Xenomerus yamagishii Mikó & Masner , new species

Figures 46, 47

FEMALE (HT): Length= 0.89 mm.

Yellowish-brown (ochre); A3–A2, T3 posteriorly and T4–T6 entirely dark brown; FCI =1.14; LCI =1.73; HW/IOS =1.58; head less than 1.5 times as wide as mesosoma (HW/TSL = 1.3); facial striae not exceeding midlevel of eye; frontal patch distinct; frons setae dense, setae thin; central keel complete; toruli triangle shorter than clypeus height; POL almost as long as OOL (POL/OOL =1.15); OOL more than 1.5 times as long as LOL (OOL/LOL =1.62); hyperoccipital carina absent; vertex patch present, with diameter equal to lateral ocellus; vertex setae denser behind POL area; genal patch absent; A1 more than 5 times as long as radicle (A1/r =5.37), as long as clava (A1/cl =1.07).

Epomial carina absent; cervical pronotal area smooth, with scattered setae along lateral and dorsal margin; lateral pronotal area near epomial carina reticulate, with scattered setae, ventrolaterally smooth; netrion sulcus incomplete; pronotal suprahumeral sulcus diminishing medially, foveolate; pronotal cervical sulcus not foveolate; anterior tip of pronotum reduced; mesoscutum more than 1.5 times as wide as long (TSL/ ML =1.82); notaulus absent; mesoscutum with dense setae; mesoscutum sculpture extending to posterior margin; mesoscutellum 2 times as wide as long (SW/SL =2.02); scuto-scutellar sulcus slightly diminishing medially, 1.5 times as wide laterally as in the middle; mesoscutellum anteriorly punctate, with fine wrinkles between punctures, with dense setae; posterior scutellar sulcus extending onto axillula; sternaulus not separated from anterior row of foveae of mesopleural carina; distance between postacetabular sulcus and anterior row of foveae of mesopleural carina 2.5 times as long as foveae width of postacetabular sulcus; mesopleural carina complete, with complete rows of foveae, maximal distance between posterior row of foveae of mesopleural carina and mesepimeral sulcus 2 times as long as width of posterior row of foveae of mesopleural carina; sulcus along metapleural carina foveolate; metascutellum bluntly triangular, entirely striated; propodeal lateral carinae S- shaped; propodeal lateral area and plical area obscured by sparse setae, entirely striated; posterior propodeal projection distinct, tuberclelike; fore wing almost as wide as mesoscutum (TSL/WW =1.13); marginal vein more than 3 times as long as stigmal vein (m/st =3.1); hind wing less than 2 times as wide as marginal cilia length (HWW/HWS =1.76).

T1 about 1.5 times as wide as T1+T2 length (T1W/T1+T2L =1.57); T3 as wide as mesoscutum (T3W/ TSL =1.01); basal depressions thin; costae exceeding to middle of tergum; lateral patch indistinct; diameter of posterior patch of T3 nearly equal to width of one basal depression, indistinct; T3 with dense setae laterally; apical setae of T3 elongate, more than two times as long as lateral setae of tergum; lateral patch on T4 present, median patch absent.

Variability (n=11): Length= 0.86–1.05 mm (m=0.93, SD =0.07); sometimes mesoscutellum dark ochre; FCI =1.13–1.18 (m=1.16, SD =0.01); LCI =1.64–1.88 (m=1.73, SD =0.07); HW/IOS =1.56–1.75 (m=1.63, SD =0.05); HW/TSL =1.22–1.30 (m=1.28, SD =0.02); POL/OOL =1.00–1.15 (m=1.10, SD =0.04); OOL/ LOL =1.62–1.77 (m=1.68, SD =0.04); A1/r =5.87–6.42 (m=6.13, SD =0.16); A1/cl =1.06–1.16 (m=1.11, SD =0.03); TSL/ML =1.75–1.92 (m=1.84, SD =0.05); SW/SL =1.90–2.23 (m=2.05, SD =0.09; TSL/ WW =0.98–1.19 (m=1.09, SD =0.07); m/st =2.91–3.10 (m=2.28, SD =0.04); HWW/HWS =1.76–2.38 (m=2, SD =0.25); T1W/T1+T2L =1.5–1.75 (m=1.66, SD =0.09); T3W/TSL =1.00–1.09 (m=1.02, SD =0.03), sometimes T4 reticulate medially, smooth submedially.

MALE (n=5): length=0.93–1.11 (m=0.99, SD=0.07); A1–2 yellow to light brown, A3–A12 light brown to dark brown, metasoma mesonotum and vertex around ocelli brown; head wider (FCI =1.28–1.34, m=1.30, SD=0.02); LCI =1.56–1.65, m=1.61, SD=0.04); HW/IOS =1.50–1.60 (m=1.55, SD=0.03); HW/TSL =1.33– 1.44 (m=1.38, SD=0.04); OOL longer than POL (POL/OOL =0.83–0.95, m=0.86, SD=0.04) OOL/ LOL =2.11–2.33 (m=2.23, SD=0.08); A1/r =3.75–4.60 (m=4.28, SD=0.34); A5 modified; A7–A11 with two whorls of setae and weak ( Thailand) or strong ( Japan) constrictions in-between; flagellomeres with 5–6 ( Japan) or 10–12 ( Thailand) ventral microcilia; TSL/ML =1.66–1.85 (m=1.73, SD=0.07); notaulus present, almost exceeding TSL; SW/SL =2.00–2.25 (m=2.11, SD=0.11); TSL/WW =0.73–0.86 (m=0.82, SD=0.05); m/st =3.00–3.33 (m=3.20, SD=0.04); HWW/HWS =1.73–2.13 (m=1.89, SD=0.18); T1W/T1+T2L =1.15– 1.50 (m=1.34, SD=0.13); T3W/TSL =0.96–1.06 (m=1.00, SD=0.04).

Diagnosis. Most closely related to Xenomerus ochraceus , differing by the complete central keel, thin basal depressions on T3 and POL/OOL. Shared with Xenomerus guinensis the thin basal depressions and elongated costae on T3 extending to middle of tergum and differs by complete central keel and dense setae on frons.

Etymology. Named after Kenzo Yamagishi, who collected some of the type material of this species.

Material examined. Holotype female: JAPAN: Aichi Pref. Narai, Toyota 30.VII.–7.VIII.1990, K.Yamagishi, PT [ CNCI23943 ] . Paratypes: INDIA: Karnataka, Bangalore , ICAR XII.2003. J.Poorani MT, 1♀ . INDONESIA: Sulawesi Region, North Sulawesi Province (Sulawesi Utara) Domoga-Bone N.P. Toraut, 220m 9–16.V.1985. John S.Noyes, 2♀ [ BMNH], 1♀ ; Sulawesi Region, North Sulawesi Province (Sulawesi Utara), Dumoga-Bone National Park Toraut, 15–20.VI.1985. Wallace expedition, MT, forest edge, 1♀ ; Sumatra Region, Aceh Province, Gunung Leuser Natural Park, Ketambe Research Station , 3.6833,97.65, 350m, 1–30.X.1989, D.C.Darling, MT, 2♂ [ ROME], 4♂ ; Sumatra Region, Aceh Province, Gunung Leuser Natural Park, Ketambe Research Station , 3.6833,97.65, 350m, 400m, I.1990, D.C.Darling, MT, 1♂ ; Sumatra Region, Aceh Province, Gunung Leuser Natural Park, Ketambe Research Station , 3.6833, 97.65, 350m, 1– 28.II.1990. D.C.Darling, MT, 900013, 1♀ (IIS900011) [ ROME], 1♂ (IIS900013) ; Sumatra Region, Aceh Province, Gunung Leuser Natural Park, Ketambe Research Station , 3.6833, 97.65, 400m, III.1990, D.C.Darling, MT, 1♂ ; Kalimantan Region (Borneo) , West Kalimantan Province, Gunung Palung National Park , 15.VI–15.VIII.1991, C.D.Darling, Rosichon, Sutrisno, IIS910122, 1♀ [ ROME]. JAPAN: Aichi Prefecture, Douzuki, Obara , 15–22.VII.1990, K.Yamagishi, PT, 1♀, 1♂ ; Aichi Prefecture, Douzuki, Obara , 23–29.VIII.1990, K.Yamagishi, PT, 1♀ ; Aichi Pref. Douzuki, Obara , 6–12.IX.1990, K.Yamagishi, PT, 1♀ ; Aichi Prefecture, Narai, Toyota , 8–17.VIII.1990. K.Yamagishi, PT, 1♀ [ ZLMU], 1♂ [ ZLMU], 1♀, 1♂ ; Ibaraki Tsukuba , NIAES 14–25.VII.1989. M.Sharkey, PT, 1♂ . MALAYSIA (MALASIA): Sabah, Danum Valley Conservation Area , 18.XII.1986.– 18.I.1987, M.Still, 1♀ . SOUTH KOREA: Chungnam, Daejon-si, Wadong , 36.4003, 127.433, 16.VII–08.VIII.2006, P.Tripotin, MT, forest edge wilde rose patch, 1♂ . TAIWAN: Taitung Hsien, Hsinkangshan above Chengkung , 350m, 25–28.IV.1995. A.Smetana, (T163), 1♀ ; Taitung Hsien, Hsinkangshan above Chengkung , 800m, 26–28.IV.1995, A.Sematana, (T165), 1♀ . THAILAND: Chaiyaphum, Pa Hin Ngam NP, Thepana waterfall, 15648, 101.4306, 605m, 19–25.X.2006, K.Sa-nog, B.Adnafai, MT, dry evergreen forest (T667), 1♀ [ QSBG], 1♀ ; Chaiyaphum, Tat Tone NP, behind Sab Somboon forest unit, 16.0173, 101.9775, 675m, 5–12.XI.2006, T.Jaruphan, MT, forest mixed with tapioca (T1138), 1♀ [ QSBG]; Chiang Mai (Chang Kiang), Doi Suthep , 16.II.1985. D.Jackson, riv.gully, 1♂ [ BMNH], 1♂ ; Loei, Phu Kradueng NP, Pong neep forest unit, 16.9431, 101.7012, 273m, 21–28.X.2006, leg: S.Glonglasae MT, Dry evergreen forest (T786), 1♀ ; Loei Phu Province, Kradueng National Park , Loei Forest Unit 2, 16.9441, 101.815, 273m, 18–25.IX.2006, S.Glong-lasae, MT (T952), 1♀ [ QSBG]; Loei, Phu Kradueng NP , Loei forest unit 2 (E-lerd), 16.9441, 101.8150, 273m, 25.IX–2.X.2006, S.Glong-lasae, MT, Dry dipterocarp forest (T955), 1♂ ; Phetchabun, Nam Nao NP, Forest check point, 16.7282, 101.6532, 921m, 13–20.XI.2006, N.Hongyothi (T1020), 1♂ ; Phetchabun, Khao Kho NP, 16.5423, 101.0413, 524m, 11–12.XII.2006, S.Chachumnan, S.Singtong, YPT, mixed deciduous forest (T1177), 1♀ ; Phetchabun, Khao Kho NP, 16.5423, 101.0413, 524m, 5–12.XII.2006, S.Chachumnan, S.Singtong, YPT, mixed deciduous forest (T1179), 1♀ ; Phetchabun Province, Khao Kho National Park , 537m, 16.5426, 101.0413, 12–19.XII.2006, S.Chachumnan, S.Singtong, MT (T1183), 1♀ ; Phetchabun, Khao Kho NP, 16.6579, 101.135, 260m, 5–12.II.2007, S.Chachumnan, S.Singtong, MT, mix deciduous near office (T1600), 1♀ ; Phetchabun, Khao Kho NP, 16.6591, 101.1353, 230m, 26.II–5.III.2007, S.Chachumnan, S.Singtong, MT, mix deciduous near office (T1610), 1♀ ; Phetchabun, Thung Salaeng Luang NP, Gang Wang Nam Yen, 16. 6196, 100.8917, 706m, 17– 24.V.2007, P.Pranee, Sathit, MT, (T2081), 1♂ ; Petchaburi, Kaeng Krachan NP, Panernthung /km27/water pump, 12.8191, 99.3747, 950m, 04–11.VII.2008, Chusak, Sirichai, Arkom, MT, (T4337), 1♀ ; Petchaburi, Kaeng Krachan NP, Panernthung /km27/water pump, 12.8217, 99.3701, 4–11.XII.2008, Sirichai, MT, (T4399), 1♀ [ QSBG]; Phitsanulok, Thung Salaeng Luang NP, 16.844, 101.8815, 557m, 1–8.IX.2006, P.Pranee, MT, moist evergreen (T575), 1♂ ; Sakon Nakhon, Phu Phan NP, North of well, 17.59, 103.9828, 312m, 5–11.I.2007, S.Tongboonchai, MT (T1516), 1♀ ; Sakon Nakhon, Phu Phan NP, North of well, 17.59, 103.9828, 312m, 23–30.I.2007, S.Tongboonchai, MT (T1525), 1♀ [ QSBG]; Suphan buri, Khao Yai National Park , 10–17.II.1989, T.W.Thormin, MT, 1♀ ; Suphan buri, KhaoYai National Park , 900m, 30.VI.1990, J.Heraty, rnfor, 1♀, 2♂ ; Suphan buri, Khao Yai National Park, Haew Narok Waterfall , 550m, 2.VII.1990, J.Heraty, rainforest, H112, 1♀ ; Surat Thani, Khao Sok NP, Bang Huaraed , 8.9092, 98.5087, 122m, 14– 21.IV.2009, Pongphan, MT (T4571), 3♂ ; VIETNAM: North Central Coastal , Nghé An, West of Con Cuong , Khe Mai forest camp, 18.9333, 104.8166, 26–30.X.1994, D.Currie, meadow, 1♂ .

Holotype is deposited in CNCI. Paratypes are deposited in BMNH (3), CNCI (45), ZLMU (2) QSBG (5), ROME (3).