Macrocyrtus rukmaneae, Barševskis, 2016

Barševskis, Arvīds, 2016, New Species Of Pachyrhynchus Germar, 1824 And M Acro Cyrtus H Eller, 1912 (C Oleop Tera: Curculionidae) From The Marinduque Island (Philippines) As A New Example Of Mimetic Species Pair, Acta Biologica Universitatis Daugavpiliensis 16 (1), pp. 1-6 : 4-5

Macrocyrtus rukmaneae sp. n.

( Fig. 4 , 5 )

Type material. Holotype, female: Philippines: Marinduque Isl., Boac, 06.2014, local collector leg. ( DUBC) ( Fig. 3A,B ). Paratypes: 4 females. Philippines : Marinduque Isl., Buenavista, 06.2016, local collector leg.

Distribution: Philippines: Marinduque Island

( Fig. 5 ).

Description. Measurements (mm): Length of body: 13.7–13.9; width of body: 5.8–6.0.

Body, antennae and legs black, slightly glossy, with very fine punctations, with spots, transverse and elongated lines of greenish, greenish - pink or pink scales. Underside of body with spots of metallic greenish scales.

Head black. Eyes black, relatively small, slightly flattened. Head smooth, with small punctuation, with small spot of greenish scales between eyes. Lateral sides of rostrum without spot of pale and greenish scales. Rostrum with deep elongated groove-shaped impression, weakly bulging in apical part. Apical bulge of rostrum flattened dorsally, impressed in middle. Rostrum with fine dorsal pubescence, covered by yellow sparse apical setae.Antennal scape relatively long, large and strongly clavate; remaining antennomeres relatively long, with sparse, short pubescence and some long setae; apical antennomeres club-shaped, subellipsoidal.

Pronotum subspherical, slightly flattened, with maximal width behind middle part, with very fine and sparse punctation and very fine reticulate microsculpture. Lateral sides of pronotum with band of greenish scales, frontal margin with transverse interrupted band of mixed greenish and pink scales. Basal portion of pronotum without spots or bands.

Scutellum very small, from above practically no visible.

Elytra black, lustrous, without metallic luster. Elytral intervals smooth, with fine microsculpture and coarse punctures in slightly impressed rows. Apical parts of each elytron with six elongated pink bands, interrupted behind middle part of elytra; after short interruption pink bands transversely extending basally and forming oblique wide band; first and fifth bands connected together; third band V-shaped in apical part and not intersect.

Legs black, with fine punctation and microsculpture, thick, with strongly clavate femori in middle. Tibiae serrate along internal margins, strongly incurved apically. Apical part of femori without spots. Tibiae sparsely minutely pubescent, with long hairs along internal margin, sparsely mingled with stout hairs. Tarsomeres with sparse and pale pubescence.

Male unknown.

Differential diagnosis. Macrocyrtus rukmaneae sp. n. in general appearance differs from other species of this genus with the shape and coloration of elytra. Each elytron of this species on apical part with six elongated pink bands, interrupted behind middle of elytra. After a short interruption pink bands will continue, but not reaches elytral base, end is extended transversely forming an oblique wide band. First and fifth bands are connected together. Third band in apical part V-shaped disjoint. Shape and color of elytra of other species are different.

Etymology. This species is named after my colleague Anita Rukmane (Daugavpils University, Daugavpils, Latvia).

Figures

Fig. 4. Habitus of Macrocyrtus rukmaneae sp. n. (A – lateral view, B– dorsal view).

Fig. 5. Distribution of Macrocyrtus rukmaneae sp. n. in Marinduque Isl.

Fig. 3. Distribution of Pachyrhynchus rukma- neae sp. n. in Marinduque Isl.