R. M. Bohart and L. S. Kimsey, 1982 · 9 Holopyga ventralis Click on map for details about points. IDnature guide Chrysididae Links Hosts 80x5 - 240x3 - 240x4 - 320x1 - 320x2 - 320x3 - 640x1 - 640x2 Set display option above. Click on images to enlarge. R. M. Bohart and L. S. Kimsey, 1982 · 9 Holopyga ventralis © Copyright Sheryl Pollock 2011 · 7 Holopyga ventralis, Cuckoo Wasp © Copyright Sheryl Pollock 2011 · 7 Holopyga ventralis, Cuckoo Wasp Native Bee Inventory and Monitoring Lab; Photographer: Josh · 1 Holopyga ventralis Native Bee Inventory and Monitoring Lab; Photographer: Josh · 1 Holopyga ventralis, head Native Bee Inventory and Monitoring Lab; Photographer: Josh · 1 Holopyga ventralis, abdomen Native Bee Inventory and Monitoring Lab; Photographer: Josh · 1 Holopyga ventralis, top 10 thumbnails  •  slide show Overview Taken from: R. M. Bohart and L. S. Kimsey. 1982. A Synopsis of the Chrysididae in America North of Mexico. Holopyga ventralis Say Hedychrum ventrale Say 1824:330. Pennsylvania (type lost). Hedychrum aspera Brulle 1846:52. Holotype female “N. Amer.” (Paris). Holopyga dohrni Dahlbom 1854:48. Type? Locality here restricted to New York (Lund). Holopyga compacta Cresson 1865:304. Type female?, Colorado (ANSP). Discussion: The most widespread species of Holopyga in North America, ventralis can be recognized by the multidentate tarsal claws (with four to five subsidiary teeth) (fig. 27), large size (6-10 mm long), long F-I (three or more times as long as wide), and mostly or all dark brown sterna. Based on the tarsal claw dentition, strongly arched medial vein, and abdominal conformation, there is a close relationship to the generotype, gloriosa. (Fabricius). However, the latter has a red abdomen. Host: ground-nesting Sphecidae: Bicyrtes quadrifasciata (Say) and B. fodiens (Handlirsch) (Evans 1966). Material examined: 452 males, 247 females. Distribution: Found throughout North America, as far north as Alberta and south to El Salvador, ventralis seems to be commonest in the western part of our country. Collection dates are March through September. Holopyga Dahlbom Holopyga Dahlbom 1845:4. Generotype: Holopyga amoenula Dahlbom 1845 ( Chrysis gloriosa Fabricius 1793), designated by Ashmead 1902. Hedychrum of Say, in part. Diagnosis: Hindtarsal claw with two to five subsidiary teeth; forewing medial vein strongly arched, almost forming a right angle (fig. 22) or a little more obtuse (mimeca, fig. 23); forefemur angled and carinate beneath; scutellum without anterior ridge; midtibia and hindtibia without discrete pits on inner surface (mimeca has a shallow depression), female S-III without a posteromedial lobe or knob. Discussion: This is a difficult genus taxonomically, with a large amount of individual variation in size, color, and punctation. Although related to Muesebeckidium, Holopyga is probably the more primitive of the two, having fewer derived characteristics. Each of the characteristics listed in the diagnosis finds a counterpart in some species of related genera, but none has more than one of the combination of claw, medial vein, and forefemur features. Also, Holopyga has the mesopleuron projecting more sharply forward (for reception of the forefemur) than its relatives except Muesebeckidium. It is interesting that Holopyga ventralis, a large and widespread species in the Nearctic Subregion is quite similar (except in abdominal coloration) to the palearctic generotype, gloriosa. Unlike other elampine genera, Holopyga are relatively evenly distributed throughout faunal regions of the world. As far as known, hosts are Sphecidae. In our area only the bembicin wasp, Bicyrtes, has been recorded. Key to species of Holopyga 1. F-I 2.5 to 3.5 times as long as broad (figs. 22, 25), body length usually more than 6 mm, subantennal distance 1.0 MOD or less …………………………………………..2 F-I not more than 2.3 times as long as broad (fig. 24); body length less than 6 mm, usually much less, subantennal distance often more than 1.0 MOD …………………3 2. F-I 3.0-3.5 times as long as broad, hindtarsal claw with three to five regularly spaced subsidiary teeth (fig. 27), S-III mostly or all dark brown to black, subantennal distance about 1.0 MOD ……………………………………………………………ventralis Say F-I 2.5-3.0, times as long as broad; hindtarsal claw with two, often irregularly spaced, subsidiary teeth; S-III in females and most males extensively green to blue; subantennal distance less than 1.0 MOD …………………………………………luzulina Dahlbom 3. RS stub not reaching as far as apex of stigma (fig. 23), medial vein obtusely arched, female hindtibia with large shallow depression on inner surface (fig. 30) ........................................................................................................... mimeca Kimsey RS stub reaching as far as or beyond apex of stigma; medial vein sharply arched, often almost forming a right angle; female hindtibia without a depression on inner surface ………………………………………………………………………………………… 4 4. T-III punctures irregular, deep (fig. 36), sharp edged and nearly contiguous, area before apical rim swollen………………………………………………… rudis Kimsey T-III punctures regular, usually not deep, with rounded edges and usually not contiguous, area before apical rim not swollen in females and only a little in males …………………………………………………………………………………………5 5. T-III apical rim medially distinctly emarginated and with translucent edge in females 1.0 MOD wide or wider, T-III punctures almost contiguous (fig. 28) ………………………………………………………………………….saphirina Buysson T-III apical margin slightly flattened medially or evenly rounded and rim usually less than 0.5 MOD wide, T-III punctation fine to rather coarse (fig. 29) …………………………………………………………………………………horus Aaron Supported by National Biological Information Infrastructure National Science Foundation Hosts · map Family Scientific name @ source (records) Fabaceae   Prosopis @ UCRC_ENT (3) Polygonaceae   Eriogonum fasciculatum @ UCRC_ENT (1) go to Discover Life's Facebook group Updated: 2024-04-25 01:03:05 gmt Discover Life | Top © Designed by The Polistes Corporation