Agonoscena atlantica Bastin, Burckhardt & Ouvrard 2023, sp. nov.
Creators: name: Bastin, Saskia
name: Burckhardt, Daniel
name: Reyes-Betancort, Alfredo
name: Hernández-Suárez, Estrella
name: Ouvrard, David
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aphalaridae
Agonoscena
Agonoscena atlantica

description: * Agonoscena atlantica Bastin, Burckhardt & Ouvrard sp. nov.
(Figs 20–22, 89–93, 196, 219–223)
urn:lsid:zoobank.org:act: 32BEC112-C6FC-42E5-B6BE-AD28E4724C72
Material examined. Holotype ♂, Tenerife: Igueste de San Andrés, 28.5260 N, 16.1584 W, 100 m alt., 15.vi.2019, Pistacia atlantica (S. Bastin) (NHMB, dry mounted).
Paratypes. Tenerife: 1 ♂, 4 immatures, same data as holotype (ICIA, slide mounted, 70% ethanol); 11 ♂, 11 ♀, 4 immatures, Garachico, 28.3670 N, 16.7749 W, 300 m alt., 19.viii.2020, P. atlantica (A. Peña) (SBPC, slide mounted, 70% ethanol); 2 ♂, 2 ♀, same data but (MUSA, slide mounted, 70% ethanol); 2 ♂, 2 ♀, same data but (NHMB, slide mounted, 70% ethanol); 2 ♂, 2 ♀, same data but (ANSES, LSV, slide mounted, 70% ethanol); 3 ♂, 3 ♀, 9 immatures, same data but 4.xi.2021, P. atlantica (A. Peña) (SBPC, 70% ethanol).
Description. Adult. Colouration. General body colour light yellow brown. Head yellow brown with yellow spots and ventral face yellow. Antenna yellow with segments 1 and 2 light brown, apex of segment 8 and entire segments 9 and 10 dark brown or almost black. Thorax yellow brown with yellow spots. Legs light yellow. Forewings transparent, with brown cloudy pattern consisting of a zig-zag line along outer wing-margin and around apex of vein Cu 1b, and dark brown spots on veins. Hindwings whitish.Abdomen dark yellow in mature specimens and light green in teneral specimens. Male terminalia yellow. Female terminalia yellow and apex of proctiger light yellow brown.
Structure. Body length 1.4–1.5 mm. Head transverse. Compound eyes large, hemispherical. Vertex (Fig. 89) subtrapezoidal, 1.3 – 1.6 times as broad as long, with anterior margin in dorsal view straight, sparsely covered with very short setae; coronal suture developed, except for base where it is weak. Genal processes absent. Genae only weakly protruding. Antenna (Fig. 90) 1.0 – 1.2 times as long as head width, each of segments 4 to 9 with a single subapical rhinarium; antennal segment 10 with one terminal seta as long as segment and one 1.2 times as long as segment. Metacoxa (Fig. 91) with tubercular meracanthus and short, straight, slender tubular process on trochanteral cavity. Metatibia 0.8–0.9 times as long as head width, with an open crown of 10–12 sclerotised stout spurs apically. Metabasitarsus with 2 black apical spurs. Forewing (Fig. 92) ovate, elongated, 3.0–3.2 times as long as head width, 2.4–2.8 as long as wide; slightly widest in apical two thirds; vein C+Sc weakly curved in middle and flattened; pterostigma about half as wide as adjacent part of cell r 1; narrowly rounded at apex; vein Rs long, slightly sinuate; vein M almost straight, longer than vein M 1+2; vein M 3+4 weakly sinuate; cell m 1 elongated, m 1 cell value 1.6–1.8; vein cu 1a arched; vein cu 1b short, straight; cu 1 cell value 3.9–4.6; surface spinules forming indistinct cellular pattern, present in all cells and reaching veins; veins with short setae. Male terminalia as in Figs 20, 21, 93. Male proctiger cylindrical, 0.4–0.8 times as long as head width, anterior margin convex, covered with long setae in apical two thirds. Paramere 0.7–0.8 as long as proctiger, in lateral view, narrowly lamellar, gradually tapering in apical third, slightly bent backwards, with a slender pointed posterior lobe shorter than anterior lobe, arising in apical half, outer face with moderately long sparse setae mainly near posterior and anterior margins and with moderately long setae on posterior lobe, inner face with short setae mainly in apical part and near posterior margin. Distal segment of aedeagus strongly expanded in apical two thirds; sclerotised end tube of ductus ejaculatorius long and hardly sinuous. Subgenital plate subglobular, with straight posterior margin covered with moderately long setae and with long thick setae on posterior margin. Female terminalia as in Fig. 22. Female proctiger 0.8 times as long as head width, with dorsal margin concave and a median hump in apical half, truncate apically, bearing moderately long and short setae in apical two third and a few long setae near dorsal margin; circumanal ring with 2 complete rows of unequal pores. Subgenital plate subtriangular, subacute apically, bearing sparse short setae mainly in apical two thirds. Dorsal and ventral valvulae more-or-less straight, with apical blunt denticles ventrally.
Measurements (in mm) (4 ♂, 5 ♀). Head width ♂ 0.36, ♀ 0.37 – 0.39; vertex length ♂ 0.14 – 0.15, ♀ 0.14 – 0.18; vertex width ♂ 0.22 – 0.23, ♀ 0.23 – 0.24; antenna length ♂ 0.39 – 0.43, ♀ 0.39 – 0.42; metatibia length ♂ 0.30, ♀ 0.30 – 0.34; forewing length ♂ 1.1, ♀ 1.2; forewing width ♂ 0.22 – 0.23, ♀ 0.23 – 0.24; male proctiger length 0.16 – 0.17; paramere length 0.11 – 0.12; distal segment of aedeagus length 0.96 – 0.97; female proctiger length 0.29 – 0.30; female anal ring length 0.10 – 0.11.
Fifth-instar immature. Colouration. Yellowish including dorsal sclerites of head, thorax, abdomen and the wing pads dark brown. Tips of antennal segment 7 and tarsi brown.
Structure. Conforming to the generic description of Burckhardt & Lauterer (1989). Body (Fig. 196) 1.4–1.5 times as long as wide.Antenna 0.8–0.9 times as long as forewing pad. Inner margin of forewing pad almost straight. Caudal plate 0.6–0.7 times as long as wide. Anus ventral; outer circumanal ring composed of a single row of pores; with several additional oval pore fields. Marginal lanceolate setae moderately long, slender and truncate, present in following numbers: forewing pad 8 – 9, hindwing pad 4 and caudal plate 7–8 (each side). Caudal plate dorsally with numerous small short pointed lanceolate setae; marginal lanceolate setae relatively slender, each about 4 times as long as wide.
Measurements (in mm) (3 individuals). Body length 0.9‒1.0; length of forewing pad 0.40–0.42.
Etymology. Named after its provenience and in reference to its host plant Pistacia atlantica.
Host plant CI. Pistacia atlantica (Anacardiaceae).
Distribution CI. Tenerife.
Comments. Agonoscena atlantica is similar to A. pistaciae Burckhardt & Lauterer, 1989 in the forewing pattern and the shape of the male terminalia; also they share the same host species, Pistacia atlantica. The two species are allopatric. The former is endemic to Tenerife and the latter wide in the Middle East and Eastern Europe but has also been reported from the mainland of Spain where it is adventive (Rodrigo-Gómez & Burckhardt 2023). In A. atlantica the base of the posterior lobe of the paramere is wider and situated more towards the base of the paramere, and the sclerotised end tube of the ductus ejaculatorius is longer than in A. pistaciae. Another Agonoscena species developing on P. atlantica is A. targionii, which differs from A. atlantica in the longer and wider posterior lobe of the paramere, the thicker female terminalia and the forewing pattern with two transverse bands apically, rather than one as in A. atlantica. In the key of Burckhardt & Lauterer (1989), fifth-instar immatures of A. atlantica key out with A. pistaciae. The two species differ as follows (A. pistaciae condition given in parentheses): forewing pads slightly narrower and apically narrowly rounded (slightly broader and apically more widely rounded); and dorsum of caudal plate always bearing a few lanceolate setae (lanceolate setae usually lacking).
description: Published as part of Bastin, Saskia, Burckhardt, Daniel, Reyes-Betancort, Alfredo, Hernández-Suárez, Estrella & Ouvrard, David, 2023, A review of the jumping plant-lice (Hemiptera: Psylloidea) of the Canary Islands, with descriptions of two new genera and sixteen new species, pp. 1-98 in Zootaxa 5313 (1) on pages 17-18, DOI: 10.11646/zootaxa.5313.1.1, http://zenodo.org/record/8129996