Metapocyrtus (Orthocyrtus) mansaka, Cabras & Bollino & Medina, 2018

Cabras, Analyn Anzano, Bollino, Maurizio & Medina, Milton Norman, 2018, A new species of the subgenus Orthocyrtus, genus Metapocyrtus (Coleoptera, Curculionidae, Entiminae, Pachyrhynchini) from Mindanao, with notes on its ecology, Baltic Journal of Coleopterology 18 (1), pp. 39-46 : 40-45

Metapocyrtus (Orthocyrtus) mansaka sp.n.

( Fig. 1 A-D)

Holotype ( Fig. 1 A-B), male: Philippines - Mindanao / New Albay / (Compostela) / V-VII.2017 / coll. Bollino. Presently in MBLI, it will be deposited in SMTD.

Paratypes (57 males, 43 females): 4 males, 4 females, Ph ilippines - Mt. Can dalaga, Maragusan, Compostela Valley, Mindanao Island / September, 2016/ Kim Jumawan ; 2 females from Cagan , Compostela Valley, all in CMUZM ; 9 males, 4 females, same data as HT ; 1 male, 1 female, Philippines - Mindanao I. / Masara - Compostela Valley / February 2014 / coll. Bollino ; 2 males, Philippines - Mindanao / Prosperidad / (Agusan del Sur) / March 2016 / coll. Bollino ; 2 males, Philippines - Mindanao / Compostela / Pantukan / IX.2015 / coll. Bollino ; 2 females, Philippines - Mindanao / Pantukan / Compostela / X.2015 / coll. Bollino ; 1 male, 1 female, Philippines - Mindanao / Masara / (Compostela) / III.2016 / coll. Bollino ; 1 male, 1 female, Philippines - Mindanao / Masara (Compostela Valley) / September 2014 / coll. Bollino ; 1 male, Philippines - Mindanao / Mt. Apo - Davao del Sur / III. 2013 / m 1400 - Leg. loc. people / coll. Bollino ; 1 female, Philippines - Mindanao / Compostela Valley / Masara / IX.2015 / coll. Bollino ; 1 male, 1 female, Philippines - Mindanao / Davao del Sur / Kapatagan / IX.2015 / coll. Bollino , all in MBLI; 1 male, 1 female, Philippines - Mindanao Island / Compostela Valley / Masara - II.2014 / Coll.Sandel ; 1 male, 1 female, Philippines - Mindanao Island / Compostela Valley / Masara - VII.2014 / Coll.Sandel ; 5 males 3 female, Philippines - Mindanao Island / Compostela Valley / Masara - XI.2014 / Coll.Sandel ; 1 male, 1 female, Philippines - Mindanao Island / Compostela Valley / Masara - XII.2014 / Coll.Sandel ; 1 male, 2 females, Philippines - Mindanao Island / Compostela Valley / Masara - XII.2015 / Coll.Sandel ; 1 male, Philippines - Mindanao Island / Compostela Valley / New Albay - II.2016 / Coll.Sandel ; 1 male, Philippines - Mindanao Island / Compostela Valley / New Albay - V.2016 / Coll.Sandel ; 2 males, 3 females, Philippines - Mindanao Island / Compostela Valley / New Albay - XII.2016 / Coll.Sandel ; 1 male, 1 female, Philippines - Mindanao Island / Compostela Valley / New Albay - IX.2016 / Coll.Sandel ; 8 males, 7 females, Philippines - Mindanao Island / Compostela Valley / New Albay - IV.2017 / Coll.Sandel ; 7 males, 4 females, Philippines - Mindanao Island / Davao Oriental / Mati -.2017 / Coll.Sandel , all in CFS; 5 males, 2 females, Compostela Valley / Maco, Masara / X. 2015, all in NIAES ; 1 male and 1 female, Compostela Valley / Masara / III. 2014 ; 1 male, Compostela Valley / Masara / II. 2017, all in KUM .

Diagnosis: Metapocyrtus (Orthocyrtus) mansaka n.sp. belongs to the subgenus Orthocyrtus , and differs from all other species of the subgenus for its elytral ornamentation.

Description: Dimensions: LB: 10.5-11.7 (holotype 11.5 mm). LR: 1.4-2.0 (2.0 mm). WR: 1.4-1.5 (1.5 mm). LP: 3.5-3.9 (3.8mm). WP: 3.9-4.0 (4.0 mm). LE: 7.4-8.1 (8.1). WE: 5.2-5.6(5.6). N=5.

Body metallic coppery brown; pronotum, head and legs coppery brown with weak lustrous of sparse pale yellow, green and reddish scales; body surface with weak lustrous with pale yellow, greenish to bluish and red scales. Eyes, antennae and tarsomeres black.

Head with the following markings: a) dense elongated yellow and green spot with tinge of red stripes under eye on each lateral side of rostrum, and b) elongated spot of yellow, green and red scales on front, extended to basal half of rostrum. Rostrum rugose, longer than wide with minute light brown hairs in the latero-ventral part, and long light brown hairs towards the apex; dorso-apically slightly convex; prominent transverse basal groove, and longitudinal median groove forming a cross shape. Front with deep depression covered with dense scales. Eyes small and weakly convex. Antennal scape as long as the funicle plus club, with flattened hair and sparse scales. Funicular segments I and II almost of the same length, 3 times longer than wide; segments III - VII as long as wide; club subellipsoidal, nearly 3 times longer than wide.

Pronotum subglobular, widest at middle, weakly convex, glabrous, with very minute and sparse punctures and hairs; thin bands of pale yellow to green scales at the anterior and posterior margin; triangular bands on lateral sides reaching towards the dorsum, not touching each other.

Elytra with regular weakly striate-punctate intervals with sparse scales, moderately convex, with few short apical hair. Each elytron with three bands: 1) broad band on basal part transversely extending from interval II to lateral margin, but not confluent; 2) broad transverse band in the middle part of elytra, medially; 3) apical triangular marking extending from apex of each elytron to apical third, laterally connected with median marking. Underside weakly lustrous with pale yellow and green scales on the basal margin of the pronotum and latero-ventral side of ventrites 1 and 2.

Legs wide with strongly clavate femora. Tibiae serrate along internal edge. Middle and hind femora covered with short hairs and sparse scales along posterior margins. Each tibia fringed with pubescence along internal margin, sparsely mixed with short hairs. Apical part of femora with dense metallic yellow and red scales and short setae. Tibiae with sparse scales and short setae, with minute teeth and long hair in the inner edge.

Tarsomeres covered by sparse pubescence.

Male genitalia as shown in Figure 2 A-D.

Everted endophallus as shown in Figure 3A . As underlined in other occasions (Bollino & Sandel, 2017), the procedure to obtain the eversion of the endophallus is not simple and easy at all, and this is especially true with Orthocyrtus . The red arrows in Figure 3 indicate the flagellar diverticulum which, in most case, everts only partially, except in very few samples. Despite the many dozens of attempts with Orthocyrtus specimens, we obtained the complete eversion of the flagellar diverticulum only in a couple of cases ( Fig. 3B ). Having examined the structure in nearly all the species belonging to the subgenus (including some undescribed taxa), we observed that its pattern is shared by all Orthocyrtus taxa, and by no other Metapocyrtus species.

Female. Dimensions: LB: 12.1-12.7: LR: 1.9- 2.1. WR: 1.4-1.5. LP: 2.9-3.2. WP: 3.9-4.1. LE: 9.0-9.3. WE: 6.3-6.6. N=5.

Habitus as shown in Figure 1 C-D

Elytra slightly wider and longer than the male. Shape of the elytra imperfectly obovate if compared to the male, largest at the base (in the male it is largest in the middle). Pronotum slightly shorter than in the male, not perfectly subglobular. Otherwise mentioned, similar to male.

Female genitalia as shown in Figure 2 E-G

Etymology

The new species is named after the Mansaka indigenous group living in Maragusan and nearby areas.

Figures

Fig. 1. A: Orthocyrtus mansaka Holotype; B: idem, lateral view; C: Orthocyrtus mansaka female; D: idem, lateral view

Fig. 2: Male genitalia and female terminalia of Orthocyrtus mansaka sp. nov. A: penis in lateral view; B: idem in dorsal view; C: idem in ventral view; D: sternite IX in dorsal view; E: ovipositor in dorsal view; F: sternite VIII in ventral view; G: spermatheca

Fig. 3. A: everted endophallus of Orthocyrtus mansaka n.sp.; B: fully everted endophallus of Orthocyrtus sp. (Mindanao, Surigao del Sur).