Psammoecus simonis Grouvelle 1892 Author Lee, Yerim Laboratory of Insect Biosystematics, Department of Agricultural Biotechnology, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea. E-mail: yleeii @ snu. ac. kr (Lee) yleeii@snu.ac.kr Author Kanturski, Mariusz Department of Zoology, Faculty of Biology and Environmental Protection, University of Silesia in Katowice, Bankowa 9, Author Lee, Seunghwan Laboratory of Insect Biosystematics, Department of Agricultural Biotechnology, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea. E-mail: yleeii @ snu. ac. kr (Lee) yleeii@snu.ac.kr text Zoological Studies 2018 2018-04-23 57 17 1 20 http://dx.doi.org/10.5281/zenodo.8055806 journal article 10.6620/ZS.2018.57-17 1810-522X PMC6517745 31966257 12825514 Mesocallis ( Mesocallis ) carpinicola Lee Y., sp. nov. ( Figs. 1 , 2 , 3 a-b, 5, 10; Table 1 ) urn:lsid:zoobank.org:act: 966B034F-6ABD-40AA-972B- 4FBDADB1ED2D Material examined : Holotype : 1 alate viviparous female, Jangsan-forest , Jangsan-ri , Maam-myeon , Goseong-gun, GN , South Korea , 35°02'48"N , 128°24'44"E , on Carpinus laxiflora , Yerim Lee and Hyoseok Lee leg., 3.v.2015 , no. 150503YR-11. Paratypes : 19 alate viviparous females, same data as the holotype , including DNA voucher no. Mes1-2, Mes1-3, Mes1-4, Mes1-5. Etymology : The species name, carpinicola , is derived from the genus name of the host plant ( Carpinus ) and the Latin suffix ‘-cola’ (dweller, inhabitant). Diagnosis : This species is close to M. ( M. ) pteleae in having similar coloration and Cu1b of forewing dark bordered. However, the new species can be distinguished from M . ( M .) pteleae by its shorter PT, 0.06-0.08 mm ( 0.08-0.10 mm in M. pteleae ) and shorter URS length, 0.10-0.11 mm ( 0.11-0.14 mm in M. pteleae ), ANT III with 4-5 setae ( 5-9 in M. pteleae ), URS with 4-6 accessory setae ( 8-9 in M. pteleae ), cauda with 10-15 setae ( 7-11 in M. pteleae ). Description ( Alate viviparous female ): Color in life : Head pale yellow, head vertex and ANT I-III fuscous, distal 1/3 of ANT IV and ANT V darken, BASE and distal 1/2 of PT also darken. Thorax and abdomen pale yellow. Legs pale, fore and hind tibiae including 1/9 of femur and tarsus black, 1/9 of middle tibiae and tarsi dark. Wing vein Cu1b of forewing bordered with black pigment. SIPH pale. Cauda and anal plate pale. Morphology : Body oval, BL , 1.30-1.55 mm . Head smooth with a flat median protrusion on frons, head vertex with 0.01 mm pointed setae, epicranial suture weakly developed, head dorsum without tubercles. ANT 6-segmented, 0.92-1.05 mm long, ANT 0.66-0.78 × BL , ANT III longest with 12- 16 narrow transversely elliptical secondary rhinaria in a row on the whole segment, with 4-5 short and pointed setae, ANT III-VI imbricated with very short and inconspicuous setae, Ls ANT III × 0.50 BD III , ANT IV without secondary rhinaria, ANT V shorter than ANT IV, PT 0.60-0.80 × BASE . Rostrum not reaching to middle coxae, URS 0.10-0.11 mm long with 4-6 accessory setae, URS 1.00-1.22 × BASE , 1.22-1.38 × HT II. Thorax smooth, without tubercles. Fore coxae weakly enlarged, longest setae on TIBIAE III 0.67-1.00 × middle width of TIBIAE III , HT I with 7 chaetotaxy, HT II 0.08- 0.09 mm long. Wing vein Rs of forewing weakly developed. Dorsal spinal setae sometimes on small elevations, conspicuous tubercles not developed, ABD VIII with a pair of spinal setae, ABD margin I-IV with a single seta on short cone-shaped marginal tubercles, 4th marginal tubercle 0.03 mm . SIPH cylindrical, truncated, 0.05-0.06 mm long. Cauda knobbed, 0.07-0.09 mm long, bearing 10-15 setae. Anal plate bilobed, each lobe with 6-8 setae. Distribution : So far, the species is known from Goseong-gun in the southern part of South Korea . Host plant : The species feed on the underside of leaves of Carpinus laxiflora ( Betulaceae ). Remarks : This species was first referred to as Mesocallis sp. in Lee et al. (2017) .