Parasthetops namibiensis, Perkins, 2008

Perkins, Philip D., 2008, Facial affect recognition in individuals at clinical high risk for psychosis, Zootaxa 1864, pp. 1-124 : 22-24

Parasthetops namibiensis new species

( Figs. 24 , 27 , 93 )

Type Material. Holotype (male): Namibia: Windhoek , Eros Mt., elev. 1600 m, 22° 34' S, 17° 6' E, 10 September 1974, Endrödy­Younga (#365). Deposited in the TMSA . Paratypes (22): Namibia: Damaraland , Okahandja, shore washing, 21° 59' S, 16° 52' E, 12 September 1974, Endrödy­Younga (#369) (1 TMSA) ; Khomashochl. , Farm Wissenfels, shore washing, 23° 20' S, 16° 25' E, 14 September 1974, Endrödy­Younga (#371) (3 TMSA) ; Naukluft , Naukluft Park, water coll., 24° 16' S, 16° 15' E, 26 October 1974, Endrödy­ Younga (#430) (2 TMSA) ; Nauwkluft , Nauwkluft Park, river stones, 24° 16' S, 16° 15' E, 23 August 1982, Endrödy­Younga (#1921) (1 TMSA) ; Windhoek , Eros Mt., shore washing, elev. 1600 m, 22° 34' S, 17° 6' E, 10 September 1974, Endrödy­Younga (#365) (6 TMSA) ; same locality, elev. 1600 m, 22° 34' S, 17° 6' E, 10 September 1974, Endrödy­Younga (#367) (8 TMSA) ; Windhoek , Eros Mt., sifting, elev. 1600 m, 22° 34' S, 17° 6' E, 10 September 1974, Endrödy­Younga (#366) (1 TMSA) .

Differential Diagnosis. Distinguished from other members of the rufulus group by the very smooth and shining pronotal reliefs, the elongate elytra, which are widest at the posterior 2/3, and the unilinear row of sparse but conspicuous setae on most elytral intervals. The size and body proportions are similar to those of P. striatus , but the elytral series are not deeply striate­impressed, and the dorsal sculpture is smoother, nonmicroreticulate ( Figs. 24 , 25 ). The aedeagus of P. namibiensis is similar in some respects to that of P. confluentus ( Figs. 26, 29 ), a smaller species with much less elongate and differently shaped elytra, and wider pronotal median sulcus ( Fig. 23 ).

Description. Size (length/width, mm) holotype: body (length to elytral apices) 1.93/0.77; head 0.31/ 0.45; pronotum 0.40/0.57; elytra 1.21 /0.77. Dorsum brown to dark brown, maxillary palpi testaceous except tips brown, legs light brown venter dark brown. Submentum and mentum microreticulate, sparsely punctulate.

Head with labrum finely, sparsely punctulate, shining. Clypeus and frons shining, not microreticulate, sparsely punctulate, punctures separated by about 2–6xpd, size of punctures about 1xef. Anteocellar sulci deep. Ocelli distinct.

Pronotum cordate, widest in front of middle; anterior angles obtuse, posterior rectangular; sides finely margined, crenulate; anterior margin shallowly arcuate over median 3/4, with narrow hyaline border; discal reliefs strongly shining, large anterior portion impunctate, otherwise very finely, very sparsely punctate, interstices ca. 3–8xpd; punctures slightly smaller than frons punctures; anteriorly and posteriorly punctures much larger, about 3xef; with foveae as follow: median anterior elongate and smaller posterior, deeply confluent forming median groove; a small anterior and larger, deeper oval posterior admedian; and a large anterior and small deep posterior adlateral on each side; discal foveae punctate, not microreticulate; punctures on discal reliefs each with very short, fine seta.

Elytra non­carinate, disc slightly depressed in front of midlength, sides weakly arcuate, widest at posterior 2/3, apices separately rounded; sutural apices rectangular; sides smooth, moderately explanate (but see female); posterior declivity gradual. Serial punctures moderately large and deep, on disc slightly larger than largest pronotal punctures, interstices about 1xpd; without granules. Series one striate­impressed, more strongly in posterior 1/2 than anterior 1/2. Series four and five weakly striate­impressed over anterior 1/2. Intervals weakly rounded, width on disc about 1–2xpd, most intervals with unilinear row of very sparse, conspicuous setae. Most discal punctures without discernable seta.

Metaventral disc rather flat, with midlongitudinal impression in basal 1/2. Thoracic ventrites and abdominal ventrites 1–5 clothed with dense setae except glabrous midlongitudinal prosternal ridge, glabrous dull mesoventral plaques and small glabrous strongly shining inverted V­shaped basomedian area on mesoventrite in front of intercoxal sternite. Ventrite 1 with weak sublateral and submedial basal carina on each side; ventrite 6 shining, with sparse setigerous punctures across distal 1/2.

Legs of male with very small pad of flattened (suction) setae on first two protarsomeres; 3 small setae on apical protarsomere. Femora and tibiae alutaceous.

Females with very wide explanate elytral margin, continuing to sharply rounded posterior angles, apices markedly truncate, conjointly forming line perpendicular to longitudinal axis of elytra.

Wings fully developed on holotype and all dissected males.

Aedeagus length ca. 0.45 mm, flagellum 0.11 mm; main­piece widened at midlength, right side arcuate in ventral view; flagellum sinuate; setae of main­piece rather long ( Fig. 27 ).

Etymology. Named in reference to the geographical distribution.

Distribution. Currently known from four localities in Namibia ( Fig. 93 ).

Figures

FIGURE 23. Parasthetops confluentus, dorsal and lateral habitus of holotype.

FIGURE 24. Parasthetops namibiensis, dorsal and lateral habitus of holotype.

FIGURE 25. Parasthetops striatus, dorsal and lateral habitus of holotype.

FIGURES 26–29. Parasthetops, aedeagi of holotypes. —26. P. confluentus. —27. P. namibiensis. —28. P. rufulus. —29. P. striatus.

FIGURES 93–94. Geographical distributions of Parasthetops species.