Arge, Schrank, 1802

Koch, Frank & Eardley, Connal, 2011, Revision of the Afrotropical Arge mirabilipes group, with description of two new species and annotations to other Arge species of this region (Hymenoptera: Symphyta: Argidae: Arginae), African Invertebrates 52 (2), pp. 457-457 : 464-467

publication ID	https://doi.org/ 10.5733/afin.052.0213
persistent identifier	https://treatment.plazi.org/id/DA368795-FFAD-FFD9-FE32-51DC60A5FC6D
treatment provided by	Felipe
scientific name	Arge
status

Treatment

Arge View in CoL View at ENA bisignata Konow, 1907

Figs 18–23 View Figs 18–23 , 27 View Figs 24–27

Arge bisignata: Konow 1907: 308. Type locality: [ South Africa] Natal .

Arge tibiale 3DVWHHOV, l9ϭ: ƽƽ8, ¿JV ƻl±ƻ4. 7\SH ORFDOLW\: 6RXWK $IULFD, 0LGGOHIRQWHLQ. Syn. n.

Arge tibialis: Taeger et al. 2010: 141 (correction of spelling).

Redescription:

Female.

Head black; mandible broadly yellow ringed medially; antenna black, dorsal surface of scape brown. Thorax black; metanotum yellow. Legs yellow except for: fore coxa and trochanter as well as mid coxa and trochanter blackish, tarsi black, only fore basitarsomere yellowish with blackish apex. Wings sharply bicoloured, basal half slightly ÀDYHVFHQW‒K\DOLQH DQG DSLFDO KDOI IXVFRXV; VXEVWLJPDO VSRW RI IRUH ZLQJ LQGLVWLQFW, stigma blackish with yellowish centre, costa, subcosta, basal half of venation yellow, rest of venation blackish. Abdomen yellow.

Head very slightly enlarged behind eyes. Antenna 1.3× as long as maximum head width; 3 rd segment enlarged toward apex, and triangular in cross section, interior surface with compressed longitudinal carina, dorsal and ventral surface with weaker compressed longitudinal carina, lateral surface more rounded. POL:OOL = 1.0:0.7–0.9 (0.8 HT); MS:IA = 1.0:2.6–3.4 (2.9 HT). Eyes scarcely converging below, lower interocular distance 1.6× eye length; anterior margin of clypeus shallowly emarginated, VXSUDFO\SHDO DUHD ÀDWO\ SURWUXGLQJ WR SRLQW RI LQWHUDQWHQQDO FDULQDH, LQWHUDQWHQQDO FD‒ ULQDH YHU\ REWXVHO\ ULGJHG EHWZHHQ DQWHQQDH,EHFRPLQJ JUDGXDOO\ ÀDWWHQHG,FRQYHUJLQJ downward, very short, ending about at the ventral margin of toruli. Vertex and gena scattered micropunctate, shining; frons, supraclypeal area, clypeus and malar space densely punctate, subshining; pubescence whitish, about as long as diameter of lateral ocellus. Micropunctures and pubescence of mesoscutum similar to that on vertex. Abdomen smooth and shining. Sawsheath in lateral view rounded at apex ( Fig.18 View Figs 18–23 ), in dorsal view moderately rounded apically, interior surface slightly convex ( Fig. l9 View Figs 6–12 ). /DQFHW DV LQ)LJ. ƻo ZLWK VKRUW ¿OLIRUP WULFKRLG VHQVLOODH, ZLWK DERXW l9 VHUUXODH; serrulae at centre prominent, broadly rounded at apex, with about 17–20 small, sub-basal teeth ( Fig. 21 View Figs 18–23 ).

Length: 9.7–11.7 mm.

Male.

Colouration similar to that of female. Scape and pedicel brown; fore and mid coxae only blackish at base, fore basitarsomere and mid basitarsomere entirely yellow (hind legs are missing).

Head scarcely enlarged behind eyes. Antenna 1.8× as long as maximum head width; 3 rd segment not enlarged toward apex. POL:OOL = 1.0:0.7–0.9. MS:IA = 1.0:3.0–4.0. Eyes scarcely converging below, lower interocular distance 1.4× eye length.

Other features as for female. Penis valve as in Fig. 22 View Figs 18–23 .

Length: 7.5–9.0 mm.

Type material (examined):

Arge bisignata. +RORW\SH: Ƃ ³ Arge bisignata Knw., Natal”, “ Coll. Konow ”; “ Holotypus ” [red]; “GBIF- GISHym, 2951”; “ Holotypus, Arge bisignata Konow, teste: F. Koch, 2009” [red]; “ Arge bisignata Konow, det.: F. Koch, 2009” ( DEI) .

Arge tibialis . +RORW\SH: Ƃ ³7\SH´>UHG FLUFOH@; ³6. $IULFD, 0LGGOHIRQWHLQ, QHDU 1\OVWURRP, lϭ.;,,.l9ƽ, $. L. Capener”, “B. M. Type, Hym., 1.762”; “Brit. Mus., 1957-172.”; “ Arge tibiale Q. VS. Ƃ, -. 3DVWHHOV GHW., 1957”; “ Holotypus, Arge tibiale 3DVWHHOV Ƃ, WHVWH:). Koch, 2011” [red]; “ Arge bisignata. RQRZ Ƃ, GHW.: F. KOCH, 2011” (BMNH).

3DUDW\SH: lƃ ³(. 7UDQVYDDO, (ODQGVKRHN, lƽ±l8.,,.l9ƽϭ, $./. &DSHQHU´ (MRAC).

Other material examined: NAMIBIA: lƃ &DSULYL =LSIHO,.DWLPD 0XOLOR,lƽ±ƻ4.L.l99ƽ, 0. 6QLåHN (01+8). MOZAMBIQUE: ƻ ƃ 5LNDWOD,3. 0DJUHWWL (0&61); lƂ /RXUHQ]R 0DUTXH]>= 0DSXWR@, l9ll, -.%. 3DXOXV; lƃ 0DVLHQH, [LL.l9ƻ; lƃ 1\DND, LL.l9ƻ4, 5.). /DZUHQFH (6$0&). 6287+ $)5,&$: KwaZulu-Natal: lƃ 3LQHWRZQ>ƻ9°49‵6: o°ƽo‵(@ (335,); lƂ 0IRQJRVL>ƻ8°4 ‵6: o°ƽo‵(@, LLL.l9l7,:.(. -RQHV (6$0&); lƂ 0DSXWRODQG, ƻo NP 6 (PDQJX]L>ƻ7°oo‵6: ƻ°4 ‵(@, 0REHOD, ƻ.[LL.ƻooƻ, 0. 6QLåHN (01+8); lƂ 6: RI (PDQJX]L>ƻ7°oo‵6: ƻ°4 ‵(@, ƻ9.L.ƻoo, 0. 6QLåHN (01+8); lƃ 7HPEH (OHSKDQW 3DUN>ƻϭ°ƽϭ‵6: ƻ°ƻ8‵(@, 8.[LL.ƻooƻ, 0. +DODGD (2/0/). =$0%,$: lƂ ƽ NP 6(/LYLQJVWRQH, l7°ƽ4‵6:ƻƽ°ƽl‵(, lƽ.LLL.l99, (. Marais (NMNW). ZIMBABWE: lƂ 6HEDNZH, [L.l9ol, '. 'RGV (6$0&); lƂ 8PWDOL, l9o, $. %RGRQJ (6$0&); lƃ %XODZD\R, l9 ϭ, 5KRGHVLD 0XVHXP (6$0&); lƃ 'RURZD (0XWDUH), ƻ9.[LL.l998, 0. 6QLåHN (OLML).

Distribution: South Africa ( Fig. 28 View Fig ).

Host plant: Unknown. Remarks: The holotype and paratype of A. tibialis were examined, and it was not SRVVLEOH WR ¿QG DQ\ GLIIHUHQFHV IURP A. bisignata; thus, it is synonymised with A. bisignata.

According to Pasteels (1963) the species of the Arge mirabilipes group are characterized by a very short hind basitarsomere, a quarter of the hind tibia length. In A. bisignata the hind basitarsomere is only about a third of the tibia length. Furthermore, 3DVWHHOV (l9ϭ, ¿J. 9) VHSDUDWHG WKHVH VSHFLHV E\ DQ HYHQO\ ZLGHQHG KLQG WLELD RYHU LWV total length. The hind tibia of A. bisignata is not evenly widened over its total length ( Fig. 23 View Figs 18–23 ) and clearly distinct from the medially slightly widened hind tibiae of A. mirabilipes , A. kungveldensis and A. taitaensis ( Fig. 7 View Figs 6–12 ). Furthermore, the sawsheath in dorsal view of A. bisignata is not pincer-shaped, but valvulae 3 are compact, broader at the base and moderately rounded at the apex, as well as with very slightly convex interior surface ( Fig. 19 View Figs 18–23 ). Also, the broadly rounded serrulae of A. bisignata ( Fig. 21 View Figs 18–23 ) are clearly distinct from the other species. Because of these different characters A. bisignata does not belong to the A. mirabilipes group, but rather to the A. petacacia group (Konow 1907; Pasteels 1953).

The variability of A. bisignata is apparent in the pattern of colouration. The tergum 8 of some males is marked with two large black medial spots. In old material the bicolouration of the wings is somewhat bleached and thus slightly contrasted.

The collecting locality “Landshoek” for the paratype of A. tibialis , that was given by Pasteels (1963) is incorrect. The correct locality is “Elandshoek” according to the collecting label of the paratype.