Troctopsocoides gracilis, Mockford & García Aldrete, 2014

Mockford, Edward L. & García Aldrete, Alfonso N., 2014, A new genus and two new species, one extant and one fossil, in the family Troctopsocidae (Psocodea: ‘ Psocoptera’: Troctomorpha: Amphientometae: Electrentomoidea), Zootaxa 3869 (2), pp. 159-164 : 163

Troctopsocoides gracilis n.sp. (female)

Diagnosis. With the characters of the genus. Differing from T. erwini by slenderer wings, fewer and mostly larger spots in forewing, and longer Rs-M crossvein in forewing.

Color. Body in general gray. Compound eyes gray with slight reddish tinge. Antennae and legs brown. Forewings extensively marked with brown spots ( Fig. 11 ). Hindwings clear, unmarked ( Fig. 12 ). Wing veins dark brown. Subgenital plate ( Fig. 13 ) dark brown.

Structural characters. Habitus ( Fig. 10 ). Antennae about two-thirds length of body. Median ecdysial line of head distinct, extending to ocellar field. Surface of vertex granular. P2 apparently straight (not clearly visible in its entirety). P4 apparently same shape as in T. erwini ( Fig. 4 ). Pretarsal claws of a foot equal in shape and size, apparently of same structure as in T. erwini . Subgenital plate ( Fig. 13 ) bell-shaped, darkly pigmented, appearing very rigid.

Measurements (µm). BL: 1155, FW: 1427, HW: 1161, Antenna (approximate): 820, IO: 233, D: 119, IO/D: 1.96, d: 78, IO/d: 2.99.

Etymology. The specific name refers to the slender wings of this species.

Specimen studied. Holotype female. Dominican Republic. Samaná Province (northern mountains). Los Cacaos, amber inclusion, probably Miocene (see Grimaldi & Engel 2005). The type will be deposited in the Paleontology Collection of the Illinois Natural History Survey , Champaign , Illinois, USA.

Figures

FIGURES 9–13. Troctopsocoides spp. Structures. 9. T. erwini n. sp. Female, epiproct and right paraproct. Figs 10–13. T. gracilis n. sp. Female. 10. Habitus, dorsal view, legs not shown. 11. Forewing. 12. Hindwing. 13. Subgenital plate. Scales in mm.

FIGURES 1–8. Troctopsocoides erwini n. sp. Female. 1. Forewing. 2. Hindwing. 3. Lacinial tip. 4. P2-P4 of maxillary palpus. 5. Sculpture of vertex, parietal region. 6. Pretarsal claw. 7. Subgenital plate. 8. Ovipositor valvulae. Scales in mm.