Makalapobius, Hugel & Desutter-Grandcolas, 2021

Makalapobius View in CoL n. gen.

( Figs. 1–24 View FIGURES 1–8 View FIGURES 9–11 View FIGURES 12–18 View FIGURES 19–24 ; 71–72 View FIGURES 71–76 ; 77 View FIGURE 77 )

Type species. Malakapobius aigrettensis n. gen., n. sp., here designated.

Species included. Malakapobius n. gen. includes Malakapobius aigrettensis n. gen., n. sp. and Malakapobius masihu n. gen. n. sp..

Distribution. South Western Indian Ocean: Mascarene islands, Mauritius; Comoros, Ngazidja ( Grande Comore).

Diagnosis. Makalapobius n. gen. is s uperficially similar to Burcus Gorochov, 1986 , to Paraburcus Gorochov, 2018 , and to Gabusibius n. gen. It is characterized by the following characters. TIII with 2 sai ( Fig. 5 View FIGURES 1–8 ; unlike Neoburcus Gorochov, 2018 which has 3 sai). Male winged ( Fig. 1 View FIGURES 1–8 ; unlike Taiwanemobius Yang & Chang, 1996 ); with distinct stridulum ( Fig. 7 View FIGURES 1–8 ; unlike Paranemobius Saussure, 1877 ); wings oval, truncated ( Fig. 1 View FIGURES 1–8 ; unlike Burcus Gorochov, 1986 with relatively long FW); without mirror ( Fig. 7 View FIGURES 1–8 ; unlike Speonemobius Chopard, 1924 with full mirror); with relatively long diagonal vein ( Fig. 7 View FIGURES 1–8 ; unlike Paraburcus with short diagonal vein). Male SGP trilobated ( Figs. 6 View FIGURES 1–8 , 15 View FIGURES 12–18 ); median lobe small, membranous, not longer than lateral lobes (unlike Burcus with only one single median lobe). Male genitalia ( Figs. 19–24 View FIGURES 19–24 : pseudepiphallus lightly curved upwards distally (curved downwards in Paraburcus , strongly upcurved from the middle in Burcus ); apex narrow in side view (unlike Gabusibius n. gen. with very wide apex in side view); apex with rounded distal lophi relatively contiguous; without apical lateral extensions forming large apical concavity visible dorsally (unlike most Burcus species ). Epi-ectophallic invagination not extending more anteriorly than rami insertion (unlike Burcus and Gabusibius n. gen. with long epi-ectophallic invagination exceeding rami insertion); rami very wide in side view (unlike all other genera except Gabusibius n. gen.).

Description. Including characters shared by other Burcini . Burcini of average size. General coloration typical for Burcini , from light grey to light yellowish, with numerous black patterns. Head, pronotum and femora with long black bristles ( Figs. 1–3 View FIGURES 1–8 ).

Head. Not wider than pronotum ( Figs. 1 View FIGURES 1–8 , 12 View FIGURES 12–18 ). Antennae dark, unbanded. Eyes moderately protruding, not flattened on head dorsum ( Figs. 1–3 View FIGURES 1–8 , 12–13 View FIGURES 12–18 ). Ocelli small; lateral ocelli rounded, well distinct; median ocellus less distinct, localized dorsally to fastigium tip; distance between lateral ocelli larger than distance between one lateral ocellus and median ocellus. Fastigium between antennae not wider that scapes ( Figs. 3 View FIGURES 1–8 , 13 View FIGURES 12–18 ); scapes wider than high (front view); palpi short, article length: 5>3>4; article 5 apex strongly widened.

Thorax. Pronotum ( Figs. 1–2 View FIGURES 1–8 , 12 View FIGURES 12–18 ) wider than long, 0.65–0.70 times as long as wide; DD sides subparallel, DD slightly narrower anteriorly, slightly enlarged before mid-length; DD anterior margin inconspicuously concave; DD posterior margin weakly rounded; DD longitudinal median furrow weakly imprinted; DD anterior transverse furrow distinct on the sides; LL shallow, higher anteriorly, less high posteriorly.

Legs. Legs of average size for Burcini , not elongated. TI with long narrowly oval outer tympanum; without inner tympanum. TI and TII with 2 ventral apical spurs, the inner the longest. FIII not particularly widened nor narrow ( Figs. 4 View FIGURES 1–8 , 14 View FIGURES 12–18 ): ca. 3.0–3.3 times as long as wide. TIII apical spurs typical of burcini ( Figs. 4–5 View FIGURES 1–8 ): 3 ao, 2 ai; relative length of apical spurs: ao2>ao3>ao1, ai2>ai1. TIII with 3 outer and 2 inner subapical spurs; relative length of subapical spurs: sao1=sao2>sao3, sai1>sai2. Hind tarsi long, particularly hind basitarsi. Hind basitarsi without dorsal serration (as usual in Nemobiini, see Desutter-Grandcolas et al. accepted); with 3 apical spurs: 2 dorsal apical spurs, the inner very small, 1 inner ventral apical spur longer than the dorsal outer one.

Wings. FW ( Figs. 71, 72 View FIGURES 71–76 ) present in males, absent in females. HW absent in both sexes.

Coloration. Head ( Figs. 1–3 View FIGURES 1–8 , 12–13 View FIGURES 12–18 ): Face with black patterns below the eyes converging to clypeus; semicircular area below antennae black; face black patterns surrounding a light yellow triangle pointing upwards; mandibles light yellow; scapes light yellow, antennae darker than scapes, not banded; palpi light yellow; genae light yellow; tip of fastigium black dorsally; semicircular area dorsal to antennae with dark pattern; occiput dark yellow. Thorax ( Figs. 1–2 View FIGURES 1–8 , 12 View FIGURES 12–18 ): Pronotum color variable, DD light yellow with black lateral spots near anterior margin or very dark with two light lateral spots near anterior margin; LL black, anterior ventral margin light yellow. Abdomen dark with or without light yellow spots. Legs ( Figs. 4–5 View FIGURES 1–8 , 14 View FIGURES 12–18 ): yellow or light yellow with darker bandings; FIII lateral side with dark basis, with 3 transverse dark bandings; TIII dark.

Male. Wings. FW ( Fig. 1, 7 View FIGURES 1–8 , 12, 16 View FIGURES 12–18 ) oval in shape, truncated apically. Stridulatory apparatus well developed, with relatively long diagonal vein; with well distinct chords, relatively long for Burcini ; without a mirror: FW distal part with reticulation ( Fig. 7 View FIGURES 1–8 ). Subgenital plate. Apex trilobated ( Fig. 6 View FIGURES 1–8 ), median lobe small, membranous, not longer than lateral lobes. Genitalia ( Figs. 19–24 View FIGURES 19–24 ). Pseudepiphallus narrow in dorsal view and side view, elongated, lightly curved upwards (sideview); apex with rounded distal lophi; without apical lateral extensions; without large apical concavity visible dorsally. Apodemes absent. Epi-ectophallic invagination not extending more anteriorly than rami insertion. Rami very wide (side view).

Female. No trace of wings ( Figs. 18 View FIGURES 12–18 , 72 View FIGURES 71–76 ). Subgenital plate ( Fig. 8 View FIGURES 1–8 ) trapezoidal. Ovipositor weakly up curved; weakly enlarged apically ( Fig. 17 View FIGURES 12–18 ). Genitalia. Copulatory papilla not examined.

Calling song. When known, male call is made of verses of increasing amplitude lasting more than 1 second ( Fig. 9–11 View FIGURES 9–11 ).