Lynn Siri Kimsey.
Loboscelidiinae, new species and a new genus from Malaysia (Chrysididae, Hymenoptera).
Psyche 95:67-80, 1988.

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LOBOSCELIDIINAE, NEW SPECIES AND A NEW
GENUS FROM MALAYSIA
(CHRYSIDIDAE, HYMENOPTERA)
Museum of Comparative Zoology
Harvard University, Cambridge, MA 02138, USA Loboscelidiinae is one of the most aberrant and poorly under- stood groups of Chrysididae. Even the family placement of Loboscelidia Westwood has varied considerably over the years. Throughout this entire period, as recounted by Day (1978), none of the authors involved recognized the difference between the sexes. Maa and Yoshimoto (1961) treated them as separate genera, Lobo- scelidia (males) and Scelidoloba Maa and Yoshimoto (females). These wasps are strongly sexually dimorphic, making association of the sexes difficult. Males have a long slender flagellum and tend to be less robust looking than females. The female flagellum is short, flattened and broad. In addition, the sexes do not appear to share the same modifications of the face, mesopleuron, legs and scutellum within a species. However, the wing venation and development of the notauli is apparently the same in conspecific males and females. To further complicate matters fewer than 10% of the specimens in collections are female.
Loboscelidia is characterized by having the antennae insert mid face; head prolonged posteriorly into a necklike projection; prono- turn not freely hinged to scutum; tegulae very large, covering both wing bases and held in place by a ridge on the mesopleuron; meso- pleuron smooth without sculpturing; propodeum without horizon- tal dorsal surface and with shelflike lateral projections; forewing lacking a stigma and costal vein, and the abdomen with 4 (females) or 5 (males) external gastral segments.
A complete revision of this group would be premature at this point. However, there are a large number of new taxa in this sub- family, which need to be published in anticipation of a monograph on the family being prepared by myself and R. M. Bohart. Specimens were borrowed from the following institutions and individuals, type repositories are indicated by capital letters: Academia Sinica, Institute of Zoology Insect Collection, Beijing,



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68 Psyche [VOI. 95
China (BEIJING) American Entomological Institute, Gainesville, Florida, U.S.A. (GAINESVILLE, H. Townes), Australian National Insect Collection, C.S.I.R.O., Canberra City, Australia (CANBERRA, J. C. Cardale), Bernice P. Bishop Museum, Honolulu, Hawaii, U.S. A. (HONOLULU, G. Nishida), British Museum (Natural His- tory), London (LONDON, M. C. Day), Canadian National Collec- tion, Ottawa, Ontario (OTTAWA, L. Masner), Department of Primary Industries Insect Collection, Indooroopily, Queensland, Australia (INDOOROOPILY, K. J. Houston), and Bohart Museum of Entomology, University of California, Davis, USA (DAVIS, R. 0. Schuster).
Loboscelidia asiana Kimsey, new species
(Figs. 3, 9)
Holotype male. Body length 3 mm. Frontal projection triangular in front view, appearing truncate in profile (fig. 3); frons smooth with sharp fold extending from frontal projection along ocular mar- gins to vertex; cervical projection slightly convex in profile; scape with narrow transparent flange extending two-thirds scapal length; F-I length 2.4X breadth; F-I1 shorter than I, length 2.2X breadth; pronotum longer than broad along transverse and longitudinal mid- lines; scutum with complete notauli; propodeal projections angular, less than 1 MOD tall; forewing with faint maculation, Rl 0.6X, cu-a 0.3X and Rs 1.4X as long as stigmal vein; femora and tibiae with numerous ventral macrochaetae; mid and hindlegs (fig. 9); midfem- oral flange extending less than one half as long as femur; midtibial flange narrow, two-thirds tibia1 length; hindfemoral flange slender, as long as femur; hindtibial posterior margin bicarinate, flange 0.75X as long as tibia. Body reddish brown, wings maculate. Female unknown.
Holotype male.-VIET NAM: Dalat, 1500 m, 29 April-4 May 1960, L. W. Quate (HONOLULU).
Discussion. This species is closest structurally to defecta Kieffer, and less so to atra Krombein, based on the V-shaped frontal projec- tion below the antenna1 sockets, Rs less than half as long as stigmal vein, Rl and cu-a present and distinct, and F-I1 more than twice as long as broad. It can be distinguished from these species by the lengths of cu-a and Rl and shape of the frons.



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19881 Kimsey- Loboscelidiinae from Malaysia 69 Loboscelidia australis Kimsey, new species (Fig. 1)
Holotype male. Body length 2.5 mm. Frontal projection narrow, elongate and apically truncate in front view, forming an acute tooth in profile (fig. l), and with smaller projection beneath antennal socket; frons smooth, with obtuse fold extending along ocular mar- gin from antennal socket; cervical projection strongly convex in profile; scape with small, short, transparent edge near base; F-I length 1.6X breadth; F-I1 length 1.3X breadth; pronotum as long as broad along transverse and longitudinal midlines; scutum without notauli, parapsides indicated by shallow lines; propodeal projec- tions angular, less than 1 MOD tall; femora and tibiae with few, fine macrochaetae; midtibial flange very narrow extending less than half tibial length; hindfemoral flange large, two-t hirds femoral length; hindtibial posterior margin with 1 carina, flange two thirds tibial length; forewing Rl 0.5X, cu-a 0.6X and Rs 1.3X as long as stigmal vein. Body reddish brown, somewhat darker on mesopleuron, meta- thorax and propodeum; wings maculate.
Female unknown.
Holotype male.-AUSTRALIA: N.S.W., Spencer, 1 1-14 January (GAINESVILLE).
Discussion. The majority of Australian Loboscelidia, including australis, lack notauli on the scutum. The elongate and noselike subantennal projection of australis will immediately distinguish it from these. Additional diagnostic features include: cu-a slightly more than half as long and Rl half as long as stigmal vein, and hindtibial flange only extending about two-thirds of tibial length. Loboscelidia indica Kimsey, new species
(Figs. 2, 6)
Holotype male.
Body length 4 mm. Frontal projection broadly bilobate, lower carina forming a narrow rectangle, broadly truncate in profile (fig. 2); frons smooth with sharp fold extending from frontal projection, along ocular margin to hindocellus; cervical pro- jection strongly convex in profile; scape with transparent flange along entire length; F-I and I1 length 2.2X breadth; pronotum as long as broad along transverse and longitudinal midlines; scutum



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70 Psyche [vo~. 95
1. australis
9. asiana
'.--/-' 5. maculata
Figs. 1-1 1.
Loboscelidia species. Figs. 1-4. Lateral view of head. Fig. 5. Fore- wing. Figs. 6-8. Forewing venation. Figs. 9-1 1. Lateral view of hindleg (above) and midleg (below).
with parapsides and notauli nearly complete; propodeal angles broadly rounded, about 1.5 MOD tall; femora and tibiae with numerous macrochaetae; miditibial flange large, extending over two-thirds of tibia; hindfemoral flange large, extending along two- thirds of femur; hindtibial posterior margin bicarinate, flange extending for entire tibia1 length; forewing (fig. 6), Rl 0.6X, cu-a



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19881 Kimsey- Lo boscelidiinae from Malaysia 71 0.8X and Rs 2.3X as long as stigmal vein. Body dark reddish brown, forewing maculate.
Female unknown.
Holotype male.-INDIA: Nilgiri Hills, May 1961, P. S. Nathan (OTTAWA).
Discussion. Closely related to both sarawakensis and philippi- nensis Fouts, because of the similar wing venation and leg flanges, indica can be distinguished from these species by Rs more than twice as long as the stigmal vein, hindtibial flange extending the entire tibial length, and the subantennal projection broadly truncate and smooth below, without carinae or rugae. Loboscelidia loatiana Kimsey, new species (Fig. 8).
Holotype male. Body length 2.0 mm. Frontal projection broadly triangular in front view, broadly truncate in profile; frons smooth with broadly obtuse fold extending from frontal projection along ocular margin dorsally; scape with narrow flange extending entire length; F-I and I1 lengths 1.8X breadths; pronotum broader than long along transverse and longitudinal midlines; scutum with para- psides and complete notauli; propodeal projection angular, more than 1 MOD high; femora and tibiae with sparse macrochaetae; midtibial flange extending two-thirds of tibial length; hindfemoral flange as wide as femur and extending entire length; hindtibial pos- terior margin bicarinate, flange extending entire length; forewing (fig. 9), Rl 0.6X, cu-a 0.4X and Rs 3X as long as stigmal vein. Body reddish brown, forewing faintly maculate. Female unknown.
Holotype male.-LAOS: Vientiane Prov., Ban Van Eue, 15 May 1967, native collector (HONOLULU). Paratypes: 9 males, same data as type, except dates September 1965 to September 1967 (HONO- LULU, DAVIS); 2 males: VIET NAM: Fyan, 1 1 July-9 August 1961, N. R. Spencer (HONOLULU, DAVIS).
Discussion. The frontal projection and general wing venation of laotiana are closest to that of pasohana. However, laotiana can be distinguished frompasohana by the shorter Rs vein, smaller average body size (2 mm as opposed to 3 mm inpasohana), and paler brown color.




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Psyche
[Vol. 95
Loboscelidia maculata Kimsey, new species (Fig. 5)
Holotype male. Body length 3.5 mm. Frontal projection trilo- bate in front view with medial lobe elongate and apically truncate, sharply truncate in profile; frons smooth; vertex with short elevated welt on outer side of hindocellus; gena angular behind eye; cervical projection broadly convex in profile; scape with flange extending entire length; F-1-11 lengths 1.8X breadths; pronotum broader than long along transverse and longitudinal midlines; scutum without notauli, parapsides indicated by broad grooves; propodeal projec- tion angulate, less than 1 MOD tall; femora with few macrochaetae; tibiae with numerous ones; midtibial flange extending two-thirds of length; hindfemoral flange extending most of femoral length; hind- tibial posterior margin bicarinate, flange extending two-thirds of tibial length; forewing (fig. 5), Rl 0.6X, cu-a and Rs 2.2X as long as stigma1 vein. Body dark brown, forewing with dark brown maculae. Female unknown.
Holotype male.-AUSTRALIA: Qld., Mulgrave R. Rd., 7 km sw Bellenden Ker, 2 April 1984, A. Calder and T. Weir (CANBERRA). Paratypes: 2 males, Mossman Gorge, 17-23 February 1984, L. Masner (OTTAWA); 1 male, Kuranda, 17-24 February 1984, L. Masner (OTTAWA); 1 male, Shiptons Flat, 16-18 May 1981, A. Calder and J. Feehan (CANBERRA).
Discussion.
The absence of notauli and wing venation indicate a close relationship with ora, and less so australis. L. maculata can be further distinguished from these species by the subantennal projec- tion acutely V-shaped, appearing blunt and truncate in profile, the vertex with a welt or fold on the outer side of the hindocellus, and the wings darkly maculate.
Loboscelidia nigricephala Kimsey, new species Holotype male.
Body length 3 mm. Frontal projection broadly V-shaped in front view, truncate in profile; frons with fine dense scratches or rugae, with short, obtuse lateral fold extending dorsad from frontal projection; cervical projection broadly curved in pro- file; scape with flange dark, forming large basal lobe; gena broad- ened behind eye; F-I and I1 lengths 1.8X breadths; pronotum broader than long along transverse and longitudinal midlines; scu- turn with parapsides and incomplete notauli; propodeal angles large and evenly rounded, about 1.8 MOD high; femora and tibiae with



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19881 Kimsey- Lo boscelidiinae from Malaysia 7 3 sparse macrochaetae; midtibial flange extending along two-thirds of tibia; hindfemoral flange large, extending along entire femoral length; hindtibial posterior margin weakly bicarinate, one faint, the other expanded and flangelike, ventral flange large, extending entire length; forewing Rl 0.3X, cu-a as long as and Rs 2X as long as stigmal length. Body reddish brown, except flagellum, head, leg joints, tarsi and abdomen dark brown, head blackish dorsally; fore- wing maculate.
Female unknown.
Holotype male.-AUSTRALIA: Qld., Hugh Nelson Ranch, 21 km s Atherton, 9 January-10 February 1984, Storey and Brown (INDOO- ROOPILY). Paratypes: 6 males, same data as type (INDOOROOPILY, DAVIS).
Discussion. This is the only Australian species described which has notauli. Other characteristics, particularly the large hindleg flanges, short Rs and long cu-a veins, show a distinct similarity to ora. However, the presence of notauli and contrastingly dark head will distinguish nigricephala. In addition, nigricephala has a pro- nounced medial carina below the frontal projection. Loboscelidia ora Kimsey, new species
(Figs. 4, 10)
Holotype male. Body length 2.5 mm. Frontal projection form- ing an extremely flattened triangle in front view, narrowly truncate in profile (fig. 4); frons smooth with faint fold extending dorsad from frontal projection along ocular margin; cervical projection broadly curved in profile; scape without clear flange, with brown carina; F-I and I1 lengths 1.8X breadths; pronotum as long as broad along transverse and longitudinal midlines; scutum with parapsides indicated by a crease, without notauli; propodeal projection angu- late, 1.5 MOD tall; femora and tibiae with sparse macrochaetae; mid and hindlegs (fig. 10); mid and hindtibial and hindfemoral flanges extending almost entire length of respective tibia or femur; hindtibial posterior margin bicarinate, inner carina expanded and transparent, flangelike; forewing Rl 0.3X, cu-a as long as and Rs 2X as long as stigmal vein. Body reddish brown, forewing maculate. Female unknown.
Holotype male.-AUSTRALIA: Qld., Bingil Bay, Cedar Creek, 14 May 1980,I. D. Naumann, J. C. Cardale (CANBERRA). Paratypes: 2 males, same data as type; 1 male, Mission Beach, Laceys Creek,



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74 Psyche [vo~. 95
17.54s 146.06E, 13-14 May 1980, same collectors (CANBERRA, DAVIS); 1 male, Petford, 29 April 1976, R. I. Storey (CANBERRA). Non-type material: 9 females were seen from Bribie Is., Millstream Falls National Park, Slacks Creek, Toowomba and Shiptons Flat. These are not designated as paratypes due to the uncertainty in associating the sexes.
Discussion.
Diagnostic features of ora include: the absence of notauli, face smooth below frontal projection, frontal projection broadly V-shaped and nearly linear in front view, and head and thorax concolorous. The wing venation most closely resembles that of maculata and nigracephala.
This is one of the few species with associated females. In this particular instance the females have the same wing venation, scutal sculpturing, hindleg flanges, and frontal projection as the males. Loboscelidia novoguineana Kimsey, new species Holotype male. Body length 2.5 mm. Frontal projection nearly linear in front view, triangular in profile; frons with fine dense rugae medially; cervical projection broadly curved in profile; scape with flange indicated as small, subbasal, dark lobe; gena not broaded behind eye; F-I and I1 lengths 2.3X breadths; pronoturn broader than long along transverse and longitudinal midlines; scutum with parapsides and incomplete notauli; propodeal projection large and evenly rounded, about 1.4 MOD high; femora and tibiae with sparse macrochaetae; midtibial flange narrow, extending about 0.5 tibial length; hindfemoral flange extending along half femoral length; hindtibia weakly bicarinate along posterior margin, flange 0.75X tibial length; forewing Rs 2X, Rl0.5X and cu-a subequal to stigma1 vein length. Body dark brown, forewing weakly maculate, with dark band across Rs and R 1.
Female unknown.
Holotype male.-NE NEW GUINEA: East Highlands, Aiyura, 1800-1900 m, 6 January 1965, J. and M. Sedlacek (HONOLULU). Paratypes: 2 males (HONOLULU); Karimui, 1080 m, 9 July 1963, M. Sedlacek, NEW BRITAIN: Gazelle Pen., Mt. Sinewit, 900 m, 5-10 November 1962, Sedlacek (HONOLULU).
Discussion. This species most closely resembles nigricephala in wing venation, and the incomplete notauli. The slender hindleg flanges, concolorous head and thorax, and linear frontal projection,



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19881 Kimsey- Loboscelidiinae from Malaysia 7 5 which lacks carinae or rugae below the antennal sockets, distinguish novoguineana from nigricephala and other species. Loboscelidia pasohana Kimsey, new species (Figs. 7, 11)
Holotype male.
Body length 3 mm, Frontal projection with elongate rectangular medial lobe and smaller lateral lobe beneath each antennal socket in frontal view, bilobate in profile; frons smooth, with lateral fold along ocular margin; cervical projection strongly convex; scape with transparent flange along entire length; F-I length 1.6X breadth; F-I1 length 1.7X breadth; gena widened behind eye; pronotum as broad as long along transverse and longi- tudinal midlines; scutum with parapsides and complete notauli; scu- tellum with dense striae and ridges laterally; propodeal projection broadly rounded, about 1 MOD high; femora with sparse macro- chaetae; mid and hindlegs (fig. 11); midtibial flange extending about two-thirds tibia1 length; hindfemoral flange extending almost entire length of femur; hindtibial posterior margin bicarinate, flange extending entire length; forewing (fig. 7), Rl 0.7X, cu-a 0.5X and Rs 4.5X as long as stigmal vein. Body dark brown, forewing lightly maculate.
Female unknown.
Holotype male.-MALAYSIA: Pasoh Forest Reserve, Negri Sembi- lan, 17 April 1980, P. Becker and M. Wong ("E. and M. Becker") (GAINESVILLE). Paratypes: 9 males, same data as type, except dates between April 1978 and April 1980.
Discussion.
This species most closely resembles laotiana, from which it can be distinguished by the longer Rs vein (3.5-4.0X as long as stigmal vein), larger body size, and darker color. Additional diagnostic features include the presence of a troughlike sulcus below the tegular clip on the mesoplewon, strongly projecting and sub- truncate frontal projection, and short F-I. Loboscelidia sarawakensis Kimsey, new species Holotype male.
Body length 2.5 mm. Frontal projection acutely V-shaped, truncate in profile; frons smooth, with faint fold extending dorsad from frontal projection along ocular margin; cervical projec- tion curved in profile; scape with clear flange extending along entire length; F-1-11 lengths 2X breadths; pronotum slightly broader than



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76 Psyche [vo~. 95
long along transverse and longitudinal midlines; scutum with com- plete notauli, without parapsides; propodeal projection angulate, 1.3 MOD tall; femora and tibiae with sparse macrochaetae; mid and hindtibial and hindfemoral flanges large and extending almost entire length of respective tibia or femur; hindtibal posterior margin weakly bicarinate; forewing Rl 0,8X, cu-a 0.4X and Rs 2.5X stigmal vein length. Body dark reddish brown, forewing maculate. Female unknown.
Holotype rnale.-S~RAwA~: 4th div., Gn. Mulu, 17 September to 23 October 1977, D. Hollis (LONDON). Paratypes (LONDON, DAVIS): 18 males, same data as type; 2 males, same data as type except 1978 and no collector; 1 male, G. Mulu Pk., Long Pala, 1-6 July 1978, V. F. Eastop; G. Mulu, Mellinau Gorge, Keranges Forest, July 1978, M. Vallack; 10 males, BRUNEI: Labi, mixed dipterocarp forest, 200 m, August-September 1979, I. Gauld; 1 male, Bikit Sulang nr. Lamunin, N. E. Stork; 3 males, N. BORNEO: Mt. Kirabalu, 1 April 1964, S. Kueh. In addition, 1 male was seen from Indonesia: Sulawesi, Ulara, Dumoga-Bone.
Discussion.
Most closely resembling indica in wing venation, sarawakensis can be distinguished from that species by the larger hindfemoral flange and face with a triangular subantennal projec- tion. Additional diagnostic features are the longitudinally scratched scutellum, face below the frontal projection smooth and ecarinate, and R 1 and cu-a subequal in length.
Loboscelidia sinensis Kimsey, new species Holotype male.
Body length 3 mm. Frontal projection acutely truncate, appearing truncate in profile; frons finely and densely rugose medially, with sharp fold extending from frontal projection along ocular margin; cervical margin broadly rounded; scape with- out flange; F-1-11 lengths 1.8X breadth; pronotum broader than long along transverse and longitudinal midlines, sharp edged laterally; scutum with complete notauli and parapsides; scutellum coarsely scratched and punctate; propodeal projection subtri- angular, about 1.6 MOD tall; femora and tibiae with sparse macrochaetae; midtibial flange narrow, about 0.5X tibial length; hindfemoral and tibial flanges about 0.7X as long as respective femur or tibia; hindtibia weakly bicarinate posteriorly; forewing Rl 0.3X, cu-a 0.4X and Rs 1.8X stigmal vein length. Body dark reddish brown, wings maculate.
Female unknown.




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19881 Kimsey- Loboscelidiinae from Malaysia Figs. 12- 13. Rhadinoscehdia malaysiae. Fig. 12. Lateral view of body. Fig. 13. Front view of face.
Holotype nude.--CHINA: Hainan Is., Tien Fong Mts., 21 May 1983, Z. Bouqek (BEIJING). Paratypes: 3 males, same data as type (LONDON, DAVIS).
Discussion.
L. sinensis has the very short Rl and cu-a veins characteristic of bakeri Fouts, asiana and defecta. However, the coarsely sculptured scutellum, broad and sharp edged pronotum, and acute V-shaped frontal projection separate sinensis from these species.
Rhadinoscelidia Kimsey, new genus
Diagnosis. Vertex strongly elevated above cervical extension of head; cervical extension constricted behind ocelli and eyes, and pos- teriorly expanded and shieldlike dorsally, with narrow ovoid row of ribbonlike setae along anterolateral edge of shield; head with narrow postocular row of ribbonlike setae; scape long, flattened and slender, as long as pedicel 4- F-I-IV; pronotum slender, narrower than head, laterally rounded and somewhat constricted medially, with anterolateral lobe subtended by small tuft of ribbonlike setae; scutum with notauli and posterolaterally lobate; propodeurn strongly indented above petiolar insertion, with apical skirt-like rim;



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78 Psyche [vo~. 95
coxae slender and elongate; tibiae slender and slightly curved, with- out transparent flanges; forewing venation highly reduced, re- stricted to basal I/ 13th of wing, consisting of Rs, Rl, Sc+R, M and M+Cu, and a stained line and fold indicating 1 A; tarsal claws with small medial tooth; body integument smooth and impunctate. Female unknown.
Etymology: Rhadino-slender, scelidia-legged, f., Gr. Type: Rhadinoscelidia malaysiae Kimsey, new species. Discussion. These are small slender wasps, closely related to Loboscelidia. They are characterized by having many reduced char- acteristics, including the slender cervical projection, narrow wings with reduced venation, small combs of ribbon-like setae on the head and pronotum, and small flanges on the legs. In addition, the bonnet-shaped cervical projection and angulate vertex distinguish this genus from Loboscelidia.
Rhadinoscelidia malaysiae Kimsey, new species (Figs. 12, 13)
Holotype male. Body length 2 mm. Frontal projection with truncate medial and lateral lobes in front view (fig. 13), bilobate in profile (fig. 12); frons with dense fine scratches radiating from midocellus; vertex with transverse carina extending from hindocel- lus to, and part way down ocular margin; scape 1.2X head length, without transparent flange; F-I 1.6X as long as broad; F-11 length 1.5X breadth; pronotum longer than broad along transverse and longitudinal midlines, broadly rounded laterally; scutum with par- apsides and notauli; propodeal projections angulate and 1 MOD high; femora with small apical flange; tibiae without flanges; hind- tibia1 posterior margin without distinct carinae; forewing Rl 2X and Rs 3X as long as stigma1 vein (fig. 12). Body reddish brown, with scattered long erect pale setae, forewing with apical third brown-