Macrophysoderes finisterre, Hwang & Weirauch, 2017

Hwang, Wei Song & Weirauch, Christiane, 2017, Uncovering hidden diversity: phylogeny and taxonomy of Physoderinae (Reduviidae, Heteroptera), with emphasis on Physoderes Westwood in the Oriental and Australasian regions, European Journal of Taxonomy 341, pp. 1-118 : 48-50

Macrophysoderes finisterre gen. et sp. nov.

urn:lsid:zoobank.org:act:4956E5F1-A185-4DA2-A4BE-119428AD3D42

Figs 8–10 , 12 ; Appendix

Diagnosis

This species is recognized among species of Macrophysoderes gen. nov. by the overall brownish-black color, the short conical head with semi-erect, curved setae on the postocular lobe between the ocelli, the length of the scape that just surpasses the apex of the clypeus, the very large eye that attains the ventral margin of the head in lateral view, the very short antero-lateral pronotal projections that are acute and diverging, the narrow anterior pronotal lobe, the very short scutellar process, the narrow connexivum, and the straight abdominal terminal margin. It most closely resembles M. cirripilosa gen. et sp. nov. and M. elongata gen. et sp. nov. It is differentiated from the former by the overall coloration, the shape of the antero-lateral pronotal projections, the narrower anterior pronotal lobe and the shape of the abdominal apical margin. It differs from the latter by the size, the shape of the scutellar process, the relative length of the head versus the body and the only slightly swollen fore femur.

Etymology

The name finisterre is a noun in apposition named after the holotype locality, the Finisterre mountain range in Papua New Guinea.

Material examined

Holotype

PAPUA NEW GUINEA: ♂, Madang Province, Finisterre Mts, Damanti , 5.92027° S, 146.22555° E, 1082 m, 2–11 Oct. 1964, collector unknown ( UCR_ENT 00069280 ) ( BMNH).

Paratypes

PAPUA NEW GUINEA: 1 ♂, Madang Province, Finisterre Mts, Damanti, 5.92027° S, 146.22555° E, 1082 m, 2–11 Oct. 1964, collector unknown ( UCR _ENT 00069278) ( BMNH); 1 ♂, same collection data as preceding ( UCR _ENT 00069276) ( BMNH); 2 ♂♂, same collection data as preceding ( UCR _ENT 00069274, UCR _ENT 00069275) ( BMNH).

Other material

PAPUA NEW GUINEA: Madang Province: 1 ♂, Finisterre Mts, Budemu Station no. 52, 5.95222° S, 146.37055° E, 1219 m, 15–24 Oct. 1964, collector unknown ( UCR _ENT 00069279) ( BMNH); 2 ♀♀, same collection data as preceding ( UCR _ENT 00069288, UCR _ENT00069289)( BMNH); 1 ♂, Finisterre Mts, Damanti Station no. 33, 5.92027° S, 146.22555° E, 1082 m, 2–11 Oct. 1964, collector unknown ( UCR _ENT 00069277) ( BMNH); 2 ♂♂, same collection data as preceding ( UCR _ENT 00069272, UCR _ ENT 00069273) ( BMNH); 2 ♀♀, same collection data as preceding ( UCR _ENT 00069285, UCR _ENT 00069286) ( BMNH); 1 ♀, same collection data as preceding but Damanti Station no. 34 ( UCR _ENT 00069287) ( BMNH). – Morobe Province: 2 ♂♂, Herzog Mts, Vagau C. Station 137, 6.76638° S, 146.8° E, 1219 m, 4–17 Jan. 1965, collector unknown ( UCR _ENT 00069281, UCR _ENT 00069282) ( BMNH); 2 ♀♀, same collection data as preceding ( UCR _ENT 00069283, UCR _ENT 00069284) ( BMNH).

Redescription

Male

BODY LENGTH. Medium size, total length 8.85 mm, SD ± 0.38 (Appendix).

COLORATION ( Fig. 10 ). Brownish-black. Head brownish-black. Scape of antenna straw-colored to light brown with brown apex, pedicel light brown suffused with brown, basiflagellomere brown, distiflagellomere basally brown, apically straw-colored. First segment of labium light brown, second segment basally and apically brown, medially straw-colored or light brown, third segment brown. Pronotum brownish-black, with faint brown ridges, scutellum basally brownish-black, apically including process brown, pleuron mixture of straw-color to dark brown, sternum brownish-black. Corium of hemelytron brownish black, membrane brownish black. Femora light-brown with sub-basal and apical dark brown annulations, tibiae light brown with basal, medial and apical dark brown annulations, tarsi and claws brown. Abdomen dorsally dull yellow, ventrally straw-colored or light brown with dark brown suffusion or patterns, anterior half of connexivum dark brown, posterior half light brown, sometimes indistinct, exposed part of pygophore brown.

VESTITURE. Densely setose. Head with widespread curved, setigerous tubercles, ventral surface of postocular lobe with two rows of small, setigerous tubercles, with pair of long, straight setae on postocular lobe posterior to ocelli. Anterior lobe of thorax with tuberculated, short, curved setae on lateral margins and along dorsal ridges, posterior lobe with short, curved setae on humeral angle and sparsely distributed along dorsal surface. Corium of hemelytron with short, curved setae. Legs with two rows of spines and setigerous tubercles, tibia with regular rows of tuberculated, stout, sharp setae. Connexival margin of abdomen with a few clubbed setae on each segment.

HEAD. Short conical; maxillary plate rounded apically; scape reaching apex of clypeus or surpassing apex of clypeus; eye distinctly projecting in dorsal view, about 1/5 length of head, attaining ventral margin of head in lateral view; height of anteocular lobe shorter than that of postocular lobe.

THORAX. Antero-lateral paired projections slightly acute, diverging or obsolete; surface of anterior lobe with low ridges; median pronotal depression contiguous with transverse sulcus; paramedian carina strongly defined; posterior lobe medially rugose; anterior pronotal lobe of equal length to posterior lobe,

narrower than posterior lobe, anterior lobe level with posterior lobe in lateral view; parascutellar lobe bell-shaped and skewed towards median; scutellar process very short, with subacute apex.

HEMELYTRON. Attaining tip of abdomen.

LEGS. Same as genus description.

ABDOMEN. Elongate ovoid, with straight terminal margin; connexival margin slightly undulating.

GENITALIA. Anterior margin of mediosternite 8 sharply emarginated, without medial apodeme; transverse bridge of pygophore broad, margin of anterior opening angular, apodeme present, apical margin of posterior opening smooth; cup-like sclerite apically rounded and rim ventrally sclerotized; arms of basal plate converging; ductifer with sclerotized rounded ring; endosomal struts conical, with subacute apex, basally divided into two plates; dorsal phallothecal sclerite subacute, with lateral broad, plate-like prolongations, elongated longitudinal plates close to dorsal surface.

Female

Similar in size and shape to males except having a wider abdomen and connexivum.

Ecology

This species was collected from an altitude between 1000 and 1200 m.

Distribution

This species is known only from the Finisterre and Herzog mountain ranges in eastern Papua New Guinea.

Remarks

Based on the phylogenetic analysis above, this species forms a monophyletic clade together with two other species from Papua New Guinea within Macrophysoderes gen. nov.

Figures

Fig. 8. Dorsal view of the male pygophore in species of Breviphysoderes gen. nov., Macrophysoderes gen. nov., Paraphysoderes Villiers, 1962 and Physoderes Westwood, 1845. For an explanation of the colored arrows, see keys on pages 37 and 66.

Fig. 9. Dorsal view of the phallus in species of Breviphysoderes gen. nov., Macrophysoderes gen. nov., Paraphysoderes Villiers, 1962 and Physoderes Westwood, 1845 (partial). Scale bars = 0.20 mm.

Fig. 10. Dorsal habitus images for species of Macrophysoderes gen. nov. and Nanophysoderes gen. nov. For an explanation of the colored arrows, see key on page 37. Scale bars = 2 mm.

Fig. 12. Distribution map for species of Macrophysoderes gen. nov.