Cacopsylla nasuta ( Horváth, 1904 )

Lashkari, Mohammadreza, Burckhardt, Daniel & Manzari, Shahab, 2022, On the identity of Cacopsylla nasuta (Horváth, 1904) (Hemiptera: Psyllidae), Zootaxa 5134 (1), pp. 144-150 : 145-149

Cacopsylla nasuta ( Horváth, 1904)

( Figs 1B, D, F, H , 2, 3B, D, F, 4B, D)

Psylla nasuta Horváth, 1904: 590 ; Šulc 1913: 419; Baeva & Kankina 1971: 83.

Cacopsylla nasuta ( Horváth, 1904) ; Burckhardt & Önuçar 1993: 557; Malenovský et al. 2012: 7 .

Psylla hippophaes sensu Baeva, 1985: 260 , nec Foerster, 1848: 73; Gegechkori & Loginova 1990: 66; misidentification.

Redescription. Adult. Colouration. Body yellowish brown. Antennal segments 1–8 yellowish brown, segments 6–8 dark brown apically, segments 9 and 10 entirely dark brown. Genal processes yellowish brown with darker apex. Compound eyes grey, ocelli reddish brown. Pronotum yellowish brown with six light spots. Mesopraescutum yellowish brown with a light mid-line. Mesoscutum yellowish brown with six longitudinal light stripes. Legs generally dirty yellow. Forewing transparent with light brown veins. Terminalia yellowish brown; tip of paramere and female proctiger dark brown.

Structure. Head approximately as wide as thorax; vertex 0.5–0.6 times as long as broad; genal processes slightly longer than vertex along mid-line, with subparallel axes, strongly narrowing in proximal half, slender in distal half, obliquely truncate apically, with long setae ( Fig. 1B ). Antenna 1.8–2.0 times head width; relative length of antennal segment 10 and terminal setae as 1.0: 1.0: 1.4 ( Fig. 1D ). Thorax moderately arched. Metatibia 0.7–0.8 times as long as head width, with well-developed genual spine and five grouped sclerotised apical spurs as 1+3+1. Metabasitarsus with two lateral sclerotised spurs. Forewing membranous, oval, 3.6–4.0 times as long as head width, 2.4–2.5 times as long as broad; pterostigma long, relatively evenly narrowing to apex; cell cu 1 slightly longer than high; surface spinules restricted to patches along wing margin and sometimes narrow fields in the middle of cells ( Fig. 1F, H ). Hindwing shorter than forewing, membranous; costal setae, distal to costal brake, not grouped; veins M and Cu with short common stem. Terminalia as in Fig. 2 . Male proctiger simple, 0.4–0.5 times as long as head width, moderately to densely beset with long setae in distal four fifth. Male subgenital plate subglobular sparsely beset with long setae ( Fig. 2A ). Paramere about as long as proctiger; digitiform, hardly curved with subparallel fore and hind margins, evenly tapering apically ending in sclerotised, forward pointing hook which is slightly angular in dorsal view ( Figs. 3B, D , 4B ); beset with long fine setae on outer and inner face, except for basal quarter ( Fig. 2B ). Distal segment of aedeagus slightly longer than parameres, with very long and slender stalk and subrectangular apical inflation bearing a blunt hook apically ( Fig. 3F ). Female proctiger 1.8–1.9 times as long as head width, with almost straight dorsal outline that is weakly raised in distal third, very slender in apical third with narrowly rounded apex; beset with short setae around circumanal ring, long setae in basal half laterally, a submedian longitudinal row of very long setae on either side in apical half and dense peg setae in apical third ( Fig. 2E ), laterally; proctiger 4.7–5.4 times as long as circumanal ring, composed of two unequal rows of pores; proctiger 1.3–1.4 times as long as subgenital plate, which is subacute apically; covered with long sparse setae in apical three quarters laterally and ventrally, with sparse, shortish setae laterally and dense peg setae in the apical half which are longer than those on proctiger ( Fig. 2F ). Dorsal and ventral valvulae hardly curved, lacking teeth.

Measurements (5 ♂, 5 ♀, in mm). Head width 0.65–0.70; antenna length 1.30–1.40 mm; metatibia length 0.55–0.62; forewing length 2.50–3.10; male proctiger length 0.25–0.27; female proctiger length 1.20–1.25.

Distribution. Kyrgyzstan, Tajikistan ( Horváth 1904, Baeva & Kankina 1971, as Psylla nasuta ; Baeva 1985, as Psylla hippophaes ); Iran, new record. The records of C. hippophaes from the Caucasus, Kazakhstan, Siberia and Uzbekistan ( Gegechkori & Loginova 1990) as well as from the Republic of Altai ( Russia, Siberia) ( Labina 2008) probably concern C. nasuta .

Figures

FIGURE 1. Cacopsylla spp. A, C, E, G, C. hippophaes; B, D, F, H, C. nasuta. A, B, Head; C, D, antennal segments 9 and 10 and terminal setae; E, F, male forewing; G, H, female forewing.

FIGURE 2. Cacopsylla nasuta. A, Male terminalia, in profile; B, paramere, inner face; C, female terminalia, in profile; D, valvulae, in profile; E, peg setae on female proctiger; F, peg setae on female subgenital plate.

FIGURE 3. Cacopsylla spp. A, C, E, C. hippophaes; B, D, F, C. nasuta. A, B, Sclerotised apical hook on paramere, in profile; C, D, paramere, inner face; E, F, apical inflation of distal segment of aedeagus, in profile.

FIGURE 4. Cacopsylla spp. A, C, C. hippophaes; B, D, C. nasuta. A, B, Sclerotised apical hook of paramere, in profile; C, D, female terminalia, in profile.