Neocarventus, Usinger and Matsuda, 1959

Larivière, Marie-Claude & Larochelle, André, 2022, Synopsis of the subfamily Carventinae in New Zealand (Heteroptera: Aradidae), Insecta Mundi 2022 (961), pp. 1-54 : 26-27

Key to species of Neocarventus

Females of N. angulatus , N. potterae and N. montanus are morphologically close and therefore more easily identified when associated with males.

1. Thorax gradually increasing in width from pronotum to metanotum, appearing subtriangular. Lateral margins of metanotum slightly sinuate (male,female); posterolateral angles slightly produced, forming narrowly subtriangular spines (male). Fig. 67 , 69 . [Forebody contrastingly dark, especially in female. North Island : Northland (ND)]............................................................................ Neocarventus northlandicus Larivière and Larochelle , new species

— Thorax with pronotum and mesonotum distinctly narrower than metanotum, appearing strongly narrowed anteriorly. Lateral margins of metanotum more strongly sinuate (male, female); posterolateral angles more strongly produced, forming more broadly curved or angular spines (male)........ 2

2(1). Species rather large and dark; body length about 3.4 mm (male), 3.8 mm (female). Lateral margins of mesonotum subrectilinear (male). Tergal plate of abdomen (female) dull yellowish brown, moderately contrasting against darker thorax. Fig. 66 (male). [North Island: Ruahine Range (RI)].................................... Neocarventus montanus Larivière and Larochelle , new species

— Species smaller and overall paler; body length about 3.1 mm (male), 3.5 mm (female). Lateral margins of mesonotum slightly concave or convex (male). Tergal plate of abdomen (female) bright whitish yellow to yellowish brown, strongly contrasting against darker thorax....................... 3

3(2). Lateral margins of mesonotum slightly to moderately convex (male), subrectilinear-sinuate to very slightly convex (female); posterolateral angles rather flat. Metanotum (male) with posterolateral angles moderately produced, forming curved to slightly sinuate or slightly angular spines. Fig. 64 , 68 . [North Island: BP (eastern), CL, GB, HB, WN]................................................................................... Neocarventus angulatus Usinger and Matsuda

— Lateral margins of mesonotum slightly to moderately concave (male), subrectilinear-sinuate to very slightly concave (female); posterolateral angles upturned. Metanotum (male) with posterolateral angles strongly produced, forming distinctly angular spines. Fig. 65 (male). [North Island: AK, BP (western), TK, TO, WO]......... Neocarventus potterae Larivière and Larochelle , new species

Figures

Figures 64–67. Dorsal habitus. 64) Neocarventus angulatus, male. 65) N. potterae new species, male. 66) N. montanus new species, male. 67) N. northlandicus new species, male. Scale line = 1 mm.

Figures 68–71. Dorsal habitus. 68) Neocarventus angulatus, female. 69) N. northlandicus new species, female. 70) Tuataraptera unca, male. 71) T. unca, female. Scale line = 1 mm.