Parasadoletus, Malipatil, 2020

Malipatil, M. B., 2020, Parasadoletus exsertus, a new genus and species of Heterogastridae from Australia (Hemiptera: Heteroptera: Lygaeoidea), Zootaxa 4878 (3), pp. 595-600 : 596-598

Genus Parasadoletus gen. nov.

( Figs. 1–5, 8–12 )

Type species: Parasadoletus exsertus sp. nov.

Body small, elongate ( Fig. 1 ), above and below covered with fine, rather moderately long, semi-decumbent setae, in addition interspersed with sparse, erect setae particularly on head, pronotum and hemelytra. Head, pronotum, scutellum and thoracic pleura uniformly covered with coarse, roundish punctures.

Head above and below with patches of white, sericeous, moderately long setae; tylus slightly exceeding jugum; bucculae short, flaplike; eyes large, long, almost touching anterior margin of pronotum. First antennal segment exceeding tylus by its apical half. Labium extending to between mid and hind coxae, first segment ending slightly before base of head.

Thorax. Pronotum narrowly carinate laterally, slightly sinuate and constricted in middle laterally, constriction in middle almost indistinct dorsally, posterior margin almost straight. Scutellum triangular, with coarse roundish punctures, foveately impressed at basal angles, basally depressed and excavate, with a triradiate carina. Hemelytra almost fully covering abdomen, narrowly exposing connexiva; clavus with three rows of punctures; corium shiny, anterior margin almost parallel, with one row of punctures along claval margin, other area almost uniformly irregularly punctate, punctures faint in apical third, membrane moderately shiny, basal cell distinct, discal area slightly fuscous, area surrounding this narrowly pale. Thoracic pleura covered with patches of white sericeous long setae; ostiolar peritreme of thoracic scent gland slightly raised, orifice directed posteriad. Legs short, robust, covered with fine erect setae particularly long on femora and tibiae; fore femora heavily incrassate, more so than other femora, shortest of all femora, narrowed at base and at apex, armed with two spinules ventrally in apical third.

Abdomen. All spiracles ventral; connexival areas of sternites V and VI contrastingly light in colour; sternite VII large, divided in middle ( Figs. 5, 8 ); all preceding sternites slightly narrowed in middle compared to sides, not divided in middle ( Fig. 5 ); submedian trichobothria on sternites III and IV almost linear. Dorsum with inner laterotergites present between tergites III–VI ( Fig. 9 ); tergites III–VI uniformly covered with fine punctures all over, VII impunctate; scent gland scars between tergites III–IV almost absent, those between IV–V and V–VI distinct, latter slightly wider ( Fig. 9 ).

Female genitalia. Ovipositor strongly extending as a sclerotized and exposed process beyond medially bilobed sternite VII by about one third its median length ( Fig. 5 ). Spermatheca with a distinct bulb and a long narrow tubular coiled duct ( Fig. 12 ).

Etymology. The generic name is composed of the Latinised Greek prefix para - and the generic name Sadoletus , in allusion to the superficial similarity to the large and widely distributed, primarily Oriental genus Sadoletus Distant, 1903 in general facies and small body size (4–5 mm total length). Gender masculine.

Figures

FIGURES 1–4. Parasadoletus exsertus sp. nov.: 1–3, holotype female, habitus dorsal, ventral and lateral views of body. 4, paratype female, head and thorax, lateral view. Abbreviation: op, ostiolar peritreme.

FIGURES 5–8. 5, Parasadoletus exsertus sp. nov. paratype female, posterior part of abdomen, ventral view. 6, 7, Sadoletus variabilis Gao & Malipatil, female body, ventral view, and 7, posterior part of female abdomen, ventral view, median flaps arrowed. 8, Parasadoletus exsertus sp. nov. paratype female, posterior part of abdomen, ventral view, median flaps arrowed. Abbreviation: ov, ovipositor.

FIGURES 9–12. Parasadoletus exsertus sp. nov. paratype female: 9, abdominal tergum. 10, 11, ovipositor. 12, spermatheca. Abbreviations: b, bulb; d, duct; Ga, gonangulum; 1Gpo, 2Gpo, first and second gonapophysis; 1Gx, 2Gx, first and second gonocoxa; pt VIII, paratergite VIII; 1r, 2r, first and second ramus; sp 8, spiracle.