Ectomocoris fuscatus Malipatil & Liu, 2023

Malipatil, M. B., Liu, Yingqi & Cai, Wanzhi, 2023, Revision of Australian Ectomocoris with the description of nine new species (Hemiptera: Heteroptera: Reduviidae), Zootaxa 5263 (4), pp. 451-504 : 468-472

Ectomocoris fuscatus Malipatil & Liu , sp. nov.

( Figs. 11–13 )

Type specimens. [ brachypterous unless indicated otherwise]. Holotype female, Australia, Queensland, 26.53S 152.01E Blackbutt Range 1 km E Benarkin, eucalypt forest litter in drain, 19.vi.1982, L. Hill ( QM) . Paratypes: QUEENSLAND. 1 female, Emu Vale area , i.1961, S. Henry ( MV) ; 1 male, Brisbane , 6.vii.15, H. Hacker, 1 male, same except 17.vi.11 ( QM) ; 1 macropterous male, Brisbane , 17.vi.11 ( QM) . NEW SOUTH WALES. 2 macropterous males, N.S. Wales ( MV) ; 1 male, Eungai , x-xi.1928 ( QM) ; 1 male, Penrith 5 km SW, 33 47S 150 39E, from grass clippings Tom Gush Collection 3078, 14.vii.1991, Tom Gush ( ANIC) . WESTERN AUSTRALIA. 1 male, 200 ml north Carnarvon, Yannarie Crk , 24.x.1905, W. H. Butler ( WAM) .

Description.

Brachypterous male and female ( Fig. 11 )

Colouration ( Fig. 11 ): Black, with yellow as follows: connexiva with very small patch covering about 1/4 anterior area of segments III–VII, (dorsally yellow area extending to only about half width of connexivum), and brachypterous hemelytra with a subbasal large oblique median area, but entire claval area, lateral and broad posterior hemelytral area fuscous to black.

Scutellar arch and pronotum except stripes shiny black. Head and body including abdomen generally covered with fine short pubescence, with sparse longer bristles obvious on appendages.

Structure ( Figs. 11 , 13 ): Body small, robust.

Head: elongate, wholly covered with short whitish pilosity and sparse longer bristly setae, prominent on mandibular plates, dorsal aspect of first labial segment, and clypeus and dorsum of head. Anteocular region elongate triangular, clypeus slightly elevated above mandibular plates. Interocular region with arcuate convex sulcus at posterior border of eyes. Postocular region almost rounded to neck. Neck with lateral tubercles not obvious. Ventral surface of head tumid before eyes. Antennae with short whitish pilosity and sparse longer setae. Scape thickest, pedicel thinner, basi-and distiflagellum thinnest. Eyes moderately developed, reniform, not reaching ventral margin in lateral view. Ocelli small, not conspicuously raised, separated from each other by about twice diameter of single ocellus, separated from eye by about the same distance. Labium with second visible segment tumid narrowing distally, second and third sparsely covered with longish setae.

Thorax: Anterior lobe of pronotum with collar armed with rounded tubercles at lateral ends, integument smooth, sulci indistinct, except shallow middle long sulcus in basal half.Posterior pronotal lobe arcuately quadrate, integument finely rugulose, with short pilosity, humeri rounded, posterior margin almost smoothly rounded. Pronotum densely pilose laterad of labial groove. Scutellum triangular, disc deeply depressed, sides carinate, integument pilose, armed with strongly roundly pointed and projected horizontal apex, carinate margins and apex with sparse long bristles. Propleuron with integument smooth, pilose, set off from dorsal surface by a carina.Mesopleuron integument minutely indistinctly granulate, sparsely pilose. Metapleuron with integument more densely granulate but granules not striate, metapleural sulcus strongly bicarinate and curved, pilose with silvery dense hairs posteriorly. Mesosternum with disc raised, metasternum with disc more or less tumid. Brachypterous hemelytra extending to about half length on second to about one third length on third abdominal tergite.

Legs: Fore leg with coxa contiguous, with whitish pilosity; trochanter unarmed; femur strongly fusiform, greatly incrassate near base narrowing distally, much thicker than other femora, armed below with rows of bristly setae, in addition sparsely pilose laterally and above; tibia cylindrical, more or less straight but apex slightly reflexed, fossula spongiosa present, occupying about 3/4 tibial length; tarsal segments cylindrical, denser short pilosity ventrally. Mid leg with coxa globular, femur only slightly thickened, tibia with short whitish pilosity for whole length, with fossula spongiosa about half its length. Hind leg with femur cylindrical, not at all thickened, tibia with brush of seta, denser at apex.

Abdomen: In male elongate oval, sternum not carinate in midline, sternite VII on its left side with an extragenital submedian sclerotized cuticular process and almost opposingly adjacent to it is a slightly swollen cuticular area armed with a tuft of short bristly hairs ( Fig. 11E ). Connexivum with golden pilosity as elsewhere on sternum, abdominal sterna and terga entire. Spiracles situated below connexival suture, about halfway between anterior and posterior margin of each segment. Each spiracle postero-ventrally with small circular shiny impressed area, also a smaller irregularly shaped impressed spot closer to anterior margin of each abdomen sternum ( Fig. 11C ). These spots present on corresponding segments on dorsum also but are of similar size. Dorsum with three small scent gland scars of subequal width on terga III–IV, IV–V and V–VI ( Fig. 11D ). In female, same as male, except sternum shiny smooth, intersegmental sutures strongly curved anteromedially, all sterna appearing narrow medially except VII very enlarged ( Fig. 11B ).

Male genitalia ( Fig. 13 ): Median pygophore process broad blade-like, short and straight, apex sharp, broad with basal paired pointed knobs ( Fig. 13A ). Parameres wide falcate in shape ( Fig. 13B&C ), left paramere ( Fig. 13B ) longer than right paramere ( Fig. 13C ). Phallus ( Fig. 13D–F ) in resting condition with basal plate bridge slightly longer than basal plate ( Fig. 13D ); pedicel nearly straight and of similar length with basal plate ( Fig. 13E ); dorsal phallothecal sclerite broad, apex blunt ( Fig. 13D ), lateral phallothecal sclerite with two distinct processes at basal half of inner margin, upper one with rounded apex and lower one sharp ( Fig. 13F ).

Macropterous male ( Fig. 12 )

Colouration ( Fig. 12 ): Black, with yellow as follows: connexiva as in brachypterous form, hemelytra with corium bright yellow, clavus and a small patch on interior disc of corium and very narrowly extending along inner margin and expanding to cover almost entire membrane fuscous.

Other details as in brachypterous form. Hemelytra well exceeding abdomen, almost entirely covering connexiva ( Fig. 12A ).

Measurements: [of holotype female brachypterous, followed by paratype male brachypterous and paratype male macropterous]. Body length 9.67 (♀), 9.40 (♁), 10.45 (♁); maximum width of abdomen 2.96 (♀), 2.96 (♁), 3.27 (♁); length of head 1.82 (♀), 1.82 (♁), 1.82 (♁); length of anteocular region 0.76 (♀), 0.72 (♁), 0.82 (♁); length of postocular region 0.45 (♀), 0.45 (♁), 0.39 (♁); width of head across eyes 1.22 (♀), 1.21 (♁), 1.17 (♁); width of interocellar space 0.22 (♀), 0.25 (♁), 0.17 (♁); length of eye in dorsal view 0.49 (♀), 0.56 (♁), 0.57 (♁); width of eye in dorsal view 0.30 (♀), 0.34 (♁), 0.34 (♁); lengths of antennal segments I–IV 0.87 (♀), 0.90 (♁), 0.80 (♁) / 1.44 (♀), 1.74 (♁), 1.78 (♁) / 1.48 (♀), 1.67 (♁),? (♁) / 1.52 (♀), 1.90 (♁),? (♁); length of visible labial segments I–III 0.64 (♀), 0.60 (♁), 0.60 (♁) / 1.02 (♀), 1.14 (♁), 1.02 (♁) / 0.48 (♀), 0.55 (♁), 0.56 (♁); length of pronotum 2.35 (♀), 2.47 (♁), 2.77 (♁); length of anterior pronotal lobe 1.93 (♀), 2.01 (♁), 1.97 (♁); length of posterior pronotal lobe 0.41 (♀), 0.42 (♁), 0.76 (♁); length of scutellum 0.83 (♀), 0.83 (♁), 1.17 (♁); maximum width of scutellum 0.76 (♀), 0.80 (♁), 1.63 (♁); length of hemelytra 1.93 (♀), 2.05 (♁), 6.24 (♁); length of fore tibia 1.82 (♀), 1.90 (♁), 2.01 (♁); length of fossula spongiosa on fore tibia 1.52 (♀), 1.44 (♁), 1.55 (♁).

Distribution. Australia (Queensland, New South Wales and Western Australia).

Etymology. The species epithet is the Latin adjective fuscatus (meaning ‘darkened’), referring to the entirely fuscous clavus.

Figures

FIGURE 11. Ectomocoris fuscatus Malipatil & Liu, sp. nov., brachypterous form.A–C, holotype, female, habitus; D, paratype, male, habitus; E, paratype, male, abdomen.A, D, dorsal view; B, ventral view; C, E, lateral view.Blue arrow indicates extragenital process.

FIGURE 12. Ectomocoris fuscatus Malipatil & Liu, sp. nov., paratype, macropterous male. A–C, habitus; D, abdomen. A, dorsal view; B, lateral view; C, D, ventral view. Blue arrow indicates extragenital process.

FIGURE 13. Male genitalia of Ectomocoris fuscatus Malipatil & Liu, sp. nov.A, pygophore; B, left paramere; C, right paramere; D–F, phallus. A, E, F, lateral view; B, C, outer ventrolateral view; D, dorsal view.Abbreviations: bp, basal plate; bpb, basal plate bridge; dps, dorsal phallothecal sclerite; kb, knob on median pygophore process; lps, lateral phallothecal sclerite; mpp, median pygophore process; ped, pedicel; st, struts.