Corixidea quaresmai, Carvalho-Filho & Albuquerque, 2021

Carvalho-Filho, Fernando da Silva & Albuquerque, Flavio, 2021, Description of a new species of Corixidea from Brazil (Heteroptera: Dipsocoromorpha: Schizopteridae), Iheringia, Série Zoologia (e 2021010) 111, pp. 1-6 : 2

Corixidea quaresmai sp. nov.

( Figs 5–10 )

http://zoobank.org/ urn:lsid:zoobank.org:act:C3901BBC-981F-4F7F-A865-7C6F2EB10DE1

Type material. Holotype ♂, BRAZIL, Ceará: Pacatuba (Reserva Particular do Patrimônio Natural ( RPPN) Monte Alegre , 3°56ʼ04.7ˮS, 38°36ʼ40.9ˮW), Carvalho-Filho & Albuquerque col. ( MPEG) ; Paratypes, 3♂, same data as holotype ( MPEG) .

Measurements: Male holotype. Total length: 1.23 mm; interocular distance: 0.33 mm; pronotum length: 0.19 mm; pronotum width: 0.57 mm; scutellum length: 0.17 mm; abdominal width: 0.53 mm.

Diagnosis. Distinguished from known Corixidea species in having distal extension of anophoric process parallel and close to the left lateral margin of tergites and elongated process of tergum 8 with distal half pectinate and with a filiform tip ( Fig. 8 ).

Description. Male ( Figs 5–7 ): macropterous, body ovoid. Coloration: general coloration brown, antenna and legs uniformly yellow, abdomen brown. Surface and vestiture: head, pronotum and wing veins with medium-length light brown setae, abdomen densely covered with long, light brown setae, wing cells with distinct cell-like sculpture. Structure: Head: slightly declivent in lateral view, ellipsoid in ventral view, width of eye about 1/3 width of synthlipsis, ocellus about same size to one ommatidium, close to margin of compound eye. Thorax: pronotum trapezoidal, with posterior margin slightly curved posteriorly, scutellum triangular, with rounded tip, metepisternum with posterior margin rounded, blunt metasternal process widened apically, hind coxa with well-developed adhesive pad, tarsal formula 3-3-3, pretarsus with setiform parempodia, arolia present on fore- and midleg. Abdomen. Six visible sterna corresponding to segments 2+3, 4, 5, 6, 7, and pygophore, equally sclerotized ( Fig. 9 ). Sternum 2 wider than other sterna ( Fig. 9 ). Sternum 7 rectangular and slightly asymmetrical ( Fig. 9 ). Mediotergite 8 asymmetrical, with process insertion on left side ( Figs 8, 10 ). Process of mediotergite 8 (mt8p) elongated, with widened basal portion perpendicular to distal portion; distal portion elongated with a row of comb-like spines and a filiform projection curved anteriorly ( Figs 8, 10 ). Genitalia ( Figs 8–10 ). Pygophore (pyg) slightly asymmetrical, almost triangular, with rounded apex. Right paramere (rp) elongated, with pointed tip bearing a small pointed projection and a rounded pre-apical process covered with a tuft of small light setae. Left paramere (lp) short and plate-like, about as long as wide. Vesica (v) coiled, tubular and thin, tapering apically, without processes. Anophore (ano) dorsally flattened, tapering distally, and directed to the right lateral margin.Anophoric process (anop) very long, with rounded apex reaching mediotergite 4 and distal extension parallel to left margin of tergites, slightly arched with a row of light setae on left margin.

Etymology. Named in honor of Luís Augusto Quaresma (in memoriam) for his friendship and support with specimens collection. Quaresma passed away in January 2021 but he will always be remembered for his joy, charisma, and happiness.

Distribution ( Fig. 1 ). Brazil (Ceará).

Figures

Figs 5–7. Corixidea quaresmai sp. nov., habitus of male holotYpe: 5, dorsal; 6, ventral; 7, lateral. Scale bars: 0.5 mm.

Figs 8–10. Corixidea quaresmai sp. nov., abdomen of male holotYpe: 8, dorsal; 9, ventral; 10, dorsal (ano, anophore; anop, anophoric process; lp, left paramere; rp, right paramere; mt8, mediotergite 8; mt8p, mediotergite 8 process; pY, pYgophore; v, vesica). Scale bars: Figs 8, 10, 0.2 mm; Fig. 9, 0.1 mm.

Figs 1–4. StudY area:1, satellite image of South America; greY square shows the area where the studY area is located; 2, detail of forest where the tYpespecimens were collected; 3, satellite image of region highlighted with a greY square in figure 1, greY arrow shows the mountainous region where the specimens were collected; 4, satellite image of the mountainous region, greY arrow shows the sampled site. Scale bars: Fig. 3 = 5 km, Fig. 4 = 500 m.