New species of Eretmocerus Haldeman (Hymenoptera: Aphelinidae) parasitizing Crenidorsum turpiniae (Takahashi) and Aleurothrixus floccosus (Maskell) (Hemiptera: Aleyrodidae) from Taiwan Author Shih, Yuan Tung Department of Entomology, National Taiwan University, Taipei, Taiwan; Author Polaszek, Andrew Department of Life Sciences, Natural History Museum, London, UK; Author Dubey, Anil Kumar Forest Entomology Division, Forest Research Institute, Dehradun, India; Author Chen, Shu-Pei Taiwan Agricultural Research Institute, Wufeng, Taiwan Author Yang, Ping-Shih Department of Entomology, National Taiwan University, Taipei, Taiwan; Author Ko, Chiun-Cheng Department of Entomology, National Taiwan University, Taipei, Taiwan; text Journal of Natural History 2015 2015-07-31 50 377 391 http://dx.doi.org/10.1080/00222933.2015.1075622 journal article 21260 10.1080/00222933.2015.1075622 e5971a71-001b-473f-93da-18bd7f3a8274 1464-5262 3991865 Eretmocerus tongxiaoensis Shih & Polaszek , sp. nov. ( Figures 4 , 5 ) Diagnosis Females of E. tongxiaoensis sp. nov. can be identified by having 6 setae on the mid lobe of the mesoscutum; an elongate, brown, cylindrical antennal clava, 7.1 – 7.88× as long as wide ( Figure 4C ); a long ovipositor which is approximately the same length as the clava; and a narrow fore wing, about 2.53× as long as wide ( Figure 5D ). Among the known Eretmocerus species from Taiwan , only E. orientalis Gerling has brown antennae, but has 4 setae on the mid lobe of the mesoscutum. All other Eretmocerus species in Taiwan have pale yellow or yellow antennae. E. tongxiaoensis shares having 3 paired setae laterally on T6 with E. queenslandensis , from which it differs by a shorter maximum fore wing fringe (0.25x wing disc;> 0.3 in E. queenslandensis ). Description (female holotype ). Length 0.75 mm ( Paratypes , 0.58 – 0.75 mm ( n = 5). Colour. Head yellow. Mesosoma orange-yellow except dorsellum, propodeum brown to dark brown. Gaster yellow except T7 brown anteriorly and laterally. Antennae amber. Wings hyaline. Legs pale yellow. Head. Vertex with 14 – 16 pair of setae. Face and occiput with transverse substrigulate sculpture, interscrobal area vertically substrigulate. Parascrobal area with 35 – 36 setae, 6 setae close to the edge of the eyes. Supraclypeal area with 5+5 setae, 2 posterior setae longer. Lower face with 20 – 24 setae. Clypeus with 2+2 setae, 2 setae longer ( Figure 4A ). Upper posterior head with 25 – 27 setae, 2 pairs short and robust setae close to the edge of eyes. Lower posterior head with 8+9 setae ( Figure 4B ). Antenna ( Figure 4C ). Radicle 3.6× as long as wide; scape 3.5× as long as wide, 2.70× as long as radicle, 1.84× of pedicel length, 0.54× of clava length; pedicel 2.88× as long as wide, 1.50× as long as radicle, 0.54× of scape length. Funicle I triangular-trapezoid, dorsal length 0.4× ventral length. Funicle II wider than long. Clava cylindrical, narrowed at apex, 5.0× as long as greatest width, 1.83× of scape length, 3.69× of pedicel length. Scape with one large sensillum close to the end. Clava with one large longitudinal sensillum and one thick sensillum close to the clava apex. Clava with 7 articulated spines. Figure 4. Eretmocerus tongxiaoensis sp. nov. : (A) head, front view; (B) head, posterior view; (C) antenna; (D) fore leg; (E) mid leg; (F) hind leg. Figure 5. Eretmocerus tongxiaoensis sp. nov. : (A) mesosoma ; (B) gaster; (C) ovipositor; (D) fore wing. Mesosoma ( Figure 5A ). Mid lobe of mesoscutum with 6 setae, anterior part with cellular reticulate sculpture, remainder with faint elongate reticulations. Each side lobe with 3 setae, anterior margins with elongate cellular reticulations; axilla with 1 seta, strongly reticulate. Scutellum with 4 setae, anterior pair shorter, 2 placoid sensilla laterally, closer to the posterior pair of setae, and sides with faint, elongate reticulations. Frenal arms short and not exceeding metanotum. Metanotum slightly narrower centrally than propodeum. Propodeum with strong transverse reticulations, central lobe broad and smooth, reaching half the length of gastral tergite I. Wings. Fore wing ( Figure 5D ) 2.53× as long as maximum width of disc. Longest posterior alar fringe 0.24× of disc width. Base of wing without setae, distal portion of costal cell with 7 setae. Marginal vein with 3 long setae, 9 – 25 setae between marginal vein and partial linea calva. Submarginal vein 1.50× as long as marginal vein and 2.81× of stigmal vein length. Marginal vein 1.56× stigmal vein length. Legs ( Figures 4D–F ). Mid tibial spur 0.34× basitarsus length. Hind tibial spur 0.37× basitarsus length. Gaster ( Figure 5B ). Gastral tergites I – VI with reticulations on lateral margins; paired setae as follows: 2, 2, 2, 3, 4, 4. Syntergum (T7) with 6 setae. Ovipositor prominent, exserted, nearly equal (0.93×) to length of clava, 2.13× length of scape, 0.94× length of mid tibia. Male. Unknown. Holotype ♀ (on slide), Taiwan : Miaoli , ex Crenidorsum turpiniae ( Takahashi ) on Turpinia formosana Nakai , 11 April 2011 , Y.T. Shih ( NTU ). Paratypes : 5♀♀ (on slides), data same as the holotype . ( 1♀ BMNH , 4♀ NTU ) . Distribution Taiwan : Tongxiao: Miaoli County . Host Hemiptera : Aleyrodidae : Crenidorsum turpiniae (Takahashi) (= Aleurotrachelus turpiniae Takahashi ). Remarks Eretmocerus tongxiaoensis resembles E. rui Zolnerowich & Rose (2004) , but differs from it in having antennae and T7 brown (antennae and T7 are yellow in E. rui ). Etymology The species is named after the type locality Tongxiao. Residents of this area kindly helped during collection. New records of Eretmocerus species from whiteflies and Taiwan Five Eretmocerus species are recorded here for the first time from Taiwan , of which four species provide new records for their host whiteflies. These are: E. bisetae from Dialeurodes citri ; E. flavus from D. citri and Bemisia sp. (= Lipaleyrodes sp.); E. rui from B. emilae and C. turpiniae ; and E. trialeurodis from B. emilae and T. vaporariorum . Details of voucher specimens are given below.