Illustrated key to the species in the genus Laminiceps Costa, 1863 (Hemiptera: Heteroptera: Coreidae: Acanthocephalini), with descriptions of twelve new species Author Brailovsky, Harry 0000-0001-7456-5678 Instituto de Biología, Universidad Nacional Autónoma de México, apdo postal 70153, Ciudad de México 04510, México. & coreidae @ ib. unam. mx; https: // orcid. org / 0000 - 0001 - 7456 - 5678 coreidae@ib.unam.mx Author Barrera, Ernesto 0000-0001-8276-2553 Instituto de Biología, Universidad Nacional Autónoma de México, apdo postal 70153, Ciudad de México 04510, México. & ernesto. barrera @ ib. unam. mx; https: // orcid. org / 0000 - 0001 - 8276 - 2553 ernesto.barrera@ib.unam.mx text Zootaxa 2023 2023-10-03 5352 2 177 202 http://dx.doi.org/10.11646/zootaxa.5352.2.2 journal article 272021 10.11646/zootaxa.5352.2.2 7d8204b7-a7d1-418a-8007-f44170153435 1175-5326 10130075 35D80A5A-C1E0-427C-9636-87790E1253FF Laminiceps eustoliana sp. nov. ( Figs. 29 , 56 , 87 , 101–102 ) Type locality. Paraguay . Description. Holotype male. Dorsal coloration. Head black with bluish green reflections; tylus and longitudinal stripe close to eyes yellow; antennal segments I–IV black; pronotum including humeri black with bluish green reflections; collar, callar region, and anterolateral margins yellow; scutellum black with bluish green reflections, and apex yellow; clavus and corium black with bluish green reflections; hemelytral membrane dark brown; connexival segments III–VII black with yellow oval transverse stripe near midline; dorsal abdominal segments III–VII black. Ventral coloration. Head yellow with the area behind eyes black; buccula yellow; rostral segment I yellow, II–IV brown; thorax yellow; supracoxal spine black with bluish green reflection, and short and slender pale brown mark near inner margin of mesopleura; coxae and trochanter yellow; fore and midlle femora yellow with apical third including the spines brown to black with dark castaneous reflections; hind femur and most of the spines yellow, with apical border and apical spine dark brown; tibiae and tarsi black; abdominal sterna III–VII yellow; pleural abdominal margin III yellow, IV–VII yellow with apical border dark brown, except the yellow posterior margin; genital capsule black with bluish green reflections. Structure. Head. Antennal segment III uniformly elongate, slender; rostrum reaching posterior margin of mesosternum. Thorax. Pronotum. Trapeziform; anterolateral and posterolateral margins almost smooth; posterior border straight; humeral angles subacute, not exposed. Genital capsule. Posteroventral border almost straight, to slightly sinuate ( Fig. 87 ). Parameres. Figs. (101–102). Measurements. Male. Body length 21.27; head length 2.04; head width across eyes 3.10; interocular distance 1.24; interocellar distance 0.67; preocular distance 1.19; length antennal segments I 4.37, II 4.40, III 2.85, IV 6.38; length of rostral segments I 1.30, II 1.79, III, 1.55, IV 1.17; pronotum total length 4.40; maximum width across humeral angles 7.50; scutellum length 2.41, width 2.79. Female. Unknown. Type material. HOLOTYPE male: PARAGUAY : without data, Fiebrig, S. V . ( ZMUH ). Etymology. Named for Eustolia Vargas Juarez, mother of the second author. Discussion. Differential diagnosis. This new species is related to L. fasciatus (Dallas) ( Figs. 6–7 , 46–48 ) by having the tylus, buccula, and abdominal sterna III–VII yellow; hind femora yellow with apical border black; and thorax yellow with supracoxal spine and small sector of meta-acetabulae black with bluish green reflections. Laminiceps fasciatus is distinguished by having a broad yellow transverse fascia at corium; fore femora yellow with short brown stripe at posterior half, and middle femora yellow with apical border black. In L. eustoliana sp. nov. ( Figs. 29 , 56 ) the corium is entirely black with bluish green reflections and without yellow transverse fascia, and fore and middle femora entirely black with bluish green reflections. FIGURES 80–85. Male genital capsule of Laminiceps spp. 80–81, L. fasciatus (Dallas) . 82, L. fenestratus (Burmeister) . 83, L. festivus Distant. 84, L. gelidus sp. nov. 85, L. lutescens Brailovsky. FIGURES 86–88. Male genital capsule of Laminiceps spp. 86, L. navus sp. nov. 87, L. eustoliana sp. nov. 88, L. viduus Breddin.