Voconia wegneri ( Miller, 1954 ) Castillo & Rédei & Weirauch, 2022

Castillo, Stephanie, Rédei, Dávid & Weirauch, Christiane, 2022, Pseudocetherinae (Hemiptera: Reduviidae) revisited: phylogeny and taxonomy of the lobe-headed bugs, European Journal of Taxonomy 788 (1), pp. 1-95 : 90-91

Voconia wegneri ( Miller, 1954) comb. nov.

Figs 1– 2 , 3E , 8 , 10 , 20

Kayanocoris wegneri Miller, 1954: 6 , fig. 3.

Revised diagnosis

Distinguished from other species of Voconia by the minute ocelli, occupying 0.12 times length of postocular region; labial segment I swollen subapically on ventral surface; labial segment II swollen ventrobasally and narrowed apically; labial segment III very short (about 0.14 mm long), about 0.2 times length of segment II.

Type material

Holotype INDONESIA • ♂; E Borneo , Balikpapan , Mentawir River; [1.04° S, 116.75° E]; elev. 50 m; 14 Oct. 1950; A.M.R. Wegner leg.; USI: RMNH.INS 1091587 ; NBCN (previously RMNH).

Redescription

Male ( Figs 8 , 10 )

BODY LENGTH. ~ 9.1 mm; macropterous.

COLORATION. Head: dark brown with a semicircular pale stripe encircling both ocelli; labium lighter than head, brown. Thorax: as head; scutellum dark with brown apical spine. Hemelytron (abducted): clavus dark with distal yellow stripe; corium dark with anteroproximal yellow stripe, posteromedial and distal yellow spots; membrane dark with pale V-shaped marking along R and M veins; membranal veins R and M proximally pale. Legs: dark brown. Abdomen: dark brown; dorsal laterotergites dark brown.

INTEGUMENT AND VESTITURE. Head and pronotum: finely granulose with dense, long macrosetae interspersed among dense pubescence; antennifer with short lateral setigerous tubercle; morphologically ventral surface of labium with dense, short macrosetae. Thorax: anterolateral angles of pronotal collar without macrosetae or setigerous tubercles. Legs: posterior row of protuberances on mid and hind femora with four spines on distal half. Abdomen: ventral surface pubescent.

STRUCTURE. Head ( Fig. 3E ): elongate, about 1.5 times as long as wide; anteocular region about half of head length, longer than postocular region (measured to anterior margin of neck); postocular region in dorsal view longer than eye, lateral margins gently rounded; pedicel about 1.1 times length of head width; maxillary plates ellipsoidal, adjacent to and shorter than clypeus; apices of maxillary plates in dorsal view directed straight; clypeus in dorsal view about as wide as maxillary plates; clypeal apex round, not narrowed; interocular glabrous markings anterolaterally curved, joined at interocular sulcus paramedially; interocular sulcus in dorsal view curved and smoothly rounded anteriorly; eye width in dorsal view narrower than synthlipsis; eye reaching ventral head margin in lateral view; ocelli minute, occupying 0.12 times length of postocular region; ventrolateral swelling of buccula without lateral protrusion that surpasses buccular margin, flat margin; labial segment I swollen subapically on ventral surface, surpassing posteroventral eye margin; labial segment II swollen ventrobasally, narrowed apically; morphologically dorsal surface of labial segment II curves ventrally, ~0.2 times length of segment I; labial segment III short, ~0.2 times length of segment II. Thorax: pronotal collar in dorsal view narrow medially with anterolateral angles short, projected forward; anterior pronotal lobe ~0.8 times length of posterior pronotal lobe; glabrous markings on pronotum thin and not deeply depressed; median apodeme depression of pronotum deep, elongated transversely; scutellar spine long, subhorizontal; anteriad-directed process of prosternum smoothly rounded, without paramedial lobes; anterior margin of stridulitrum not elongated into protuberance; proepimeron with smoothly rounded posteroventral margin. Legs: fossula spongiosa present on fore legs, unknown on mid legs.

Female

Unknown.

Distribution ( Fig. 20 )

This species is only known from the type locality in Eastern Borneo.

Remarks

The holotype remains at the NBCN under loan restrictions; habitus photographs were used to evaluate this species concept. Most closely resembles the two species from New Guinea, V. bracata sp. nov. and V. typica . These three species form a poorly supported clade in our analyses ( Figs 1–2 ). This hypothesis should be further tested with additional material and molecular data.

Figures

Fig. 1. Strict consensus tree resulting from equal weighting analysis. Jackknife values over 51 are reported for tree one of eight.

Fig. 2. Tree resulting from implied weighting analysis using K = 12 with characters unambiguously optimized. Symmetric resampling values over 51 are represented for trees obtained with K = 3, K = 6, K = 9, and K = 12 analyses. Characters and character states are described in pp. 11–22. Specimens not to scale.

Fig. 3. Morphological characters. A–D. Head in dorsal view. A. Gerbelius nr. confluens. B. Voconia decorata sp. nov. C. Voconia pallidipes Stål, 1866. D. Voconia schoutedeni (Villiers, 1964) comb. nov. E–G. Head in lateral view. E. Voconia wegneri (Miller, 1954) comb. nov. F. Voconia dolichocephala sp. nov. G. Gerbelius typicus Distant, 1903. H. Voconia loki sp. nov., head and pronotum in dorsal view. I–J. Prosternum in ventrolateral view. I. Voconia mexicana sp. nov. J. Voconia bracata sp. nov. K–L. Pronotum in dorsal view. K. Voconia conradti (Jeannel, 1917) comb. nov. L. Voconia tuberculata sp. nov.

Fig. 8. Dorsal habitus of holotypes of Voconia Stål, 1866 species with distribution: purple = Afrotropical region, green = Australasian region, blue = Neotropical region, pink = Oriental region. Scale bars = 3 mm.

Fig. 10. Lateral habitus of species of Voconia Stål, 1866. Scale bars = 3 mm.

Fig. 20. The distribution of species of Gerbelius Distant, 1903 and Voconia Stål, 1866 in Southeast Asia.