A Key to Species of the Genus Primeuchroeus and Descriptions of New Species (Hymenoptera: Chrysididae)
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University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Center for Systematic Entomology, Gainesville, Insecta Mundi Florida March 1988 A Key to Species of the Genus Primeuchroeus and Descriptions of New Species (Hymenoptera: Chrysididae) Richard M. Bohart University of California, Davis, CA Follow this and additional works at: https://digitalcommons.unl.edu/insectamundi Part of the Entomology Commons Bohart, Richard M., "A Key to Species of the Genus Primeuchroeus and Descriptions of New Species (Hymenoptera: Chrysididae)" (1988). Insecta Mundi. 481. https://digitalcommons.unl.edu/insectamundi/481 This Article is brought to you for free and open access by the Center for Systematic Entomology, Gainesville, Florida at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Insecta Mundi by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Vol. 2, no. 1, March 1988 INSECTA MUNDI 21 A Key to Species of the Genus Primeuchroeus and Descriptions of New Species (Hymenoptera: Chrysididae) Richard M. Bohart Department of Entomology University of California Davis, CA 95616 Abstract (BRISBANE), University of Sydney Macleay Museum (SYDNEY), U.S. National Museum (WASHINGTON). A key is given to 32 species of Prirneuchroeus from In the following key and descriptions abbrevia- the Australian, Oriental and Ethiopian Regions. New tions for structural features are: F-1-11 etc., flagellomeres species are indiaciis from India, and 6 species from (following pedicel); LID, least interocular distance; Australia. The latter are cardaleae, commoni, gressitti, MOD, median ocellus diameter; TFC, transverse frontal hornirlgi, thorpi, and uqua. carina; T-1-11 etc., terga; S- 1-11 etc., sterna. Introduction A total of 32 species of Primeuchroeus Linsenmaier Key to the Genus Primeuchroeus are now known worldwide. This includes 9 new species 1. Rs stub hardly more than half as long as stigma described herein. Distribution is confined to the Orien- and ending abruptly (fig. I), TFC present or ab- tal and Australian Regions except for the Ethiopian Re- sent (siamensis group) .................... .2 gion form, glzilianii Gribodo. Primeuchroeus can be 1'. Rs stub considerably more than half as long as separated from somewhat similar species in the genera stigma, TFC various and sometimes absent Trichrysis and Chrysidea by the mesopleuron, which is not ........................................ .9 traversed in the lower third or two-fifths by the scrobal sulcus. Also, Prirne~tchroertsis unique in having a long me- 2(1). Tibiae and tarsi mostly yellow (Indonesia, n. diobasal point of attachment on male sternum VIII. Borneo, Malaysia) ......................... ...................malayensis (Linsenmaier) Acknowledgments 2'. Tibiae, at least, dark ...................... .3 Thanks are due the curators of the museums listed 3(2'). T-I11 with 3 sharp distal teeth, TFC nearly below for lending material, including types. Dr. Lynn straight (Papua New Guinea) ............... Kimsey has made useful criticisms of the manuscript. ...................paradoxus (Linsenmaier) Museum designations are: American Entomologi- 3'. T-I11 without 3 distal teeth, TFC various ...... cal Institute (GAINESVILLE-AEI), Australian National ........................................ .4 Insect Collection (CANBERRA), Bernice P. Bishop Museum (HONOLULU), British Museum of Natural 4(3'). TFC weak or absent ...................... .5 History (LONDON), Hope Museum (OXFORD), South 4'. TFC well developed ..................... .7 Australian Museum (ADELAIDE), University of Califor- 5(4). Malar space about 2 MOD, head distinctly nia Bohart Museum (DAVIS), University of Queensland broader than long, TFC weak and slightly Richard M.Bohart: Primeuchroeus Pages 21-27 22 INSECTA MUNDI Vol. 2, no. 1, March 1988 Figures 1-8. 1-2) upper frons, stigmal area of wing, pedicel and F-I-III; 3-7) face, pedicel and F-I-III, forefemur; 8) T-III lateral, stigmal area of wing, pedicel and F-I-111, face. Drawings 1-2 based on females, 3-8 on male holotypes. Richard M. Bohart: Primeuchroeus Pages 21-27 Vol. 2, no. 1, March 1988 INSECTA MUNDI 23 angled up medially (Papua New Guinea) ..... sometimes obtusely angled, other characters ................ pauloradialis (Linsenmaier) various ................................ .13 Malar space about 1MOD, head nearly circular, 13(12). TFC absent, brow rounded, LID not greater TFC absent .6 ............................. than eye breadth, T-I11 nearly always with a Hindbasitarsus outwardly pale with a little minute denticle along lateral margin, T-I1 a little greenish reflection, pronotum weakly angled at lighter posteriorly but without a definite light broadest point, body length 3.5-4.5 mm. green band, very small species (3-4 mm. long) (Taiwan) ............... crassiceps (Tsuneki) with rather short Rs stub (Northern Territory to Hindbasitarsus outwardly all green, pronotum Victoria, Wessel Is.) ........................ obtusely but sharply angled at broadest point, ....................ambiguus (Linsenmaier) body length 5.5 mm. (India) ................ 13'. TFC present, or at least partial along sharp ........................... indiacus Bohart brow, 5 mm. or more long, T-I11 lateral denticle small but distinct, other characters various ... TFC sharp and strongly projecting, LID much .14 greater than eye breadth, malar space 2.5 MOD ....................................... (Papua New Guinea) .... .alces (Linsenmaier) 14(13'). Female: prepit bulge about 2x as long as postpit TFC not strongly projecting, LID about equal to area; malar space in both sexes generally less eye breadth, malar space about 1MOD ...... than 2 MOD (Australia including Tasmania) . ......................... reversus (F. Smith) 14'. Female: prepit bulge at least 3x as long as post- Pronotum with lateral margin in dorsal view pit area; malar space in both sexes usually about strongly incised medially (Papua New Guinea, 2 MOD .................................15 n. Queensland) .... incisicollis (Linsenmaier) Pronotum with lateral margin in dorsal view 15(14'). TFC absent, brow punctate, body deep purple hardly incised (Thailand, Viet Nam, Laos) .... (Tasmania, Victoria) .... .viridifrons (F. Smith) .......................siamensis (Bischoff) 15'. TFC present as a faint carina (seen from in front and below) with upper scapal basin somewhat T-I11 lateral margin with a subbasal tooth (ghil- polished, body usually green to blue (N. Teni- ianii group) .10 ............................ tory and Queensland to New S. Wales) T-111 lateral margin without a subbasal tooth ...... ..................... ellipticus (Linsenmaier) ....................................... .ll 16(111).Brow either with 2 transverse frontal carinae, or Tarsi straw colored, pronotum practically im- a single one with a transverse and shiny punc- punctate between and in front of anteromedial tate area below it; Rs rather evenly convex and (neck) pits, metanotum rounded (Malaysia, long, subgenal area present (biroi group) .17 Viet Nam, Taiwan) .. ........................ 16'. Brow without a TFC, with a simple one, or with .................... kansitakuanus (Tsuneki) a strong medial constriction in an area set off by Tarsi dark, pronotum with distinct punctures more than one carina, Rs sometimes a little bent between and in front of anteromedial (neck) back and/or weak beyond "bend", subgenal pits, metanotum pointed apicomedially area not outlined by carinae @ustus group) . (Ethiopian Region) ....... ghilianii (Gribodo) ....................................... .20 T-I11 with a tooth or minute denticle along 17(16). Brow with 2 transverse carinae of which lower lateral margin, or if not, very small species with is as strong or stronger than upper one ... 18 no TFC and LID not greater than eye breadth 17'. Brow with only one transverse carina (TFC) or (reversus group) .12 ........................ sometimes with a weak lower one also .... .19 T-I11 without a tooth or denticle along lateral margin, and TFC present, or LID greater than 18(17). Propodeal projection slightly convex posteri- eye breadth ............................ .16 orly (Papua New Guinea; Australia: N. Terri- tory, Queensland, New S. Wales; Fiji: Viti Levu) T-I11 with apicomedial denticle, subantennal ....................papuanius (Linsenmaier) space flattened and about 2 MOD, malar space 18'. Propodeal projection evenly concave posteri- longer than pedicel (Victoria) ............... orly (Papua New Guinea; Australia: Queens- truculentus (Buysson) ..................... land, New S. Wales ..........biroi (MocsAry) T-I11 without distinct apicomedial denticle but Richard M.Bohart: Primeuchroeus Pages 21-27 24 INSECTA MUNDI Vol. 2, no. 1, March 1988 (Linsenmaier) 19(17'). Transverse strip below TFC somewhat raised ....................longigenis (Queensland to Tasmania, Norfolk I. ) ....... 27(23'). TFC complete, shaped like a parenthesis, with ....................... .relegatus (Mocsbry) a short pair of posterior branches (fig. 4), length 19'. Transverse strip below TFC receding gradually 6-7 mm. (Queensland) ....... horningi Bohart into scapal basin (New Caledonia) ........... 27'. TFC, if complete, not shaped like a parenthesis, ......................caledonicus (Mocsary) length varying ..........................28 20(16'). T-I11 with an apicomedial denticle, subantennal 28(27'). TFC a little irregular but straight overall (fig. 7); space about 1.5 MOD, malar space shorter than scapal basin weakly concave; male F-I quite