Quartinia setositerminalis, Gess, 2011

Gess, Friedrich W., 2011, The genus Quartinia Ed. Andre, 1884 (Hymenoptera, Vespidae, Masarinae) in Southern Africa. Part IV. New and little known species with complete venation, Journal of Hymenoptera Research 21, pp. 1-39 : 22-25

Quartinia setositerminalis sp. n. Figs 70-76

Quartinia sp. F. ( Gess 1996: 250, flower visiting; Gess and Gess 2003: 67, flower visiting.)

Holotype

♂, SOUTH AFRICA: NORTHERN CAPE: Namaqualand, Hester Malan Nature Res[erve] [now Goegap Nature Reserve] (29.37S, 18.00E), 10-11.x.1989 ((D. W. Gess) [AMG].

Paratypes.

SOUTH AFRICA: NORTHERN CAPE: Namaqualand, Hester Malan Nature Res[erve] [now Goegap Nature Reserve] (29.37S, 18.00E), 10-11.x.1989 (F. W. Gess and S. K. Gess), 2 ♀♀ (1 ♀ visiting minute yellow fls of Helichrysum sp., Asteraceae ); same locality and date (D. W. Gess), 2 ♀♀, 4 ♂♂ (1 ♀ visiting pink fls of Leipoldtia sp., Aizoaceae : Mesembryanthema ); Namaqualand, Voëlklip (29.45S, 17.22E), 2.x.1994 (F.W. and S. K. Gess), 1 ♀ (on pink fls of Prenia pallens (Ait.) N. E. Br., Aizoaceae : Mesembryanthema ); Namaqualand, Sors Sors, 9 km NE of Kamieskroon (30.08S, 18.01E), 17.ix.1992 (F. W. and S. K. Gess), 1 ♀ (on white fls of Dorotheanthus bellidiformis (Burm. f.) N. E. Br., Aizoaceae : Mesembryanthema ) - [all AMG]; [Namaqualand], Farm Arkoep, 6 km N [of] Kamieskroon (30.19S, 17.56E), 1-2.x.1990 (C. Eardley), 1♀, 1♂ [SANC]. WESTERN CAPE: Pakhuis Pass (32.08S, 19.02E), 7.ix.1987 (C. D. Eardley) 1 ♂ [SANC].

Diagnosis.

Medium to large (4.4-5.3 mm). Fore wing with Cu1a and 2 m-cu complete and as thick as other veins. Both sexes with thorax and gaster subshiny with coarse punctures; scutellum only gently convex medially. Female with scutellum with pair of pale streaks laterally (in some females joined medially) and lamella pale. Male with mandible white and tip ferruginous; labrum and clypeus wholly white; antennal club with last three flagellomeres black both dorsally and ventrally, markedly set off in colour from rest of antenna; frons with large median white marking and with ocular sinus either maculate or immaculate; sternumVII densely set with short, fine setae and apically with fringe of longer setae.

Description.

Female ( Figs 70, 72, 74 ): Black. The following are yellowish-white: underside of scape, pedicel, proximal flagellomeres and of more proximal flagellomeres of club (if not ferruginous); pronotal dorsum and minute spot at postero-dorsal angle of same; large humeral spot; tegula anteriorly and posteriorly; lateral streaks on scutellum (in some specimens broadly fused postero-medially); scutellar lamella (in some specimens narrowly interrupted medially); posterior bands (almost reaching sides and progressively reduced) on terga I - V; apex of femur and most of tibia of all legs; all but last tarsomere of mid and hind legs. The following are ferruginous: mandible (except base); underside of more proximal of flagellomeres of club (if not yellowish-white); lateral streaks on scutellum (if reduced and not yellowish-white); scutellar lamella medially (if yellowish-white interrupted); tegula medially; sides of tergum I; broad band between posterior yellowish-white band and black base on terga II - V; entire tergum VI; sterna variously; all tarsomeres of fore leg; last tarsomere of mid and hind leg. Wings lightly browned; veins brown.

Length 5.1-5.3 mm (average of 3: 5.2 mm); length of front wing 3.2-3.3 mm (average of 3: 3.3 mm); hamuli 4-5.

Head in front view 1. 4 × as wide as long; with moderately coarse subconfluent punctures and microreticulate interstices. POL: OOL = 1: 0.9. Clypeus 1.5 × as wide as long (to bottom of emargination); convex, markedly raised laterally and distally; anterior margin very shallowly emarginate; antero-lateral angles rounded.

Mesosoma subshiny with coarse punctures, on the pronotum partly subconfluent and separated by less than their diameter, on the centre of the mesoscutum and on the scutellum separated by their diameter or more; interstices minutely microreticulate (shagreened). Tegula with inner posterior corner markedly inwardly produced. Fore wing with Cu1a and 2 m-cu complete and as thick as other veins. Scutellum medially evenly and gently convex.

Male ( Figs 71, 73, 75, 76 ): Black. The following are yellowish-white: mandible (except tip); labrum; clypeus; large marking on lower half of frons immediately above clypeus; macula (variously developed: large, reduced, absent) in ocular sinus; scape (except for small brown streak dorsally), pedicel; proximal flagellomeres and first two flagellomeres of club; anterior margin of pronotum (carried down to humeral angle) and small spot on postero-dorsal angle of same; small triangular spot at top of mesopleuron; tegula anteriorly and posteriorly; lateral streaks on scutellum; scutellar lamella (medially interrupted with ferruginous or black); posterior bands (not reaching sides and progressively reduced) on terga I - VI; distal two thirds of underside and distal half of upper side of fore femur; apex of mid and hind femur; most of tibia of all legs (except for posterior and ventral black streaks. The following are ferruginous: mandibular tip; tegula medially; propodeal angle laterally (in one specimen only); declivous aspect of tergum I (if not black); varying amounts of ground colour of terga II - IV (if not black) and all of ground colour of terga V - VII; all sterna; tarsomeres (progressively darker with ultimate tarsomere dark brown). Wings lightly browned; veins brown.

Length 4.4-4.8 mm (average of 3: 4.6 mm); length of fore wing 3.0-3.1 mm (average of 3: 3.1 mm); hamuli 4-5.

Head in front view 1.4 × as wide as long; POL: OOL = 1: 0.8. Clypeus 1.66 × as wide as long (to bottom of emargination), convex, markedly raised laterally and distally; anterior margin very shallowly and widely emarginate; antero-lateral angles narrowly rounded (almost subangular).

Gaster with tergum VII with a short, median V-shaped slit; lobes flanking slit rounded. Sterna atuberculate; sternum VII densely set with short, fine setae and apically with fringe of longer setae.

Etymology.

The name setositerminalis draws attention to the characteristically densely setose last visible sternum of the male.

Geographic distribution.

Known from the north-western part of the Northern Cape (Namaqualand; winter rainfall region), the collecting localities being sited in the Namaqualand BrokenVeld and the Mountain Renosterbosveld of Acocks (1953), and from the adjoining Western Cape of South Africa, in Macchia (Fynbos).

Floral associations.

Principally Aizoaceae : Mesembryanthema ( Dorotheanthus , Leipoldtia , Prenia ); to a lesser extent Asteraceae ( Helichrysum ).

Nesting.

Unknown.

Discussion.

Sympatric with the generally similar looking Quartinia frontalis , Quartinia scutellaris and Quartinia vagepunctata .

Figures

Figures 70 - 76. Quartinia setositerminalis 70 ♀, lateral view (x 12) 71 ♂, lateral view (x 11) 72 ♀, dorsal view (x 11) 73 ♂, dorsal view (x 11) 74 ♀, head, front view (x 15) 75 ♂, head, front view (x 17) 76 ♂, tergum VII, dorsal view (x 26).