Neolargulus excavatus, Stehlík & Brailovsky, 2011

Stehlík, Jaroslav L. & Brailovsky, Harry, 2011, Two new genera of the tribe Largulini (Hemiptera: Heteroptera: Largidae) from Greater Antilles, Acta Entomologica Musei Nationalis Pragae 51 (2), pp. 449-456 : 452

Neolargulus excavatus sp. nov.

( Figs. 2 –4, 7–8, 16)

Type material. HOLOTYPE: J, ‘ DOMINICAN REPUBLIC: / La Vega Prov.: 4 km E. of La / Cienaga, Manabao , 3050 ft., / Papagayo , elev. 150 ft, 19° / 04′47″ N 70°49′29″ W, 4–8 / April 2000, T. J. Henry & R. E. / Woodruff’ [printed, white label] // ‘ USNM DRAKE / COLLECTION / June 2000 ’ [printed, white label] // ‘HOLOTIPO’ [printed, red label with black rectangle] // ‘ Neolargus / excavatus / gen. et sp. nov. / STEHLÍK & BRAILOVSKY det.’ [red label] ( USNM) . PARATYPES: 2 JJ 1 ♀, same data as holotype ( USNM, UNAM, MMBC). Note. The dates on the locality label are incorrect. They should be 19–22 April 2000 not 4–8 April 2000 ( T. J. Henry, pers. comm.).

Description. Colouration. Head, antennomeres 1–3, labium, pronotal collar, callar lobe, scutellum (except its apex), median spot and apex of corium, membrane, body venter, metathoracic scent gland peritreme, and legs black. Antennomere 4 dark brown. Lateral margin of pronotum, pronotal lobe, pronotal epipleuron, dorsal part of pleural flange I, apex of scutellum, and posterior margins of ventral laterotergites red. Clavus and corium orange, corium with creamy yellow marks. Abdominal dorsum in male with mediotergites III–IV shiny, mediotergites V–VI black with lateral and posterior margins shiny orange, mediotergite VII in anterior half black, in posterior half orange; in female mediotergites III–VI orange, mediotergites VIII and IX black with dorsal margin dark orange; paratergite VIII and IX dark orange with inner margin black.

Structure. See generic description.

Punctation. Head shiny, impunctate. Pronotal collar, pronotal lobe (except its posterior margin), scutellum (except its apex), clavus and corium towards the posterior margin of the median spot with coarse, distinct black punctures. Callar lobe, anterolateral and posterior margins of pronotum, hypocostal lamina, corium between the posterior margin of the median spot and apex and also narrowly along the costal margin, thorax, and abdomen impunctate.

Pubescence. Head, pronotal collar, callar lobe, and scutellum (except its apex) with distinct silvery pubescence; pubescence on pronotal lobe, clavus, and corium (up to posterior margin of median spot), and femora less prominent and sparser. In addition to short silvery pubescence, head dorsally and pronotum covered with erect, black setae (most easily visible in lateral view – Fig. 4). Body venter with distinct, short, silvery pubescence, particularly prominent along intersegmental sulci between ventrites.

Measurements (J holotype / ♀; in mm). Body length: 7.40 / 10.11; head: width (including eyes) 1.43 / 1.54, interocular width 0.92 / 0.97; lengths of antennomeres: 1 – 1.24 / 1.51, 2 – 1.03 / 0.97, 3 – 0.65 / 0.65, 4 – 1.46 / 1.54; pronotum: length 1.70 / 2.05, width – 2.23 / 2.92; scutellum: length 1.03 / 1.40, width 1.24 / 1.67; corium: length 3.67 / 4.32, width 1.08 / 1.35.

Variation. Fore femur with one large acute subapical spine (holotype) or with two subapical spines, one elongate and acute, the other one short and robust.

Etymology. The species epithet is the Latin adjective excavatus , - a, - um, meaning excavated, deepened, referring to the U-shaped incised ventral wall of the pygophore.

Collection circumstances. Black lighted near river, pine mountain/hillside across stream, miscellaneous cultivated crops (including coffee) and natural vegetation along river and around cabin (T. J. Henry, pers. comm.).

Distribution. Known only from the Dominican Republic (Greater Antilles).

Figures

Figs. 1–2. 1 – Neolargulus excavatus gen. & sp. nov., holotype, male (Orig. A. Luna); 2 – Paralargulus refulgens (Brailovsky & Barrera, 2008), male, holotype (Orig. J. Contreras; from BRAILOVSKY & BARRERA 2008).