Carventaptera 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 : 18

Genus Carventaptera Usinger and Matsuda, 1959

Fig. 19 , 26–27 , 36–37 , 56–59 , 75–76

Carventaptera Usinger and Matsuda, 1959: 161 .

Type species. Carventaptera spinifera Usinger and Matsuda, 1959 , by original designation.

Description (incrustation removed). Apterous. Body subrectangular; length about 4.1 mm (male), 4.9 mm (female). Head. Eyes rather small in relation to head, granulate. Postocular tubercles acutely subtriangular, slightly to strongly produced laterally. Rostrum arising from a closed atrium. Thorax. Pro-, meso-, and metanotum separated by distinct sutures. Vestigial wing pads present, appearing as small narrow plates fused to the thorax, extending backward along anterior fifth of fused dltg II–III of connexivum (vestigial wing pads absent in other genera). Pronotum. Double-ring collar distinctly set off from anterior margin, with lateral tubercles and posteriorly produced subtriangular plate (sometimes ill-defined). Disc bearing two moderately large roundedsubtriangular plates, one on each side of a broad median sulcus. Lateral portions with a moderately to strongly elevated submarginal area of fine to coarse granules (finer, more closely set together along lateral margin). Mesonotum. Disc bearing a moderately large V-shaped plate with a backward projection reaching anterior three-quarters of metanotum; apex of backward projection flanked by two small, rounded-subtriangular metanotal callosities. Metanotum. Disc largely covered by mesonotal projection. Posterolateral angles unproduced. Legs. Coxal lobes rugose. Trochanters and femora demarcated from each other. Femora granulate, about as long as tibiae. Protibiae with fine ventral spines and apical comb. Abdomen. Dmtg I–II separated from metanotum by a distinct suture; fused medially, with an ill-defined longitudinal carina, separated from each other submarginally; lateral portions with a moderately large, oblong transverse plate along anterior margin in front of a small, rounded callosity next to a submarginal slit and coarse granules (in part coalesced into oblique wrinkles). Tergal plate (dmtg III–VI) completely fused, with low carinae around apodemal markings. Dmtg IV–VI with an ill-defined plate around scent gland openings. The latter (or scars thereof) three in number, first moderately developed, displaced posteriorly on dmtg IV, second very small, third lacking. Connexivum. Dorsal laterotergites (dltg) with a pair of obscure or distinct, rounded, smooth apodemal spots, posterior one larger. Dltg II–III fused, subtriangular, extending forward to anterolateral angles of metanotum; IV–VII subrectangular. Spiracles II–IV ventral (not visible from above), V–VII lateral (visible from above). Posterolateral angles of vltg V–VII produced, visible from above (unproduced, not visible from above in other genera). Pattern of apodemal markings 2:1:1 (dorsal); 2:2:1 (ventral). Male genitalia. Pygophore trilobate ( Fig. 19 , posterodorsal view); dorsal lobes ear-shaped, strongly carinate along margins, depressed medially, swollen ventral portion of inner margin nearly touching swollen margin of opposite lobe; ventral lobe with narrowly rounded median convexity flanked by two carinae, moderately produced; dorsal opening narrow; paramere heads partially visible as rounded setose structures; posterior rim with short, anteriorly concave, angular projection on each side of median suture. Paratergites VIII ( Fig. 26–27 , dorsolateral view) with a broadly rounded head bearing a long ventral flange; spiracle apical.

Remarks. The genus Carventaptera is unique among New Zealand genera in possessing the following two morphological characters: presence of vestigial wing pads, appearing as small narrow plates fused to the thorax; posterolateral angles of ventral laterotergites (vltg) V–VII of connexivum produced and visible from above. Furthermore, the simple V-shaped backward projection of the mesonotal disc of Carventaptera lacks the anterolateral projections present in Neocarventus and Tuataraptera . Finally, the overall appearance of the male paratergites VIII is reminiscent of the situation seen in Leuraptera . The genus Carventaptera was previously known only from the type species ( C. spinifera ) which occurs on the South Island and in southernmost areas of the North Island. A new species from the North Island, C. hallae , is described here.

Figures

Figures 17–22. Male pygophore and paratergites VIII, posterodorsal. 17) Leuraptera. 18) Clavaptera. 19) Carventaptera. 20) Modicarventus. 21) Neocarventus. 22) Tuataraptera.

Figures 23–35.Male left paratergite VIII. 23) Lissaptera, outer lateral.24) Acaraptera, outer lateral.25) Leuraptera, outer lateral. 26) Carventaptera spinifera, dorsolateral. 27) C. hallae new species, dorsolateral. 28) Modicarventus, outer lateral. 29) Neocarventus, outer lateral.30) Tuataraptera, outer lateral. Right paramere, outer lateral. 31) Lissaptera completa. 32) L. heissi new species. 33) Acaraptera myersi. 34) A. waipouensis. 35) Leuraptera zealandica.

Figures 36–43. Male right paramere, inner lateral. 36) Carventaptera spinifera. 37) C. hallae new species. 38) Modicarventus kirmani new species. 39) Neocarventus angulatus. 40) N. potterae new species. 41) N. montanus new species. 42) N. northlandicus new species. 43) Tuataraptera unca.

Figures 56–59. Dorsal habitus. 56) Carventaptera spinifera, male. 57) C. spinifera, female. 58) C. hallae new species, male. 59) C. hallae new species, female. Scale line = 1 mm.

Figures 73–78. Species distribution maps. 73) Acaraptera myersi. 74) A. waipouensis. 75) Carventaptera hallae new species. 76) C. spinifera. 77) Clavaptera ornata. 78) Leuraptera zealandica.