Drepanoza, Bastin & Burckhardt & Reyes-Betancort & Hernández-Suárez & Ouvrard, 2023

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, Zootaxa 5313 (1), pp. 1-98 : 44-45

Drepanoza gen. nov.

( Figs. 259, 260, 264, 266, 267 )

urn:lsid:zoobank.org:act:6744050C-F850-497F-8521-5A3FBB7A63C9

Type species: Drepanoza canariensis sp. nov., by present designation.

Diagnosis. Adult. Genal processes developed, conical, not constricted at base. Thorax, in lateral view, weakly curved dorsally.Anterior margin of mesosternum incised in middle; pleurosternal suture well developed; basisternum triangular; lateral part of katepisternum narrower than head; anterior part of katepisternum large, oval. Metacoxa lacking anterior lobe; bearing well-developed horn-shaped meracanthus. Metatibia with 1+2 (rarely 1+3) apical sclerotised spurs. Forewing indistinctly angled or narrowly rounded apically; trifurcation of vein R+M+Cu strict; vein Rs short, vein M branching distal to line connecting apices of veins Rs and Cu 1a. Paramere lamellar, simple. Distal segment of aedeagus with small lobe basally and very long, sickle-shaped process apically. Female terminalia short, cuneate. Fifth-instar immature. Body oval, flat. Body fringed with a single row of sectasetae or spatulate setae, dorsum lacking sectasetae. Antenna 7 segmented, strongly curved. Tarsal arolium circular, lacking pedicel; claws reduced. Forewing pad with humeral lobe. Anus ventral; outer circumanal ring transversely oval, consisting of a single row of pores.

Description. Adult ( Figs 259, 260, 264, 266, 267 ). Head as wide as or slightly narrower than thorax; in lateral view, inclined at about 45º from longitudinal body axis. Vertex subrectangular or subtrapezoidal, 0.4–0.8 times as long as wide; with a fovea on either side of median suture, which is fully developed; vertex beset with an oblique row of short setae anteriorly; anteriorly slightly produced and curving down to genae, from which it is separated by transverse suture; frons almost completely covered by median ocellus; genal processes developed, conical, subacute apically, not constricted at base, 0.5–1.2 times as long as vertex along midline. Antenna 10 segmented, 1.5–3.3 times as long as head width; with a subapical rhinarium on each of segments 4, 6, 8 and 9, and a subapical pair of fine setae on each of segments 3–9. Clypeus elongate, pear-shaped, with a pair or a group of apical setae; rostrum short, only distal segment visible in lateral view. Thorax, in lateral view, weakly curved dorsally; pronotum curved down and backwards laterally; propleurites with subequal episternum and epimeron and vertical suture. Anterior margin of mesosternum incised in middle; pleurosternal suture well developed; basisternum triangular; lateral part of katepisternum narrower than head; anterior part of katepisternum big, oval. Metacoxa lacking anterior lobe but bearing well-developed, pointed horn-shaped meracanthus. Ventral sense organs of metafemur situated in median position; apex bearing a few moderately long bristles. Metatibia 0.9–1.2 times as long as head width, slightly longer than metafemur; weakly swollen basally, with several uneven spines; usually with 1+2 (rarely with 1+3) apical sclerotised spurs. Metabasitarsus lacking lateral spurs. Forewing 2.5–3.3 times as long as broad, 4.0–5.9 times as long as head width; indistinctly angled or narrowly rounded apically; trifurcation of vein R+M+Cu strict; vein Rs short, weakly curved to costal wing margin; vein M branching distal to line connecting apices of veins Rs and Cu 1a; membrane transparent or semitransparent; radular areas present in cells m 1, m 2 and cu 1; surface spinules present in all cells, except for cells c+sc and r 1. Hindwing slightly shorter than forewing; costal setae grouped; veins R and M with short common petiole. Lateral setae on abdominal tergites restricted to the first visible segment. Male proctiger slightly produced posteriorly. Male subgenital plate, in lateral view, triangular or hemispherical. Paramere lamellar, simple. Proximal segment of aedeagus weakly curved basally; distal segment with small lobe basally and very long, sickle-shaped process apically; sclerotised end tube of ductus ejaculatorius short, slightly sinuous. Female terminalia short, cuneate. Female subgenital plate pointed or truncate apically. Valvula dorsalis triangular; valvula ventralis with 3 dorsal denticles; valvula lateralis membranous, more-or-less rounded apically.

Fifth-instar immature. Body oval, flat, 1.5–2.0 times as long as wide. Body fringed with a single row of sectasetae or spatulate setae, dorsum lacking sectasetae. Antenna 7 segmented, strongly curved. Tarsal arolium circular, lacking pedicel; claws absent. Forewing pad with humeral lobe. Anus ventral; outer circumanal ring transversely oval, consisting of a single row of oval pores.

Etymology. From the Ancient Greek δρέπανον = scythe, referring to the shape of the aedeagus projection, and the suffix -za, from Trio -za; gender feminine.

Comments. Drepanoza gen. nov. is erected here to contain the following four species currently referred to Trioza : Drepanoza fernandesi (Aguiar, 2001) comb. nov., D. lienhardi ( Burckhardt, 1981) comb. nov., D. montanetana (Aguiar, 2001) comb. nov. and D. pittospori (Aguiar, 2001) comb. nov., as well as the three species described below: Drepanoza canariensis sp. nov., D. fruticulosi sp. nov. and D. molinai sp. nov. With the exception of Drepanoza lienhardi , which has been reported from Israel, Saudi Arabia and Tunisia (Aguiar 2001), the genus is restricted to Macaronesia. Known hosts are species of Convolvulus (Convolvulaceae) , Lycium and Withania ( Solanaceae , both Solanales ) and Pittosporum (Pittosporaceae) ( Apiales ).

Unpublished molecular data suggest a phylogenetically close relationship of Drepanoza gen. nov. with the genera Dyspersa Klimaszewski , Hemitrioza Crawford , Percyella gen. nov. and Spanioza Enderlein (S. Bastin, unpublished data), which together constitute a strongly supported clade in the mitogenome analysis of Percy et al. (2018). Drepanoza differs from these genera in having the distal segment of the aedeagus bearing a sickle-shaped process, and in the immatures having a circular tarsal arolium and lacking claws. Drepanoza differs also in its host associations, from Dyspersa (mostly found on Apiaceae and Asteraceae ), Hemitrioza (on Asteraceae ), Percyella (on Convolvulus floridus ) and Spanioza (on Rubiaceae ).

Figures

FIGURES 259–268. (259–263) Drepanoza canariensis: (259, 260) adult, habitus; (259) dorsal view; (260) lateral view; (261, 262) immature; (263) adult with attached mite (Acari). (264, 265) Drepanoza fruticulosi: (264) adult, habitus, dorsal view; (265) immature. (266–268) Drepanoza molinai: (266) male, habitus, dorsal view; (267) female, habitus, lateral view; (268) immatures.