Silhouettanus insulomagnus, Hill, Lionel, 2014

Hill, Lionel, 2014, Revision of Silhouettanus with description of nine new species (Hemiptera: Heteroptera: Schizopteridae), Zootaxa 3815 (3), pp. 353-385 : 365

Silhouettanus insulomagnus sp. n.

( Figs 4 , 5A , 18A , 19 , dimensions in Table 1 )

Type material. Holotype: MNHN (EH)19902, mac. ♂, New Caledonia, 22º23´S 166º56´, Cap Ndoua site 1, 150m, QM sample 11802, 28 Nov 2004, P. Grimbacher, beating rainforest, on four slides (head lost) in MNHN (EH).

Description. Brown without pale bands on wings; ratio of labial segment lengths 7:5:3:10; femoral and tibial setae relatively stout; costal lobe wide, R+M diverging from Sc basally so that subcostal cell elongate (albeit narrow and tapering proximally); cell R <discal cell, divergence of M from R distal to basal cell, less than one quarter of area of cell R distal to apex of discal cell; 1V joins Cu opposite tornus; vein setae either short or medium; fore femora with short thick dorsal distal setae; fore tibial and tarsal setae taper only distally rather than gradually; T8 not produced either end; anophore with short, straight spine in addition to the two major, anterior processes; left anophoric process, broad, straight, spatulate, projecting posteriorly at least halfway to margin of capsule; right anophoric process is a long, probably curved strut embracing genital capsule laterally; left paramere with bulbous base and short roundly tapering distal lobe; right paramere with bulbous base and slender, curved spinous distal lobe; one conjuntival sclerite bearing large crescentic process; second conjunctival sclerite bearing short, curved spine; vesica very short, recurved.

Notes. This species and the smaller S. insuloparvus are sympatric at Cap Ndoau at the southern tip of Grand Terre, New Caledonia (QM site 1, NC37-016).

Etymology. Latin, alluding to the large size of this insular species; adjective.

Figures

FIGURE 4. A – E, Silhouettanus insulomagnus male; A, right fore leg; B, midtarsus; C, midtibial apex; D, hind claws and paremepodia; E, T 8 and genital capsule with aedeagus half extracted, slide, dorsal. Abbreviations: a, anophore; C 1, major conjunctival process; lap, left anophoric process; lp, left paramere; rap, right anophoric process; rp, right paramere; v, vesica.

FIGURE 5. A, Silhouettanus insulomagnus male fore wing, dorsal; B – D, S. insuloparvus male; B, fore wing, dorsal; C, anophore and left process, dorsal; D, parameres and aedeagus. Abbreviations: bc, basal cell; C 1, major conjunctival process; dc, discal cell; lp, left paramere; rp, right paramere; scc, subcostal cell; tc, trapezoidal cell.

FIGURE 18. A, Silhouettanus insulomagnus, male mid pretarsus; B, S. magnus male, crossing of claval suture by 1 AN; C, Silhouettanus turbator male, papillae around periphery of cells on fore wing; D, Silhouettanus magnus male, polygonal mosaic of papillae on fore wing. Abbreviations: dc, discal cell; p, parempodium; r, rod supporting arolial vesicle; rc, cell R; x, crossing of claval suture by 1 AN; tc, trapezoidal cell; wc, wing coupling.

FIGURE 19. A, Silhouettanus insulomagnus male genitalia on slide, dorsal. Abbreviations: a, anophore; as, anophoric spine; bp, basal plate; C 1, major conjunctival process; Cy, basal conjunctival sclerite; f, fracture of anophore and spine near base of rap. lap, left anophoric appendage; lp, left paramere; rap, right anophoric process; rp, right paramere; v, vesica.