Mascarapion richardi ( Alonso-Zarazaga, 1983 ) Wanat & Poussereau, 2019

Wanat, Marek & Poussereau, Jacques, 2019, Mascarapion, a new genus of the Apioninae (Coleoptera, Curculionoidea) from the Mascarene Islands, Zootaxa 4615 (2), pp. 343-350 : 349

Mascarapion richardi ( Alonso-Zarazaga, 1983) , new comb. & stat. prom.

Apion (Aspidapion) roudieri nigrum Richard, 1957: 73 , nec Herbst, 1797.

Apion (Aspidapion) roudieri richardi Alonso-Zarazaga in Alonso-Zarazaga & Whitehead, 1983: 627 .

Material examined. 1 ♂: La Réunion 974, Coll: J. Poussereau / Plaine d’affouche, Pk 12, Battage dombeya, 04 03 2004 ; 1 ♂: La Réunion 974, Coll: J. Poussereau / Plaine d’affouches, Pk: 10,5 domleya, 29 04 2003 ; 1 ♂: La Réunion 974, Coll: J. Poussereau / Plaine d’affouches, Pk: 15 domleya p, 29 04 2003 ; 1 ♂: Réunion, Coll: A. Bled / Petite-Ile , Forêt de Bel-Air, battage, 29 02 2009 ; 1 ♀: La Réunion 974, Coll: J. Poussereau / Plaine des cafres, Caverne bateau, Battage mimosa, 27 03 2009 ; 1 ♀: La Réunion 974, Coll: J. Poussereau / La Roche êcrite, 1900 m, battage, 6 06 2003 In all 6 exs ( JPC 4 , MWC 2 ) .

Diagnosis. All body parts dark testaceous, much darker than in M. roudieri , claws not evidently distinct in colour from tarsal segments ( Figs 4–7). Scales on elytra slightly longer and more piliform than in M. roudieri , not as dense and numerous when aggregated in spots, often longer than width of elytral interval ( Fig. 10 ). Rostrum of similar length in both sexes, in male 0.98–1.09 × as long as pronotum and 2.58–2.76 × as long as its maximum width ( Fig. 5), in female 1.08–1.22 × as long as pronotum and 3.20–3.31 × as long as wide ( Fig. 6), thus in females much shorter than in M. roudieri . In both sexes antennal insertion much closer to rostrum base than eye length (♂: 0.64–0.85 ×, ♀: 0.71–0.85 ×); in female scape shorter than maximum rostrum width (0.87–0.93 ×) and 3 rd funicular segment barely elongate. Pronotum in male 1.27–1.51 ×, in female 1.50 × as wide as head. Elytra 1.73–1.85 × wider than pronotum, in male mid-length/base width 1.27–1.35, in female 1.49–1.52 × as long as wide. In male profemur slightly thinner than rostrum width (0.92–0.97), protibia weakly arched, 4.71–5.00 × as long as wide; in female protibia 0.96–1.00 as long as pronotum.

Male. Spiculum gastrale with apodeme longer than fork ( Fig. 24 ). Tegminal plate with ventral layer lighter medially; sclerotisation of parameroid lobes not expanded to apical lobes; fenestrae with small, fully transparent areas ( Figs 21, 22 ). Aedeagal apodemes 0.75 × as long as pedon; tectum wide, rounded apically; pedon about 3.4 × as long as wide; endophallus densely microspinose ( Figs 28, 29 ).

Female. Details of terminalia in as in M. roudieri .

Figures

FIGURES 9–18. Pronotum and elytral base: 9) Mascarapion roudieri; 10) M. richardi. 11) M. roudieri, female, underside of rostrum, SEM micrograph (scale bar 0.2 mm). 12–14. Male pygidium: 12) M. richardi, dorsal view; 13) same, lateral view; 14) M. roudieri, posterodorsal view. 15) M. richardi, sternite 8. 16–17. M. roudieri, female: 16) ovipositor; 17) spermatheca. 18) M. roudieri, male, metathoracic wing.

FIGURES 19–30. Terminalia: 19–23. Tegmen: 19) M. roudieri, dorsal view; 20) same, lateral view; 21) M. richardi, dorsal view; 22) same, lateral view; 23) same, anterior view. 24, 25. Spiculum gastrale (sternite 9): 24) M. roudieri; 25) M. richardi. 26–29. Penis: 26) M. roudieri, dorsal view; 27) same, lateral view; 28) M. richardi, dorsal view; 29) same, lateral view. 30) M. roudieri, female, tergite 7.