Megadicrania tecticeps Loginova, 1976

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 : 23

* Megadicrania tecticeps Loginova, 1976

( Figs 114–117 , 198 , 237–240 )

Material examined. Tenerife: 8 ♂, 4 ♀, 3 immatures, Tegueste , finca Los Zamoranos, 28.5211 N, 16.3351 W, 400 m alt., 01.vii.2020, Olea cerasiformis (A. Peña, S. Bastin) ( SBPC, slide mounted, 70% ethanol); 1 ♂ , 2 ♀, 4 immatures, San Cristóbal de La Laguna, El Ortigal, 28.4714 N, 16.3562 W, 690 m alt., 1.xii.2020, O. europaea (S. Bastin) ( MUSA, slide mounted, 70% ethanol). Gran Canaria: 2 ♂ , 2 ♀, Barranco de Tirajana , near Santa Lucía de Tirajana, 630 m alt., 12.v.1993 (C. Lienhard) ( NHMB, dry mounted); 7 ♂ , 10 ♀, 1 immature, same data but ( MHNG, dry and slide mounted) ; 7 immatures, Santa Lucía de Tirajana , 27.9122 N, 15.5391 W, 720 m alt., 13.iii.2022, O. cerasiformis (S. Bastin) ( MUSA, 70% ethanol) .

Description. Adult. Loginova (1976).

Fifth-instar immature. Colouration from slide-mounted specimen. Sclerites, legs and wing pads dark brown. Antenna light brown, with segments 4–8 apically and segments 9 and 10 entirely dark brown or black. Membranes colourless.

Structure. Body ( Fig. 198 ) flattened, oval, 1.2 times as long as wide; irregularly covered with small lanceolate setae. Antenna 0.9 times as long as forewing pad, 10 segmented with a single rhinarium on each of segments 4, 6, 8 and 9; all segments each with 1 or 2 microscopic lanceolate setae, and segments 3–9 each with a very long fine seta. Thoracic tergites moderately large. Legs relatively long; both claws developed and of equal size; tarsal arolium small, fan-shaped, bearing unguitractor and petiole of about the same length as claws and relatively wide compared to small arolium. Forewing pad large and lacking humeral lobe, oblong oval, outer margin weakly convex, inner margin weakly concave, apex irregularly rounded. Caudal plate large, 0.8 times as long as wide, slightly truncate apically and bearing a marginal tubercle on either side. Anus in terminal position; circumanal ring large, convoluted, spreading dorsally and ventrally; outer ring consisting of 1 (medially) to 4 (laterally) rows of almost circular pores.

Measurements (in mm) (1 individual). Body length 1.5; length of forewing pad 0.76.

Distribution CI. Gran Canaria ( Loginova 1976). Tenerife (new record).

Host plant CI. Olea cerasiformis , O. europaea (Oleaceae) .

Biology. The immatures are free-living and produce a white waxy secretion under which they develop ( Fig. 240 ).

Figures

FIGURES 106–117. (106–107) Ctenarytaina eucalypti: (106) head, dorsal view; (107) forewing. (108–112) Euphyllura confusa: (108, 109) head, dorsal view; (110) antenna; (111) forewing; (112) pterostigma of forewing. (113) Euphyllura olivina, paramere, outer surface, lateral view. (114–117) Megadicrania tecticeps: (114) forewing; (115) male terminalia, lateral view; (116) paramere, outer surface, lateral view; (117) paramere, inner surface, lateral view.

FIGURES 196–201. Fifth-instar immature; (196) Agonoscena atlantica; (197) Agonoscena sinuata; (198) Megadicrania tecticeps; (199) Strophingia canariensis; (200) Strophingia paligera; (201) Diaphorina gonzalezi.

FIGURES 230–240. (230–233) Agonoscena targionii: (230, 231) adult, habitus; (230) lateral view; (231) dorsal view; (232, 233) immatures. (234–236) Euphyllura canariensis: (234) adult, habitus, lateral view; (235) fifth-instar immature; (236) waxy secretion on Picconia excelsa. (237–240) Megadicrania tecticeps: (237) adult, habitus, dorsal view; (238) fifth-instar immature; (239) immature; (240) waxy secretion on Olea cerasiformis. Photographs 234, 239 and 240 by Alfonso Peña Darias.