Enoplocephala maculata, Chen & Liu & Cai, 2020

Chen, Zhuo, Liu, Yingqi & Cai, Wanzhi, 2020, Notes on the genus Enoplocephala Miller (Hemiptera: Reduviidae: Stenopodainae), with the description of a new species from Borneo, Raffles Bulletin of Zoology 68, pp. 369-378 : 373-376

Enoplocephala maculata , new species

( Figs. 9–29 )

Diagnosis. Body 17.6 mm in length, brown, mottled with yellowish brown spots and markings; head distinctly shorter than pronotum, about 1.3 times longer than width across eyes; process of antenniferous tubercle relatively short, blunt, nearly horizontal; spines of anterolateral angles of pronotum curved, nearly horizontal; humeral angles protruding posterolaterally; fore femur with two tiny denticles at base of ventral surface; area between Cu and claval suture on fore wing not occupied by blackish patch; blackish patch between M and Cu acuminate.

Description. Macropterous male ( Figs. 9–11 ). Colouration. Body brown. Head with glabrous areas of anteocular part, ventrolateral and ventral surfaces darker; dorsum of head with several blackish markings; antennal segments I and II yellowish brown, segment I mottled with black on basal third and apical third, and with two narrow, incomplete, blackish annuli medially ( Figs. 9 , 13 ), segment II black on base, medial third, and apex ( Figs. 9 , 13 ); segments III and IV greyish brown; labium yellowish brown, with basal spots and apical half (except apex) of segment II black, segment III mottled with black, segment IV darker ( Fig. 13 ). Pronotum with spines of anterolateral angles, medial carinae and spines of humeral angles yellowish brown; propleuron and prosternum darker. Apical process of scutellum yellowish brown. Legs yellowish brown; coxae dark brown; each trochanter with a dark brown spot at base; basal, medial, and subapical parts of all femora each with an irregular, incomplete, blackish annulus ( Figs. 9, 11 ); each tibia with a narrow, basal, blackish annulus and a broad, subbasal, blackish annulus ( Figs. 9, 11 ); apical two-thirds of fore tibia, apical half of mid tibia, apex of hind tibia darker; tarsomeres I and II brown, tarsomere III and claws darker. Fore wing with blackish patches in corium, clavus and membrane similar with that of E. perakensis , but without patch between Cu and claval suture, and patches in outer cell of membrane much smaller; blackish patch between M and Cu acuminate ( Figs. 9 , 16 ). Anterolateral and posterolateral angles of each abdominal segment yellowish brown ( Fig. 17 ); lateral margins of each segment with a reddish spot medially ( Fig. 17 ); ventral surface of abdomen mottled with several light spots ( Fig. 18 ).

Structure. Body shape and vestiture as in generic description. Head ( Figs. 12–14 ) 1.29 times as long as width across eyes, distinctly shorter than pronotum; ventral margin of anteocular part strongly concave in lateral view ( Fig. 13 ); mandibular plates produced anteriorly, nearly parallel to each other; spinelike process of antenniferous tubercle relatively short, nearly horizontal, apically blunt ( Figs. 12, 13 ). Pronotum ( Figs. 12, 13 ) 1.41 times wider than its length; spines of anterolateral angles curved outwardly, nearly horizontal; tubercles on lateral pronotal margins blunt, wart-like; humeral angles spine-shaped, strongly protruding posterolaterally ( Fig. 12 ); posterior pronotal margin nearly straight. Scutellum (to apex of apical process) 1.06 times as broad as its basal width, lateral margins convex, base of apical process distinctly constricted ( Fig. 12 ). Ventral surface of fore trochanter with one (right) or three (left) small denticles; fore femur with two tiny denticles at base of ventral surface ( Figs. 12, 14, 15 ). Abdomen 1.61 times as long as its greatest width.

Male genitalia. Pygophore ( Figs. 20–22 ) oblong, posterior part of pygophore expanded, posterior margin slightly concave at middle; median process ( Fig. 22 ) short, stout, apically rounded. Parameres ( Figs. 23–25 ) angularly bent near middle, with apical half covered with dense setae; subapical process lamellose. Phallus as shown in Figs. 26–28 ; articulatory apparatus thick; basal plates relatively narrow, basal plate bridge thin and short, with two pairs of capitate processes; pedicel thin, slightly longer than basal plates; phallotheca elongate oval; dorsal sclerotised plate ( Figs. 26, 27 ) wrinkled at apical half and slightly incised at apex; struts ( Figs. 26–28 ) nearly parallel to each other, apical portion converged and fused with dorsal sclerotised plate.

Measurements [in mm, male (n = 1, holotype)]. Length of body (to apex of abdomen) = 17.60; length of head = 2.70; length of anteocular part = 1.35; length of postocular part = 0.55; width across eyes = 2.10; interocular space = 0.90; interocellar space = 0.40; length of antennal segments I–IV = 3.15, 3.85, 0.80, 0.90; length of labial segments II–IV = 1.70, 0.70, 0.50; length of pronotum = 3.20; length of anterior pronotal lobe = 1.20; length of posterior pronotal lobe = 2.00; width of anterior pronotal lobe = 2.25; width of posterior pronotal lobe = 4.50; median length of scutellum = 1.85; basal width of scutellum = 1.75; length of fore femur, tibia, tarsus = 4.55, 5.25, 0.95; length of mid femur, tibia, tarsus = 5.15, 5.80, 0.95; length of hind femur, tibia, tarsus = 7.15, 10.20, 1.15; length of fore wing = 11.75; length of abdomen = 9.90; greatest width of abdomen = 6.15.

Type material. Holotype (male): “ Malaysia, Sabah \ Borneo Jungle Girl Camp \ 2017-II- [printed] 4 [handwritten] \ leg. Liu Yingqi \ Ent. Mus. CAU. Beijing”; “ HOLOTYPE [printed] \ Enoplocephala [handwritten] \ maculata sp. n. [handwritten] \ Det. CHEN Zhuo [printed]” ( CAU).

Etymology. The specific epithet is derived from Latin ‘ maculatus ’ (meaning spotted), referring to the mottled body colour of the new species.

Distribution. Malaysia (Sabah).

Figures

Figs. 9–11. Enoplocephala maculata, new species, holotype, male, habitus. 9, dorsal view; 10, lateral view; 11, ventral view. Scale bar = 5.00 mm.

Figs. 12–18. Enoplocephala maculata, new species, holotype, male. 12–14, anterior part of body; 15, head; 16, fore wing; 17, 18, posterior part of body. 12, 16, 17, dorsal view; 13, lateral view; 14, 18, ventral view; 15, front view. Scale bars for 12–14, 17, 18 = 2.00 mm; 15 = 1.00 mm; 16 = 3.00 mm.

Figs. 19–28. Enoplocephala maculata, new species, holotype, male. 19, abdominal segment VIII; 20–22, pygophore; 23–25, paramere; 26–28, phallus. 19, 27, ventral view; 20, 26, dorsal view; 21, 28, lateral view; 22, caudal view. Scale bars for 19, 23–28 = 0.50 mm; 20–22 = 1.00 mm.

Fig. 29. Known distribution of Enoplocephala species.