Acanthetropis lamellatus Wasbauer, 1958

Kimsey, Lynn S. & Wasbauer, Marius S., 2015, Revision of the odd brachycistidine genus Acanthetropis Wasbauer, 1958 (Hymenoptera, Tiphiidae, Brachycistidinae), Journal of Hymenoptera Research 44, pp. 19-30 : 24-26

Acanthetropis lamellatus Wasbauer

Figs 1 , 6 , 13 , 17

Acanthetropis lamellatus Wasbauer 1958: 140. Holotype male; Mexico: Baja California Sur, La Paz (CAS).

Diagnosis.

The most distinctive feature of Acanthetropis lamellatus is the elevated transverse ledge on metasomal sternum II. Additional diagnostic features include the high sharp mesepisternal prominence and gular carina not elevated or dentate.

Male description.

Body length 11-14 mm. Head. Face shining with few scattered punctures, punctures stronger between lateral ocelli and on occiput; scape with few long, erect setae ventrally; flagellomere I L/W 2.5-3.1; lower rim of antennal socket not sharp or carinate below; basal half of clypeus shining, impunctate, apical half with several irregularly spaced, broad, shallow punctures and long apically directed setae; gular carina not abruptly raised anteriorly, not visible below mandibular condyle in full lateral view; mandibles with several long, stout amber-colored setae on outer surface. Mesosoma. Strongly punctured, sparsely clothed with medium to long erect or suberect setae; anterior face of pronotum shining medially, nearly impunctae, lateral surface strongly punctate; mesonotum with punctures smaller, more closely set anteriorly; mesepisternum with strongly raised, ridge-like elevation below anterodorsal protuberance; propodeum with dorsal sulcus strongly impressed, shining, raised area laterad of sulcus finely reticulate, impunctate except for small lateral area, posterior declivity sharp, carinate, sulcus between declivity and posterior transverse carina smooth, shining; posterior propodeal face separated from lateral face by lateral diagonal carina meeting posterior carina dorsally, obsolete before posterior rim. Metasoma. Segment I short, stout, L/W 1.7-2.3 in lateral view; sternum II with basal longitudinal fold, terminating at raised, transverse lamella (Fig. 6 ). Genital capsule (Fig. 13 ). Aedeagus widest near subapically, narrowed to bluntly pointed apex. Color. Uniform medium to chestnut brown, entire body shining, clothed with long golden setae; flagellum sparsely clothed with minute appressed whitish pubescence.

Distribution

(Fig. 17 ). Mexico: Baja California Sur: 23 mi s San Miguel de Commondu, El Pescadero (Playa Los Cerritos), San Ignacio (15, 20 mi s, 13 mi n, 13 mi e), Palmarito, La Paz, 13 mi w La Paz, Isla Espiritu Santo (Bahia San Gabriel), 26 mi s El Arco; USA: Arizona: Santa Cruz Co.: Madera Canyon; 22 specimens were examined including the holotype (BME, CAS, UCR).

Seasonal distribution.

This is a summer species, collected from June through September.

Figures

Figures 1 - 10. 1 - 2 Forewing and hindwing 3 Side view of head, antennae removed 4 Ventral view of head, mouthparts and mandibles removed 5 Oblique ventral view of metasomal sterna I and II 6 Ventral view of metasomal sternum II 7, 8 Antenna 9 Lateral view of metasomal segment I showing measurement points, H = height between points c and d, L = length, between points a and b 10 Lateral view of metasomal segments I and II.

Figures 11 - 14. Male genital capsule. 11, 12 lateral view (left), ventral view (right) 13, 14 Ventral view.

Figures 15 - 18. Distribution maps.