Clothoda tocantinensis , Krolow, Tiago Kütter & Valadares, Ana Carolina B., 2016

Krolow, Tiago Kütter & Valadares, Ana Carolina B., 2016, First record of order Embioptera (Insecta) for the State of Tocantins, Brazil, with description of a new species of Clothoda Enderlein, Zootaxa 4193 (1), pp. 184-188: 185-186

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Clothoda tocantinensis

sp. nov.

Clothoda tocantinensis  sp. nov.

Fig. 1View FIGURE 1

Type locality. Palmas , Tocantins, Brazil. 

Diagnosis. Males of C. tocantinensis  sp. nov. can be readily distinguished from congeners by the following characters: head and body completely blackish brown except for the contrasting yellow prothorax; costal margin of wing cream-white, blackish-brown in C. amazonica  and C. longicauda  ; left and right paraprocts more pointed than in C. nobilis  ; first segment of cercus shorter than second, subequal in C. longicauda  .

Description. Alate male ( Figs. 1View FIGURE 1 A, B) (n = 3). Head width 2.3 (2.3‒2.4) mm X length 3.1 (2.9‒3.3) mm, body length 18.2 (17.8‒19.0) mm, forewing length 12.2 (11.9‒12.4) mm, hind wing length 11.2 (10.9‒11.4) mm.

Head capsule blackish brown, elongate-oval (longer than broad), sides convergent. Eyes small, subreniform and grayish. Small dark yellow cranial spot, subequal to the eyes size. Antennae blackish brown, when complete 4‒5 most apical flagellomeres white ( Figs. 1View FIGURE 1 A‒C); most antennae broken, two left antennae with 16 and 24 antennomeres (apical flagellomeres lost), one complete antenna with 26 antennomeres; three right antennae with 21, 25, 25 antennomeres, apical flagellomeres lost. All antennal segments with the distal portion (joint membranes) whitish. Clypeolabreal membrane pale, labrum blackish brown. Mandible slender, yellow, almost translucent, with black apex. Labial palpi and maxillary palpi with same color pattern of antenna, including the joint areas. Submentum trapezoidal with anterior margin slightly concave, mostly brown except light brown in the gular area. Gula with two groups of 5‒7 sparse setae ( Fig. 1View FIGURE 1 D). Thorax bicolored, prothorax distinctly yellowish, mesothorax and metathorax are light brown. All legs blackish brown except for yellowish junctions. Hind basitarsus with two protuberant papillae ( Fig. 1View FIGURE 1 F). Wings subequal ( Fig. 1View FIGURE 1 E), predominantly brownish, except veins A, R and Cu distinctly blackish brown; some cells fenestrated. Vein C conspicuously pale. Vein R appearing divided into a double line with a translucent area. Abdomen light brown, with tergites 1–7 paler on posterior margin of each segment, rest of tergites darker.

Terminalia  symmetrical (dorsal view, Fig. 1View FIGURE 1 G). Ninth tergum strongly excavated in mid-posterior area, occupied by strong projection of the medial sclerite of tergum 10. Medial flap upturned (elevated). Left cercusbasipodite and right cercus-basipodite similar, strongly sclerotized in dorsal view. Left and right paraprocts subequal, elongated with rounded tip and exceeding the ninth sternum. Left and right cercus subequal and symmetric, first segment shorter and stout, second segment more elongate and slender. Length of second segment about 1.5x that of first segment. In ventral view ( Fig. 1View FIGURE 1 H) ninth sternum sclerotized, medial process slightly asymmetrical, strongly cleft and covered with setae. Left and right paraprocts more sclerotized on anterior margins, sclerotization weaker at apex.

Female. unknown.

Distribution. Brazil (Tocantins).

Type-material. Holotype male, Brazil, Tocantins, Palmas, Distrito de Taquaruçu, Fazenda Encantada, 10 ° 15′02.3″ S, 0 48 ° 07′33.6″ W, 07‒14.XII.2012, Malaise trap, T.K. Krolow & H.I.L. Lima, coll., deposited in INPAAbout INPAGoogleMaps  ; two paratype males, same locality and collectors, 14‒21.XII.2012, deposited in CEUFT and INPAAbout INPAGoogleMaps  .

Etymology. The specific epithet refers to the State of Tocantins, where this species was collected.

Discussion. C. tocantinensis  sp. nov. is easily differentiated from all other species of Clothoda  by the distinct yellowish prothorax. This conspicuous character was used by Ross (1987: 17) to diagnosis the monotypic genus Cryptoclothoda  : uniformly blackish-brown except for contrasting golden prothorax. Despite this similarity in external appearance ( Ross, 1987), our species is readily differentiated of Cryptoclothoda  by the characters in Table 1.

It is important to note that with the description of C. tocantinensis  sp. nov. some generic limits proposed by Ross (1987), may need revision, since characters such as prothorax color and tufted gular area appear to vary among and within the described genera. Furthermore, color appears to be the most distinctive character available to separate species of Clothoda  ; separation on clear morphological grounds might be more desirable and could further validate separation of species based on color patterns. Future studies of phylogeny including all genera of Clothodidae  will be necessary to test monophyly of group and generic limits.

TABLE 1. List of distinctive characters between C. tocantinensis sp. nov. and Cryptoclothoda.

Characters C. tocantinensis  sp. nov. Cryptoclothoda 
Eyes small large, inflated
Gula bearing few setae without setae
Prothorax yellowish golden
Caudal apex of tenth tergum (MF) curled dorsally not curled dorsally
Tenth tergum (10) at most indistinctly cleft broadly cleft, forming two distinct caudal lobes
Epiproct (EP) small, inconspicuous large, conspicuous
Medial process of hypandrium (HP) slightly asymmetric, strongly cleft and covered by setae symmetric, short, with rounded apex

Instituto Nacional de Pesquisas da Amazonia