Limnocoris inornatus Montandon, 1898: 423–424 Champion 1901: 359 Torre-Bueno 1906: 52 Kirkaldy & Torre-Bueno 1909: 183 La Rivers 1971: 75 Herrera 2013: 227 Revision of Limnocoris (Heteroptera: Nepomorpha: Naucoridae) of North America Rodrigues, Higor D. D. Sites, Robert W. Zootaxa 2019 2019-07-09 4629 4 451 497 6QBMW Montandon Montandon [151,569,1413,1439] Insecta Naucoridae Limnocoris Animalia Hemiptera 11 462 Arthropoda species inornatus  ( Figs. 1B, 2C, 5, 6E–F, 20A)    Limnocoris inornatus Montandon, 1898: 423–424(original description).    Limnocoris inornatus:  Champion 1901: 359(commented catalog);  Torre-Bueno 1906: 52(catalog);  Kirkaldy & Torre-Bueno 1909: 183(catalog);  La Rivers 1971: 75(catalog);   Herrera2013: 227(catalog); Nieser & López-Ruf 2001: 318–319(catalog).   Diagnosis.The distal margin of the labrum is distinctly acuminate ( Fig. 5C). The mesosternal carina lateral margins of the fossa touch each other along midline, leaving only a small aperture at the posterior end ( Fig. 5C). The dorsal surface of the body is usually medium brown to dark brown, without a pale medial spot in the hemelytral membrane ( Fig. 5A).   Measurements(n = 5 males/ 5 females). Body length 6.80–7.10/ 7.30–7.51, body width 5.10–5.25/ 5.25–5.50, synthilipsis 1.10–1.15/ 1.12–1.20, head length 1.10–1.20/ 1.10–1.20, head width 2.40–2.42/ 2.40–2.50, pronotum length on midline 1.40/ 1.45–1.50, pronotum width 4.50/ 4.51–4.70, scutellum length 1.10/ 1.10–1.20, scutellum width 2.40–2.50/ 2.30–2.50, hemelytra length 5.20–5.30/ 5.45–5.55.  Supplemental description.Maxillary plate tumescent anteriorly. Antenna not exceeding lateral margin of eye; pedicel quadrate; flagellomeres slender, not partially fused, with long setae. Propleura with pubescent area distinctly extended posteriorly along lateral margin; posterior margin convex medially ( Fig. 1B); posteromesal corner near prosternellum deflexed ventrally. Region between mesobasisternum and mesoepisternum with longitudinal row of elongate golden setae ( Fig. 5B, C). Metasternal carina with fossa rounded, slightly depressed medially; posterior margin excavated in lateral view ( Fig. 5E). Lateral margin of abdomen with minute serration; posterolateral corners of II–V narrowly rounded to right angled, not spinose; sterna with elongate golden setae generally dispersed, concentrated next to midline of segments III–V; sternum II with sinuous row of golden setae. Male: mediotergite VI with accessory genitalic process poorly developed; small notch on left side; posterior margin of mediotergite VII convex, with slight concavity medially; laterotergite VII with lateral and mesal margins subparallel ( Fig. 6E); lateral lobe of tergum VIII straight in anterior half of lateral margin; left medial lobe slightly directed laterally at apex, distal margin rounded; right medial lobe twisted in distal third ( Fig. 6F). Female: lateral margins of subgenital plate with tuft of elongate setae at mid-length ( Fig. 5D), posterior margin ranging from broadly rounded to narrowly acuminate; laterosternite VII with posterolateral corner slightly produced posteriorly.   FIGURE 5.  Limnocoris inornatusMontandon.(A) Dorsal habitus and (B) ventral habitus of female, hindwing macropterous (UMC), (C) ventral view of head and part of thorax, (D) terminal abdominal sterna of female, and (E) lateral view of meso- and metasternal carinae. Size bar = 1.00 mm and applies only to Figs. A–B.   FIGURE 6.Structures of male terminalia. (A, C, E) 6th and 7th abdominal terga, (B, D, F) 8th abdominal tergum. (A–B)  Limnocoris chaetocarinatus  n. sp., (C–D)  L. hintoni, and (E–F)  L. inornatus. agp = accessory genitalic process, ll = lateral lobe, lml = left medial lobe, ltr = lateral lobe of tergum VI (delimited by dotted line), ml = medial lobe, rml = right medial lobe, snt = small notch.  Comparative notes.This species is morphologically similar to  L. pygmaeus, where both species share the general morphology of the body, including the labrum, mesosternal carina, and female subgenital plate. The propleura pubescent area also is distinctly extended posteriorly along the lateral margin. Further, in  L. inornatus,the body color is usually brown to dark brown, and the hemelytral membrane does not have a single, large, pale medial spot, whereas in  L. pygmaeusthe body color is usually light brown to yellowish, and the hemelytral membrane has a pale medial spot.   Distribution. Montandon (1898)mentioned only “ Guatemala” for the typelocality. Subsequently, Champion (1901)also recorded this species from Guatemala, from a locality named “Paso Antonio.” Our searches to pinpoint this locality were not successful. However, it is possible that this locality was a farm in the Department of Escuintla, southwestern Guatemala. In the present study, we record  L. inornatusfor the first time in Mexico( Chiapas, Nayarit, Oaxaca, and Sonorastates), as well as provide detailed records in Guatemala( Baja Verapaz, El Progreso, Jutiapa, and Zacapadepartments) ( Fig. 20A).  Published records. Guatemala( Montandon 1898, Champion 1901).   Type material examined.  HOLOTYPE ♀brachypterous, GUATEMALA, Alte Sammlung, A.L. Montandon vend.  10.V.1907, Box Nr.HET 51 ( ZMUH).  Additional material examined.   GUATEMALA, Baja Verapaz, 24 Km N Salama,  24.Mar.1946, R.R. Miller( 1♂, 2♀, all macropterous, USNM); same data, except 20 Km Salama( 3♂macropterous, USNM).   El Progresso, El Progresso/ Zacapa Dpts.border, Rt.RD-1, Tambor River, 5.  June 2011, 14°55.763’N, 89°49.092’W,  284 m, R.S. Zackcollector ( 1♂, 1♀, all macropterous, UMC; 1♂, 1♀, all macropterous, 4 nymphs, WSU); 8 KmNE of Pro- gresso,  28.April.1946, R.R. Miller( 1♂macropterous, USNM).   Jutiapa, 20 Km W of Jutiapa,  13.March.1946, R.R. Miller( 1♂, 1♀, all macropterous, USNM).   Zacapa, nr Aldea El Arenal, Rio San Diego, 14.85968”N, 89.74773”W, shallow, still area on river,  22.II.2015, R.S. Zack( 3♂, 1♀, all macropterous, UMC).   MEXICO, Chiapas, Km238, between Huixtla& Mapastepec, L-1353, 16 m, 15°10’47.4”N/ 92°32’50.7”W,  20.V.2012, D. Reynoso-Velasco( 1♂, 1♀, macropterous, UMC);  Rio Huixtlaat Huixtla,  31 March 2015, L-1899, colls. Reynoso-Velasco, Sitesand Shepard,  64 m, 15°8.999'N, 92°27.077'W, gravel and rocks ( 4♂, 1♀, all macropterous, UMC); same locality ex- cept  1 April 2015, L-1901 ( 6♀, UMC; 1♀, MZUSP—all macropterous);  Chapingo Dos, Rio Vado Anchoat Puente Vado Ancho, 15º14'15.8"N, 92º36'2.2 W",  57 m,  1 April 2015, Sites& Reynoso-Velasco, cobble & filamentous algae, L-1902 ( 1♂, MZUSP; 3♀, UMC—all macropterous).   Nayarit, Los Sabinos, Mpio Del Nayar,  10.IV.1991, E. Barrera& J. Leon ( 1♂, 1♀, all macropterous, UMC).   Oaxaca, Juchitan, 17 milesE. Oaxaca, Slesnickfield n° 40,  08.VII.1953, Univ. Kansas Mexicanexpedition ( 2 males, 3♀, all macropterous, UMC).   Sonora, Mpio. Quiriego, Tepahui, L-  1687, 26.December.2013, elev. 137, 27°23’27.3”N/ 109°11’03.6”W, D. Reynoso-Velasco( 1♂, 1♀, all macropterous, UMC).   NICARAGUA, Atlántico Norte, Tuburus, Miskito Indian Tasbaika, Rio Geo, 22-23  May 2003, 14°16’36”N/ 85°10’40”W, coll. G. Camilo( 1♂ UMC). 2273889390 1907-05-10 ZMUH Alte Sammlung, A. L & Box Nr. Guatemala GUATEMALA 14 465 1 1 holotype 2273889458 1946-03-24 USNM Km N Salama & R. R. Miller Guatemala Baja Verapaz 14 465 3 2 1 Baja Verapaz 2273889365 [569,1267,728,755] 1946-03-24 USNM Km Salama Guatemala Baja Verapaz 14 465 3 3 Baja Verapaz 2273889476 2011-06-14 UMC, WSU El Progresso & R. S. Zack Guatemala Dpts. 284 14.929383 Tambor River 1 -89.8182 Rt. 14 465 4 2 2 Zacapa 2273889417 28. April USNM R. R. Miller Guatemala Km 14 465 1 1 Baja Verapaz 2273889331 13. March USNM R. R. Miller Guatemala Km 14 465 2 1 1 Jutiapa 2273889439 2015-02-22 UMC Aldea El Arenal & R. S. Zack Guatemala Rio San Diego 14 465 4 1 3 Zacapa 2273889389 2012-05-20 UMC Huixtla & Mapastepec & D. Reynoso-Velasco Mexico 15.179833 Km 1 -92.54742 14 465 2 1 1 Chiapas 2273889341 2015-03-31 UMC Reynoso-Velasco Mexico Rio Huixtla 64 15.149983 Sites 1 -92.45129 Huixtla 14 465 5 1 4 Chiapas 2273889492 2015-04-01 UMC Reynoso-Velasco Mexico Rio Huixtla 64 15.149983 Sites 1 -92.45129 Huixtla 14 465 7 7 Chiapas 2273889473 2015-04-01 MZUSP Sites & Reynoso-Velasco Mexico Chapingo Dos 57 15.237722 Puente Vado Ancho 1 -92.60061 Rio Vado Ancho 14 465 4 3 1 Chiapas 2273889343 1991-04-10 UMC E. Barrera Mexico Mpio Del Nayar Los Sabinos 14 465 2 1 1 Nayarit 2273889370 1953-07-08 UMC Univ. Kansas Mexican Mexico Slesnick Juchitan 14 465 5 3 2 Oaxaca 2273889352 1687-12-26 UMC D. Reynoso-Velasco Mexico 27.390917 Tepahui 1 -109.18433 Mpio. Quiriego 14 465 2 1 1 Sonora 2273889477 2003-05-14 UMC G. Camilo Nicaragua Tuburus 14.276667 Rio Geo 21 -85.17777 Miskito Indian Tasbaika 14 465 1 1 Atlantico Norte