Cacopsylla maculatili Li, 2011

Cho, Geonho, Burckhardt, Daniel, Inoue, Hiromitsu, Luo, Xinyu & Lee, Seunghwan, 2017, Systematics of the east Palaearctic pear psyllids (Hemiptera: Psylloidea) with particular focus on the Japanese and Korean fauna, Zootaxa 4362 (1), pp. 75-98 : 89-93

Cacopsylla maculatili Li

( FIGS. 5−6 , 14 , 39−50 , 58, 60 )

Psylla pyricola sensu Kwon, 1983: 66 , p.p. nec Foerster, 1848: 77. Cacopsylla maculatili Li, 2011: 880 ; Luo et al., 2012: 74.

Cacopsylla qiuzili Li, 2011: 881 ; Luo et al., 2012: 76 , syn. nov.

Material examined. Japan: SUMMER FORM ‘ qiuzili ’: 96 ♂, 46 ♀, 13 IMMATURES, HONSHU, NAGANO PREF., KITASAKU- GUN, KARUIzAWA-CHÔ, NAGAHINATA (ALT. 1,150 M), 3.VII.2014, Pyrus ussuriensis VAR. hondoensis (H. INOUE), (NIFTS, DRY AND SLIDE MOUNTED, 99.5% AND 70% ETHANOL).— South Korea: WINTER FORM ‘ maculatili ’: 5 ♂, 4 ♀, GANGWON- DO, YANGU-GUN, BANGSAN-MYEON, CHEONMI-RI, SAN 1-1, 26.IV.2014, ON Prunus padus (S.H. LEE), (SNU, DRY AND slide mounted, 95% ethanol); 1 ♂, Gangwon-do, HONGCHEON-GUN, NAE-MYEON, MYEONGGAE-RI, 01.IV.2016, ON Pinus SP. (G. CHO), (SNU, 95% ETHANOL).—SUMMER FORM ‘ qiuzili ’: 1 ♀, GANGWON-DO, INJE-GUN, BUK-MYEON, MT. SEORAK, 27.VII.1982, P. ussuriensis (Y.J. KWON), (NIBR, DRY MOUNTED; IDENTIFIED AS Psylla pyricola ); 1 ♂, GANGWON-DO, INJE-GUN, HANGYE-RI, MORAN-GOL, 15.VII.2015, P. ussuriensis (G. Cho) , (SNU, 95% ethanol); 5 ♂, 5 ♀, GANGWON-DO, HONGCHEON-GUN, NAE-MYEON, GWANGWON-RI, 6.VI.2015, P. ussuriensis (G. CHO) , (SNU, DRY AND SLIDE mounted, 95% ethanol); 38 ♂, 41 ♀, Gangwon-do, Hongcheon-gun, Nae-myeon, MyeonggAE-RI, 7.VI.2015, P. ussuriensis (G. CHO) , (SNU, DRY AND SLIDE MOUNTED, 95% ETHANOL); 1 ♂, 1 ♀, SAME DATA bUT (NHMB, DRY MOUNTED); 5 IMMATURES, SAME DATA bUT 18.V.2016, P. ussuriensis (G. CHO) , (SNU, SLIDE MOUNTED).

Diagnosis. FOREWING OVAL ( FIGS. 40 , 46 ). GENAL PROCESSES ( FIGS. 39 , 45 ) CONICAL AND RObUST. MALE TERMINALIA ( FIGS. 41 , 47 ) RELATIVELY SMALL. PARAMERE ( FIGS. 43 , 49 ) LAMELLAR, WEAKLY S-SHAPED, SLIGHTLY NARROWING FROM bASE TO APEX WHICH IS IRREGULARLY ROUNDED AND SLIGHTLY PROJECTED CAUDAD; POSTERIOR MARGIN WEAKLY PRODUCED. APICAL DILATATION OF DISTAL SEGMENT OF AEDEAGUS ( FIGS. 44 , 50 ) SPOON-SHAPED. FEMALE TERMINALIA ( FIGS. 42 , 48 ) CUNEATE, RELATIVELY SHORT. LONG SETAE ON PROCTIGER FORMING AN INDISTINCT TRANSVERSE ROW. VENTRAL MARGIN OF FEMALE SUbGENITAL PLATE WEAKLY ANGULAR. WINTER FORM ‘ maculatili ’: FOREWING ( FIG. 40 ) WITH ONLY TWO SMALL FIELDS OF SCATTERED SURFACE SPINULES PRESENT IN CELL CU2, ONE AT THE bASE, THE OTHER NEAR APEX OF CLAVAL SUTURE. SUMMER FORM ‘ qiuzili ’: FOREWING ( FIG. 46 ) tinted yellow, with surface spinules present in all cells; abdominal tergites 3−5 dark brown, strongly CONTRASTING FROM OTHER LIGHT YELLOW TERGITES.—FIFTH INSTAR IMMATURE ( FIGS. 58, 60 ). MARGIN OF FORE AND HINDWING PAD WITH 7‒10 (MOSTLY NINE) AND TWO CAPITATE SETAE, RESPECTIVELY. AbDOMEN WITH TWO LARGE LATERAL AND TWO MEDIO- LATERAL FREE STERNITES ON EITHER SIDE OF MID-LINE. MARGIN OF CAUDAL PLATE WITH TEN PAIRS OF LONG AND SHORT SIMPLE SETAE, LACKING SECTASETAE. POSTERIOR MARGIN OF OUTER CIRCUMANAL RING IN DISTANCE FROM POSTERIOR MARGIN OF CAUDAL PLATE.

Description OF ADULT bY LUO et al. (2012) UNDER C. maculatili AND C. qiuzili . MEASUREMENTS AND RATIOS SEE TAbLE 2.

Fifth instar immature ( FIGS. 58, 60 ). GENERAL bODY COLOUR PALE YELLOW. SCLERITES OF bODY PALE bROWN. EYE REDDISH bROWN. APICAL HALF OF ANTENNAL SEGMENT 7 bLACK. BODY ( FIG. 58 ) OVAL. EYE WITH A SHORT SIMPLE OCULAR SETA. ANTENNA SLIGHTLY LONGER THAN FOREWING PAD, 7-SEGMENTED, WITH ONE APICAL RHINARIUM ON EACH OF SEGMENTS 3 AND 5, AND TWO ON SEGMENT 7. FOREWING PAD 2.1‒2.2 TIMES AS LONG AS WIDE, WITH ONE OR TWO RELATIVELY SHORT CAPITATE SETAE ON HUMERAL MARGIN PART AND 6‒8 ( MOSTLY SEVEN) LONG CAPITATE SETAE ON MARGIN OF POSTERIOR HALF, WITH SPARSE TINY, WEAKLY CAPITATE SETAE ON MARGIN AND DORSUM . HINDWING PAD WITH TWO LONG CAPITATE SETAE APICALLY AND SPARSE TINY, WEAKLY CAPITATE SETAE ON DORSUM. LEGS STOUT, HAIRY; MESO- AND METATIbIA WITH 2‒3 LONG CAPITATE SETAE; TARSAL AROLIUM AS IN OTHER PEAR PSYLLIDS WITH PETIOLE AbOUT AS LONG AS CLAWS. AbDOMEN WITH TWO LARGE LATERAL AND TWO SUbMEDIAN FREE STERNITES ON EITHER SIDE OF MID-LINE . CAUDAL PLATE SOMEWHAT NARROWLY ROUNDED APICALLY, WITH 7 VERY LONG (MUCH LONGER THAN OUTER CIRCUMANAL RING WIDTH) MARGINAL SETAE ON EITHER SIDE, LACKING SECTASETAE AND LONG DORSAL SETAE bUT WITH TINY, SPARSE WEAKLY CAPITATE SETAE ON DORSUM. OUTER CIRCUMANAL RING ( FIG. 60 ) RELATIVELY SMALL, STRONGLY CONCAVE ANTERIORLY, WEAKLY CONCAVE AT POSTERIOR MARGIN, CONSISTING OF A SINGLE ROW OF NARROWLY OVAL PORES; CAUDAL MARGIN IN DISTANCE FROM AbDOMINAL MARGIN. MEASUREMENTS AND RATIOS SEE TAbLE 2.

Distribution. JAPAN: HONSHU (NAGANO PREF.).— SOUTH KOREA: GANGWON-DO, GYEONGGI-DO ( KWON 1983, AS Psylla (Hepatopsylla) pyricola).— CHINA (JILIN, LIAONING).

Host plant. Pyrus ussuriensis MAXIM. ( ROSACEAE ).

Remarks. THERE ARE NO SIGNIFICANT DIFFERENCES IN THE MALE AND FEMALE TERMINALIA OF C. maculatili AND C. qiuzili , bUT THEY DIFFER IN bODY SIzE, FOREWING COLOUR AND SURFACE SPINULATION. WE INTERPRET THESE DIFFERENCES AS SEASONAL DIMORPHISM AND SYNONYMISE THE TWO NOMINAL SPECIES.

P. (H.) pyricola bY KWON (1983) IS A MISIDENTIFICATION OF C. maculatili AS SUGGESTED bY KWON’S DESCRIPTION AND CONFIRMED bY MATERIAL.

C. maculatili , AS DEFINED HERE, RESEMbLES MORPHOLOGICALLY C. fera (BAEVA) FROM TADzIKISTAN AND UzbEKISTAN ( BAEVA 1968; BURCKHARDT & HODKINSON 1986; LUO et al. 2012). C. fera DIFFERS FROM C. maculatili IN THE MORE RECTANGULAR (RATHER THAN TRIANGULAR) APICAL DILATATION OF THE DISTAL SEGMENT OF THE AEDEAGUS, THE HOST ( Pyrus korshinskyi LITV. = Pyrus bucharica LITV. VERSUS P. ussuriensis ) AND THE GEOGRAPHICAL DISTRIbUTION (CENTRAL ASIA VERSUS EAST PALAEARCTIC). THESE DIFFERENCES, THOUGH SMALL, SUGGEST THAT C. fera AND C. maculatili ARE DISTINCT SPECIES.

Figures

FIGURES 1−8. Habitus of Korean pear psyllids. 1. Cacopsylla burckhardti (adult male). 2. Cacopsylla burckhardti (immatures). 3. Cacopsylla jukyungi (adult female, summer form). 4. Cacopsylla jukyungi (adult female, winter form). 5. Cacopsylla maculatili (adult male, summer form). 6. Cacopsylla maculatili (adult male, winter form). 7. Cacopsylla sandolbaea (adult male).8. Cacopsylla sandolbaea (immature).

FIGURES 9−14. Dry-mounted specimens from Japan. 9. Cacopsylla burckhardti (in summer). 10. Cacopsylla burckhardti (overwintered). 11. Cacopsylla jukyungi (summer form, green). 12. Cacopsylla jukyungi (summer form, yellow). 13. Cacopsylla jukyungi (winter form).14. Cacopsylla maculatili (summer form).Scale = 1 mm.

FIGURES 39−44. Cacopsylla maculatili (winter form), adult (from Korea). 39. Head, dorsal view. 40. Forewing, dashed line represents the surface spinule area. 41. Male terminalia, in profile. 42. Female terminalia, in profile. 43. Paramere, inner surface.44. Distal segment of aedeagus. Scale = 0.1 mm.

FIGURES45−50. Cacopsylla maculatili (summer form), adult(from Korea).45.Head, dorsal view.46.Forewing, dashed line represents the surface spinule area. 47. Male terminalia, in profile. 48. Female terminalia, in profile. 49. Paramere, inner surface.50. Distal segment of aedeagus. Scale = 0.1 mm.

FIGURES57‒63. Fifth instar immatures.57. Habitus of Cacopsylla jukyungi (from Japan), dorsalview (left) and ventral view (right). 58. Habitus of Cacopsylla maculatili (from Japan), dorsal view (left) and ventral view (right). 59. Anal pore field of Cacopsylla jukyungi (from Japan). 60. Anal pore field of Cacopsylla maculatili (from Japan). 61. Arolium, claws, tarsus, and apex of tibia of Cacopsylla jukyungi (from Japan). 62. Forewing pad of Cacopsylla sandolbaea. 63. Anal pore field of Cacopsylla sandolbaea. Scale = 0.1 mm.