Parathyginus, Dellape & Henry, 2021

Malipatil, M. B., 2021, Revision of Australian Parathyginus with description of two new species, along with first detailed description of aedeagus in the family Heterogastridae (Hemiptera: Heteroptera: Lygaeoidea), Zootaxa 5016 (4), pp. 503-522 : 519

Key to Australian species of Parathyginus

1. Tibiae with three equidistant fuscous annulations ( Figs. 23, 25 )........................... P. kurandae ( Distant, 1918)

-. Tibiae without annulations, at most with basal and apical fuscous areas (e.g., Figs. 5 –7 )............................ 2

2. Head length subequal to pronotal length; male with a median pointed process on posterior margin of pygophore (visible in undissected specimen) ( Fig. 51 ); [usually inhabiting dry interior Australia]....................... P. acuminatus sp. nov.

-. Head length shorter than pronotal length; male without median process on posterior margin of pygophore ( Fig. 12 )....... 3

3. Female scutellum with three ochraceous spots on Y- carina, one round spot on each basal arm and one narrow elongate spot covering apical part of apical arm ( Fig. 29 ); male abdominal venter predominantly bright ochraceous ( Figs. 33 , 35 ); paramere blade sub-basally with one minute dark-tipped tooth on inner surface ( Fig. 38 ); [usually inhabiting rainforest and at relatively higher altitudes]....................................................................... P. australis sp. nov.

-. Female scutellum with one large ochraceous patch covering almost entire Y- carina ( Fig. 1 ); male abdominal venter predominantly fuscous ( Figs. 5 , 9 ); paramere blade without sub-basal tooth ( Fig. 13 )................... P. signifer ( Walker, 1872)

Figures

FIGURES 21–25. Parathyginus kurandae: 21, Type, body dorsal view and labels; 22, 23, male body, dorsal and lateral views; 24, 25, female body, dorsal and lateral views.

FIGURES 5–7. Parathyginus signifer: 5, male body, lateral view; 6, 7, female body, lateral views showing variation in colour markings between specimens from Hinchinbrook Island, Qld.

FIGURES 49–55. Parathyginus acuminatus paratypes: 49–54, male—49, 50, abdomen, dorsal and ventral views; 51, pygophore, posterior view; 52, left paramere, dorsal view; 53, 54, endosoma. 55, spermatheca. Abbreviations: co, conjunctiva; er, ejaculatory reservoir; sd, seminal duct; sp, spermatheca; ve, vesica.

FIGURES 8–13. Parathyginus signifer: 8, 9, male abdomen, tergum and sternum, roman numerals refer to abdominal tergites / sternites; 10, 11, female abdomen, tergum and sternum; 12, male, pygophore, dorsal view; 13, male, left paramere, dorsal view.

FIGURES 29–33. Parathyginus australis: 29–31, female paratype—29, body dorsal view; 30, body, lateral view; 31, anterior part of body, lateral view. 32, 33, male paratype—32, body dorsal view; 33, body, lateral view. 29 & 30, same scale.

FIGURES 34–37. Parathyginus australis, paratypes: 34, 35, male abdomen, tergum and sternum. 36, female abdomen, tergum. 37, pygophore, dorsal view.

FIGURES 38–42. Parathyginus australis, paratypes: 38–41, male—38, right paramere, dorsal view; 39, phallotheca, lateral view; 40, endosoma; 41, distal part of endosoma. 42, female, spermatheca. Abbreviations: er, ejaculatory reservoir; sd, seminal duct; sp, spermatheca; ve, vesica.

FIGURES 1–4. 1, Parathyginus signifer, Lectotype male, body dorsal view; 2, Dinomachus doddi Lectotype male, body dorsal view and labels; 3, same, Paralectotype female, body dorsal view and labels; 4, Parathyginus signifer, male, body dorsal view (Iron Range, Qld).