Prolatucoris mandibulatus, Barros & Brugnera & Barão & Grazia, 2020

Barros, Lurdiana Dayse de, Brugnera, Ricardo, Barão, Kim Ribeiro & Grazia, Jocelia, 2020, The genus Parahypatropis Grazia & amp; Fernandes, with description of two new species and description of a new similar monotypic genus (Hemiptera: Pentatomidae), Journal of Natural History (J. Nat. Hist.) 54 (15 - 16), pp. 1045-1071 : 1065-1069

Prolatucoris mandibulatus sp. nov. Barros, Brugnera and Grazia

( Figures 13 (a ‒ c), 14(a ‒ f), 15(a ‒ c), 16(a–f), 17(a–d), 18)

Type material. HOLOTYPE, 1#f, BRAZIL [Rio Grande do Sul], [Caxias do Sul], Vila Oliva , 11 January 1961, (7429), Pe. Buck leg. ( MCNZ) . PARATYPES, 1#f, same date as holotype <Illustrated female> ( UFRG) ; 1#m, BRAZIL, São Francisco de Paula, ′ Barragem P. Inferno ̍, 19 November 1997, Col. MCN, 53,354, E.H. Buckup leg. <Illustrated male> ( UFRG) ; 2#m, São Francisco de Paula, Pró-Mata, Trilha das bananeiras , 17 October 2018, R.A. Teixeira leg. ( UFRG), ( MCNZ); idem, 1#f ( MCTP), 1#m, immature <illustrated nymph> ( UFRG) .

Description. General colour light brown dorsally and brown ventrally; punctures spaced and deep, dark brown punctures sometimes forming stripes; antennomeres brownish. Coxae with dark brown blotches; femora and tibiae light brown with dark brown punctures; tarsi light brown. Body small and elongated, convex ventrally ( Figure 13 (a ‒ c)). Head. Head slightly wider than long. Mandibular plates long than clypeus, obtuse apically. Proportions of antennomeres I> II <III> IV <V. Bucculae straight. Short labium, not reaching mesocoxae; proportions of labial segments I <II> III ~ IV ( Figure 13 (b)). Thorax. Humeral angles of pronotum obsolete; anterolateral margin of pronotum slightly concave ( Figure 13 (a)). Scutellum not reaching segment V apically; scutellum slightly acute apically; hemelytral membrane not reaching apex of abdominal segment VII, with linear veins, some bifurcated basally; mesosternal carina slightly elevated, smooth and setose. External scent efferent system, abdomen, spiracles, shape of connexivum and trichobothria as described for the genus. Measurements in Table 1 .

Male genitalia. Pygophore quadrangular ( Figure 14 (a ‒ f)). Posterolateral angles rounded. Genital cup occupying more than half of pygophore length. Dorsal rim of pygophore medially entire with 1 + 1 dorsal process; extension of dorsal rim over segment X obsolete. Superior layer of ventral rim without processes; lateral margin of projection of superior layer of ventral rim entire ( Figure 14 (c ‒ d)). Inferior layer of ventral rim without processes ( Figure 14 (e ‒ f)). Segment X ogival ( Figure 14 (a–b)). Phallus ( Figure 15 (a ‒ c)): Dorsal connectives (dc) longer, not surpassing half the length of phallotheca. Processus capitati short, not reaching distal margin of phallotheca. Phallotheca piriform, longer than its width apically, with 1 + 1 dorsal process of phallotheca, wider basally than apically; and three pairs of projections: 1 + 1 ventrobasal; 1 + 1 in posterodorsal margin, as long as dorsal processes of phallotheca; and 1 + 1 in posterolateral margin, rounded. Conjunctiva with two pairs of processes and two pairs of lobes: median and ventral lobes, entirely membranous. Process of vesica long. Ductus seminis distalis long.

Female genitalia. Gonocoxites VIII (gc8) flat, at least twice as long as laterotergites IX, partially covering gonocoxites IX; posterior margin straight. Laterotergites VIII (la8) with posterior margin straight ( Figure 16 (a ‒ b)). Gonocoxites IX (gc9) swollen, with anterior margin convex and posterior margin straight ( Figure 16 (c ‒ d)). Gonapophyses IX (g9) with 1 + 1 lateral sclerotised areas placed along with chitinellipsen. Chitinellipsen (ch) elliptical, at least four times smaller than the size of each sclerotised area. Laterotergites IX (la9) spatulate, obtusely projected apically. Ectodermal ductus ( Figure 16 (e ‒ f)): anterior part of thickening of vaginal intima (tvi) as long as posterior portion of tvi. Proximal ductus receptaculi (pdr) convoluted, short in relation to length of vesicular area; diameter of proximal ductus receptaculi larger than internal wall of vesicular area. Median wall of vesicular area enlarged sub-proximally. Distal ductus receptaculi (ddr) straight, short, its diameter equal to the diameter of median wall of vesicular area. Vesicular area (va) short, occupying half the length of the ductus receptaculi. Annular flanges divergent. Anterior annular flange (aaf) developed. Posterior annular flange (paf) thinner than capsula seminalis. Pars intermedialis (pi) rectilinear. Capsula seminalis (cs) globose and larger than pars intermedialis.

Fifth instar. Body pale yellow, punctures dark brown, red spots on dorsal surface and ventral abdomen ( Figure 17 (a ‒ b)); apex of femur and tibiae with dark brown spots; last antennal segment dark brown; spiracles dark brown; basal trichobothria pale brown. Body oval, dorsoventrally flattened; densely punctured dorsally, and ventrally with punctures concentrated on lateral margins of pleuron, close to bucculae on head and sparsely on abdomen; antennae, labium, legs, lateral margin of abdomen, and median portion of posterior margin of each of II–VIII ventral abdominal segments with setae. Head longer than wide; mandibular plates distinctly surpassing clypeus; anteocular process developed; proportions of antennomeres I <II> III <IV; proportions of labial segments I <II> III = V; apex of labium reaching halfway between pro- and mesocoxae. Lateral margins of pronotum expanded and serrated, distinctly surpassing lateral margins of eyes; wing pads almost reaching posterior margins of abdominal segment III ( Figure 17 (a)); abdominal plates concolorous with abdomen ( Figure 17 (c)); first pair of dorsal abdominal glands ( DAG 1) located between III and VI segments, second pair ( DAG 2) between VI and V segments, and third pair ( DAG 3) located between segments V and VII; DAG 2 and DAG 3 elevated ( Figure 17 (d)).

Etymology. mandibulatus refers to the mandibular plates being longer than the clypeus.

Distribution. Rio Grande do Sul, Brazil ( Figure 18).

Additional material examined. Amauromelpia ussu Fernandes and Grazia, 1998 : HOLOTYPE, 1 m #, BRAZIL, Amazonas, Janauacá , 29 July 1978, W. Benson leg. ( DZUP) ; PARATYPES, 1 m #, 1 f #, same date as holotype ( UFRG) . Hypatropis sternalis (Stål, 1869) : HOLOTYPE, 1 m #, ARGENTINA, La Plata, ′Stål, Typus̍ ( NHRS), examined photograph ; 1 f #, BRAZIL, Rio Grande do Sul, Pelotas, 20 October 1975, Glória leg., Hypatropis sternalis (Stål, 1869) , Fernandes, J. 1993 ( UFRG) . Pedinonotus catarinensis Fernandes and Grazia, 2002 : HOLOTYPE, 1 m #, BRAZIL, Santa Catarina, Nova Teotônia, Seara , -27.0500°S, -52.400°L [27° 11̍S 52°23 ʹ L], December 1939, Fritz Plaumann leg. ( AMNH) ; PARATYPES, 1 m #, 1 f #, same date as holotype ( UFRG) .