Hydrometra argentina Berg, 1879

Canejo, Rafael P. R., Melo, Alan Lane De & Rodrigues, Higor D. D., 2023, Gerromorpha (Insecta: Hemiptera: Heteroptera) from the state of Rio Grande do Norte, northeastern Brazil, including a new synonymy, Zootaxa 5357 (2), pp. 151-185 : 172

Hydrometra argentina Berg, 1879

( Figs. 12B , 13A–F )

Hydrometra argentina Berg, 1879: 182 (original description).

Identification. Our specimens were identified based on the body length less than 12 mm; the clypeus narrow and conical, with the anterior margin not excavated ( Fig. 13B ); the lateral surface of the pro- and mesoacetabula with at most three circular pits each ( Fig. 13D ); and male abdominal sternum VII with a pair of spinose projections near the anterior margin ( Figs. 13E–F ) ( Moreira & Barbosa 2013; Martínez et al. 2019).

Examined material. BRAZIL, Rio Grande do Norte: Ceará-Mirim, Rio Ceará-Mirim, 5°37’50.4”S, 35°25’16.9”W, 21-IX-2019, R.P. R. Canejo, A.L. Melo leg. (2♀ macropterous CEAAVF) ; Itajá, açude em Itajá , 5°43’36.0”S, 36°46’20.9”W, 02-X-2020, R.P. R. Canejo leg. (1♀ brachypterous CEAAVF) ; Natal , UFRN, espelho d’água da reitoria, 5°50’21.8”S, 35°12’04.7”W, 05-III-2020, R.P. R. Canejo leg. (1♀ macropterous CEAAVF) ; Macaíba, Riacho do Sangue , 5°51’58.5”S, 35°21’46.1”W, 24-XI-2019, R.P. R. Canejo leg. (1♂ brachypterous CEAAVF) ; Poço Branco, Rio Ceará-Mirim - Represa , 5°38’00.5”S, 35°39’11.0”W, 21-IX-2019, R.P. R. Canejo, A.L. Melo leg. (2♀ macropterous CEAAVF) ; Santana do Matos, Açude Alecrim , 5°57’51.3”S, 36°39’26.0”W, 28- XI-2019, R.P. R. Canejo leg. (1♀ brachypterous CEAAVF) ; Serra Negra do Norte, ESEC - Seridó, Casa da Entrada , [coordenates unknown], 20/ 21-VIII-1999, A.A. Varela-Freire leg. (2♀ macropterous CEAAVF) ; Serra Negra do Norte, Rio Espinharas , 26-IX-2019, A.L. Melo leg. (1♂ macropterous DPIC) ; Touros , Lagoa do Jiqui 02-XI-2018, R.P. R. Canejo, A.L. Melo leg. (1♂ brachypterous DPIC) .

Figures

FIGURE 12. (A–B) Distribution records for species of Gerromorpha in state of Rio Grande do Norte, northeastern Brazil.

FIGURE 13. Gerromorpha from state of Rio Grande do Norte. (A–F) Hydrometra argentina, (A) dorsal view of head, (B) anterior portion of head in dorsal view, (C) dorsal view of pronotum, (D) lateral view of thorax, (E) lateral and (F) ventral views of male abdomen apex, white arrows indicate pair of basal spinose projections of sternum VII. (G–H) Lipogomphus lacuniferus, (G) dorsal and (H) ventral views of macropterous female. cly = clypeus. Scale bars = 1.00 mm.