Longitergus similis, Pham, Minhlan, Bai, Xiaoshuan, Heiss, Ernst & Cai, Wanzhi, 2013

Pham, Minhlan, Bai, Xiaoshuan, Heiss, Ernst & Cai, Wanzhi, 2013, Aradidae from Vietnam II. Longitergus, a new genus and two new species of micropterous Mezirinae (Hemiptera: Heteroptera: Aradidae), Zootaxa 3709 (6), pp. 556-564 : 563-564

Longitergus similis n.sp.

( Figs. 18–33 )

Material examined: Holotype male labelled: Vietnam, Ninhbinh Prov. / Cuc Phuong Park, 350m / N 20°21.107 / E 105°35.378 / 16 V 2012 M.L.Pham // deposited in CAU; paratypes: 2 males, 2 females collected with holotype (CAU, CEHI); these types are designated and labelled accordingly.

Diagnosis. Closely related to Longitergus productus n.sp., sharing all essential body structures and dimensions, from which it is distinguished by the characters given below.

L. productus n.sp. L.similis n.sp.

Pronotum: (Figs. 1,12,15) (Figs. 18,21)

Anterolateral angles angulate, margins beset with more rounded, margins

setigerous tubercles without setigerous tubercles

Disk medially wide granulate ridge narrower granulate carina

Posterolateral humeri without granulate elevation distinct granulate elevation posteriorly of sublateral carina posteriorly of sublateral carina

Pilosity of legs and long, stiff and erect setae on short and adpressed setae on

Antennae larger tubercles smaller tubercles

Genitalic stuctures ( Figs. 6–11 ) ( Figs. 27–33 )

(see differences)

Other smaller differences observed range within the expected variability and are not of specific value. As the detailed description of L. productus n.sp fits perfectly—except the differences listed above—also to L. similis n.sp., it seems unreasonable to repeat its description. The new species can be easily recognized..

Measurements. Holotype male: Length 4.43; length / width of head 0.99/1.14; l/w pronotum 0.51/1.54; l/w scutellum 0.4/1.25; length of antennal segments I/II/III/IV = 0.46/0.33/0.55/0.36; ratio length of antennae / width of head 1.49; width of abdomen across tergite IV 2.45. Variation of size in paratypes: males 4.15–4.58; females 5.42–5.44

Etymology. Similis >Latin<close to, refers to the close relationship to L. productus n.sp. Distribution. This new species also originates from a rainforest area in northern Vietnam.

Figures

FIGURES 18 – 23. Longitergus similis n. sp. 18,21 — dorsal view; 19,22 — lateral view; 20,23 — ventral view: 18 – 20 — holotype male; 21 – 23 — paratype female. Scale bar = 1 mm.

FIGURES 24 – 33. Longitergus similis n. sp. male genitalic structures. 24 – 26 — pygophore dorsal, lateral and ventral; 27 – 30 — right paramere in different positions; 31 – 33 — phallus in dorsal, lateral and ventral position. Scale bar = 0.2 mm for Figs. 27 – 30.

FIGURES 2 – 11. Longitergus productus n. sp., male paratype. 2 — lateral view, antennae and legs partly removed; 3 — terminal ventral segments VI – VIII; 4 — pygophore dorsal view; 5 — pygophore ventral view; 6 – 8 — right paramere in different positions; 9 – 11 — phallus in dorsal, lateral and ventral position. Scale bar for Figs. 2, 3 = 1.25 mm.