Species Holgus spiralis Löcker & Larivière, 2006

Holgus spiralis Löcker & Larivière, adult

© Copyright Birgit Löcker. Orange Agricultural Institute.

Museums

Regional Maps

• Holgus spiralis Löcker, B. & Larivière, M.-C. in Löcker, B., Fletcher, M.J., Larivière, M.-C., Gurr, G.M., Holzinger, W.E. & Löcker, H. 2006. Taxonomic and phylogenetic revision of the Gelastocephalini (Hemiptera: Cixiidae). Invertebrate Systematics 20: 59-160 [116].

  Type data:

   Holotype QM T123587 ♂ (coll: B.K. and J.A. Cantrell, 16.x.1972; originally from UQIC), 20mi S of Gayndah, SE Queensland.

Introduction

A small dark species with pale brown wings. It is known from two male specimens collected near Gayndah in SE Queensland. A third male, from Gatton, Queensland, has a variation in the genitalia which raises doubts about it belonging to this species.

Distribution

States

Queensland

IBRA and IMCRA regions

IBRA

Qld: South Eastern Queensland (SEQ)

Ecological Descriptors

Adult: phloem feeder.

Extra Ecological Information

Nymph might be phloem feeder or fungivore.

Diagnosis

Colour. Vertex yellow to light brown lateral carinae paler; face orange brown, carinae paler except for lateral carinae on postclypeus; pronotum yellow in central part, darker in lateral parts, hind border yellow; mesonotum orange brown, darker than rest of body; forewing hyaline white, some parts yellow, apical part of wing with brown margin, cell adjacent to pterostigma brown, sometimes apical cells with brown tinge, veins yellow, tubercles light brown. Morphology. Body length. ♂ 5.3–5.9 mm. Head. Tip of head acutely angled in lateral view. Vertex 1.1× as long as wide; apex broadly rounded; lateral carinae strongly elevated; median carina incomplete, 1/2–3/4 as long as vertex. Lateral carinae of frons slightly elevated; median carina incomplete, ~3/4 as long as frons. Frontoclypeal suture semicircular, median part reaching at least lower margin of antennal scape. Anteclypeus with well developed median carina. Thorax. Pronotum with sinuate or arched carinae; hind margin rectangular. Forewing 3.5–4× longer than wide; costa with 0–5 tubercles; fork of Sc+R basad of or at same level as fork of CuA1+CuA2; 10 apical cells. Hind leg: tibia with 0–4 small lateral spines (without large lateral spines); 1st tarsomere with 11 apical teeth and five platellae; 2nd tarsomere with 10 apical teeth and eight platellae. Male genitalia. Genital styles with inner side of basal arm bearing small tooth. Aedeagus: phallotheca with a long, moderately curved spine arising ventrally near apex, a short, strongly curved bifurcated spine arising laterally above midlength, branches of spine curving in the same direction
with or without a short, slightly curved spine arising ventrally above midlength; flagellum unarmed. (Löcker et al. 2006)

ID Keys

Löcker et al. 2006: 115

Diagnosis References

Löcker, B., Fletcher, M.J., Larivière, M.-C., Gurr, G.M., Holzinger, W.E. & Löcker, H. 2006. Taxonomic and phylogenetic revision of the Gelastocephalini (Hemiptera: Cixiidae). Invertebrate Systematics 20: 59-160 [116]

History of changes