Enigmocephala deinorhyncha, Rédei, Dávid, 2007

Rédei, Dávid, 2007, A new genus of tribelocephaline assassin bugs from Borneo (Hemiptera: Heteroptera: Reduviidae), Zootaxa 1465, pp. 47-53 : 52-53

Enigmocephala deinorhyncha sp. n.

( Figs 1–12 )

Type material. Holotype (Ψ): “ MALAYSIA: Sarawak \ 25km E Kapit \ III. 1994 \ leg. Kodada”; deposited in the Natural History Museum of Vienna.

Description. Apterous female.

Colour. Body rather uniformly brown; scape, pedicel, tibiae, and tarsi distinctly lighter; antennal flagellum pale yellow; thoracic pleuron and sternum dark blackish brown; supracoxal lobes brown. Dense pubescence of the body grayish brown; large paired oval pubescence near base of abdominal dorsum light yellowish brown.

Structure. Head about 1.9 times as long as its width across eyes, diatone about 1.37 times greater than interocular distance. Antenna. Pedicel about 1.25 times longer than scape and about 1.2 times as long as width of head. Thorax. Disc of pronotum with two pairs of tubercles surrounded by pair carinae laterally and posteriorly, posterior pair of these tubercles distinctly larger than anterior one; with pair large posterior protuberances at posterior border of pronotum; and with deep medial furrow between these protuberances. Meso- and metanota each with pair submedial tubercles and deep medial sulcus. Abdomen about 1.2 times longer than its greatest width. Female genitalia as in Figs 10–12 .

Measurements (in mm). Body length 7.2. Length of head from apex of basal pubescent area to apex of clypeus 1.76, greatest width 0.93, interocular distance 0.68. Length of antennal segments I: II: III1: III2: IV1: IV2: IV3: IV4 = 0.88: 1.10: 0.102: 0.186: 0.322: 0.153: 0.169: 0.339, greatest width of segments I: II: flagellum = 0.255: 0.085: 0.042. Length of visible labial segments I: II: III = 0.86: 1.61: 0.17. Length of pronotum from anterior margin of anterior pubescent area to level of posterior protuberances 1.27, greatest width of pronotum 1.61, greatest width of thorax (metapleuron) 1.88. Medial length of abdomen in dorsal aspect 3.8, greatest width 3.2. Lengths of femur, tibia, and tarsus (segments I and II) of fore leg 2.02, 1.95, and 0.44 (0.32 and 0.15); of mid leg 1.95, 1.81, and 0.36 (0.31 and 0.12); of hind leg 2.51, 2.48, and 0.46 (0.17 and 0.34), respectively; greatest widths of fore, mid, and hind femora 0.52, 0.46, and 0.50, respectively.

Etymology. The specific name from the Greek δεɭνOς, δεɭνO- (latinized as deino -) ‘enormous, terrible’ and Greek ρυγχOς (latinized as rhynchos) ‘beak’, referring to the very robust labium of the species.

Figures

FIGURE 1. Enigmocephala deinorhyncha gen. n., sp. n., female holotype.

FIGURES 2 – 6. Enigmocephala deinorhyncha gen. n., sp. n., female holotype. 2, head, thorax and base of abdomen, dorsal view, 3, same, lateral view, 4, head, dorsal view, 5, same, anterior view, 6, apex of labium, lateral view. Scales in mm.

FIGURES 7 – 12. Enigmocephala deinorhyncha gen. n., sp. n., female holotype. 7, right fore leg, 8, right mid leg, 9, right hind leg, 10, abdomen, lateral view, 11, apex of abdomen, lateral view, 12, same, posterior view. Scales in mm.