Pachyrhynchus moniliferus ssp. herbidus, Rukmane, 2018

Rukmane, Anita, 2018, To The Knowledge Of Pachyrhynchus Moniliferus Germar, 1824 (Coleoptera: Curculionidae) Species Distribution And Biogeography With Description Of Two New Subspecies From Philippines, Acta Biologica Universitatis Daugavpiliensis 18 (2), pp. 233-242 : 236-237

Pachyrhynchus moniliferus ssp. herbidus subsp. n. ( Fig. 1C )

Type material. Holotype, male: ‘’ PHILIPPINES, Samar Island, Lope De Vega , IX. 2017, local collector leg.’’ (white rectangular card, printed) ; ‘’ HOLOTYPE, Male, Pachyrhynchus moniliferus ssp. herbidus Rukmane 2018 , det. Anita Rukmane, 2018’’ (red rectangular card, printed) ( DUBC) .

Paratypes: 4 males, 3 females; ‘’ PHILIPPINES, Samar Island, Lope De Vega , VII. 2017, local collector leg.’’ (white rectangular card, printed) ; ‘’ PARATYPE, Male, Pachyrhynchus moniliferus ssp. herbidus Rukmane 2018 , det. Anita Rukmane, 2018’’ (red rectangular card, printed) (2 specimens);

‘’ PHILIPPINES, Samar Island, Lope De Vega , VII. 2017, local collector leg.’’ (white rectangular card, printed); ‘’ PARATYPE, Female, Pachyrhynchus moniliferus ssp. herbidus Rukmane 2018 , det. Anita Rukmane, 2018’’ (red rectangular card, printed) (3 specimens) ; ‘’ PHILIPPINES, Samar Island, Lope De Vega , VIII. 2017, local collector leg.’’ (white rectangular card, printed); ‘’ PARATYPE, Male, Pachyrhynchus moniliferus ssp. herbidus Rukmane 2018 , det. Anita Rukmane, 2018’’ (red rectangular card, printed) (1 specimen) ; ‘’ PHILIPPINES, Samar Island, Lope De Vega , X. 2017, local collector leg.’’ (white rectangular card, printed); ‘’ PARATYPE, Male, Pachyrhynchus moniliferus ssp. herbidus Rukmane 2018 , det. Anita Rukmane, 2018’’ (red rectangular card, printed) (1 specimen) ;

11 specimens (8 males and 3 females) are stored in SMTD with the distribution of Philippines, Samar Island. Specimens were wrongly identified as P. moniliferus var. concinnus , this variation originally belong to P. moniliferus ssp. eburnus which is distributed on Mindoro Island. After carefull examination of type material of P. moniliferus var. concinnus from BNHM, it is clear, that specimens from SNTD belongs to P. moniliferus ssp. herbidus subsp. n. Red rectangular cards with the following text: ‘’ PARATYPE, Male, Pachyrhynchus moniliferus ssp. herbidus Rukmane 2018 , det. Anita Rukmane, 2018’’ are added to all male specimens and ‘’ ’ PARATYPE, Female, Pachyrhynchus moniliferus ssp. herbidus Rukmane 2018 , det. Anita Rukmane, 2018’’ to all female specimens.

Distribution: Samar Island ( Fig. 2 ).

Description. Male. Measurements (n=5): LB: 12.3 – 14.0 (holotype 14.0, mean 13.06); LR: 1.7 – 1.9 (holotype 1.9, mean 1.8); WR: 1.7 – 1.9 (holotype 1.9, mean 1.76); LP: 3.3 – 3.8 (holotype 3.8, mean 3.56); WP: 3.7 – 4.1 (holotype 4.1, mean 3.88); LE: 6.8 – 7.9 (holotype 7.9, mean 7.22); WE: 4.9 – 5.6 (holotype 5.6, mean 5.14). Dorsal habitus as in Fig. 1C .

Body black, shiny, underside and elytra with weaker lustre, with markings of metallic green recumbent round scales; rostrum in dorsal contour straight, weakly bulging in basal ½, length and width sub equal, LR/WR: 1; two oval shape impressions on apical part, bulge in submedian part and triangular impression in basal part, without longitudinal groove; each side of rostrum densely covered with metallic green scales; long golden hairs on each lateral part near apex; forehead wide, bulging medially, with longitudinal stripe of metallic green scales; eyes big, redirected laterally, convex from the outline of the head; antennal scape incurved ventrally, furnished with long light hairs on apical part dorsally; prothorax with the following markings of metallic green scapes: 1) transverse line of scales along apical margin from one lateroventral part to other, stripe interrupts in the middle; 2) patch of scales on each lateroventral part; 3) transverse line along middle of pronotum from one lateroventral margin to other; 4) dorsum with longitudinal line on median part of disc from basal margin to middle of disc; wider than long, WP/LP: 1.08; widest slightly above middle; with shallow impression on disc dorsally; elytra widest in middle; LE/WE: 1.41; wider than prothorax, WE/WP: 1.37; more than twice as long as prothorax, LE/LP: 2.08; intervals well pronounced; each elytron with the following metallic green scale lines: 1) transverse line on sub – basal part along basal margin, line slightly interrupts on suture and goes to lateroventral margin where line incurves and goes all long the lateral margin of elytron, another incurve near apex on middle of interval II; 2) transverse line along midline of elytron, line slightly interrupts on suture and goes to lateral margin; 3) longitudinal line along interval III from sub – basal part to apex, near apex line extends from middle of interval II to middle of interval IV.

Male aedegal body as shown in Fig. 3C, D .

Female. Measurements (n=3): LB: 12.2 – 13.6 (mean 12.9); LR: 1.8 – 1.9 (mean 1.83); WR: 1.7 – 1.8 (mean 1.73); LP: 3.1 – 3.4 (mean 3.2); WP: 3.4 – 3.8 (mean 3.63); LE: 6.2 – 7.8 (mean 7.23); WE: 5.2 – 5.8 (mean 5.5).

Differential diagnosis. This new subspecies clearly differs from the other subspecies by following features: rostrum without longitudinal groove; longitudinal scally patch of scales on forehead; eyes bigger than in other subspecies, convex from outline of the head; long, light hairs on apical part of antennal scape; pronotum widest slightly above middle; in order with restricted distribution of new subspecies which is Samar Island, none of P. moniliferus subspecies were recorded from this island previously.

Etymology. This new subspecies is named after its metallic green scally markings, which remind grassy green colour. One of translations from Latin for green colour is Hebridus. Herbidus – green.

Figures

Fig.1. Dorsal habitus of P. monilifureus ssp. babuyanensis subsp. n. and P. moniliferus ssp. herbidus subsp. n. A – Male of P. monilifureus ssp. babuyanensis subsp. n.; B – Female of P. monilifureus ssp. babuyanensis subsp. n.; C – Male of P. moniliferus ssp. herbidus subsp. n..

Fig.2. Distribution of P. monilifureus ssp. – P. moniliferus ssp. babuyanensis subsp. n. (marked with red); P. moniliferus ssp. chevrolati (marked with purple); P. moniliferus ssp. eburnus (marked with yellow); P. moniliferus ssp. herbidus subsp. n. (marked with green); P. moniliferus ssp. jagori (marked with blue); P. moniliferus ssp. moniliferus (marked with orange); P. moniliferus ssp. stellulifer (marked with brown).

Fig. 3. Male aedegal body of P. monilifureus ssp. babuyanensis subsp. n. and P. moniliferus ssp. herbidus subsp. n. A – lateral view of P. monilifureus ssp. babuyanensis subsp. n., B – dorsal view of P. monilifureus ssp. babuyanensis subsp. n., C – Lateral view of P. moniliferus ssp. herbidus subsp. n., D – dorsal view of P. moniliferus ssp. herbidus subsp. n.