Papuanecta, Tinerella, 2008

Tinerella, Paul P., 2008, Taxonomic revision and systematics of New Guinea and Oceania pygmy water boatmen (Hemiptera: Heteroptera: Corixoidea: Micronectidae), Zootaxa 1797 (1), pp. 1-66 : 8

Key to the species of Papuanecta gen. nov.

1. Male abdominal asymmetry sinistral; length 1.71–2.0 mm; male left and right parameres similar in shape ( Figs. 2h–k ); female with darkened embolium; two or three short striae present in apical third of corium .. ................................................................................................................................ P. sinistra (Chen) (pg. 9)

- Male abdominal asymmetry dextral; length 1.66–2.04 mm; male left and right parameres dissimilar in shape ( Figs. 6b–g , 10b–f , 14a–f ); females without darkened embolium; apical third of corium lacking striae..............................................................................................................................................................2

2. Length 1.87–1.98; male pala short ( Figs. 5c–d ); free lobe of abdominal tergite VIII broad, outer lower angle longer ( Fig. 5g ); right paramere of male long, twisted ( Fig. 6b–d, f–g ); left paramere tip with troughlike expansion ( Fig. 6e ) ...................................................................... P. inelryjenor sp. nov. (pg. 12)

- Length 1.66–2.04; male pala elongate ( Figs. 9c–d , 13c–d ); free lobe of abdominal tergite not as above ( Figs. 9g , 13g ); left paramere of male with hoodlike processes ( Figs. 10b–f , 14a–f )..................................3

3. Length 1.66–1.81; free lobe of abdominal tergite VIII quadrate, outer angle squared ( Fig. 9g , 10a ); right paramere base perpendicular to shaft, rectangular, shaft with basal constriction and medial portion expanded ( Figs. 10f–g ); left paramere apical processes flaplike, rounded, apex recurved and distinctly rounded ( Figs. 10b–f ); ........................................................ P. minajerwi (Tinerella and Polhemus) (pg. 17)

- Length 1.93–2.04; free lobe of abdominal tergite VIII broad, outer angle rounded ( Fig. 13g ); right paramere base angled, ovate, shaft without basal constriction, medial portion only slightly expanded ( Figs. 14c, e–f ); left paramere apical processes flangelike, triangular, apex acutely pointed ( Figs. 14a–f )... ................................................................................................................ P. minajerwioides sp. nov. (pg. 22)

Figures

FIGURE 2. Papuanecta sinistra (Chen). a. Prothoracic lobe, female. b. Metaxyphus. c. Left male foreleg, posterior aspect. d. Left male pala (tarsus), anterior aspect, palar claw folded in. e. Prestrigilar flap of abdominal segment V. f. Sternal process of abdominal segment VII. g. Free lobe of abdominal tergite VIII. h–i. Right paramere, opposite views. j– k. Left paramere, opposite views. Scale bars = 0.1 mm. (Figs. h–k redrawn, in part, from Chen 1965)

FIGURE 5. Papuanecta inelryjelnor sp. nov. a. Prothoracic lobe, female. b. Metaxyphus. c. Left male foreleg, posterior aspect. d. Left male pala (tarsus), anterior aspect, palar claw folded in. e. Prestrigilar flap of abdominal segment V. f. Sternal process of abdominal segment VII. g. Free lobe of abdominal tergite VIII. Scale bars = 0.1 mm.

FIGURE 6. Papuanecta inelryjelnor sp. nov., male terminalia. a. Free lobe of abdominal tergite VIII. b. Left paramere, lateral aspect, right paramere, dorso-frontal aspect. c. Left paramere, lateral aspect, right paramere, dorsal aspect. d. Left paramere, dorsolateral aspect (cf tip, Figs. b,c,e), right paramere, dorsal aspect. e. Left paramere, lateral aspect, opposing face (cf Fig. g). f. Left paramere, lateral aspect, right paramere, lateral aspect. g. Left paramere, dorsolateral aspect, opposing face, right paramere, dorsolateral aspect. h. Pars stridens processus, base of right paramere.

FIGURE 9. Papuanecta minajerwi (Tinerella and Polhemus). a. Prothoracic lobe, female. b. Metaxyphus. c. Left male foreleg, posterior aspect. d. Left male pala (tarsus), anterior aspect, palar claw folded in. e. Prestrigilar flap of abdominal segment V. f. Sternal process of abdominal segment VII. g. Free lobe of abdominal tergite VIII. Scale bars = 0.1 mm. (Figs. c, d, f modified from Tinerella and Polhemus 2005).

FIGURE 10. Papuanecta minajerwi (Tinerella and Polhemus), male terminalia. a. Free lobe of abdominal tergite VIII, apex. b. Left paramere, lateral aspect, right paramere, dorsal aspect. c. Left paramere, lateral aspect, right paramere, lateral aspect. d. Left paramere, lateral aspect, right paramere lateral aspect. e. Left paramere, dorsolateral aspect, right paramere dorsal aspect. f. Left paramere, lateroventral aspect, right paramere lateral aspect. g. Pars stridens processus, base of right paramere. (Modified from Tinerella and Polhemus 2005).

FIGURE 13. Papuanecta minajerwioides sp. nov. a. Prothoracic lobe, female. b. Metaxyphus. c. Left male foreleg, posterior aspect. d. Left male pala (tarsus), anterior aspect, palar claw folded in. e. Prestrigilar flap of abdominal segment V. f. Sternal process of abdominal segment VII. g. Free lobe of abdominal tergite VIII. Scale bars = 0.1 mm.

FIGURE 14. Papuanecta minajerwioides sp. nov., male genitalia. a. Left paramere, lateral aspect, right paramere, dorsolateral aspect. b. Left paramere, lateroventral aspect, right paramere, lateroventral aspect. c. Left paramere, lateroventral aspect, right paramere, lateral aspect. d. Left paramere, ventral aspect of tip. e. Left paramere, lateroventral aspect, right paramere, lateral aspect. f. Left paramere, ventral aspect, right paramere, dorsolateral aspect. g. Pars stridens processus, base of right paramere.