Paraindopamphantus bruneiensis, Malipatil & Scudder, 2018

Malipatil, M. B. & Scudder, G. G. E., 2018, ParaindOPaMPHantus bruneiensis gen. nov. et sp. nov., as the first representative of the subfamily Pamphantinae from South East Asia (Hemiptera: Heteroptera: Geocoridae: Pamphantinae: Indopamphantini), Zootaxa 4415 (1) : -

Paraindopamphantus bruneiensis sp. nov.

( Figs. 1–17 )

Type specimens: Holotype female, BRUNEI, Bukit Sulang, nr Lamunin, N.E. Stork, BM 1982-388 fogging 20.viii–10.ix.1982; ‘ insecticide fogging Tree 16. Dipterocarp. Shorea johorensis Foxw. ’, in NHM.

Description. Body ground colour black, shiny to sub-shiny ( Figs. 1 & 2 ). Head above postero-laterally and behind eyes with pale markings. Eyes reddish-fuscous. Antennae with distal 2 segments fuscous with basal areas lighter as for 2nd and part of 1 st segment ( Fig. 4 ). Pronotal posterior lobe with a median elongate light patch as in Fig. 3 . Scutellum uniformly black. Hemelytra as in Fig. 8 , corium with 3 broadly spaced light bands across; membrane with narrow dirty white margin and with a dirty white narrow band across near its base ( Fig. 8 ). Legs with coxae fuscous, femora mostly fuscous, basal area of mid and hind femora pale, tibiae fuscous, tarsi pale.

Body and appendages clothed with numerous elongate, upright, golden setae. Head above and pronotum covered with yellow setae. Head ventrally with a few sparse setae on either side of swollen gular areas. Antennal segments covered with short dense setae. Legs, particularly femora and tibiae with long yellow shiny setae, tibia with shorter setae; thorax ventrally without setae, but abdomen ventrally with bristly setae.

Measurements: holotype female.

Body: Very elongate, linear ( Figs. 1 & 2 ), length 7.90, maximum width across abdomen 1.38, minimum width across wings on second abdominal segment 0.69.

Head: Above smooth, without punctures but with one pair of faintly depressed short lines in anterior half well above juga ( Fig. 3 ), with tylus rounded and as long as juga, eyes large, occupying most of lateral surface of head but ending well before rounded base of head; length head 0.96; width across eyes 1.44; interocular space 0.87; interocellar space 0.64; eye-ocellar space 0.05; eye length 0.69; eye width 0.29. Labium slightly exceeding fore coxae, 2nd segment reaching base of head; length of segments: I 0.50; II 0.52; III 0.34; IV 0.43. Length of labrum 0.50. Antennae with 1 st segment very short, slightly exceeding apex of tylus, 3rd and 4th much thicker than basal two segments, 3rd segment club shaped and densely covered with erect bristles; length of segments: I 0.23; II 0.78; III 0.66; IV 0.73.

Thorax: Pronotum ( Fig. 3 ) with posterior margin evenly and shallowly concave in middle, anterior lobe smooth, shiny, except broad anterior collar that is dull and non-shiny, posterior lobe smooth, without punctures; median length 2.07 (anterior lobe 0.80, median stalk 0.40, posterior lobe 0.87); width posterior margin 1.17; width anterior margin 0.87. Thoracic scent gland evaporative area as in Fig. 7 . Scutellum length 0.59; width 0.50. Hemelytra generally narrowed with lateral margins concave and highly constricted behind level of claval commissure ( Fig. 8 ) and behind at about base of abdomen and second abdominal segment ( Fig. 8 ); corium elongately tapering to reach abdominal tergum 3, apical corial margin almost straight, with costal margin gradually slightly dilated, widest at about mid length; length of hemelytra 4.60; length of corium 2.30; claval commissure 0.46; membrane shiny, with 3 faint longitudinal veins ( Fig. 8 ); width membrane 1.15.

Abdomen: Gradually widened from anterior margin of segment III to V, then gradually narrowed posteriorly ( Fig. 10 ). Tergum uniformly sclerotized ( Fig. 10 ); abdominal sternum V broad and complete, sternum VI in female only slightly narrowed mesally by ovipositor but complete anteriorly ( Figs. 12–14 ), uniformly sclerotized ( Fig. 14 ).

Female genitalia: As in generic description ( Figs. 15–17 ). Spermatheca with apical bulb heavily sclerotized, spherical, lacking flanges, duct near base of bulb moderately long, saccoid, then narrowing to a 2-3 turned tube, uniformly lightly sclerotized ( Fig. 15 ).

Nymph ( Figs. 18–21 ).

Specimen examined: One fifth instar nymph, BRUNEI, Bukit Sulang, nr Lamunin, N.E. Stork, BM 1982-388 fogging 20.viii–10.ix.1982; ‘ insecticide fogging Tree 16. Dipterocarp. Shorea johorensis Foxw. ’, in NHM.

Description. Body ground colour reddish to straw coloured, sub shiny as in Figs. 18 & 19 . Head and pronotum with sparse setae, antennae and legs with denser and longer setae ( Fig. 18 ).

Body: Very elongate, strongly myrmecomorphic ( Figs. 18 & 19 ), length 5.52, maximum width across abdomen 1.33.

Head: Above smooth, without punctures (e.g., Fig. 20 ), covered with sparse setae, with eyes large, occupying most of lateral surface of head but ending well before rounded base of head, not nearing pronotum; length head 1.01; width across eyes 1.28; interocular space 0.69; eye length 0.57; eye width 0.27. Labium slightly exceeding fore coxae, all segments slender; length of segments: I 0.27; II 0.39; III 0.27; IV 0.39. Labrum as long as 1 st labial segment, length 0.27. Antennae with 1 st segment very short ( Fig. 21 ), slightly exceeding apex of tylus; length of segments: I 0.36; II 0.62; III 0.52; IV 0.62.

Thorax: Pronotum with narrow lateral carina ( Figs. 18 & 19 ), posterior margin with a pair of large up-curved spine-like processes, anterior lobe broader and larger than posterior lobe, smooth, shiny, collar dull and non-shiny ( Fig. 19 ); below with a narrow median groove for receipt of labium; median length 1.15 (anterior lobe 0.50; posterior lobe 0.35); width at posterior margin 0.64; width at anterior margin 0.92. Wing pads with bases each with a blunt dorsal swelling ( Fig. 19 ), length of wing pads 2.66.

Abdomen: Gradually widened from anterior margin of segment III to V, then gradually narrowed posteriorly ( Figs. 18 & 19 ); very narrow, tubular and with a distinct swollen node around junction of thorax and abdomen as in Fig. 19 . Sutures between all abdominal terga distinct, those between terga III-IV only slightly and those between IV-V and V-VI strongly curved caudad from margin to meson and with distinct scent gland scars which are subequal (the latter fractionally wider) in width, scar between III-IV indistinct ( Figs. 18 & 19 ).

Distribution. Brunei on the island of Borneo.

Etymology. The new species name proposed here, P. bruneiensis , alludes to the country where the species has been collected.

Notes. Both the holotype female and the fifth instar nymph were collected from the canopy of Shorea johorensis Foxw. trees. Shorea johorensis , commonly known “Light Red Meranti”, belongs to the plant family Dipterocarpaceae . It is a large emergent tree growing typically to 65 m tall. It produces a high-grade light red meranti timber and for this reason it is a priority plantation tree in Indonesia. It is found in Indonesia (Kalimantan, Sumatera); Malaysia (Peninsular Malaysia, Sabah, Sarawak), and is a critically endangered species ( Ashton 1998).

Figures

FIGURES 1–2. Paraindopamphantus bruneiensis, holotype female:1, habitus, dorsal view; 2, habitus, lateral view.

FIGURES 3–4. Paraindopamphantus bruneiensis, holotype female: 3, head and pronotum, dorsal view; 4, head and part of pronotum, lateral view. gs, gular swelling.

FIGURES 5–6. Paraindopamphantus bruneiensis, holotype female: 5, head, ventral view; 6, gular swelling, enlarged. gs, gular swelling.

FIGURES 7–8. Paraindopamphantus bruneiensis, holotype female: 7, meso- and metathoracic area, lateral view; 8, posterior part of thorax and abdomen, dorsal view.sgsp, scent gland spout; ssp, scutellar spine.

FIGURES 9–10. Paraindopamphantus bruneiensis, holotype female: 9, part of thorax and abdomen, ventral view; 10, abdominal dorsum. sgs, scent gland scar; sgsp, scent gland spout; II–VII, abdominal tergites.

FIGURES 11–12. Paraindopamphantus bruneiensis, holotype female: 11, abdominal terga; 12, abdomen, lateral view. sgs, scent gland scar; sp, spiracle; II–VII, abdominal tergites.

FIGURES 13–14. Paraindopamphantus bruneiensis, holotype female, abdominal venter. tr, trichobothria; III–V, abdominal sternites.

FIGURES 15–17. Paraindopamphantus bruneiensis, holotype female: 15, spermatheca; 16,17, ovipositor. Abbreviations: ga, gonangulum; 1gpo, 2gpo, first and second gonapophysis; 1gx, 2gx, first and second gonocoxa; 1r, 2r, first and second ramus; sb, spermathecal bulb; spd, spermathecal duct.

FIGURES 18–19. Paraindopamphantus bruneiensis, fifth instar nymph: 18, dorsal view; 19, lateral view; ms, mesonotal swelling; psp, pronotal spines; tas, thoracic-abdominal swelling; wp, wing pad.

FIGURES 20–21. Paraindopamphantus bruneiensis,fifth instar nymph:20, head, dorsal view; 21, right antenna.