Amnestus marcelae Mayorga and Cervantes

Martinez, Cristina Mayorga & Peredo, Luis Cervantes, 2014, The genus Amnestus Dallas (Hemiptera: Heteroptera: Cydnidae: Amnestinae) in Mexico, with the description of eleven new species from Chiapas, Zootaxa 3779 (4), pp. 401-432 : 415

Amnestus marcelae Mayorga and Cervantes n. sp.

( Figs. 3a , 4i , 5i , 6i , 7i , 8i )

Diagnosis. Anterior disc of pronotum elevated without punctures, anterior margin with a series of deep submarginal punctures; prosternal carina with ventral margin straight ( Fig. 4i ).

Description. Head, antennal segments III, IV, and V, pronotum, prosternal carina, ostiole, abdominal venter, and scutellum dark brown. Antennal segments I and II, clavus, corium, and legs pale brown; rostral segments and tarsi of all legs pale yellow.

Head. Interocular area rugose; tylus with four pegs on apex and slightly longer than juga; antennal segment II very short; rostrum reaching anterior margin of mesosternum. Thorax. Pronotum with anterior margin concave, anterior half convex, without punctures, anterior half of anterolateral margins carinate; with abundant deep punctures posteriorly. Propleura shiny and polished, with a series of fine hairs close to prosternal carina ( Fig. 4i ). Mesopleura flat, evaporatorium extended towards anterior and lateral margins. Metapleura flat, evaporatorium reaching posterior and lateral margins, peritreme long with shiny margins; posterior margin of evaporatorium with deep punctures ( Fig. 5i ). Legs. Fore tibiae with five spines on dorsal margin and slightly sinuate on ventral margin; fore femora with a mesial, bifid spine ( Fig. 6i ). Hind femora with dorsal and ventral margins smooth, with a small spine on the apex of dorsal surface, and with a simple spine near apex on ventral surface; hind tibiae, with basal half flat and with a small spine near base on ventral surface ( Fig. 7i ). Scutellum triangular, apex acute, scattered punctures on disc. Hemelytra. Clavus with three rows of punctures; mesocorium uniformly punctured; membrane hyaline, surpassing apex of abdomen. Abdomen convex, covered with fine hairs.

Male genitalia. Parameres broad at middle, apically elongated, with two setigerous punctures on apex of dorsal surface ( Fig. 8i ).

Male measurements (n=2). Body length 4.2; head length 0.55; width across eyes 0.75; interocular distance 0.45; interocellar distance 0.25; antennal segments: I 0.20, II 0.05, III 0.40, IV 0.35, V 0.40; rostral segments: I 0.30, II 0.35, III 0.35, IV 0.25; pronotum length 1.25; width across anterior margin 0.85; width across humeral angles 1.8; scutellum: length 0.95; width 1.1; length of fore femora 0.6; fore tibiae 0.8; fore tarsi: I 0.1, II 0.05, III 0.15; length of hind femora 1.0; hind tibiae 1.2; hind tarsi: I 0.1, II 0.05, III 0.15.

Holotype. Male: Chiapas, Amatenango del Valle, 12-VIII-2006; M. B. Briceño, Necrotrampa, Parcela 5, Trampa 12 ( CNIN). Paratypes. Chiapas, Angel Albino Corzo, Reserva El Triunfo, Road to Finca Prusia near campamento, 16–20-XI-2001, P. Kovarik, R.W. Jones, yellow pan trap, 15° 23' 39" N, 92° 29' 12" W, 2020 m, 1♂. Chiapas, Angel Albino Corzo, Reserva El Triunfo, Road to Finca Prusia near campamento, 16–20-XI-2001, P. Kovarik, yellow pan trap, 15° 23' 39" N, 92° 29' 12" W, 2020 m, campamento Transect site # 5 flight intercept trap, 1♀ ( CNIN).

Distribution. Mexico: Chiapas.

Etymology. This species is dedicated to Marcela Briceño Báez, who collected many of the specimens.

Figures

FIGURES 3 A – E. Dorsal view of adults. a. A. marcelae new species, b. A. puncticarinatus new species, c. A. santiagensis new species, d. A. septemclavatus new species, e. A. stali Distant (scale = 1 mm).

FIGURES 4 A – M. Lateral view of head and prothorax, showing prosternal carina. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species, e. A. denticulatus new species, f. A. laevifemoralis new species, g. A. longinoi new species, h. A. lorenae new species, i. A. marcelae new species, j. A. puncticarinatus new species, k. A. santiagensis new species, l. A. septemclavatus new species, m. A. stali Distant.

FIGURES 5 A – M. External scent efferent system. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species, e. A. denticulatus new species, f. A. laevifemoralis new species, g. A. longinoi new species, h. A. lorenae new species, i. A. marcelae new species, j. A. puncticarinatus new species, k. A. santiagensis new species, l. A. septemclavatus new species, m. A. stali Distant.

FIGURES 6 A – O. Male fore leg, anterior view. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species, e. A. denticulatus new species, f. A. laevifemoralis new species, g. A. longinoi new species, h. A. lorenae new species, i. A. marcelae new species, j. A. puncticarinatus new species, k. A. santiagensis new species, l. A. septemclavatus new species, m. A. stali Distant, n. A. sinuosus, o. A. basidentatus.

FIGURES 7 A – Q. Male hind leg, posterior view. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species, e. A. denticulatus new species, f. A. laevifemoralis new species, g. A. longinoi new species, h. A. lorenae new species, i. A. marcelae new species, j. A. puncticarinatus new species, k. A. santiagensis new species, l. A. septemclavatus new species, m. A. stali Distant, n. A. sinuosus, o. A. brunneus, p. A. ficus, q. A. pusillus.

FIGURES 8 A – N. Lateral view of parameres. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species, e. A. denticulatus new species, f. A. laevifemoralis new species, g. A. longinoi new species, h. A. lorenae new species, i. A. marcelae new species, j. A. puncticarinatus new species, k. A. santiagensis new species, l. A. septemclavatus new species, m. A. stali Distant, n. A. forreri.