Panesthia

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Taxonavigation

Ordo: Blattodea
Familia: Blaberidae

Name

Panesthia Serville, 1831 – Wikispecies link – Pensoft Profile

• Panesthia Serville, 1831: 38; Princis 1965: 309; Roth 1977: 12, 1979: 3. Type species: Panesthia angustipennis (Illiger, 1801).
• Proterodia Costa, 1866: 5. Type species: Proterodia punctatissima Costa, 1866. Synonymized by Princis 1965: 309.
• Dicellonotus Butler, 1882: 387. Type species: Dicellonotus lucanoides Butler, 1882. Synonymized by Roth 1977: 12.

Diagnosis

(mainly following Roth 1977, 1979). Coloration dark reddish brown or black. Size ranging from 15 mm to over 50 mm. Body strongly sclerotized with a coarse surface, densely covered with punctations. Vertex foveolar or not, slightly exposed. Pronotum transversal ovate, anterior margin slightly convex, with a variable excision in the midline, or entire. If excised, the corners of the concavity protruding or not. Lateral margins of pronotum arched and the hind margin almost straight or slightly concave. The surface of the pronotum granular on variably depressed anterior half with a pair of oblique grooves and often with two disc tubercles on the posteriorly punctate half. Tegmina and wings unicoloured or not, fully developed (sometimes mutilated terminally or only leaving the basal portion of the tegmina and wings), or reduced, or tegmina reduced but wings absent, or both tegmina and wings absent. The tarsi of legs with five segments, pulvilli are present on segments 1–4. The hind metatarsus is shorter than the remaining segments combined. Claws symmetrical, without arolia. Abdominal terga with punctate surface, and the hind margins without spines, tubercles or teeth.
Anterolateral corners of terga rarely with holes and without setae, or just tergum six (T6) and tergum seven (T7) with holes. Lateral margins of T6 smooth, and laterocaudal angles not produced, or with a spine and directed caudally. Lateral margins of T7 straight and not crenulate, laterocaudal angles sometimes produced and usually directed caudally. Lateral margins of sternite seven (S7) with a feeble and short ridge or without ridge. In the male, the hind margin of the last sternite is truncate or concave, and the subgenital fig is slightly exposed. In the female, the hind margin of the last sternite is convex and rounded. Both sexes are without styli. Supra-anal fig punctate, with uneven or rounded hind margin, and cerci are short and broad basally. Paraprocts are asymmetrical, the left one in ventral view with a finger-like projection lacking in the right one. Anterior margin and lateral margins of subgenital fig concave and the hind margin is rounded. Four genital phallomeres as follow: first sclerite of the left phallomere (L1) figd; second ventromedial sclerite of left phallomere (L2vm) rod-like; second dorsal sclerite of the left phallomere (L2d) variable; second sclerite of the right phallomere (R2) well developed or reduced, if developed, it is often hook-like and curved to right side in dorsal view.

Remarks

The genus Panesthia is recognized by both T6 and T7 having smooth lateral margins, their hind margins without tubercles; the hind angles of T7 spine-like, but T6 not. Some species in this genus may have individuals with mixed characters resembling the genus Salganea Stål, 1877, Ancaudellia Shaw, 1925 or Miopanesthia Saussure, 1895 (Roth 1982: 71). The first two genera can be distinguished from Panesthia by the anterolateral angles of terga usually with holes or grooves with associated setae, but species of Panesthia often lack holes, or if with holes in T6 and T7, the holes without setae. The last genus Miopanesthia, has a hind metatarsus that is usually close to or longer than the combined length of the remaining tarsal segments; however, the hind metatarsus is shorter than the remaining segments in Panesthia.

Distribution

Oriental Region, Australian Region, a few locations in the Palaearctic Region (China, Japan).

Key to species of Panesthia from China

Key to species of Panesthia from China — X. Wang , Z. Wang , Y. Che

1		Tegmina and wings absent    Panesthia larvata
–		Tegmina and wings present, or tegmina present and wings absent    2
2		Tegmina reduced (Fig. 17) and wings absent    Panesthia strelkovi
–		Tegmina and wings well developed or reduced    3
3		Tegmina with more than one colour in the form of spots    Panesthia transversa
–		Tegmina unicoloured without spots    4
4		Laterocaudal angles of T6 acute and posteriorly directed    Panesthia birmanica
–		Laterocaudal angles of T6 not acute    5
5		Anterior margin of pronotum broadly excavated and with a projection mesally in male, slightly concave and without projection in female    6
–		Anterior margin of pronotum slightly concave and without middle projection in both sexes    8
6		Body length < 30 mm, anteroventral margin of front femur with 0–1 spine    Panesthia sinuata
–		Body length > 30 mm, anteroventral margin of front femur with two spines or more (Panesthia angustipennis complex)    7
7		Hind margin of supra-anal fig entire dorsally or weakly undulate; median phallomere L2d elongate, tapering to a round apex (Roth 1979: Figs 19J, 20C–G)    Panesthia angustipennis spadica
–		Hind margin of supra-anal fig undulate dorsally; median phallomere L2d short with variable apex (Fig. 92; Roth 1979: Figs 21H, 22E, 23A–X)    Panesthia angustipennis cognata
8		Hind margin of supra-anal fig slightly crenate in ventral view (Fig. 89) and entire in dorsal view    Panesthia guizhouensis sp. n.
–		Hind margin of supra-anal fig crenulate in ventral and dorsal view    9
9		Vertex with a foveola in dorsal view (Fig. 27), and teeth on supra-anal fig with smooth border (Fig. 32)    Panesthia antennata
–		Vertex without foveola (Fig. 39), and teeth on supra-anal fig with uneven border (Fig. 44)    Panesthia stellata concava ssp. n.

Taxon Treatment

• Wang, X; Wang, Z; Che, Y; 2014: A taxonomic study of the genus Panesthia (Blattodea, Blaberidae, Panesthiinae) from China with descriptions of one new species, one new subspecies and the male of Panesthia antennata ZooKeys, (466): 53-75. doi

Images

Figures 17–26. 17–18 Panesthia strelkovi Bey-Bienko, 1969, male: 17 dorsal view 18 ventral view 19–20 Panesthia birmanica Brunner von Wattenwyl, 1893, male: 19 dorsal view 20 ventral view 21–22 Panesthia sinuata Saussure, 1895, male: 21 dorsal view 22 ventral view 23–24 Panesthia angustipennis cognata Bey-Bienko, 1969, female: 23 dorsal view 24 ventral view 25–26 Panesthia angustipennis cognata Bey-Bienko, 1969, nymph: 25 dorsal view 26 ventral view. Scale bars = 1.0 cm.  Figures 27–36. Panesthia antennata Brunner von Wattenwyl, 1893 27 vertex and pronotum 28 tegmen 29 hind wing 30 abdominal tergum 7, dorsal view 31 abdominal sternite 7, ventral view 32 supra-anal fig and paraprocts, ventral view 33 subgenital fig, dorsal view 34 left phallomere (L1) 35 median phallomere (L2vm and L2d) 36 right phallomere (R2). Scale bars = 1.0 mm (Figs 27, 30–33), 2.0 mm (Figs 28–29), 0.5 mm (Figs 34–36).  Figures 39–48. Panesthia stellata concava ssp. n. 39 vertex and pronotum 40 tegmen 41 hind wing 42 abdominal tergum 7, dorsal view 43 abdominal sternite 7, ventral view 44 supra-anal fig and paraprocts, ventral view 35 subgenital fig, dorsal view 46 left phallomere (L1) 47 median phallomere (L2vm and L2d) 48 right phallomere (R2). Scale bars = 1.0 mm (Figs 39, 42–45), 2.0 mm (Figs 40–41), 0.5 mm (Figs 46–48).  Figures 84–93. Panesthia angustipennis cognata Bey-Bienko, 1969 84 vertex and pronotum 85 tegmen 86 hind wing 87 abdominal tergum 7, dorsal view 88 abdominal sternite 7, ventral view 89 supra-anal fig and paraprocts, ventral view 90 subgenital fig, dorsal view 91 left phallomere (L1) 92 median phallomere (L2vm and L2d) 93 right phallomere (R2). Scale bars = 2.0 mm (Figs 84–90), 0.5 mm (Figs 91–93).