Voconia coronata, 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 : 44-45

Voconia coronata sp. nov.

urn:lsid:zoobank.org:act:13ED6C82-C06A-4DE4-92E3-EAD71C9B8D71

Figs 1–2 , 7 , 9 , 20

Diagnosis

Distinguished from most species of Voconia by the semicircular yellow stripe encircling both ocelli, membranal veins forming Cu-An 1 and M-Cu cells paler than remainder of membrane, and proepimeron with protuberance on posteroventral margin. This species is most similar to two other Oriental species, V. decorata sp. nov. and V. lirophleps sp. nov. It is distinguishable from V. decorata sp. nov. by its distribution in Sumatra and the dark brown, almost black coloration of the body. Despite the holotypes of V. coronata sp. nov. and V. lirophleps sp. nov. being collected within about 106 km of each other, there are several differences, particularly in size. Among our larger series, conspecific Voconia males do not vary more than about ± 1 mm from each other, and V. coronata sp. nov. is about 2 mm longer than V. lirophleps sp. nov. It is distinguishable by the slightly more elongate head (about 1.3 times as long as wide), the pedicel is much longer (about 1.9 times length of head width), maxillary plates directed straight in dorsal view, postocular region is about as long as the eye, labial segment I is long, almost reaching posterior margin of head, wide pronotal collar, long anterior pronotal lobe relative to posterior pronotal lobe (posterior lobe about 1.8 times as long as anterior lobe), scutellum dark with brown apical spine, inconspicuous distal yellow spot on the corium, and the presence of three large spines and many small spines on the posterior row of spines of the hind leg.

Etymology

The specific epithet is the Latin adjective ‘ coronatus, - a, - um ’, meaning ‘crowned’ or ‘encircled’, referring to the yellow ring around the postocular region of the head.

Type material

Holotype INDONESIA • ♀; Sumatra, “ Central Atjeh ” [Aceh], Ketambe ; [3.68° N, 97.66° E]; elev. 400 m; 26–27 Jan. 1974; E.W. Diehl leg.; USI: AMNH_PBI 00170706 ; AMNH.

Description

Male ( Figs 7 , 9 )

BODY LENGTH. About 11.0 mm; macropterous.

COLORATION. Head: dark brown; postocular region dark with a semicircular pale stripe encircling both ocelli; labium nearly as dark as head. Thorax: coloration as head; posterior pronotal lobe lighter than anterior lobe; scutellum dark with brown apical spine. Hemelytron (abducted): clavus dark with distal yellow stripe; corium dark with anteroproximal yellow stripe, posteromedial and small distal yellow spots; membrane uniformly dark; membranal veins forming Cu-An 1 and M-Cu cells paler than remainder of membrane. Legs: dark brown, femora darker. Abdomen: almost black, dorsal laterotergites dark with yellow spots anteriorly.

INTEGUMENT AND VESTITURE. Head and pronotum: finely granulose with sparse, short macrosetae interspersed among sparse pubescence; interocular region with two pairs of macrosetae paramedially; antennifer with short lateral setigerous tubercle; morphologically ventral surface of labium with sparse, long macrosetae. Thorax: anterolateral angles of pronotal collar with macrosetae; scutellar lateral carinae with long setation. Hemelytron: corium with sparse long setation. Legs: posterior row of protuberances on mid and hind femora with three large spines on distal half and more than three small spines. Abdomen: ventral surface pubescent.

STRUCTURE. Head: elongate, 1.3 times as long as wide; anteocular region about one quarter of head length, shorter than postocular region (measured to anterior margin of neck); postocular region in dorsal view about as long as eye, lateral margins gently rounded; pedicel about 1.9 times length of head width; maxillary plates ellipsoidal, adjacent to and surpassing clypeal apex; apices of maxillary plates in dorsal view directed straight; clypeus in dorsal view wider than maxillary plates; clypeal apex round, not narrowed; interocular glabrous markings anterolaterally curved, joined at interocular sulcus paramedially; interocular sulcus in dorsal view bent anteromedially, subtriangular; eye width in dorsal view wider than synthlipsis; eye reaching ventral head margin in lateral view; ventrolateral swelling of buccula without lateral protrusion that surpasses buccular margin, flat margin; labial segment I in lateral view straight, surpassing posteroventral eye margin; morphologically dorsal surface of labial segment II nearly straight, about 0.5 times length of segment I. Thorax: pronotal collar in dorsal view wide medially with anterolateral angles short and flared laterally; anterior pronotal lobe about 0.6 times length of posterior pronotal lobe, lateral margins rounded; glabrous markings on pronotum deeply depressed; median apodeme depression of pronotum shallow, elongated transversely; scutellar spine long, raised; anteriad-directed process of prosternum smoothly rounded, without paramedial lobes; anterior margin of stridulitrum not elongated into protuberance; proepimeron with acute protuberance on posteroventral margin. Legs: fossula spongiosa present on fore and mid legs.

Female

Unknown.

Distribution ( Fig. 20 )

This species is only known from the type locality of Ketambe in the northernmost province of Sumatra, Aceh.

Remarks

The phylogenetic placement of V. coronata sp. nov. is uncertain ( Figs 1–2 ).

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

Fig. 9. 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.