Bargylia longispina, Rédei, 2007

Rédei, D., 2007, New And Little-Known Thread-Legged Assassin Bugs From Australia And New Guinea (Heteroptera: Reduviidae: Emesinae), Acta Zoologica Academiae Scientiarum Hungaricae 53 (4), pp. 363-379 : 372-376

publication ID	https://doi.org/ 10.5281/zenodo.12585259
persistent identifier	https://treatment.plazi.org/id/03EBA06D-FFB0-FF99-2E5B-518725C2FC27
treatment provided by	Felipe
scientific name	Bargylia longispina
status	sp. nov.

Treatment

Bargylia longispina View in CoL sp. n.

( Figs 14–28 View Figs 14–22 View Figs 23–28 )

Type material. Holotype (m): “ AUSTRALIA \ Queensland \ Ingham ” [printed]; “ 22–28.III. 1965. \ at light \ leg. J. Balogh ” [printed]; “ Holotypus \ Bargylia \ longispina sp. n. \ det. Rédei, 2006” [type label with red borders, handwritten+printed]; deposited in the HNHM.

Description. Apterous male.

Colour. General colour light yellowish brown, tubercles densely covering dorsal body surface slightly lighter. Head as general body colour, its lateral sides as well as a pair of two elongate spots on the dorsal surface of its postocular part brown; clypeal spine and spines of antenniferous tubercles darkened laterally. Rostrum rather uniformly light yellowish; antennal segment I light yellowish basally, gradually darkening toward its apex, segments II–IV light brown. Prothorax as general body colour, uniformly yellowish ventrally, bearing distinct brown pattern composed of a pair of longitudinal stripes and some larger spots dorsally. Meso- and metanota as general body colour, each with a pair of wide, longitudinal, brown stripes. Abdomen as general body colour; tergites with an obscure, disrupted medial and a pair of lateral brownish stripes, medial tubercle at posterior margin of tergites III–VI dark brown; dorsal laterotergites II–VI yellowish, their posterior half brown, posteriolateral angle dark brown; ventral laterotergites yellowish, their posterior angles brown; sternites yellowish, each with a pair of ventrolateral spots near the posterior margin, and some more laterad brown suffusion. Fore coxa yellowish, slightly suffused with brown apically; fore trochanter as apex of coxa; fore femur yellowish, with brownish suffusion at its lateral surface towards apex; fore tibia and tarsus yellowish with some brownish suffusion. Mid and hind femora yellowish, mid femur with wide apical, hind femur with wide subapical, brown, indistinctly delimited annuli; mid and hind tibiae and tarsi light yellowish brown.

Structure. Body elongate, surface of head, thorax and abdomen densely covered with large, conspicuous tubercles; body covered only with very short, adpressed, hard to observe pilosity. Head as shown in Figs 14 and 15 View Figs 14–22 , about 1.5 times longer than diatone (length measured without clypeal spine!), porrect, with a deep interocular furrow; preocular part distinctly longer than postocular, postocular part globular, about 1.15 times wider than preocular. Clypeus, labrum and antenniferous tubercles each with a long, gracile, curved spine (spines of antenniferous tubercles slightly asymmetrical in holotype). Eye small, globular, laterally prominent, far remote from dorsal and ventral outlines of head in lateral aspect, composed of relatively few facets; diatone slightly less than twice as wide as interocular distance. Antenna gracile, segment I longest, about 1.7 times longer than segment II; segment III very short, about 0.15 times as long as segment II; segment IV slightly shorter than half of segment II. Labium: segment I rather stout, approaching anterior margin of eye, segment II view. Scale = 0.5 mm to Figs 14–18 View Figs 14–22 , 0.2 mm to Figs 19–20 View Figs 14–22 , 0.1 mm to Figs 21–22 View Figs 14–22 .

very short, thick, segment III gracile, gradually narrowing apically. Thorax: Pronotum as shown in Figs 14 and 15 View Figs 14–22 , relatively short and stout, about 1.9 times longer than its greatest width (in its anterior half), hind lobe indistinct, hardly developed. Meso- and metathorax short, mesonotum about 0.4 times, metanotum about 0.25 times as long as pronotum, mesonotum with a pair of lateral finger-like projections anteriorly. Legs: Fore leg as in Fig. 14 View Figs 14–22 , rather stout; coxa cylindrical, about 5.5 times longer than its greatest width; trochanter simple, unarmed; femur rather stout, about 6.3 times longer than its greatest width (in its basal third), about 1.43 times longer than coxa, ventral surface armed with two rows of spiniferous processes. Posteroventral series ( Fig. 14 View Figs 14–22 ) composed of short spines inserted on distinctly elongate basal processes, 4 of them very long, about 4–5 somewhat shorter and about 14–15 short; shorter processes situated somewhat more anteriorly than longer ones. First process is relatively short, situated close to basis of ventral surface of femur, its length subequal to its distance from base of fore femur. Anteroventral series composed of about 16–17 short spines inserted on elongate but relatively short basal processes. Fore tibia short, about 1.45 times as long as femur, with a row of small denticles; fore tarsus not segmented, elongate, narrow, about 0.83 times as long as tibia. Mid and hid legs elongate and delicate but relatively short, all tibiae much shorter than body length; tibiae about 1.25 (mid) and 1.3 (hind) times longer than respective femora; tarsi minute. Abdomen of male elongate elliptical ( Figs 16 and 17 View Figs 14–22 ), about 3.7 times longer than wide, tergites III–VI each with a distinct blackish medial tubercle at its posterior border. Tergite VII projecting posteriorly, U-shaped, apically rounded ( Fig. 18 View Figs 14–22 ), nearly completely covering genital capsule. Tergite VIII rather widely exposed in lateral aspect ( Fig. 16 View Figs 14–22 ). Male genital capsule ( Figs 19 and 20 View Figs 14–22 ) tuberculate posteriorly, ventrally and laterally, elongate, genital aperture occupying almost completely its dorsal surface, superoposterior border with a wide, transverse, flattened, posteriorly widely excised plate ( Figs 21 and 22 View Figs 14–22 ). Parameres ( Figs 23 and 24 View Figs 23–28 ) symmetrical, simple, elongate, slightly curved, apically slightly widened, with a distinct tooth in about dorsomedial position. Phallus as in Figs 25–28 View Figs 23–28 , basal plates fused near their middle, struts running along ventral surface of phallobase, apically separated forming two long rod-like structures, strongly sclerotized, widely diverging; phallosoma with about 17 large, stout, strongly sclerotized spines on its dorsal surface; endosoma with a large, elongated ring-like sclerotized structure composed of a large number of minute spines near the bases of the separated parts of the struts, furthermore a small, rounded sclerite situated somewhat basad of it in ineverted position.

Measurements (in mm). Body length 5.1. Length of head from base to apices of maxillary plates 0.69, width of preocular part 0.34, of postocular part (tubercles not considered!) 0.39, diatone 0.47, interocular distance 0.24. Length of labial segments I: II: III = 0.43: 0.18: 0.26. Length of antennal segments I: II: III: IV = 2.01: 1.20: 0.19: 0.56. Length of pronotum 0.81, greatest width 0.43; length of mesonotum 0.32, greatest width 0.30; length of metanutum 0.21, greatest width 0.29. Length of fore coxa 0.83, greatest width 0.15; length of fore trochanter 0.22; length of fore femur 1.19, greatest width 0.19; length of fore tibia 0.54; length of fore tarsus 0.45. Length of mid femur 2.10, of mid tibia 2.62, of mid tarsus 0.15, of hind femur 2.89, of hind tibia 3.77, of hind tarsus 0.15. Length of abdomen 3.0, greatest width 0.81.

Etymology. The specific name, longispina (from Latin longus, long and spina, a spine) refers to the very long spine of the antenniferous tubercle which differentiates the new species from all other species of the genus.

Comparative notes. Within the genus Bargylia , B. longispina sp. n. seems to be more closely related to B. stali and B. grossi than the remaining two species. However, the new species can be very easily recognized by its antenniferous tubercle having a very long spine; in the two related species, the antenniferous tubercle is unarmed or bears only a minute and insignificant tubercle. It also differs from all known species of Bargylia by its fore leg armature: the first spiniferous process of the posteroventral series of the fore femur is relatively short, the second process much longer, but some of the other long processes are of similar size. In other Bargylia species, the first spiniferous process is much longer than any of the remaining processes.

Natural subgroups within Bargylia . The genus Bargylia can apparently be subdivided into two very distinct, most probably monophyletic species groups. The first group ( “ stali -group”, comprising the type species B. stali WYGODZINSKY, 1951 and B. grossi WYGODZINSKY, 1956 ) is characterized by the distinctly tuberculate body, relatively short thoracic segments, stout fore femora with relatively long spiniferous processes, and the presence of a distinct clypeal spine. The second group ( “ longinota -group”, comprising B. babinda WYGODZINSKY, 1956 and B. longinota WYGODZINSKY, 1956 ) is recognized by the rather smooth or inconspicuously tuberculate body, elongated thoracic segments, gracile fore femora with relatively short spiniferous processes, and the absence of a clypeal spine. The combination of characters described above seems enough to warrant the subgeneric separation of the two groups. Nevertheless, a careful examination of all species should be carried out for the proper examination of their relationship. Bargylia longispina sp. n., which is placed with some doubt in Bargylia , cannot be placed to any of the above groups, but seems to be more closely related to the “ stali -group”.

The key presented below will allow the differentiation of the new species from the species groups of Bargylia . For species-level identification of the previously described species of Bargylia , the work by WYGODZINSKY (1966) can be consulted.