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 navus sp. nov. ( Figs. 12 , 69 , 86 , 99–100 ) Type locality. Bolivia , Departamento Santa Cruz , Buenavista , Tohito . Description. Holotype male. Dorsal coloration. Head black; tylus yellow; antennal segments I–IV black; pronotum black with bluish green reflections, with collar, callar region, anterolateral margins and a slender longitudinal stripe across midline yellow; scutellum black with bluish green reflections and a yellow slender longitudinal stripe across midline; clavus black with bluish green reflections; corium black with bluish green reflections and complete wide yellow transverse fascia near midline; hemelytral membrane dark brown with basal angle yellow; connexival segment III yellow, IV with anterior half yellow and posterior half black, V–VI black, and VII black with posterior third yellow. Ventral coloration. Head including the buccula yellow; juga black with bluish green reflections; rostral segments I–IV black; thorax yellow; posterior margin of meso- and metapleuron with large black bluish green reflections spot; fore leg with coxae and trochanters yellow, femora black with bluish green reflections with a yellow irregular spot near to the apex of ventral surface; tibiae and tarsi black with bluish green reflections; middle and hind leg with coxae and trochanters yellow, femora bicolored, dorsally black with bluish green reflections with the apex yellow and ventrally yellow, included the spines; tibiae and tarsi black with bluish green reflections; abdominal sterna III–VII and genital capsule yellow; pleural margins of abdominal sternite III yellow, IV black with anterior angle yellow, V–VI black with bluish green reflections and VII yellow mixed with pale brown marks. Structure. Head. Antennal segment III uniformly elongate, slender; rostrum reaching posterior margin of mesosternum. Thorax. Pronotum. Trapeziform; anterolateral and posterolateral margins smooth; posterior border straight; humeral angles almost rounded. Genital capsule. Posteroventral border slightly straight to quadrate ( Fig. 86 ). Parameres. Figs. (99–100). Measurements. Male. Body length 18.15; head length 1.75; head width across eyes 2.79; interocular distance 1.19; interocellar distance 0.52; preocular distance 0.90; length antennal segments I 3.53, II 3.03, III 2.23, IV 5.82; length rostral segments I 1.55, II 1.61, III 1.55, IV 1.11; pronotum total length 3.96; maximum width across humeral angles 6.44; scutellum length 2.23, width 2.41. Female. Unknown. Type material. HOLOTYPE female: BOLIVIA : Departamento Santa Cruz , Buenavista , Tohito , 400 m , 1956 (without date), Franz Steinbach ( J. C. Lutz colln., 1961) ( USNM ). Etymology. From the Latin “ navus ” meaning busy, active. Discussion. Differential diagnosis. Related to L. fasciatus (Dallas) and L. proximus Breddin by having a wide complete yellow transverse fascia on corium, the pronotal disk black with bluish green reflections with collar, callar region, anterior lobe of pronotal disk and anterolateral margins yellow (humeri black with bluish green reflections), and antennal segment III uniformly elongate and slender. In L. navus sp. nov. , pronotal and scutellar disk has a yellow slender stripe across midline, while on the other species it is absent; middle femora bicolored, dorsal surface black with bluish green reflections and ventrally included the spines yellow, while the middle femora of L. fasciatus are yellow with posterior border black and entirely black with bluish green reflections in L. proximus . The trochanters are yellow in L. fasciatus and L. navus , and brown in L. proximus . The hind femora in both, L. navus and L. proximus are bicolorous, dorsally black with bluish green reflections and ventrally yellow, in contrast with L. fasciatus , where are yellow with only the apical border brown.