Trypoxylon anapaike Amarante, 1991

Amarante, Sérvio Túlio P., 2005, On The Systematics Of Trypoxylon scrobiferum Richards and T. anapaike Amarante With The Recognition Of A New Species Group In The Subgenus Trypoxylon (Hymenoptera: Crabronidae: Trypoxylini), Papéis Avulsos de Zoologia 45 (9), pp. 91-101: 92-93

publication ID 10.1590/S0031-10492005000900001

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Trypoxylon anapaike Amarante, 1991


Trypoxylon anapaike Amarante, 1991  

(Figs. 1-3, 7-8, 10-11)

Trypoxylon (Trypargilum) anapaike Amarante, 1991: 431   , Figs. 3-4. Female. Holotype: Female; SURINAME; Marowije, Anapaike (Lawa River) xi-1963; B. Malkin col. (MZSP); Amarante, 2002:49.

Description of male

Measurements. HW = 2.45-2.55 mm, FWL = 7.00 mm; Proportions: HW/HL = 1.14-1.16, HW/EV = 5.24-5.4, HW/EC = 6.24-6.47, EV/EC = 1.18-1.24, FS/EV = 0.71-0.75; Ratios: EL:EC:EV:EE = 1.05-1.09:0.21-0.23:0.26-0.27:1.00, OO:IO:HO = 0.06-0.13:0.49-0.51:1.00, AA:EA:AF = 0.24-0.26:0.25-0.38:1.00.

with moderately dense decumbent setae. Terga pubescent, I and II more sparsely so.

Head: Frons and eye emargination narrow, dull, colliculate, with moderately close to sparse, very shallow foveolae. Frontal carina on an elevated frontal prominence, posterior truncation equal to diameter of median ocellus, bifurcating arms horseshoe shaped, with length about 2x length of lower branch. Supraantennal carina absent, dorsal margin of antennal socket elevated, deflexed, partially covering condyle of scape. Clypeus weakly convex; clypeus free margin reflexed, thin; apical rim distinct, polished, slightly convex; apical margin weakly sinuate, with two very weak lobes defined by indistinct median emargination. Anterior ocellus in moderate depression. Vertex with small swelling behind each hindocellus. Flagellomere I 0.75x as long as II+III, 3x as long as wide, flagellomeres II and III 2x as long as wide, IV 1.33x, V 1.14x, VI-X 1x, flagellomere XI sub conical as long as X+IX. Occipital carina interrupted behind hypostomal carina; horizontal area behind hypostomal carina 2x as broad as fore basitarsus width.

Color: Body black. Orange yellow are: ventral of scape, apex of pedicel, mandibular base, fore and mid tibiae and tarsi, apex of fore and midfemora, base of hindtibia, basal 0.5 of hindbasitarsus, apex of hindtarsomeres I-III, hindtarsomere IV, tibial spurs, basal 0.66 of tergum II, apex of terga III and IV, sternum II. Medial portion of mandible red. Dark reddish brown are: apex of mandible, dorsum of scape, pedicel basally, flagellum, apical margin of clypeus, fore, mid and hind trochanters and femora, hind tibia and tarsus, terga I, III-VI, apical 1/3 of tergum II, sterna I, III-VI. Hind margin of pronotal collar whitish yellow.

Vestiture: Silver to pale gold, except for white to yellowish white on tibiae and tarsi. Clypeus and frons below dorsal margin of the eye emargination with dense vestiture. Clypeus with scattered, downwardly oriented, long pale yellow setae. Gena densely covered by decumbent setae. Thorax laterally and ventrally with moderately dense decumbent setae. Scutum, scutellum and propodeal dorsum with erect short setae. Posterior surface and posterolateral angles of propodeum

Plate 1: Figs. 1-3. Trypoxylon anapaike Amarante   , male: 1, sternum VIII, ventral view; 2 and 3, male genitalia; 2, left half, dorsal view, right half, ventral view; 3, lateral view.

Thorax: Dorsolateral angles of pronotal collar narrowly rounded, prominent. Pronotal collar with median dorsal prominence. Prosternal transverse carina sharp, reflexed and raised laterally, evanescent toward the middle. Scutum, scutellum and mesopleuron moderately shiny, finely and superficially reticulate, with moderately close to sparse, superficial and fine foveolae. Omaulal area smoothly angulate, omaulus very weakly indicated below pronotal lobes, short, running by 0.15-0.17x of distance to episternal sulcus, subomaulus well developed, ending at episternal sulcus. Length of precoxal carina 0.5x length of mesopleural suture. Mesopleural wing process bordered by simple ridge, a little widened at hind margin. Metapleural flange narrow. Intercoxal carina arcuate, ventrolateral intercoxal carina present. Dorsoposterior carina of hindtibiae straight, uniformly elevated, abruptly ending subapically, well apart from trochanter emargination. Hindtibial anterior surface flattened, forming an angle with dorsal surface. Forewing vein R1 not extending beyond apex of marginal cell; forewing veinlet 1r-m of submarginal cell forming approximately 90º with vein sector RS+M. Outer row of hamuli on hindwing 1.7x its length apart from inner row.

Propodeum (Fig. 10): Dorsal surface of propodeum with diagonal ridges that become transverse toward apex, dorsal enclosure slightly depressed. Posterior surface with moderately broad, deep longitudinal sulcus, ending at short transverse carina, separated by 0.75x its length from border of petiole socket; depression above petiole socket subrectangular, well-defined, enclosed by risen sharp carina. Lateral surface shiny, with sparse, superficial foveolae and with fine diagonal ridges, more distinct near posterolateral and dorsolateral angles. Propodeal side delimited dorsally by longitudinal carina that extends from spiracle to middle of posterolateral angle. Dorsal border of petiole socket flat except for deep concavity above orifice of apodeme (Fig. 11) Propodeal sternite absent.

Gaster: Tergum I-IV moderately convex. Tergum I with well defined, and II and III with ill-defined subapical constrictions. Tergum I 3x as long as apical width, 2.5x as long as II, with sides slightly diverging at basal third, more strongly so on median, and slightly again in apical third; sternum VIII (Fig. 1) densely setose at apical half, with apical half narrow and elongated, about three times broader at base than at apex, with a shallow subtrapezoidal apical emargination, defining two short latero-apical spine-like processes; gonostyle of genitalia (Fig. 2-3) apically uniramous, with mesal inner projection; volsellar lobes touching each other.

Notes on females

Since I described this species I have seen more specimens. I include here characters that I did not mention in the original description. The hindcoxa venter has a small subapical tuft of setae, hardly discernible under a light stereoscope. When viewed under a SEM, this structure is seen to be a depression with groups of minute pores interspaced by setae (Figs. 7 and 8).

The species is now known to occur southwest from Surinam to Acre, Brazil, and southeast to Espírito Santo, Brazil. Material examined: SURINAM   : Marowijne: Anapaike ( Rio Lawa ), xi.1963 (B. Malkin) female (Holotype, MZSP)   . BRAZIL: Amazonas: Rio Tarumã-mirim (3°2’S, 60°17’W), various dates (M. V. B. Garcia col.) GoogleMaps   3 females, 4 males ( MZSP, INPA, UFVB); BR 174 ZF 3 km 23, 2°26’S, 59°51’W, 20.x.1986 (M. V. B. Garcia col.) GoogleMaps   1 female ( MZSP); BR 174 km 70, 2°23’S, 59°56’W, 4.ix.1987 (M. V. B. Garcia col.) GoogleMaps   1 female ( MZSP)   . Acre: Rio Branco , 24.iv.1997   , 1 female, 27.iv.1997, 1 female, 1 male, 10.v.1997, 1 female (S.F. Silva leg.) ( MZSP)   . Sergipe: Santa Luzia do Itanhy, Crastro , 11°22’36,7”S, 37°24’58,2”W, Armadilha [trap] Malaise, trilha [trail], pto. 3 [point], 1-4.viii.2001 (M. T. Tavares & equipe col.) GoogleMaps   . Bahia: Mata de São João, Reserva de Sapiranga , 12°33’37,2”S, 38°02’55,3”W, Armadilha [trap] Malaise, trilha [trail], pto. 4 [point], 22-26.vii.2001 (M. T. Tavares & equipe col.) GoogleMaps   . Espírito Santo: Linhares, Res. [Reserva] Biol. [Biológica] Sooretama , 18°58’02,8”S, 40°07’53,6”W, Armadilha [trap] de Malaise, trilha [trail], pto. 1 [point], 24-27.ii.2002 (C.O. Azevedo & equipe col.) GoogleMaps   .


Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo


Royal British Columbia Museum - Herbarium


Instituto Nacional de Pesquisas da Amazonia


Vicosa, Universidade Federal de Vicosa, Museum of Entomology


Embrapa Agrobiology Diazothrophic Microbial Culture Collection


Tavera, Department of Geology and Geophysics














Trypoxylon anapaike Amarante, 1991

Amarante, Sérvio Túlio P. 2005

Trypoxylon (Trypargilum) anapaike

Amarante 2002: 49
Amarante 1991: 431