Papuanecta minajerwioides 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 : 22-26

publication ID	https://doi.org/ 10.11646/zootaxa.1797.1.1
persistent identifier	https://treatment.plazi.org/id/127787F4-FFB3-4169-FF61-F1C3FD5C5888
treatment provided by	Felipe
scientific name	Papuanecta minajerwioides Tinerella
status	sp. nov.

Treatment

Papuanecta minajerwioides Tinerella View in CoL , sp. nov.

( Figs. 1g –h View FIGURE 1 , 12–15 View FIGURE 12 View FIGURE 13 View FIGURE 14 View FIGURE 15 )

Diagnosis: Similar in habitus to other Papuanecta , and to P.minajerwi on the basis of the male genitalia. Distinguished from all other Papuanecta by the male parameres ( Figs. 14a–g View FIGURE 14 ) and combination of prothoracic lobe ( Fig. 13a View FIGURE 13 ) and metaxyphus ( Fig. 13b View FIGURE 13 ) for females.

Size: ( Table 5). Macropterous form. 1.93–2.04. Brachypterous form unknown.

L= length, LP= length of pronotum, W= body width, WH= width of head, S= synthlipsis, WE= width of eye, WP= width of pronotum, L:W= ratio body length to width, S:E= ratio of synthlipsis to eye width, OcI= ocular index.

Derivation of specific epithet: minajerwioides , a combination of minajerwi , the specific name of P. minajerwi , and the Latin -oides, noting the similarity of the former with the latter.

Notes on type material: Holotype (♂): ( Fig. 12a–c View FIGURE 12 ) INDONESIA: Irian Jaya Prov. [= Papua Prov.]: West New Guinea: Vogelkop : Kebar Val. W of Manokwari, 550m. (4–31)- I-1962. Sweeping. S. & L. Quate. [ BPBM 16,840 View Materials ] . Paratypes: INDONESIA: Irian Jaya Prov. [= Papua Prov.]: West New Guinea: Vogelkop: Kebar Val. W of Manokwari, 550m. (4–31) - I-1962. Sweeping. S. & L. Quate. (5♂♂, 2♀♀). [ BPBM]; INDO- NESIA : Irian Jaya Prov. [= Papua Prov.]: West New Guinea: Central Mts., Archbold Lake , 760m. (26-XI)-(3- XII) - 1961. Light Trap. S. & L. Quate. (1♂, 1♀). [ BPBM] ; PAPUA NEW GUINEA: SE: Kokada , 400m. (15– 20) - XI-1965. Light Trap. J. & M. Sedlacek. (5♂♂, 5♀♀). [ BPBM] .

Description: Based on macropterous form. Measurements. Length: male 1.97–2.04; female 1.93–2.04; Width: male 0.91–0.97; female 0.93–0.98; Width of head: male 0.69–0.73; female 0.71–0.74; Synthlipsis: male 0.27–0.31; female 0.29–0.31; Width of eye: male 0.18–0.22; female 0.22–0.25; Width of pronotum: male 0.75–0.77; female 0.75–0.79; Length of pronotum: male 0.29–0.31; female 0.29–0.54.

Color. Ground color dark brown ( Figs. 1g –h View FIGURE 1 ). Head paler yellow, eyes dark brown to black. Clypeus light brown. Labium black. Vertex with dark brown medial area, lateral and upper margins lighter. Genae darker brown, punctate. Antennae lighter brown. Pronotum dark brown, with narrow pale band along apical margin. Clavus brown with basal diagonal band generally indistinct, when band developed, area is pale brown to reddish-ochre in color. Medial and apical portion of clavus same brownish color as in corium and membrane. Claval-corial commisure with narrow, pale band spanning entire length, often margined by narrow dark band. Corium solid brown, with small reddish spots laterally. Scutellum dark reddish brown, paler along basal margin. Prenodal embolar area reddish brown in basal half, infuscated apically and lacking pruinosity. Left membrane in both sexes subhyaline, brownish, with inner margin paler, right membrane coriaceous, brown. Venter of males darkened, legs darker brown apically. Female venter paler, legs same color. Distal portion of meso- and metatarsi embrowned. Natatorial setae darker than leg segments.

Structural characteristics. Ratio of body length/width: males 2.11; females 2.06. Head narrower than pronotum, interocular space greater than width of eye, synthlipsis 1.3 times as wide as posterior width of eye. Ocular index: males 1.34; females 1.39. General facies of head (vertex frons, labium) reduced, very short. Antennae densely pilose, segments one and two very short, segment three longer, elliptical, apex acuminate. Pronotum very large, convex, widest at middle, lateral margins subquadrate, about 2.3 times as wide as long (W/L males 0.77/0.32; females 0.77/0.36). Prothoracic lobe compact, setose, anterior margin broadly rounded, posterior margin nearly squared ( Fig. 13a View FIGURE 13 ). Hemelytra with fine reticulate microsculpturing, trending transverse. Nodal furrow present, marked by a diagonal suture not reaching wing margin. Prenodal embolar area well developed, wide, postnodal embolar area narrowed, triangular. Short, minute setae evenly distributed over clavus, corium, and right membrane. Metathoracic wings well developed, reaching apices of hemelytra. Lateral spines and setae on abdominal segments IV–VIII: IV: one short, stout spine, one long, thin seta; V: two short, stout spines, one long, stout spine; VI: two short, stout spines, two long, stout spine; VII: two short, stout spines, two long, stout spines; VIII: five short, stout spines, one long, stout spine. Metaxyphus of both sexes short, triangular, with apex produced and narrowly rounded; setae absent ( Fig. 13b View FIGURE 13 ). Male foreleg ( Fig. 13c View FIGURE 13 ): femur with two short stout spines in basal third near ventral surface. Tibia with one long, thin seta placed lateroventrally, towards apical portion. Pala with dorsal setae absent, palmar area with about seven setae in dorsal row and 12–14 setae in lower row, lower row setae more pronounced than those of dorsal row. Apex of pala with single short, thickened seta. Palar claw ( Fig. 13d View FIGURE 13 ) narrow, parallel-sided and broadened proximad, narrowing distally, with slightly curved distal lower margin. Female foreleg with same general setal arrangement as male. Mesotarsal claws short, about one-half length of mesotarsus.

Lateral lobes of abdominal tergum IV short, rounded, right lobe slightly longer than left. Right lobe with about 12 long setae and left lobe with about 15 long setae, more or less evenly spaced. Prestrigilar flap of abdominal tergum V compact, nearly square, lower margin rounded ( Fig. 13e View FIGURE 13 ). Strigil indistinct, narrowed, elongate, rectangular in outline. Median lobe of abdominal sternum VII ( Fig. 13f View FIGURE 13 ) short, apex sharply acuminate, setae restricted to mediobasal portion and consisting of numerous short and long hairs. Free lobe of abdominal tergite VIII ( Fig. 13g View FIGURE 13 ) broad, outer margin rounded, lower margin nearly square, setae dispersed along inner and lower margins, numbering about 16. Upper angle spines absent; darkened areas reduced, scattered, few. Pars stridens processus cleaner ridges of abdominal segment VIII not discernible with light microscopy. Left paramere ( Figs. 14a–f View FIGURE 14 ) shorter, shaft slightly curved outward, tip broadened with hoodlike processes laterally. Paramere base long, rounded. Right paramere ( Figs. 14a–c, e–f View FIGURE 14 ) long, curved laterally, constricted towards base; tip flattened, rounded. Base of right paramere long, rectangular, rotated towards shaft ( Fig. 14g View FIGURE 14 ), with about 35 confined plectral ribs, spanning medial to rear lateral margin. Aedeagus narrowed ( Figs. 14a–f View FIGURE 14 ).

Distribution and habitat: ( Fig. 15 View FIGURE 15 ). The disjunct distribution across New Guinea suggests this species is wide ranging, north of the central dividing range. All specimens were taken at lights or by sweeping. No further habitat or ecological data are available.

Discussion: This species is closely related to P. minajerwi . Similarities of the two species and notes on characters are discussed under P.minajerwi .