Indopamphantus, Malipatil, M. B., 2017

Malipatil, M. B., 2017, Indopamphantus makutaensis, a new genus and species, and Indopamphantini, a new tribe of Pamphantinae (Hemiptera: Heteroptera: Geocoridae), as the first representative of the subfamily from the Oriental Region, Zootaxa 4242 (2), pp. 281-298 : 282-283

Genus Indopamphantus gen. nov.

Type-species: Indopamphantus makutaensis sp. nov.

Body elongate, slender, ant mimetic ( Figs. 1, 2 ).

Head: Evenly sloping downward from posterior margin ( Fig. 2 ), vertex flat, lacking any indication of lateral or median carinae ( Fig. 3 ); juga faintly carinate ( Fig. 3 ); bucculae small, produced near base as flaps ( Fig. 4 ), then gradually diminishing posteriorly to almost to surface of head near base of antenna; head below medially broadly shallowly concave and with a narrow linear median groove for receipt of labium ( Fig. 5 ); eyes somewhat reniform and curving backward over anterolateral corners of pronotum; slightly stylate, touching pronotal margin (e.g., Fig. 3 ). Labium with 3rd segment shortest. Labrum slender, about as long as 1st labial segment ( Fig. 4 ). Antenna with 1st segment shortest, 2nd and 4th subequal ( Figs. 5, 6 ).

Thorax: Pronotum with broad deep median transverse impression at about half length, lateral margins sinuate, evenly rounded and non-carinate ( Fig. 3 ). Thoracic pleura with sparse, coarse punctures ( Fig. 8 ), metathoracic scent gland auricle short and rounded projecting above surface of pleuron with spout turning upwards, opening narrow and directed posterior; evaporative area dull and distinct ( Fig. 8 ). Scutellum with median impression on basal 1/3 area, coarse deep punctures on sides and on posterior area, the latter slightly projecting above surface (e.g., Fig. 7 ). Hemelytra hyaline ( Fig. 9 ), reaching but not exceeding abdomen ( Fig. 1 ); corium with more or less three rows of thick-set brown punctures, first row on basal third running near costal margin, then somewhat deviating from it, second row in the middle, third near claval suture and indistinctly continuing from apex along apical margin of corium to apex of first row; clavus with two rows of coarse punctures, one complete row along claval suture, 2nd row complete on inside apical, inner margin impunctate ( Fig. 9 ). Hind wing ( Fig. 10 ) narrowed, venation reduced, hamus and intervannals absent, vannal folds indistinct, radius (? or R+M) long, extending to distal half of wing, anterior and posterior vannals distinct but fused on basal area, jugal lobe small and jugal vein absent, cubitus indistinct, the leading margin (subcostal or? Sc+R) sclerotized and greatly narrowed towards distal end of discal cell, corresponding to the basal constriction of abdomen ( Fig. 1 ). All femora almost similarly uniformly incrassate, unarmed ( Figs. 1, 2 , 5 ).

Abdomen: Vasiform ( Figs.1 , 11, 12 , 17, 18 ). First visible (i.e., second) segment strongly constricted to form a parallel-sided tube, and strengthened with longitudinal ridges on ventral surface, appearing like a node as in ants ( Figs. 1, 2 , 12 ). Spiracles II and III dorsal on connexiva ( Figs. 11 , 17 ), IV, V, VI and VII ventral ( Figs. 11 , 17 ). Sutures between all tergal segments 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 (e.g., Figs. 11 , 17 ). Inner laterotergites present, very narrow particularly adjoining terga III to VI ( Figs. 11 , 17 ). Sterna II, III and IV with intersegmental sutures faint and not fused, sutures reaching abdominal margin ( Figs. 12 , 18 ). Trichobothria on sternum III in loose triangle and those on IV almost linear to open triangle ( Figs. 12 , 13 ), variable in spacing and degree of development, sometimes one trichobothrium reduced or absent (e.g., Fig. 13 ); trichobothria on V, VI and VII are sublateral, those posterior to spiracle one above the other, spiracle of V and VI situated almost equidistant between anterior and posterior trichobothria, all trichobothrial setae very long.

In male, anterior margin of VII sternum internally with median broad process extending almost to entire length of VI ( Fig. 18 ). In female, suture between IV–V and V–VI broadly overlapping, suture between III–IV slightly corrugated in middle; seventh sternum cleft with ovipositor ( Fig. 12 ).

Female genitalia. Spermatheca with apical bulb heavily sclerotized ( Fig. 14 ), almost spherical, lacking flanges, duct near base of bulb short, saccoid, uniformly moderately sclerotized and tubular gradually narrowing to join a basal unevenly expanded clear membranous duct that is short and slightly wider than previous duct ( Fig. 14 ).

Male genitalia. Pygophore sclerotized anteriorly, gradually rounded posteriorly, lacking processes ( Fig. 20 ). Paramere ( Fig. 21 ) slender, with dorsal flange more prominent than ventral lobe, which has long setae, blade narrowly pointed, sickle-shaped. Aedeagus ( Figs. 22 ) with phallotheca moderately sclerotized on basal area, body and wings of ejaculatory reservoir well developed, neck well developed, no holding sclerites present, conjunctiva membranous with vesica adjoining helicoid process with two pairs of leaf-like processes, helicoid process with about 2 coils, gonoporal process beyond helicoid process with 2–3 large coils, secondary gonopore simple, only slightly flaring ( Fig. 23 ).

Figures

FIGURES 23. Indopamphantus makutaensis, paratype male: aedeagus, apical part enlarged.

FIGURES 1 − 2. Indopamphantus makutaensis, paratype male: 1, habitus, dorsal view; 2, habitus, lateral view.

FIGURES 3 – 4. Indopamphantus makutaensis, paratype male: 3, head and pronotum, dorsal view; 4, head and pronotum, lateral view.

FIGURES 5 – 6. Indopamphantus makutaensis, paratype male: 5, head and pronotum, ventral view; 6, Antenna.

FIGURES 7 – 8. Indopamphantus makutaensis, paratype male: 7, scutellum and base of hemelytra, dorsal view; 8, metathoracic pleura showing scent gland auricle (arrowed) and evaporative area.

FIGURES 9 – 10. Indopamphantus makutaensis, paratype female: 9, right hemelytra; 10, hindwing. Figs 9 & 10 to same scale.

FIGURES 11 − 12. Indopamphantus makutaensis, paratype female: 11, abdominal terga (white arrows indicate spiracles); 12, abdominal sterna. Abbreviations: T 2 to T 7, terga 2 to 7; S 2 to S 7, sterna 2 to 7.

FIGURES 17 − 18. Indopamphantus makutaensis, paratype male: 17, abdominal terga (white arrows indicate spiracles); 18, abdominal sterna. Figs 17 & 18 to same scale.

FIGURES 13 – 14. Indopamphantus makutaensis, paratype female: 13, basal part of abdominal sterna showing trichobothria; 14, spermatheca. Abbreviations: S 2 to S 4, sterna 2 to 4.

FIGURES 19 – 20. Indopamphantus makutaensis, paratype male: 19, basal part of abdominal sterna showing trichobothria; 20, pygophore, dorsal view.

FIGURES 21 – 22. Indopamphantus makutaensis, paratype male: 21, paramere; 22, aedeagus, ventral view.