Adapterops mamyi Trýzna & Baňař, 2017

Trýzna, Miloš & Baňař, Petr, 2017, Two new species of Adapterops (Coleoptera: Anthribidae) from protected areas of northern Madagascar, with a key to species, and new faunistic data on the genus, Zootaxa 4231 (2), pp. 238-250 : 239-243

Adapterops mamyi Trýzna & Baňař sp. nov.

( Figs. 1, 3 , 5–11 , 23 )

Type locality. North Madagascar, Antsiranana province, Forêt d´ Ambre , S 12°28´27.69´´, E 49°13´07.99´´, 496 m.

Type material. Holotype (male): N MADAGASCAR, ANTSIRANANA PROVINCE: ‘N MADAGASCAR, 19.i.2016, / Forêt d´ Ambre , 496 m / S 12°28´27.697´´, E 49°13´07.995´´ / M. Trýzna leg., night / beating of dead branches ’ ( BSNPC) . Allotype (female), Paratype (male): the same data as holotype ( MTDC). Red label [p] HOLOTYPE / ALLOTYPE / PARATYPE / Adapterops / mamyi sp. nov. / M. Trýzna & P. Baňař det. 2016.

Description. Male holotype. Measurements (in mm): Total body length—1.83. Head: total length—0.25; length of rostrum—0.14; maximum width of rostrum—0.29; length of eye—0.12; maximum width across eyes— 0.47; minimum distance between eyes—0.14. Antenna: length of segments: II—0.07, III—0.04, IV—0.04, V— 0.0 5, VI—0.05, VII—0.04, VIII—0.04, IX—0.11, X—0.09, XI—0.16. Pronotum: maximum length—0.58; width at carina—0.67; minimum width—0.36. Elytra: maximum length—1.07; maximum width—0.73.

Colouration of all body parts generally brown; scape, pedicel and funicle pale brown, antennomere VIII dark brown; antennal club dark brown, only antennomere XI slightly pale. Legs brown, distal part of tibiae dark brown. Pronotum and elytra with almost regular spots of whitish pubescence. Entire ventral part of body dark brown.

Vestiture. Head with sparse appressed setae, whitish between eyes, yellowish on dorsal part of rostrum. Antennae with pubescence, scape, pedicel and funicle covered by sparse brown suberect setae, antennal club with blackish appressed setae. Pronotum with whitish setae forming regular spots: two distinct on disc, two small indistinct on its anterior margin and two distinct longitudinal spots on lateral part of pronotum. Elytra also covered with whitish setae. Conspicuous transverse, more or less distinct stripe in central part of elytra, this narrow stripe is interrupted in its sutural part. Each elytron with less distinct spot on the second elytral interval in subbasal part and further spot on the first and the second elytral interval in preapical part, which can extend, though not clearly, to the sixth interval; on lateral part of elytron oblique stripe on the sixth to the eighth elytral interval. Apical margin of elytra with whitish edge. Legs including tarsomeres covered with dense, fine whitish decumbent setae. Venter of thorax and abdominal sternites with dense whitish pubescence. Pygidium covered with sparse whitish appressed setae.

Structure. Head. Dorsum of head without narrow longitudinal carina in the middle. Rostrum very weakly convex, anterior part with gentle sculpture. Eyes large, not emarginate, ocular index 0.85. Ratio of maximum width across eyes to the maximum width of rostrum 1.62. Antennae slightly longer than head and pronotum together in both sexes. Funicle thin, club moderately robust. Pronotum transverse (ratio of its length to its width at carina 0.87), gradually narrowed anteriorly, disc convex in middle. Dorsal transverse carina slightly curved. Posterolateral edges of pronotum obtuse-angular. Posterior margin conspicuously convex, fitting in concavity on base of elytra. Elytra oval, slightly narrowed posteriorly. Ratio of maximum length of elytra to maximum width 1.47. Anterior margin of elytra concave, corresponding with the convexity of posterior margin of pronotum. Surface of elytra deeply striate, width of each stria distinctly narrower than width of elytral interval. Abdominal ventrites I–V flattened in the middle.

Male terminalia ( Figs. 5–10 ). As generally described for genus, anterior margin of tergite VIII slighly convex, apodeme of sternite VIII slightly longer than segment VIII, tegminal process well developed, branches of basal piece divergent ( Fig. 8 ), apex of pedon regularly narrowing in ventral view ( Fig. 6 ).

Female. Abdominal ventrites I–V appropriately convex, without flattened area in the middle. Antennae as long as in male.

Differential diagnosis. Generally, the new species is similar to Adapterops cedrici Trýzna & Baňař 2015 and A. dimbyi Trýzna & Baňař sp. nov. From these species, it can by distinguished by brown antennal club in both sexes and its different colour pattern ( Figs. 1, 3 ). From A. dimbyi differs by diverging branches of basal piece ( Fig. 8 ) (converging in A. dimbyi ); convex anterior margin of tergite VIII ( Fig. 10 ) (straight in A. dimbyi ); more robust and denser sclerotized teeth on internal sac of aedeagus (sparsely distributed and smaller in A. dimbyi ) and regularly narrowing apex of pedon ( Fig. 6 ) (constricted basally in A. dimbyi ).

Etymology. Patronym, dedicated to Dr. Mamy A. Rakotoarijaona from Madagascar National Parks (Directeur des Opérations).

Habitat. Three specimens of the type series were collected by beating a single freshly dead branch of an unidentified species of deciduous tree. The small branch, lying on the ground, was still covered with intact bark layer and dry leaves; the largest diameter of branch did not exceed 5 cm. The branch was located in secondary forest (496 m a.s.l.) scarred by human activities along a path used by local people. Beating using an entomological net (for methods see Trýzna & Baňař, 2012) took place in early night time after nightfall between 8–11 o´clock p.m. The type locality of this species is shown in Fig. 11 .

Distribution. North Madagascar, Forêt d´Ambre ( Fig. 23 ).

Figures

FIGURE 11. Rain forest in Forêt d´Ambre, type locality of Adapterops mamyi sp. nov.

FIGURE 23. Distribution of Adapterops species in Madagascar.

FIGURES 1 – 4. 1, 3, Adapterops mamyi sp. nov., male holotype; 2, 4, Adapterops dimbyi sp. nov., male holotype; 1 – 2, dorsal habitus; 3 – 4, lateral habitus. Scale bars in mm.

FIGURES 5 – 10. Adapterops mamyi sp. nov., male holotype; 5, aedeagus, lateral view; 6, aedeagus, ventral view (arrow indicates regularly narrowing apex of pedon); 7, tegmen, lateral view; 8, tegmen, ventral view (arrow indicates tegminal process); 9, pygidium, dorsal view; 10, segment VIII and sternite IX, ventral view. Scale bars in mm.