Takecallis alba Y. Lee

Lee, Yerim & Lee, Seunghwan, 2018, A review of the genus Takecallis Mastumura in Korea with the description of a new species (Hemiptera, Aphididae), ZooKeys 748, pp. 131-149 : 134-136

Takecallis alba Y. Lee sp. n. Figs 1A, 2, Table 1

Material examined.

Holotype: 1 alate viviparous female, Mt. Hwangbyeong, Pyeongchang-gun, GW, South Korea, 37°42'27"N, 128°41'14"E, on Sasa sp., Y. Lee leg., 29.viii.2013, no. 130829YR-11; Paratypes: 10 alate viviparous females, same data as the holotype; 7 alate viviparous females, Mungyeong-eup, Mungyeong-si, GN, South Korea, 36°47'11"N, 128°09'29"E, on Pseudosasa sp., S. Lee leg., 18.v.2005, no. 050518SH-38; 6 alate viviparous females, Mt. Hwangbyeong, Pyeongchang-gun, GW, South Korea, 37°42'27"N, 128°41'14"E, on Sasa sp., Y. Lee leg., 15.viii.2013, no. 130815YR-12; 5 alate viviparous females, Mt. Deokyousan, Muju-gun, JB, South Korea, 35°54'23"N, 127°48'51"E, on Pseudosasa sp., H. Lee leg., 30.vi.2014, no. 140630YR-2; 2 alate viviparous females, Inje-gun, Hangye-ri, Hangyeryng, GW, South Korea, 38°6'31"N, 128°24'49"E, on Sasa sp., Y. Lee leg., 15.vi.2015, no. 150615YR-3.

Etymology.

The species name alba is derived from Latin, referring to its pale body color.

Diagnosis.

T. alba sp. n. is morphologically close to T. assumenta Qiao and Zhang and T. affinis Ghosh. However, this species can be distinguished from the latter two species by the following characters: URS with four accessory setae (accessory setae absent in T. assumenta , two accessory setae in T. affinis ), URS 0.45-0.50 × HT 2 (0.43 in T. assumenta , 0.32-0.41 in T. affinis ), ANT III with 4-7 transversely elliptical secondary rhinaria densely concentrated on very short dark section of proximal 3rd of ANT III (6-10 elliptical secondary rhinaria, on basal 1/3 of the segment in T. assumenta , 10-16 subcircular secondary rhinaria on basal 2/5 of the segment in T. affinis ).

Description.

Alate viviparous female: Color in life. Head pale to yellow, compound eye red. ANT pale, marginal border of ANT I-II dusky, the top end of 1/3 of the segment, and distal joint of ANT III dark, distal joint of ANT IV - BASE dusky. Thorax and ABD TERG pale yellow to bright yellow. Legs pale, distal 2/5 of FEM with dark spot, tarsi dark. Wing veins dark, margins of wing veins with dark spots. SIPH pale. Cauda slightly dark. Entire body covered with white wax.

Morphology. Body oval, BL 2.08-2.51 mm long. Head with three pairs of anterior and two pairs of posterior short and pointed discal setae about 0.02-0.03 mm long, median protrusion on frons developed, epicranial suture and antennal tubercle developed, head dorsum without tubercles. ANT 6-segmented, 1.48-1.70 × BL, ANT III longest with 4-7 transversely elliptical secondary rhinaria in a row on the top end of 1/3 of the segment, Ls ANT III 0.25-0.50 × BD III, ANT IV-VI imbricated, ANT IV without secondary rhinaria, ANT IV longer than ANT V, PT 0.89-1.11 × BASE. Clypeus with nose-like processus bearing two hairs. Rostrum very short, barely reaching to fore coxae, URS short blunted, 0.05 mm long with four accessory setae, URS 0.13-0.15 × BASE, 0.45-0.50 × HT 2. Thorax smooth without tubercles. Fore coxae enlarged. Longest setae on TIB 0.06-1.00 × middle width of TIB, first tarsal segments with 6-7 setae, HT 2 0.10-0.11 mm long. Wing vein Pts of forewing slightly dark, margins of wing veins Cu1b, Cu1a, and M with dark spots. Dorsal ABD TERG I–VII with a pair of spinal setae on small elevations, ABD TERG VIII with a pair of spinal setae on a single elevation, ABD TERG margin I–IV with a single seta on cone-shaped marginal tubercle, 4th marginal tubercle 0.04-0.05mm. SIPH cylindrical 0.08-0.11 mm long, bearing 0.03-0.05 mm of single seta. Cauda knobbed 0.12-0.14 mm long with 9-12 setae. Anal plate bilobed, each lobe with 7-10 setae.

Distribution.

This species has so far been collected from Gyeongsangnam-do, Gangwon-do, and Jeollanam-do of South Korea.

Host plants.

This species feeds on the underside of leaves of Pseudosasa sp., and Sasa spp. ( Poaceae ). The host plants were identified by the first author using Lee (2003).

Remarks.

This species was first referred to as Takecallis sp. in Lee et al. 2017.