Enoplocephala perakensis Miller, 1940

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 : 372-373

Enoplocephala perakensis Miller, 1940

( Figs. 1–8 , 29 )

Enoplocephala perakensis Miller, 1940: 441 .

Holotype. Male. Malaysia, Perak, BMNH.

Diagnosis. Body 18 mm in length, dark brown, mottled with yellowish brown spots and markings; head slightly shorter than pronotum, about 1.4 times longer than width across eyes; process of antenniferous tubercle long, acute, suberect; spines of anterolateral angles of pronotum straight, suberect; humeral angles protruding laterally; fore wing with blackish patch occupying area between Cu and claval suture; blackish patch between M and Cu broad.

Redescription. Macropterous male ( Figs. 1–3 ). Colouration. Body dark brown. Head with ventrolateral and ventral surfaces darker; ocelli yellowish brown; antennal segments I and II brown, segment I mottled with black on basal third and apical third, and with two narrow, incomplete, blackish annuli medially ( Fig. 5 ), segment II black on base, medial third, and apex ( Fig. 6 ), segment III greyish brown; labium brown, with dorsal and lateral surfaces of apical half of segment II and apical third of segment III black ( Figs. 6, 7 ). Pronotum with apical half of spines of anterolateral angles, tubercles on lateral margins, submedian carinae, and spines of humeral angles lighter ( Fig. 5 ). Legs brown; basal, medial, and subapical parts of all femora each with a blackish, irregular, incomplete annulus ( Figs. 1–3 ); basal and subapical parts of fore and mid tibiae each with a blackish annulus ( Figs. 1–3 ). Fore wing with blackish patches in corium occupying whole area of cubital cell and areas between R+M and Cu (paler), M and Cu, Cu and claval suture, and R and M+Cu ( Fig. 8 ); blackish patch between M and Cu relatively broad ( Figs. 1 , 8 ); exocorium with an elongate, blackish patch medially; medial border of Pcu with a narrow, elongate, blackish spot; clavus with an elongate, blackish patch along its medial border; membrane with a basal, subtriangular spot and a subapical, irregular patch in outer cell, and a narrow, elongate, blackish spot near base of M in membrane ( Fig. 8 ). Abdomen mottled with yellowish brown; basal two-thirds of lateral margins of each abdominal segment yellowish brown; posterolateral angles darker ( Fig. 8 ).

Structure. Body shape and vestiture as in generic description. Head ( Figs. 5–7 ) 1.43 times as long as width across eyes, slightly shorter than pronotum; ventral margin of anteocular part nearly straight in lateral view ( Fig. 6 ); mandibular plates slightly produced anterolaterally ( Fig. 5 ); spine-like process of antenniferous tubercle long, suberect, apically acute. Pronotum ( Figs. 5, 6 ) 1.45 times wider than its length; spines of anterolateral angles straight, suberect; tubercles on lateral pronotal margins relatively acute; humeral angles strongly protruding laterally ( Fig. 5 ); posterior pronotal margin slightly concave. Ventral surface of fore trochanter and femur without denticle and spine. Abdomen 1.56 times as long as its greatest width.

Male genitalia. As in generic description. Phallus not examined.

Measurements [in mm, male (n = 1, holotype)]. Length of body (to apex of abdomen) = 18.00; length of head =

RAFFLES BULLETIN OF ZOOLOGY 2020

3.00; length of anteocular part = 1.65; length of postocular part = 0.60; width across eyes = 2.10; interocular space = 0.80; interocellar space = 0.20; length of antennal segments I–IV = 3.30, 3.65, 0.90,?; length of labial segments II–IV = 2.10, 0.85, 0.60; length of pronotum = 3.30; length of anterior pronotal lobe = 1.30; length of posterior pronotal lobe = 2.00; width of anterior pronotal lobe = 2.10; width of posterior pronotal lobe = 4.80; median length of scutellum = 1.60; basal width of scutellum = 1.40; length of fore femur, tibia, tarsus = 6.00, 6.20, 1.10; length of mid femur, tibia, tarsus = 6.30, 7.40, 1.10; length of hind femur, tibia, tarsus = 9.00,?,?; length of fore wing = 12.40; length of abdomen = 10.20; greatest width of abdomen = 6.55.

Type material examined. Holotype (male): red-margined holotype disc; red-margined type disc; “male sex symbol”; “ PERAK \ DOHERTY”; “Distant Coll. \ 1911-383”; “ Enoplocephala [Miller’s handwriting] \ perakensis [Miller’s handwriting] \ gen. nov. sp. n. [Miller’s handwriting] \ det. N.C.E.Miller 193 [printed] 8 [Miller’s handwriting]”; “ NHMUK 013587199”. Pinned specimen, fourth antennal segments of both antennae, tarsus of left fore leg, tibiae and tarsi of left mid leg and both hind legs missing, male genitalia taken off and glued on card pinned with the specimen ( BMNH).

Distribution. Malaysia (Perak).

Remarks. Enoplocephala perakensis was described by Miller (1940) based on the holotype from Distant’s collection. After our examination of the holotype, it can be declared that Miller’s illustrations (see Miller, 1940: 441) are not completely accurate, especially for the blackish patches on the fore wing. The “dissected” male genitalia of the specimen are glued on a card, pinned with the specimen. Morphological information on the male genitalia of this species is obtained from our observation on the specimen, and Miller’s illustration, thus the phallus of this species remains unknown. Data of the specimen labels ( Fig. 4 ) are scarce, and no additional specimen is available, resulting in our limited knowledge of this species.

In his worldwide catalogue of Reduviidae , Maldonado- Capriles (1990) documented the type locality of this species incorrectly as “ Selangor ”.

Figures

Figs. 1–4. Enoplocephala perakensis Miller, 1940, holotype, male, habitus. 1, dorsal view; 2, lateral view; 3, ventral view; 4, labels. Scale bar of 1–3 = 5.00 mm.

Figs. 5–8. Enoplocephala perakensis Miller, 1940, holotype, male. 5, 6, anterior part of body; 7, body habitus; 8, posterior part of body. 5, 8, dorsal view; 6, lateral view; 7, ventral view. Scale bars = 3.00 mm.

Fig. 29. Known distribution of Enoplocephala species.