Zorotypus komatsui Matsumura, Maruyama, Ntonifor & Beutel, 2023

Matsumura, Yoko, Maruyama, Munetoshi, Ntonifor, Nelson N. & Beutel, Rolf G., 2023, A new species of Zoraptera, Zorotypus komatsui sp. nov. from Cameroon and a redescription of Zorotypus vinsoni Paulian, 1951 (Polyneoptera, Zoraptera), ZooKeys 1178, pp. 39-59 : 39

publication ID	https://dx.doi.org/10.3897/zookeys.1178.108276
publication LSID	lsid:zoobank.org:pub:2F94A6DC-2CBC-4B76-BBD1-78FFB8909235
persistent identifier	https://treatment.plazi.org/id/1464A259-D721-43D8-920D-0237C612B20A
taxon LSID	lsid:zoobank.org:act:1464A259-D721-43D8-920D-0237C612B20A
treatment provided by	ZooKeys by Pensoft
scientific name	Zorotypus komatsui Matsumura, Maruyama, Ntonifor & Beutel
status	sp. nov.

Treatment

Zorotypus komatsui Matsumura, Maruyama, Ntonifor & Beutel sp. nov.

Figs 1 View Figure 1 , 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4

Zorotypus sp. 1 cameroon YK2: Matsumura et al. 2020: 352.

Type material.

Holotype. Cameroon: apterous male, South-west region, Nyasoso, Mt Kupe, 4°50'12.5"N, 9°41'21.7"E, 16.v.2015, coll. Takashi Komatsu (depository number/ SEHU48817-48818, parts of antennae mounted on another glass slide). The male was found under a rock which is unusual for Zoraptera (see Remarks for detail).

Diagnosis.

Males can be easily distinguished from those of other zorapteran species from Africa by the prominently developed projections on Tx and Txi and two pairs of sensilla basiconica on Tx. The following features should be added to the diagnosis: (1) eye spots absent in apterous males; (2) antennomere ii shorter than antennomere iii; (3) posterior metafemural surface covered with seven stout spiniform bristles, two of which are distantly located on middle region and longer, and the rest arranged evenly on the proximal portion; and (4) metatibia with three stout spiniform bristles, two of them inserted apically.

Description.

Apterous male.

Measurements. N = 1. Total body length: 2.42 mm, head width 0.50 mm, head length 0.47 mm, antennal length 1.26 mm, pronotal length 0.38 mm, metafemural length 0.68 mm, metatibial length 0.79 mm, abdominal maximum width 0.49 mm, length of cerci 0.11 mm.

Color. Coloration light brown except for membranous regions and less pigmented cerci, antennae, and legs (Fig. 1 View Figure 1 ). The holotype was processed with Proteinase K (Qiagen, Tokyo, Japan) and the body consequently less pigmented than in a natural condition.

Head (Figs 1 View Figure 1 , 2A View Figure 2 ). Head subtriangular, without black eye spots (Figs 1 View Figure 1 , 2A View Figure 2 ); ocelli absent; cephalic chaetotaxy as in Fig. 2A View Figure 2 ; relatively long sinuate setae densely arranged on vertex, referred to as fontanelle (e.g., Delamare-Deboutteville 1951; van Ryn-Tournel 1971) (Fig. 2A View Figure 2 ). Antennae 9-segmented; antennomere i slightly curved outward, longer than wide; antennomere ii short, about 1/3 as long as antennomere i, longer than antennomere iii (Fig. 1B View Figure 1 ); antennomeres iv-ix cylindrical and longer than wide, about 2.2 times as long as antennomere ii. Labial palps three-segmented.

Thorax (Figs 1 View Figure 1 , 2B View Figure 2 ). Pronotum trapezoid. Mesonotum trapezoid, as long as pronotum. Metanotum trapezoid, distinctly wider than long, shorter than mesonotum. Thoracic setation as in Fig. 2B View Figure 2 . Legs covered with short and moderately long setae; tarsi 2-segmented and covered with moderately long setae, with small unguitractor plate apically and pair of claws; posterior and ventral profemoral surfaces with moderately long setae; protibia with moderately long setae, and bristles arranged as comb on distal two-thirds along ventral surface; anterior and ventral mesofemural surfaces with moderately long setae; mesotibia with vestiture of moderately long setae and two apical spurs; metafemur broader than profemur, wider proximally than distally; ventral metafemural surface covered with moderately long setae; posterior surfaces with seven stout spiniform bristles, two on middle region, rest evenly distributed distally and longer than central ones (Fig. 1C View Figure 1 ); metatibia with moderately long setae and three stout spiniform bristles, two of them inserted apically (Fig. 1C View Figure 1 ).

Abdomen (Figs 1 View Figure 1 , 2C View Figure 2 , 3 View Figure 3 , 4 View Figure 4 ). Chaetotaxy of abdominal tergites and sternites as in Fig. 2C View Figure 2 . Abdominal tergum 1 (Ti) with single transverse row of short setae; Tii-vi with two transverse rows of short setae and additional setae of moderate length; Tvii with three transverse rows of moderately long setae; posterior two-thirds of Tviii covered with moderately long setae and several long setae along posterior edge; Tix trapezoidal, posteriorly narrow, with row of long setae along posterior edge; Tx with two pairs of sensilla basiconica (Fig. 2C View Figure 2 ), medially heavily sclerotized and continuing as bifurcated projection (Fig. 3 View Figure 3 ); Txi partially sclerotized but partially semimembranous, with sclerotized median projection originating from left side (Fig. 3D-E View Figure 3 '). Projections on Tx and Txi very large, superficially resembling asymmetric male genitalia; projection on Tx bifurcated, fork-like; projection on Txi triangular, with horn on dorsal side (Fig. 3E View Figure 3 asterisk). Cerci unsegmented, conical with numerous short setae and several long and fine setae. Si scarcely sclerotized; Sii laterally weakly sclerotized; Siii with transverse row of short setae along posterior margin; Siv with two transverse rows of short setae and additionally setae of moderate length; Sv-vii with three transverse rows of short setae and setae of moderate length; Sviii wider than long, with moderately long setae evenly distributed except for anterior and middle regions; posterior margin bifurcated, tips bent dorsad (Fig. 3C, C View Figure 3 '). Genitalia with six inconspicuous sclerites (Fig. 4 View Figure 4 , the largest sclerite with microstructures [Fig. 4 View Figure 4 , black arrowhead] and pointed protuberance [Fig. 4 View Figure 4 , white arrowheads]), one globular less sclerotized structure (Fig. 4 View Figure 4 , white arrows) and two membranous projections (Fig. 4 View Figure 4 , asterisks); highly reduced, almost vestigial (Fig. 4 View Figure 4 ).

Distribution.

Cameroon, South-west region, Nyasoso, Mt Kupe.

Remarks.

The habitat of the individual we obtained was unusual for a zorapteran species. The male was found under a rock ca 30 cm long and half embedded in soil. Furthermore, the rock was located in an open relatively dry area. The collector of the specimen T. Komatsu and one of the authors (MM) tried intensively to find zorapterans in rain forests nearby, but no additional individual was found.