Mascarapion roudieri ( Richard, 1957 ), 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 : 347-349

Mascarapion roudieri ( Richard, 1957) , new comb.

Apion (Aspidapion) roudieri Richard, 1957: 71 .

Material examined. 4 ♂♂ 1 ♀: La Réunion 974, Coll: J. Poussereau /Plaine d’affouche, Pk 12, Battage dombeya, 04 03 2004 ; 2 ♂♂: La Réunion 974, Coll: J. Poussereau / La Roche êcrite, 1900 m, battage, 6 06 2003 ; 2 ♂♂ 5 ♀♀: La Réunion 974, Coll: J. Poussereau / Ft de Bélouve , Ch bras cabot, Battage dombeya, 21 12 2010 ; 1 ♂ 1 ♀: La Réunion 974, Coll: D. Martiré / Le Tampon 800 m, Maison doudou, Battage troéne, 29 12 2010 ; 1 ♂: La Réunion 974, Coll : J. Poussereau / Réunion 97, Ilet Alcide, battage, coll. D. Martiré, 25 11 2006 ; 3 ♂♂: La Réunion 97, Ilet salazes, battage, coll. S. Gasnier, 31 08 2006 ; 1 ♀: La Réunion 974, Coll: J. Poussereau /Petite-Ile, Forêt de Bel-Air , lumières, 26 01 2006 ; 1 ♀: La Réunion 974, Coll: J. Poussereau / La Roche êcrite, 1900 m, battage, 6 06 2003 . In all 22 exs ( JPC 17 , MWC 5 ) .

Diagnosis. Body entirely orange-testaceous, black claws contrasting well with much lighter tarsal segments ( Figs 1–3). Scales on elytra fine, hair-like, not longer than width of elytral interval ( Fig. 9 ). Rostrum markedly distinctly sexually dimorphic in length, in male 1.07–1.21 as long as pronotum ( Fig. 1) and 2.84–3.20 as long as its maximum width, in female 1.45–1.61 × as long as pronotum and 4.38–4.81 × as long as wide ( Fig. 8). The distance between antennal pit and rostrum base longer than (in female 1.14–1.23 ×) or subequal (in male 0.91–1.04 ×) to eye length; in female scape longer than maximum rostrum width (1.07–1.22) and 3 rd funicular segment 1.2–1.3 × as long as wide. Pronotum in male 1.65–1.70 ×, in female 1.60–1.65 × as wide as head. Elytra 1.59–1.76 × as wide as pronotum, in male at mid-length 1.21–1.28 × as wide as at base, in female 1.56–1.63 × as long as wide. In male profemur as thick or slightly thicker than rostrum width (1.00–1.06), protibia straight, 5.44–5.90 × as long as wide; in female protibia 1.04–1.11 × as long as pronotum.

Male. Spiculum gastrale with apodeme no longer than fork ( Fig. 24 ). Tegminal plate with evenly sclerotized ventral layer; sclerotisation of parameroid lobes narrowly extended to apical lobes along inner margins; fenestrae not transparent, with unclear margins ( Figs 19, 20 ). Aedeagal apodemes 0.65 × as long as pedon; tectum narrowed apically; pedon about 3.8 × as long as wide; endophallus densely microspinose ( Figs 26, 27 ).

Female. Tergite 8 subtruncate, with several long setae along apical margin. Ovipositor as in Fig. 16 , coxites weakly divergent; styli with several apical setae shorter than stylar length. Bursa unilobed. Spermatheca as in Fig. 17 , with thin duct and shapeless gland.

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.