Bruchomorpha decorata Metcalf, 1923

de Freitas, Abner S., Dietrich, Christopher H. & Takiya, Daniela M., 2020, Five new species of Caliscelidae (Insecta, Hemiptera) from Mexico and Panama, with additional redescriptions of little-known species, European Journal of Taxonomy 717, pp. 27-69 : 32-36

Bruchomorpha decorata Metcalf, 1923

Figs 3–5, 26B

Bruchomorpha decorata Metcalf, 1923: 186 , figs 57, 223.

Bruchomorpha decorata – Ball 1935: 198 (key, notes). — Doering 1939: 126, pl. XX: fig. 14, pl. XXI: fig. 2, pl. XXII: figs 12, 12a, 12b (redescription, illustration). — Caldwell 1945: 92, pl. I: fig. 9 (redescription, illustration).

Diagnosis

Body mainly dark brown to black with several pale maculae ( Fig. 3); vertex hexagonal ( Fig. 3B, E); frons with strong median carina and central plate with pale heart-shaped macula ( Fig. 3A, D); clypeus extending anteriorly, produced into slight snout ( Fig. 3C, F); lateral lobe of pronotum with three to four sensory pits arranged in a row ( Fig. 3C, F); abdominal tergites ( Fig. 3C, F, 26B) with row of sensory pits followed by single isolated ventral sensory pit (tergite IV) or by isolated pair of diagonally aligned ventral sensory pits (tergites V to VII).

Material examined

Type material

USA • 1 Ƌ, holotype of Bruchomorpha decorata Metcalf, 1923 ; “Brownsville, Tex[as]”; 21 Nov. 1911; palm jungle sweepings; INHS • 1 ♀, allotype of Bruchomorpha decorata Metcalf, 1923 ; same collection data as for preceding; INHS .

MEXICO • 1 ♀, holotype of Bruchomorpha decorata var. nihldecorata Caldwell, 1947 ; Sonora, Hacienda Naynari, M.B. 209; 19 Mar. 1927; NMNH (based on photographs) .

Other material

MEXICO • 4 ƋƋ, 3 ♀♀; Jalisco, ca La Huerta ; 19º27′58″ N, 104º39′13″ W; 480 m a.s.l.; 15 Oct. 2001; J.N. Zahniser leg.; vacuum sample; INHS • 1 ♀; same collection data as for preceding; 19º27′58″ N, 104º39′8″ W; 460 m a.s.l.; 16 Oct. 2001; C.H. Dietrich leg.; vacuum sample; INHS • 3 ƋƋ, 1 ♀; Veracruz, rt. 180, Km 31, 17 km NW of Alvarado; 18º50′ N, 95º57′ W; 0 m a.s.l.; 28 Oct. 2001; C.H. Dietrich leg.; sweep/vacuum sample; INHS • 1 Ƌ; Durango, rt. 45, Km 121 ca Fco. Primo Verdad ; 24.89762° N, 104.46098° W; 1590 m a.s.l.; 27 Oct. 2005; C.H. Dietrich leg.; vacuum sample; INHS .

PANAMA • 1 ♀; Verugas , Pan-Am Highway, 40 km W of Santiago; 8.20298° N, 81.18768° W; 166 m a.s.l.; Aug. 2005; J.N. Zahniser leg.; sweep; DNA voucher ENT4205; NMNH .

Description

BODY LENGTH. Male (holotype of Bruchomorpha decorata Metcalf, 1923 ) = 2.6 mm; females = 3.4 to 4.0 mm.

COLORATION. Body mainly black with several pale maculae in males ( Fig. 3 A–C); females ( Fig. 3 D–F) having lighter, dark brown coloration overall with pale maculae larger than in males. Central plate of frons ( Fig. 3A, D) with pale heart-shaped macula divided by median carina; side of frons ( Fig. 3C, F) pale. Pronotum ( Fig. 3B, E) mostly pale; lateral lobe of pronotum ( Fig. 3C, F) with posterior half pale. Mesonotum ( Fig. 3B, E) with anterior and posterior portions of middle region distinctly pale. Forewings black in males ( Fig. 3 B–C) and hyaline in females ( Fig. 3 E–F), both with white veins.

HEAD AND THORAX. Vertex ( Fig. 3B, E) hexagonal, shorter than half its width, shorter than pronotum length; posterior margin slightly elevated. Frons ( Fig. 3A, D) with strong median carina and pair of sublateral carinae; sublateral carinae convergent and fused to each other ventrally; central plate ( Fig. 3A, D) longer than wide at widest portion, visible in dorsal view ( Fig. 3B, E), not extending anteriorly beyond sublateral carinae in lateral view ( Fig. 3C, F); sides of frons partially visible in frontal view ( Fig. 3A, D) and fused above clypeus, with two rows of sensory pits on each side in lateral view ( Fig. 3C, F): anterior row with eight sensory pits, five dorsal ones grouped together, followed by sixth isolated one aligned with antenna, and pair of ventral ones isolated next to clypeus; posterior row with four sensory pits, most ventral one slightly isolated. Clypeus ( Fig. 3C, F) swollen, extending anteriorly in lateral view, consequently pushing frons anteriorly and producing very lightly produced snout; longer than high in lateral view, with complete and elevated median carina. Ocelli absent. Eye oblong. Antenna short, with several small circular structures visible on pedicel. Pronotum ( Fig. 3B, E) semicircular, shorter than half its width, with distinct median carina; median portion of disc without sensory pits; lateral portion of disc with 15 to 19 (holotype and allotype with 18 to 19) sensory pits; lateral lobe ( Fig. 3C, F) with three (holotype) to four sensory pits arranged in row. Mesonotum ( Fig. 3B, E) with distinct median carina and pair of lateral carinae; region between lateral carinae depressed, without sensory pits; region outerad of lateral carina with 10 to 13 (holotype with 11) sensory pits. Brachypterous, with reticulated venation. Legs simple; with carinae and setae; tibia III with single median spine.

ABDOMEN. Terga without longitudinal carinae. Tergite III ( Figs 3F, 26B) without sensory pits. Tergite IV ( Figs 3F, 26B) with one row of three to five sensory pits followed by single isolated ventral one. Tergites V to VII ( Figs 3F, 26B) with one row of three to four (holotype and allotype with three to four) sensory pits followed by isolated ventral pair aligned diagonally ( Fig. 26B). Tergite VIII ( Fig. 26B) with one sensory pit.

MALE TERMINALIA. Pygofer ( Fig. 4A) narrow, with anterior margin deeply concave; posterior margin almost straight. Connective ( Fig. 4B) inverted Y-shaped, with support bridge with dorsal flap. Style ( Fig. 4 C–D) hook-like; anterior portion pointed; posterior portion strongly curved anterodorsally ( Fig. 4D), converging towards the other in dorsal view ( Fig. 4C); dorsal margin ( Fig. 4D) with slight protuberance on median third; ventral margin ( Fig. 4D) with concavity on anterior third, remainder rounded; middle portion ( Fig. 4D) almost as long as high, setose; apex serrated ( Fig. 4D). Phallobase ( Fig. 4 E–H) sclerotized, symmetrical, with two defined lobes; apex with pair of lobes curved ventrally in lateral view ( Fig. 4 G–H); apices of lobes truncate in dorsal view ( Fig. 4 E–F), surrounding aedeagus from middle third.Aedeagus ( Fig. 4 E–F) apex narrow and open dorsally, with pair of hooks, both curved ventrad and anterolaterally, but one positioned more dorsally than other. Suspensorium V-shaped. Segment X of anal tube ( Fig. 4 I–J) as long as wide; posterior margin ( Fig. 4I) rounded; setose.

FEMALE TERMINALIA. Posterior margin of sternite VII ( Fig. 5B) with median portion slightly produced, setose. Gonoplac ( Fig. 5C) sclerotized, sub-rectangular with apex truncate, setose. Anterior connective lamina of gonapophysis VIII ( Fig. 5D) with three apical teeth: innermost larger than outer ones, narrow and long, middle one widest, outer one short and apically rounded; middle and outer ones closer to each other than to inner one. Posterior connective lamina of gonapophysis IX ( Fig. 5 E–F) distal part with longitudinal row of ten to twelve short and triangular spines in lateral view ( Fig. 5F); middle portion with several pits ( Fig. 5F); apex setose ( Fig. 5F). Segment X of anal tube ( Fig. 5 G–H) longer than wide at widest portion; posterior margin ( Fig. 5G) pointed with apex rounded; setose.

Remarks

This species was identified based on comparisons with the type series (holotype and allotype) from Texas ( USA) and the original description by Metcalf (1923) plus the redescription by Doering (1939), which do not include the arrangement of abdominal sensory pits or female terminalia. Previously published illustrations of the dorsal view of the body and lateral view of the head allow comparison of the sensory pits of the sides of the frons and the lateral lobe of pronotum to those of other species. The male terminalia were previously illustrated superficially, but the overall shape could also be compared. Two recently collected available specimens have four sensory pits on each lateral lobe of pronotum ( Fig. 3C, F), which is different from the three sensory pits illustrated by Metcalf (1923) and Doering (1939). Both specimens of the type series have three pits on the right side, but the female allotype has four pits on the left side. A series of several additional specimens from Mexico (see Material examined above) includes one additional male and female with three pits on one pronotal lobe and four on the other; the remaining specimens have three pits on both lobes, as in the holotype, and their genitalia match those of other studied specimens of this species. The holotype of Bruchomorpha decorata var. nihldecorata Caldwell, 1945 also has four pits.

Finally, this species is firstly recorded from Panama.