Mesocallis (Mesocallis) carpinicola Lee Y., sp., 2018

Lee, Yerim, Kanturski, Mariusz & Lee, Seunghwan, 2018, Psammoecus simonis Grouvelle 1892, Zoological Studies 57 (17), pp. 1-20 : 4

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).

Figures

Fig. 1. Collection sites of Mesocallis spp. specimens collected in this study (●) and museum specimens (♦).

Fig. 2. A pictorial key to the species of Mesocallis in the Korean peninsula. © 2018 Academia Sinica, Taiwan

Fig. 3. Representatives of Mesocallis (Mesocallis) of Korea in life: (a) alate viviparous female of M. (M.) carpinicola sp. nov.; (b) alatoid nymph of M. (M.) carpinicola sp. nov.; (c) alate viviparous female of M. (M.) pteleae; (d) alatoid nymph of M. (M.) pteleae; (e) alate viviparous female of M. (M.) sawashibae; (f) alatoid nymph of M. (M.) sawashibae.